US3552287A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoflash lamp firing mechanism
Assignee: Eastman Kodak Co
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Filing: 1968-02-23
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Granted: 1971-01-05
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Expires: 1988-02-23
Abstract
Abstract A photographic camera having a photoflash lamp firing mechanism for percussive-type flashlamps. The lamp firing mechanism consists of a metal spring which is released from its energized position in response to operation of the camera shutter and strikes the percussive-type lamp to effect the firing thereof. The firing mechanism also has a setting member accessible from outside the camera casing for moving the metal spring to its energized position.
Inventors
- 👤 William C Fink
- 👤 John W Shaffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:04
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; F21K5/026; G03B15/0452; G03B15/0457; G03B15/0484
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
178 words
A photographic camera for exposing film receivable in the camera and usable with disposable photoflash lamps; the lamps including a hermetically sealed envelope containing combustible material; the camera being adapted to be hand held and comprising: a casing; means for removably receiving a photoflash lamp on the casing; a shutter mechanism in the casing operative to expose film receivable in the camera; a body release on the casing for effecting operation of the shutter mechanism; a flash firing mechanism within the casing, said mechanism including a cantilever spring having an energized condition from which the spring is releasable to effect firing of the photoflash lamp, said mechanism including means for interconnecting said spring and said body release in the energized condition of said spring to release the spring and effect firing of the flashlamp in synchronism with operation of the shutter mechanism; and a setting lever accessible from outside the casing and movable from a first position to a second position to return the spring to the energized condition after release of said spring bY said interconnecting means.
Claim 2
Dependent Claim
178 words
A photographic camera for exposing film receivable in the camera and usable with disposable photoflash lamps; the lamps including a hermetically sealed envelope containing combustible material; the camera being adapted to be hand held and comprising: a casing; means for removably receiving a photoflash lamp on the casing; a shutter mechanism in the casing operative to expose film receivable in the camera; a body release on the casing for effecting operation of the shutter mechanism; a flash firing mechanism within the casing, said mechanism including a cantilever spring having an energized condition from which the spring is releasable to effect firing of the photoflash lamp, said mechanism including means for interconnecting said spring and said body release in the energized condition of said spring to release the spring and effect firing of the flashlamp in synchronism with operation of the shutter mechanism; and a setting lever accessible from outside the casing and movable from a first position to a second position to return the spring to the energized condition after release of said spring bY said interconnecting means.
Claim 3
Dependent Claim
30 words
A photographic camera as claimed in claim 1, wherein said photoflash lamp includes a percussive firing element, and said spring is releasable to engage the element to fire the lamp.
Claim 4
Dependent Claim
38 words
A photographic camera as claimed in claim 2, wherein said firing element is a percussively ignitable primer element located at the base of the hermetically sealed envelope, and said spring is releasably directly to engage the primer element.
Claim 5
Dependent Claim
26 words
A photographic camera as claimed in claim 1, wherein said spring is releasable to effect a striking force at a velocity of 500 to 6,000 cms/sec.
Claim 6
Dependent Claim
17 words
A photographic camera as claimed in claim 1 wherein said spring is of substantially rectangular cross section.
Claim 7
Dependent Claim
164 words
A photographic camera for exposing film and usable with disposable photoflash lamps; the lamps including a hermetically sealed envelope containing combustible material; the camera being adapted to be hand held and comprising: a casing; means for receiving a photoflash lamp on the casing; a shutter mechanism in the casing operative to expose film in the camera; a body release on the casing for effecting operation of the shutter mechanism; a flash firing mechanism within the casing, said mechanism including a cantilever spring having an energized position from which the spring is releasable to effect firing of the photoflash lamp; a latch positioned to engage and maintain said spring in the energized position, said latch being movable to release said spring; means for moving said latch to release said spring in response to operation of said shutter mechanism by said body release; and a setting member accessible from outside the casing for moving said spring into latching engagement with said latch to energize the spring.
Claim 8
Dependent Claim
164 words
A photographic camera for exposing film and usable with disposable photoflash lamps; the lamps including a hermetically sealed envelope containing combustible material; the camera being adapted to be hand held and comprising: a casing; means for receiving a photoflash lamp on the casing; a shutter mechanism in the casing operative to expose film in the camera; a body release on the casing for effecting operation of the shutter mechanism; a flash firing mechanism within the casing, said mechanism including a cantilever spring having an energized position from which the spring is releasable to effect firing of the photoflash lamp; a latch positioned to engage and maintain said spring in the energized position, said latch being movable to release said spring; means for moving said latch to release said spring in response to operation of said shutter mechanism by said body release; and a setting member accessible from outside the casing for moving said spring into latching engagement with said latch to energize the spring.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |