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US3725692A Expired / Lapsed US ⏱️ 0.0 years remaining

Photographic flashlamp unit

Assignee: GTE Sylvania Inc
•
Filing: 1971-12-20
•
Granted: 1973-04-03
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Expires: 1991-12-20
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Abstract

Abstract A flash cube having a strip of adhesive-backed transparent plastic tape wrapped about its transparent cover side walls to provide increased containment capability.

Inventors

  • 👤 C Miller
  • 👤 D Broadt
  • 👤 D Armstrong

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 05:03
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/04; G03B15/0442; F; F21; F21K; F21K5/00; F21K5/02

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 81 words
A photographic flashlamp unit comprising, in combination, a base member, at least one flashlamp mounted on said base member, an integral protecting cover affixed to said base member and enclosing said flashlamp, said cover having a top wall and at least one light-transmitting side wall, and at least one sheet of light-transmitting plastic material covering the lighttransmitting side wall of said cover and adhesively secured thereto, said sheet of plastic material being selected to increase the containment capability of said cover.
Claim 2
Dependent Claim 81 words
A photographic flashlamp unit comprising, in combination, a base member, at least one flashlamp mounted on said base member, an integral protecting cover affixed to said base member and enclosing said flashlamp, said cover having a top wall and at least one light-transmitting side wall, and at least one sheet of light-transmitting plastic material covering the lighttransmitting side wall of said cover and adhesively secured thereto, said sheet of plastic material being selected to increase the containment capability of said cover.
Claim 3
Dependent Claim 29 words
A flashlamp unit according to claim 1 wherein the side wall of said cover is transparent, and said sheet of plastic material comprises a strip of adhesive-backed transparent tape.
Claim 4
Dependent Claim 29 words
A flashlamp unit according to claim 2 wherein said cover is formed of polystyrene, and said strip of transparent tape comprises a strip of polypropylene with an adhesive backing.
Claim 5
Dependent Claim 61 words
A flashlamp unit according to claim 2 wherein a plurality of flashlamps are mounted on said base member, said cover encloses said flashlamps and has a plurality of light-transmitting side walls, and said strip of adhesive-backed tape is wrapped about the side walls of said cover with the ends of said strip of tape overlapped to enhance the strength of containment.
Claim 6
Dependent Claim 145 words
A flashlamp unit according to claim 1 wherein a plurality of flashlamps are mounted on said base member, said cover encloses said flashlamps and has a plurality of light-transmitting side walls, said base member comprises a horizontal platform support having a plurality of lateral edges, said flashlamps are vertically mounted on the upper surface of said platform support about a central vertical axis thereof, each flashlamp being positioned symmetrically with respect to one of the lateral edges of said support, said unit further includes reflector surface means disposed behind each of said flashlamps for emitting light from that flashlamp along a line extending radially outwardly from the respective one of said lateral edges, and said protective cover is affixed to said platform support and encloses said flashlamps with each of the side walls of said cover being adjacent a corresponding one of said lateral edges.
Claim 7
Dependent Claim 49 words
A flashlamp unit according to claim 5 wherein said sheet of plastic material comprises a strip of adhesive-backed tape, said strip of tape being wrapped about all of the side walls of said cover with the ends of said strip of tape overlapped to enhance the strength of containment.
Claim 8
Dependent Claim 64 words
A flashlamp unit according to claim 6 wherein the side walls of said cover are transparent, said strip of adhesive-backed tape is transparent, and the ends of said strip of transparent tape are overlapped about a corner of said cover at the juncture of two of said transparent side walls, the extension of said overlap being approximately symmetrical about each side of said corner.
Claim 9
Dependent Claim 29 words
A flashlamp unit according to claim 7 wherein said cover is formed of polystyrene, and said strip of transparent tape comprises a strip of polypropylene with an adhesive backing.
Claim 10
Dependent Claim 55 words
A flashlamp unit according to claim 5 wherein said sheet of plastic material comprises a strip of adhesive-backed tape, and said strip of tape is wrapped a plurality of times about all of the side walls of said cover whereby a plurality of sheets of said ligHt-transmitting plastic material cover each of said side walls.
Claim 11
Dependent Claim 26 words
A flashlamp unit according to claim 1 wherein said sheet of plastic material is transparent and has a blue color for filtering the light transmitted therethrough.

References Cited (Backward Citations)

US2789205A Cited
US2857752A Cited
US3238749A Cited
US3386360A Cited
US3358475A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-04-02 1976-10-02 1977-04-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-04-02 1980-10-02 1981-04-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-04-02 1984-10-02 1985-04-03 $7700.00 Window Closed / Lapsed

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