US3980421A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flash lamp unit
Assignee: US Philips Corp
•
Filing: 1974-09-13
•
Granted: 1976-09-14
•
Expires: 1994-09-13
Abstract
Abstract A flash lamp unit having at least one row of flash lamps which are arranged on a common elongate support and which can be fired by a stroke against a lamp portion, which flash lamp unit comprises a number of striker springs which are locked in the pre-energized condition and which can be unlocked by ramps on a body which is movable step-wise in the longitudinal direction of the support, the force necessary for the movement being supplied by a transport spring present in the unit or by at least one of the striker springs. The step-wise movement of the body is preferably enabled by an escapement which cooperates with teeth occurring on the body. The ramps on the body cooperate with the springs to sequentially release the springs.
Inventors
- 👤 Andreas Maria Heeman
- 👤 Piet Jan Maria Steeghs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:56
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/04; G03B15/0478; G03B15/0489; F; F21; F21K; F21K5/00; F21K5/02; F21K5/023; G03B15/0484
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
173 words
A flash lamp unit having a plurality of percussion flash lamps which ignite responsive to impact disposed in at least one row, a common elongate support carrying said one row of lamps, a plurality of striker springs, each of said springs being disposed proximate to a different one of said plurality of lamps, means for holding each spring in a prestressed form and selectively releasing each spring individually, each spring impacting said proximate lamp when selectively released to ignite said proximate lamp, an elongate body cooperating with said support, said body being movable in the longitudinal direction with respect to said support, said body having a plurality of projections disposed in spaced relationship, each of said projections cooperating with said springs and sequentially releasing said springs from a prestressed form upon incremental movement of said body in the longitudinal direction, escapement means to selectively hold said body in a plurality of discreet longitudinal positions and biasing means for urging said body in said longitudinal direction comprising one or more of said striker springs.
Claim 2
Dependent Claim
173 words
A flash lamp unit having a plurality of percussion flash lamps which ignite responsive to impact disposed in at least one row, a common elongate support carrying said one row of lamps, a plurality of striker springs, each of said springs being disposed proximate to a different one of said plurality of lamps, means for holding each spring in a prestressed form and selectively releasing each spring individually, each spring impacting said proximate lamp when selectively released to ignite said proximate lamp, an elongate body cooperating with said support, said body being movable in the longitudinal direction with respect to said support, said body having a plurality of projections disposed in spaced relationship, each of said projections cooperating with said springs and sequentially releasing said springs from a prestressed form upon incremental movement of said body in the longitudinal direction, escapement means to selectively hold said body in a plurality of discreet longitudinal positions and biasing means for urging said body in said longitudinal direction comprising one or more of said striker springs.
Claim 3
Dependent Claim
98 words
A flash lamp unit as claimed in claim 1 wherein said projections on said movable body each comprise a surface extending generally transverse to the longitudinal direction of said body, said striker springs each bearing on one of said surfaces of said projections in at least one position of said movable body, said support comprising a pluarality of ramps, each ramp being disposed proximate to one of said striker springs, each striker spring having an extension, said extension of said springs being sequentially lifted over the cooperating projections on the movable body upon incremental movement of said body.
Claim 4
Dependent Claim
50 words
A flash lamp unit as claimed in claim 2 wherein the distance from one end of said extension to said surface on which said extension bears in at least one position of said movable body is different for each spring and is reduced upon incremental movement of said movable body.
References Cited (Backward Citations)
US3812339A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-14 | 1980-03-15 | 1980-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-14 | 1984-03-15 | 1984-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-14 | 1988-03-15 | 1988-09-14 | $7700.00 | Window Closed / Lapsed |