US3583301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic apparatus
Assignee: Polaroid Corp
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Filing: 1968-09-16
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Granted: 1971-06-08
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Expires: 1988-09-16
Abstract
Abstract Apparatus supporting a multilamp photoflash assembly responsive to a thermal discharge of one lamp of the assembly for selecting another lamp for subsequent ignition. A bimetallic element functions as part of an escapement mechanism incorporating two movements of a bimetallic element thereby indexing a multilamp photoflash assembly.
Inventors
- 👤 Richard R Wareham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:44
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/04; G03B15/041; G03B15/0431
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
108 words
Photographic apparatus electrically connectable to a photoflash lamp ignition circuit, said apparatus comprising: a. means movably supporting a multilamp photoflash assembly for directing each lamp of said assembly toward a scene to be photographed one at a time in succession, said lamps being connected in said circuit for ignition wHen directed toward said scene; b. means for movably biasing said supporting means; and c. thermal radiation responsive means for restraining movement of said supporting means and for releasing said supporting means for movement in response to ignition of the lamp directed toward said scene to thereby permit another lamp to be directed toward said scene for subsequent ignition.
Claim 2
Dependent Claim
108 words
Photographic apparatus electrically connectable to a photoflash lamp ignition circuit, said apparatus comprising: a. means movably supporting a multilamp photoflash assembly for directing each lamp of said assembly toward a scene to be photographed one at a time in succession, said lamps being connected in said circuit for ignition wHen directed toward said scene; b. means for movably biasing said supporting means; and c. thermal radiation responsive means for restraining movement of said supporting means and for releasing said supporting means for movement in response to ignition of the lamp directed toward said scene to thereby permit another lamp to be directed toward said scene for subsequent ignition.
Claim 3
Dependent Claim
33 words
Apparatus according to claim 1 wherein said thermal radiation responsive means comprises a bimetallic element positioned adjacent the lamp directed toward said scene in the path of thermal radiation resulting from ignition thereof.
Claim 4
Dependent Claim
88 words
Photographic apparatus for locating the individual lamps of a packaged multilamp flash assembly in an operative ignitable position comprising: means for rotatably supporting said rotatably supporting multilamp assembly; drive means for urging said multilamp assembly to rotate to locate successive ones of said lamps in said operative position for ignition; and means reactive to thermal radiation from the said ignition of one of said lamps for causing said drive means to rotate said multilamp assembly to locate a next succeeding one of said lamps in said operative position.
Claim 5
Dependent Claim
88 words
Photographic apparatus for locating the individual lamps of a packaged multilamp flash assembly in an operative ignitable position comprising: means for rotatably supporting said rotatably supporting multilamp assembly; drive means for urging said multilamp assembly to rotate to locate successive ones of said lamps in said operative position for ignition; and means reactive to thermal radiation from the said ignition of one of said lamps for causing said drive means to rotate said multilamp assembly to locate a next succeeding one of said lamps in said operative position.
Claim 6
Dependent Claim
73 words
Photographic apparatus according to claim 3 wherein said drive means comprises: spring means for biasing said multilamp assembly to cause said rotation of said multilamp assembly; and regulating means, actuable to release said multilamp assembly for rotation when a lamp therewithin is moved in said operative position and is ignited, and actuable to selectively interrupt the said rotation of said multilamp assembly when a said lamp therewithin is moved into said operative position.
Claim 7
Dependent Claim
25 words
Photographic apparatus according to claim 3 wherein said means reactive to thermal radiation from the ignition of one of said lamps is a bimetallic element.
Claim 8
Dependent Claim
31 words
Apparatus according to claim 5 wherein said bimetallic element is positioned adjacent a lamp directed toward a scene to be photographed in the path of thermal radiation resulting from ignition thereof.
Claim 9
Dependent Claim
39 words
Photographic apparatus according to claim 3 wherein said drive means comprises: spring means for biasing said multilamp assembly to cause said rotation; and regulating means for locating successive ones of said lamps of said assembly at said operative position.
Claim 10
Dependent Claim
31 words
Photographic apparatus according to claim 7 wherein said regulating means is actuable to release said multilamp assembly for rotation when a lamp therewithin is in said operative position and is ignited.
Claim 11
Dependent Claim
21 words
Photographic apparatus according to claim 8 wherein said spring means is configured to be manually loaded prior to said lamp ignition.
Claim 12
Dependent Claim
37 words
Photographic apparatus according to claim 8 wherein said means reactive to thermal radiation is movable in one direction in response to said thermal radiation, and subsequently, is oppositely movable for causing said actuation of said regulating means.
Claim 13
Dependent Claim
55 words
Photographic apparatus according to claim 10 wherein said one movement of said means reactive to thermal radiation causes said regulating means to effect partial rotation of said multilamp assembly and, said subsequent opposite movement of said thermal reactive means causes said regulating means to effect complemental rotation of said multilamp assembly into said operative position.
Claim 14
Dependent Claim
24 words
Photographic apparatus according to claim 7 wherein said thermal reactive means is configured to actuate said regulating means when responding to said thermal radiation.
Claim 15
Dependent Claim
40 words
Photographic apparatus according to claim 7 wherein said regulating means is operable to allow rotation of said multilamp assembly and selectively interrupts the said rotation of said multilamp assembly when a said lamp therewithin is moved into said operative position.
Claim 16
Dependent Claim
29 words
Photographic apparatus according to claim 7 wherein said spring means is a coiled spring placed around the axis of rotation of said means for rotatably supporting said multilamp assembly.
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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |