US3935442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoflash lamp array having electrically connected reflector
Assignee: General Electric Co
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Filing: 1974-09-26
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Granted: 1976-01-27
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Expires: 1994-09-26
Abstract
Abstract A photoflash lamp array comprising a plurality of flash lamps having lead-in wires connected to a circuit board carrying switching circuitry for sequentially firing the flash lamps. An electrically conductive reflector unit is positioned between the lamps and the circuit board. A conductive clip is clipped to the reflector unit and touches against an electrical ground point on the circuit board, whereby the reflector unit functions as an electrical shield for the circuitry.
Inventors
- 👤 James M. Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:12
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0007; G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/04; G03B15/0442
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
149 words
A multiple flash lamp array comprising a plurality of electrically fired flash lamps each having a pair of lead-in conductors, a circuit board containing thereon circuitry for sequentially firing said flash lamps, means electrically connecting said lead-in conductors of the flash lamps to said circuitry, and an electrically conductive reflector unit positioned between said lamps and said circuit board and shaped to reflect light from said lamps when flashed, said circuitry including a conductive area on said circuit board, said reflector unit including a web, a U-shaped conductive clip positioned between and in electrical contact with said conductive reflector unit and said conductive area on the circuit board and arranged so that the legs thereof are clipped against said web, said web and said conductive area being relatively aligned one behind the other and the base of said U-shaped clip extending against said conductive area on the circuit board.
Claim 2
Dependent Claim
149 words
A multiple flash lamp array comprising a plurality of electrically fired flash lamps each having a pair of lead-in conductors, a circuit board containing thereon circuitry for sequentially firing said flash lamps, means electrically connecting said lead-in conductors of the flash lamps to said circuitry, and an electrically conductive reflector unit positioned between said lamps and said circuit board and shaped to reflect light from said lamps when flashed, said circuitry including a conductive area on said circuit board, said reflector unit including a web, a U-shaped conductive clip positioned between and in electrical contact with said conductive reflector unit and said conductive area on the circuit board and arranged so that the legs thereof are clipped against said web, said web and said conductive area being relatively aligned one behind the other and the base of said U-shaped clip extending against said conductive area on the circuit board.
Claim 3
Dependent Claim
20 words
An array as claimed in claim 1, in which the legs of said clip are curved convexly toward each other.
Claim 4
Dependent Claim
32 words
An array as claimed in claim 1, in which the base of said U-shaped clip includes at least one loop extending toward and resiliently against said conductive area on the circuit board.
Claim 5
Dependent Claim
37 words
An array as claimed in claim 1, in which said web is a double-wall web having two spaced apart mutually parallel walls, said legs of the clip being against the outer surfaces of said two walls, respectively.
Claim 6
Dependent Claim
56 words
An array as claimed in claim 1, in which said web includes sides and is flanked by openings extending through said reflector unit from front to back thereof, said reflector unit being made of plastic material coated with an electrically conductive material at least over the front surface thereof and over the sides of said web.
Claim 7
Dependent Claim
54 words
An array as claimed in claim 1, in which said array is provided with a group of connector terminals positioned and arranged so that one of said connector terminals is more readily touchable than the rest, and means electrically connecting said more readily touchable connector terminal to said conductive area on the circuit board.
Claim 8
Dependent Claim
29 words
An array as claimed in claim 1, in which said conductive area on the circuit board is electrically connected to a lead-in wire of each of said flash lamps.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-26 | 1979-07-28 | 1980-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-26 | 1983-07-28 | 1984-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-26 | 1987-07-28 | 1988-01-27 | $7700.00 | Window Closed / Lapsed |