`
`UNITED STATES PATENT AND TRADEMARK OFFICE
`____________________________
`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`
`____________________________
`
`PARHELION, INC.
`Petitioner
`
`v.
`
`STREAMLIGHT, INC.
`Patent Owner
`
`________________________________
`
`
`
`PGR Case No.: PGR2020-00062
`U.S. Patent No. 10,378,702
`________________________________
`
`
`PETITION FOR POST-GRANT REVIEW
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`Mail Stop PATENT BOARD
`Patent Trial and Appeal Board
`U.S. Patent and Trademark Office
`P.O. Box 1450
`Alexandria, VA 22313-1450
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`Page 1
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`TABLE OF CONTENTS
`
`C. 
`
`I.  MANDATORY NOTICES (37 C.F.R. § 42.8) ............................................... 7 
`A. 
`Real Parties-in-Interest .......................................................................... 7 
`B. 
`Related Matters ...................................................................................... 7 
`C. 
`Counsel and Service Information .......................................................... 7 
`D. 
`Power of Attorney ................................................................................. 8 
`PAYMENT OF FEES (37 C.F.R. § 42.15(b)) ................................................ 8 
`II. 
`III.  SUMMARY OF REASONS WHY THE CHALLENGED CLAIMS ARE
`UNPATENTABLE .......................................................................................... 8 
`IV.  BACKGROUND AND SUMMARY OF THE ’702 PATENT ...................... 9 
`V. 
`THE PROSECUTION HISTORY OF THE ‘702 PATENT ......................... 12 
`VI.  REQUIREMENTS FOR POST GRANT REVIEW (37 C.F.R. § 42.204) ... 16 
`A.  Grounds for Standing (37 C.F.R. § 42.204 (a)) .................................. 16 
`Identification of Challenged Claims and Specific Statutory Grounds
`B. 
`(37 C.F.R. § 42.204 (b) (1)-(2)) .......................................................... 16 
`Claim Construction (37 C.F.R. § 42.204 (b) (3)) ................................ 25 
`1. 
`“cylindrical lens” ....................................................................... 26 
`2. 
`“plane of laser light” ................................................................. 27 
`3. 
`“or” recitations found in Claims 8, 18, 20, 21, 24, and 26 ....... 28 
`VII.  EFFECTIVE FILING DATE OF THE CHALLENGED CLAIMS ............. 29 
`VIII.  HOW THE CLAIMS ARE UNPATENTABLE UNDER
`37 C.F.R. § 42.204 (b)(4)-(5) ........................................................................ 30 
`A. 
`Level of Ordinary Skill in the Art ....................................................... 30 
`B.  Ground 1: Anticipation of Claims 1, 2, 5, 6, 8, 10, 11, 12, 15, 16, 18,
`22, and 27 by Krietzman ..................................................................... 30 
`1. 
`The Prior Art Krietzman Patent ................................................ 30 
`2. 
`Application of Krietzman to the Challenged Claims ................ 32 
`C.  Ground 2: Obviousness of Claims 1, 2, 5, 6, 10, 11, 12, 15, 16, 18,
`22, 27, and 28 Over Krietzman in View of Goodrich and Gustafson . 42 
`1. 
`Goodrich’s Cylindrical Lens ..................................................... 42 
`2. 
`Gustafson’s Multi-Position Switch ........................................... 44 
`D.  Ground 3: Lack of Enablement of Claims 1, 10, 11, 22, 23, 26, 27,
`and 31 Pursuant to 35 U.S.C. § 112 (a) ............................................... 47 
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`Page 2
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`1. 
`
`2. 
`
`The Full Scope of Claims 1, 10, 11, 22, 23, 26, 27, and 31
`Encompasses Devices that Use a Cylindrical Lens to Provide a
`Plane of Laser Light that Illuminates Objects in a Smoke-Filled
`Room ......................................................................................... 47 
`Requirements for Use of Planes of Laser Light to Illuminate
`Objects in Smoke-Filled Rooms ............................................... 48 
`The Full Scope of Claims 1, 10, 11, 22, 23, 26, 27, and 31 is
`Not Enabled ............................................................................... 53 
`The Full Scope of Claims 8, 18, 20, 21, 24, and 26
`Encompasses Portable Lighting Devices that Include a Laser
`Module Attached to a Flexible Stalk ........................................ 56 
`Heat Dissipation Requirements for Laser Diodes .................... 56 
`5. 
`Claims 8, 18, 20, 21, 24, and 26 Lack Enablement .................. 57 
`6. 
`IX.  THE GROUNDS ARE NOT REDUNDANT ............................................... 62 
`CONCLUSION .............................................................................................. 63 
`X. 
`
`
`3. 
`
`4. 
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`Page 3
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`TABLE OF AUTHORITIES
`
`Cases
`Amgen, Inc. v. Chugai Pharm. Co.,
` 927 F.2d 1200 (Fed. Cir. 1991) ........................................................................... 43
`Brown v. 3M,
` 265 F.3d 1349, 60 USPQ2d 1375, (Fed. Cir. 2001) ............................................ 25
`Duncan Parking Techs., Inc. v. IPS Group, Inc.,
` 914 F.3d 1347 (Fed. Cir. 2019) ........................................................................... 44
`Eli Lilly & Co. v. Zenith Goldline Pharm., Inc.,
` 471 F.3d 1369 (Fed. Cir. 2006) ........................................................................... 30
`In re Wands,
` 858 F.2d 731 (Fed. Cir. 1988) ...................................................................... 43, 49
`Phillips v. AWH Corp.,
` 415 F.3d 1303 (Fed. Cir. 2005) ........................................................................... 22
`Wm. Wrigley Jr. Co. v. Cadbury Adams USA LLC,
` 683 F.3d 1356 (Fed. Cir. 2012) ........................................................................... 30
`Wyeth & Cordis Corp. v. Abbot Labs.,
` 720 F.3d 1380 (Fed. Cir. 2013) ........................................................................... 43
`Statutes 
`35 U.S.C. § 102(a)(1) ........................................................................................ 39, 40
`35 U.S.C. § 112(a) ................................................................................ 15, 21, 43, 51
`35 U.S.C. § 282(b) ................................................................................................... 22
`35 U.S.C. § 321(c) ................................................................................................... 14
`35 U.S.C. §§ 321-329 ................................................................................................ 6
`Rules 
`37 C.F.R. § 42 ............................................................................................................ 6
`37 C.F.R. § 42.10(b) .................................................................................................. 7
`37 C.F.R. § 42.15(b) .................................................................................................. 7
`37 C.F.R. § 42.204 ................................................................................................... 14
`37 C.F.R. § 42.204 (a) .............................................................................................. 14
`37 C.F.R. § 42.204 (b) ............................................................................................. 26
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`Page 4
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`37 C.F.R. § 42.204 (b) (1) ........................................................................................ 15
`37 C.F.R. § 42.204 (b) (1) ........................................................................................ 15
`37 C.F.R. § 42.204 (b) (2) ........................................................................................ 15
`37 C.F.R. § 42.204 (b) (2) ........................................................................................ 15
`37 C.F.R. § 42.204 (b)(3) ......................................................................................... 22
`37 C.F.R. § 42.204 (b)(3) ......................................................................................... 22
`37 C.F.R. § 42.205 ................................................................................................... 60
`37 C.F.R. § 42.205 ................................................................................................... 60
`37 C.F.R. § 42.24 ..................................................................................................... 61
`37 C.F.R. § 42.24 ..................................................................................................... 61
`37 C.F.R. § 42.6 ....................................................................................................... 60
`37 C.F.R. § 42.6 ....................................................................................................... 60
`37 C.F.R. § 42.8 ......................................................................................................... 6
`37 C.F.R. § 42.8 ......................................................................................................... 6
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`Page 5
`Page 5
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`EXHIBIT LIST
`
`Exhibit No.
`
`Exhibit Description
`
`Bates Range
`
`1001
`
`1002
`
`1003
`
`1004
`
`1005
`
`1006
`
`1007
`
`1008
`
`1009
`
`1010
`
`1011
`
`U.S. Patent No. 10,378,702 (“the ’702 patent”) 0000001-0000030
`
`File History of the ‘702 patent (“the ‘702 file
`
`0000031-0000240
`
`history”)
`
`Declaration of Kenneth J. Puckett
`
`0000241-0000292
`
`U.S. Patent No. 6,062,702 (“Krietzman”)
`
`0000293-0000302
`
`U.S. Patent No. 8,672,513 (“Redpath”)
`
`0000303-0000309
`
`U.S. Patent No. 9,488,331 (“the ’331 patent)
`
`0000310-0000328
`
`U.S. Patent No. 6,694,629 (“Goodrich”)
`
`0000329-0000335
`
`U.S. Patent No. 7,883,243 (“the ’243 patent”)
`
`0000336-0000355
`
`NOT USED
`
`None
`
`U.S. Provisional Application No. 62/325,917
`
`0000356-0000395
`
`U.S. Patent No. 7,281,815 (“Gustafson”).
`
`0000396-0000411
`
`
`
`
`
`
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`Page 6
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`Parhelion, Inc. (“Petitioner”) petitions for post-grant review (“PGR”)
`
`pursuant to 35 U.S.C. §§ 321-329 and 37 C.F.R., Part 42 of claims 1, 2, 5, 6, 8, 10,
`
`11, 12, 15, 16, 18, 20, 21, 22, 23, 24, 26, 27, 28, and 31 (“the challenged claims”)
`
`of U.S Patent No. 10,378,702 (“the ’702 patent), which generally describes a
`
`portable light having a light body, a white light source, and a laser-light source that
`
`provides a plane of laser light. The ’702 patent issued on August 13, 2019 from
`
`U.S. Patent Application No. 15/492,344, filed on April 20, 2017. It claims priority
`
`to provisional patent application 62/325,917, filed on April 21, 2016. The ’702
`
`patent is assigned to Streamlight, Inc. of Eagleville, Pennsylvania (“Patent
`
`Owner”).
`
`I. MANDATORY NOTICES (37 C.F.R. § 42.8)
`A. Real Party-in-Interest
`Petitioner Parhelion Inc., is the real party-in-interest.
`
`
`
`B. Related Matters
`Petitioner is not aware of any other pending administrative matter or
`
`
`
`litigation that would affect, or be affected by, a decision in this proceeding.
`
`C. Counsel and Service Information
`Lead Counsel:
`Clinton H. Brannon (Reg. No. 57,887)
`
`Back-up Counsel: Douglas Tsao (Reg. No. 72,349)
`
`
`
`
`
`
`
`Richard Matthews (Reg. No. 53,284)
`
`Electronic Service: cbrannon@williamsmullen.com;
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`Page 7
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` dtsao@williamsmullen.com; and
`
` rmatthews@williamsmullen.com
`
`Post and Delivery: Williams Mullen, P.C., 8300 Greensboro Drive,
`
` Suite 1100, Tysons, VA 22102.
`
`Telephone: 703-760-5226
`
`
`
`
`
`Facsimile: 703-748-0244
`
`D.
`Power of Attorney
`A power of attorney is filed herewith according to 37 C.F.R. 42.10(b).
`
`PAYMENT OF FEES (37 C.F.R. § 42.15(b))
`Petitioner challenges 20 claims of the ’702 patent. The required post grant
`
`
`
`II.
`
`
`review request fee of $16,000 is being paid contemporaneously with the filing of
`
`this petition. The USPTO is authorized to charge any fee deficiency, or credit any
`
`overpayment, to Deposit Account No. 50-0766 (Williams Mullen, P.C.).
`
`
`
`
`
`III. SUMMARY OF REASONS WHY THE CHALLENGED CLAIMS
`ARE UNPATENTABLE
`The challenged claims of the ’702 patent are directed to a flashlight having
`
`multiple illumination sources wherein one illumination source is a laser light
`
`source capable of generating a plane of laser light. The prior art disclosed
`
`flashlight bodies containing multiple illumination sources, including, for example,
`
`a white light source and laser light source. See Ex. 1004. In addition, the
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`Krietzman prior art explicitly discloses a multi-illumination light source wherein
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`the laser light source is used with a straight-line generating lens. See Ex. 1004 at
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`Page 8
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`6:66-67. As explained below and in the Declaration of Kenneth J. Puckett (Ex.
`
`1003), a lens that generates a line of laser light when projected on a wall
`
`necessarily generates a “plane of laser light” as recited in the claims of the ’702
`
`patent. Ex. 1001 at col. 2:29-32 and col. 9:66-10:3; see also Ex. 1005 at 2:65-67;
`
`Fig. 4, 140; Ex. 1003 ¶ 25-26.
`
`IV. BACKGROUND AND SUMMARY OF THE ’702 PATENT
`The ’702 patent was filed on April 20, 2017 as U.S. Patent Application No.
`
`15/492,344. It claims priority to provisional patent application 62/325,917, filed
`
`on April 21, 2016. The ’702 patent is directed generally to a “light body having an
`
`illumination light source and a laser light source supported thereby, each source
`
`selectively energizable for producing light, and a switch for selectively energizing
`
`the white light and/or laser light source.” See Ex. 1001 at col. 2:26-29. In
`
`particular, “the laser light source may be configured to emit a plane of laser light,
`
`so as to create a line of laser light on objects illuminated by the laser plane.” Id. at
`
`2:30-32. Figure 1C of the ’702 patent illustrates an exemplary embodiment, while
`
`Figure 2 provides an exploded view:
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`Page 9
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`In addition, certain embodiments of the ’702 patent include a so-called
`
`“registration feature,” that allows the laser light source to be “mounted in a
`
`predetermined orientation” relative to the body of the light. See Ex. 1001 at col.
`
`9:14-54. In other words, this registration feature ensures that the laser light source
`
`is aligned properly when the device is assembled. Other embodiments provide for
`
`mounting the laser light source in such a way that it is rotatable (Ex. 1001 at col.
`
`10:12-14), or on a flexible stalk (Ex. 1001 at col. 12:54-59). The flexible stalk
`
`embodiment is shown, for example, in Fig. 9A:
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`Page 10
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`The ’702 patent issued on August 13, 2019 with 31 claims. Claims 1, 10,
`
`11, 22, 23, 26, 27, and 31 are independent claims. By way of example,
`
`independent Claim 1 recites a portable light including a light body for receiving a
`
`source of electrical power, a white light source supported by the light body and
`
`selectively energizable for producing white light, a laser light source supported by
`
`the light body and selectively energizable for producing laser light, and a switch
`
`supported by the light body for selectively energizing the white light source and
`
`the laser light source from the source of electrical power. The laser light source
`
`includes a cylindrical lens configured for receiving light from a laser emission
`
`element and for transmitting the received light as a plane of laser light. The
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`Page 11
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`cylindrical lens receives the laser light at a first part of a cylindrical surface thereof
`
`and emits the plane of laser light from a second part of that cylindrical surface.
`
`V. THE PROSECUTION HISTORY OF THE ‘702 PATENT
`The application that led to the ‘702 patent was filed on April 20, 2017 and
`
`claims priority to U.S. Provisional Patent Application No. 62/325,917, filed on
`
`April 21, 2016.
`
`The application was initially rejected under 35 USC §103 as unpatentable
`
`over Spartano (US 2011/0163698) in view of Popps (US 6,864,799). Ex. 1002 at
`
`pgs 98-110. Application claims 5, 15 and 25 were objected to, but the Examiner
`
`indicated they would be allowable if rewritten in independent format. Id. at pgs.
`
`110-112. Specifically, the Examiner stated that the prior art of record does not
`
`teach or suggest the following:
`
`Claim 5: "a portable light comprising ... a laser light source supported
`by said light body and selectively energizable for producing laser
`light, wherein said laser light source includes a cylindrical lens
`configured for receiving light from a laser emission element and for
`transmitting the received light as a plane of laser light, whereby the
`laser light source is configured to emit a plane of laser light ... wherein
`said white light source includes a shaped optically clear plastic
`element having a polished curved external side surface and a generally
`wider flat forward surface oriented such that the white light exits the
`white light source through the flat forward surface, and wherein the
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`Page 12
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`laser light source is supported by the flat forward surface" along with
`the other limitations of the claim.
`
`Claim 15: “a portable light comprising ... a laser light source
`supported by said light body and selectively energizable for producing
`laser light, wherein said laser light source includes a cylindrical lens
`configured for receiving light from a laser emission element and for
`transmitting the received light as a plane of laser light, whereby the
`laser light source is configured to emit a plane of laser light ... wherein
`said illumination light source includes a shaped optically clear plastic
`element having a polished curved external side surface and a generally
`wider flat forward surface oriented such that the white light exits the
`white light source through the flat forward surface, and wherein the
`laser light source is supported by the flat forward surface" along with
`the other limitations of the claim.
`
`Claim 25: “a portable light comprising ... a laser light source
`supported by said light body relatively nearer to the base end thereof
`than is said illumination light source and being selectively energizable
`for producing laser light, wherein said laser light source includes a
`cylindrical lens configured for receiving laser light from a laser
`emission element and for transmitting the received laser light as a
`plane of laser light in substantially the predetermined direction
`relative to said light body ... wherein said laser light source further
`includes a support for said cylindrical lens, wherein: the support for
`said cylindrical lens is rotatable relative to said light body, whereby a
`longitudinal axis of said cylindrical lens is rotatable relative to said
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`Page 13
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`light body; or the laser emission element and the support for said
`cylindrical lens are supported on a flexible stalk that is attached to
`said light body, whereby a longitudinal axis of said cylindrical lens is
`repositionable relative to said light body; or the laser emission
`element and the support for said cylindrical lens are supported on a
`flexible stalk that is attached to said light body and said support for
`said cylindrical lens is rotatable relative to said flexible stalk, whereby
`a longitudinal axis of said cylindrical lens is rotatable and
`repositionable relative to said light body” along with the other
`limitations of the claim.
`
`
`
`Claims 27-30 were found allowable as the Examiner stated that the prior art
`
`does not teach or reasonably suggest "a portable light comprising: ... a shaped
`
`optically clear element having a polished curved external side surface and a flat
`
`forward surface through which the illumination light exits said illumination light
`
`source in a predetermined direction relative to said light body; a laser light source
`
`supported by said shaped optically clear element and selectively energizable for
`
`producing laser light, wherein said laser light source includes a cylindrical lens
`
`configured for receiving light from a laser emission element and for transmitting
`
`the received light as a plane of laser light" along with the other limitations of the
`
`claims. Id. at pg. 112.
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`In response, the applicant amended Claims 1, 11, and 23 to recite that the
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`cylindrical lens receives laser light at a first part of a cylindrical surface thereof
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`Page 14
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`and emits the plane of laser light from a second part of that cylindrical surface. Id.
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`at pgs. 84-92. Claims 5, 15, 25 were rewritten in independent format, and new
`
`Independent Claim 31 was added. Id.
`
`The applicant responded to the Examiner’s rejections using the following
`
`arguments. First, it argued that the prior art Popps reference was distinguishable
`
`because Popps did not disclose a portable device. Id. at pgs. 75-77. Second, the
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`applicant argued that both Popps and Spartano were distinguishable because
`
`neither has a cylindrical lens. Id. at pgs. 75-76. The Applicant submitted that its
`
`claims recite a portable light using a cylindrical lens to provide a plane of laser
`
`light in addition to a light source producing an illumination beam, a feature that
`
`Popps and Spartano lacked. Id. at pg. 77. The applicant also argued that Spartano
`
`utilized LEDs, not laser diodes. Id. at pgs. 74-75. The Examiner issued a Notice
`
`of Allowance on April 17, 2019 following the applicant’s amendments and
`
`arguments. Id. at pg. 10.
`
`As discussed below, the features relied upon by the applicant in
`
`distinguishing Popps and Spartano, such as a cylindrical lens and a laser diode,
`
`were well-known in the prior art. Accordingly, prior art disclosing those features
`
`presents substantial new questions of patentability not addressed during the
`
`original prosecution of the ’702 patent.
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`Page 15
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`VI. REQUIREMENTS FOR POST GRANT REVIEW (37 C.F.R. § 42.204)
`A. Grounds for Standing (37 C.F.R. § 42.204 (a))
`Petitioner certifies that the ’702 patent is available for PGR. The ’702 patent
`
`issued on August 13, 2019 from an application filed April 20, 2017 and claims
`
`priority to provisional application no. 62/325,917, filed on April 21, 2016, with no
`
`other priority claims. Accordingly, each claim of the ’702 patent has an effective
`
`filing date on or after March 16, 2013 such that PGR is available. See Leahy-
`
`Smith America Invents Act, Pub. L. No. 112-29, sec. 3(n)(1)(A), 6(f)(2), 125 Stat.
`
`284, 293, 311 (2011). In addition, this Petition is filed less than nine months after
`
`the issuance of the ’702 patent. See 35 U.S.C. § 321(c).
`
`Petitioner certifies that it is not barred or estopped from requesting a post-
`
`grant review challenging the patent claims on the grounds identified herein.
`
`B.
`
`Identification of Challenged Claims and Specific Statutory
`Grounds (37 C.F.R. § 42.204 (b) (1)-(2))
`Petitioner challenges claims 1, 2, 5, 6, 8, 10, 11, 12, 15, 16, 18, 20, 21, 22,
`
`23, 24, 25, 26, 27, 28, and 31 (“the Challenged Claims”) of the ’702 patent under
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`35 U.S.C. §§ 103 and 112(a). Independent Claim 1 recites:
`
`A portable light comprising:
`
`a light body for receiving a source of electrical power;
`
`a white light source supported by said light body and selectively
`energizable for producing white light;
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`Page 16
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` a
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` laser light source supported by said light body and selectively
`energizable for producing laser light, wherein said laser light source
`includes a cylindrical lens configured for receiving light from a laser
`emission element and for transmitting the received light as a plane of
`laser light, the cylindrical lens receiving laser light at a first part of a
`cylindrical surface thereof and emitting the plane of laser light from a
`second part of that cylindrical surface, whereby the laser light source
`is configured to emit a plane of laser light; and
`
`a switch supported by said light body for selectively energizing said
`white light source from the source of electrical power, and for
`selectively energizing said laser light source from the source of
`electrical power.
`
`Claims 2, 5, 6, and 8 depend from Claim 1. Claim 2 recites that the laser
`
`emission element of Claim 1 comprises a laser diode. Id. at 23:7-8. Claim 5
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`recites functionality related to the switch, claim 6 recites that the light sources emit
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`light in substantially the same direction, and claim 8 recites that the laser light
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`source is supported by either the shaped optical element of the flashlight or a
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`flexible stalk.
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`Claim 10 recites:
`
`A portable light comprising:
`
`a light body for receiving a source of electrical power;
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`Page 17
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`a white light source supported by said light body and selectively
`energizable for producing white light;
`
` a
`
` laser light source supported by said light body and selectively
`energizable for producing laser light, wherein said laser light source
`includes a cylindrical lens configured for receiving light from a laser
`emission element and for transmitting the received light as a plane of
`laser light, whereby the laser light source is configured to emit a plane
`of laser light; and
`
` a
`
` switch supported by said light body for selectively energizing said
`white light source from the source of electrical power, and for
`selectively energizing said laser light source from the source of
`electrical power; and
`
`wherein said white light source includes a shaped optically clear
`plastic element having a polished curved external side surface and a
`generally wider flat forward surface oriented such that the white light
`exits the white light source through the flat forward surface, and
`wherein the laser light source is supported by the flat forward surface.
`
`Claim 11 recites:
`
`A portable light comprising:
`
`a light body for receiving a source of electrical power;
`
`an illumination light source supported by said light body and
`selectively energizable for producing illumination light;
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`Page 18
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`a laser light source supported by said light body and selectively
`energizable for producing laser light, wherein said laser light source
`includes a cylindrical lens configured for receiving light from a laser
`emission element and for transmitting the received light as a plane of
`laser light, the cylindrical lens receiving laser light at a first part of a
`cylindrical surface thereof and emitting the plane of laser light from a
`second part of that cylindrical surface, whereby the laser light source
`is configured to emit a plane of laser light; and
`
` a
`
` switch supported by said light body for selectively energizing said
`illumination light source from the source of electrical power and for
`selectively energizing said laser light source from the source of
`electrical power.
`
`Claims 12, 15, 16, 18, 20, and 21 depend on Claim 11. Claim 12 recites that
`
`the laser emission element of Claim 11 comprises a laser diode. Id. at col. 24:16-
`
`17. Claim 15 recites functionality related to the switch. Claim 16 recites that the
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`illumination light source and laser light source emit light in substantially the same
`
`direction. Claim 20 recites that the laser light source is supported by a reflective
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`element and is rotatable, is supported by the light body and is rotatable, or is
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`supported by a flexible stalk. Claim 21 provides additional details regarding the
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`rotatable laser light source.
