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US3776686A Expired / Lapsed US ⏱️ 0.0 years remaining

Photographic flashlamp unit

Assignee: GTE Sylvania Inc
•
Filing: 1970-09-08
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Granted: 1973-12-04
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Expires: 1990-09-08
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Abstract

Abstract A flashcube having lamps of the percussive primer type and having self-contained means for firing them.

Inventors

  • 👤 W Colville
  • 👤 L Anderson
  • 👤 W Fink

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 03:47
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/04; G03B15/0478; G03B15/0484

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 185 words
A photographic flashlamp unit for use with a camera having a socket for receiving said unit, said unit comprising: a platform; a container having a pluralIty of transparent sides mounted on said platform, said container being secured to said platform along the peripheral edges thereof, thereby defining an enclosed and an exposed face of said platform; a plurality of reflectors disposed in said container; a plurality of flashlamps mounted on the enclosed face of said platform, each flashlamp being disposed between one of said reflectors and one of the transparent sides of said container, and each flashlamp comprising an hermetically sealed, lighttransmitting envelope having a source of actinic light disposed therein and a primer depending therefrom, said primer comprising a metal tube having an anvil and a charge of fulminating material disposed therein, said metal tube extending through said platform and beyond the exposed face thereof thereby defining an exposed segment of said tube; and mechanical means mounted on said platform for striking the exposed segment of said primer tube to cause deflagration of said fulminating material and ignition of said source of actinic light.
Claim 2
Dependent Claim 185 words
A photographic flashlamp unit for use with a camera having a socket for receiving said unit, said unit comprising: a platform; a container having a pluralIty of transparent sides mounted on said platform, said container being secured to said platform along the peripheral edges thereof, thereby defining an enclosed and an exposed face of said platform; a plurality of reflectors disposed in said container; a plurality of flashlamps mounted on the enclosed face of said platform, each flashlamp being disposed between one of said reflectors and one of the transparent sides of said container, and each flashlamp comprising an hermetically sealed, lighttransmitting envelope having a source of actinic light disposed therein and a primer depending therefrom, said primer comprising a metal tube having an anvil and a charge of fulminating material disposed therein, said metal tube extending through said platform and beyond the exposed face thereof thereby defining an exposed segment of said tube; and mechanical means mounted on said platform for striking the exposed segment of said primer tube to cause deflagration of said fulminating material and ignition of said source of actinic light.
Claim 3
Dependent Claim 55 words
The combination of claim 1 in which said platform includes a center post depending from the exposed face therefrom and said primer tube striking means is a straight wire spring anchored at one end thereof in said center post with the other end thereof being disposed in operative relationship with respect to said primer tube.
Claim 4
Dependent Claim 56 words
The combination of claim 1 in which said primer tube striking means is a straight wire spring having a short segment at one end thereof bent at about a 90* angle and embedded in the exposed face of said platform with the other end thereof being disposed in operative relationship with respect to said primer tube.
Claim 5
Dependent Claim 74 words
The combination of claim 1 in which the exposed face of said platform is provided with a headed pin depending therefrom and said primer tube striking means is a straight spring wire coiled intermediate its ends about said pin, one end thereof being bent at about a 90* angle and embedded in the exposed face of said platform with the other end thereof being disposed in operative relationship with respect to said primer tube.
Claim 6
Dependent Claim 20 words
The combination of claim 1 in which each of said flashlamps has its own primer tube striking means associated therewith.

References Cited (Backward Citations)

US952394A Cited
US970358A Cited
US1814299A Cited
US1853172A Cited
US2006171A Cited
US3517182A Cited
US3521983A Cited
US3537805A Cited
US3537367A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-12-03 1977-06-04 1977-12-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-12-03 1981-06-04 1981-12-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-12-03 1985-06-04 1985-12-04 $7700.00 Window Closed / Lapsed

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