`
`Claim 22 recites:
`
` A
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` portable light comprising:
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` a
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` light body for receiving a source of electrical power;
`an illumination light source supported by said light body and
`selectively energizable for producing illumination light;
`
` a
`
` laser light source supported by said light body and selectively
`energizable for producing laser light, wherein said laser light source
`includes a cylindrical lens configured for receiving light from a laser
`emission element and for transmitting the received light as a plane of
`laser light, whereby the laser light source is configured to emit a plane
`of laser light; and
`
` a
`
` switch supported by said light body for selectively energizing said
`illumination light source from the source of electrical power and for
`selectively energizing said laser light source from the source of
`electrical power; and
`
`wherein said illumination light source includes a shaped optically
`clear element having a polished curved external side surface and a
`generally wider flat forward surface whereat the illumination light
`exits said illumination light source through the flat forward surface,
`and wherein said laser light source is supported by said shaped
`optically clear element.
`
`Claim 23 recites:
`
` a
`
` light body for receiving a source of electrical power and having a
`base end;
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`an illumination light source supported by said light body relatively
`nearer to an end thereof that is remote to the base end thereof, said
`illumination light source being configured to emit illumination light in
`a predetermined direction relative to said light body and being
`selectively energizable for producing illumination light;
`
` a
`
` laser light source supported by said light body relatively nearer to
`the base end thereof than is said illumination light source and being
`selectively energizable for producing laser light, wherein said laser
`light source includes a cylindrical lens configured for receiving laser
`light from a laser emission element and for transmitting the received
`laser light as a plane of laser light in substantially the predetermined
`direction relative to said light body, the cylindrical lens receiving laser
`light at a first part of a cylindrical surface thereof and emitting the
`plane of laser light from a second part of that cylindrical surface,
`whereby the laser light source is configured to emit a plane of laser
`light in the same general direction as the illumination light is emitted;
`and
`
` a
`
` switch supported by said light body for selectively energizing said
`illumination light source from the source of electrical power and for
`selectively energizing said laser light source from the source of
`electrical power.
`
`Claim 25 depends from claim 23 and recites that the switch is operable so
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`that only one of the light sources is energized at a given time.
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`Claim 26 recites:
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`A portable light comprising:
`
` a
`
` light body for receiving a source of electrical power and having a
`base end;
`
`an illumination light source supported by said light body relatively
`nearer to an end thereof that is remote to the base end thereof, said
`illumination light source being configured to emit illumination light in
`a predetermined direction relative to said light body and being
`selectively energizable for producing illumination light;
`
` a
`
` laser light source supported by said light body relatively nearer to
`the base end thereof than is said illumination light source and being
`selectively energizable for producing laser light, wherein said laser
`light source includes a cylindrical lens configured for receiving laser
`light from a laser emission element and for transmitting the received
`laser light as a plane of laser light in substantially the predetermined
`direction relative to said light body, whereby the laser light source is
`configured to emit a plane of laser light in the same general direction
`as the illumination light is emitted; and
`
` a
`
` switch supported by said light body for selectively energizing said
`illumination light source from the source of electrical power and for
`selectively energizing said laser light source from the source of
`electrical power; and
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`wherein said laser light source further includes a support for said
`cylindrical lens, wherein:
`
`the support for said cylindrical lens is rotatable relative to said light
`body, whereby a longitudinal axis of said cylindrical lens is rotatable
`relative to said light body; or
`
`the laser emission element and the support for said cylindrical lens are
`supported on a flexible stalk that is attached to said light body,
`whereby a longitudinal axis of said cylindrical lens is repositionable
`relative to said light body; or
`
`the laser emission element and the support for said cylindrical lens are
`supported on a flexible stalk that is attached to said light body and
`said support for said cylindrical lens is rotatable relative to said
`flexible stalk, whereby a longitudinal axis of said cylindrical lens is
`rotatable and repositionable relative to said light body.
`
`Claim 27 recites:
`
`a light body for receiving a source of electrical power;
`
`an illumination light source supported by said light body and
`selectively energizable for producing illumination light, wherein said
`illumination light source includes a shaped optically clear element
`having a polished curved external side surface and a flat forward
`surface through which the illumination light exits said illumination
`light source in a predetermined direction relative to said light body;
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