Patent US3705538A successfully refreshed from Google Patents.
US3705538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic apparatus for use with impeller-actuated sources of artificial light
Assignee: Agfa Gevaert AG
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Filing: 1971-05-26
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Granted: 1972-12-12
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Expires: 1991-05-26
Abstract
Abstract A still camera with an indexible socket for flashcubes of the type having cartridges which must be struck in order to fire the respective lamps. The cartridge for that lamp which faces the subject can be struck by the pin of an elastic impeller which is mounted in the housing and tends to maintain its pin in a retracted position. The base of the properly inserted flashcube depresses a shaft to stress an L-shaped leaf spring which is coupled to the shaft and to the impeller. A release element is movable with reference to the camera body to engage the impeller and to thereby move the spring from a first stable position through and beyond a neutral position so that the spring snaps over to assume a second stable position and to thereby propel the pin against the cartridge. The shaft can adjust the shutter in response to insertion of the base into the socket to select an exposure time which is best suited for the making of exposures with artificial illumination of the subject.
Inventors
- 👤 Johann Putscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:35
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/04; G03B15/0452; G03B15/0468; G03B15/0478; G03B15/0484
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
186 words
In a photographic apparatus, the combination of a housing; a source of artificial light having at least one impact receiving portion arranged to effect artificial illumination of a subject by said source in response to reception of an impact and a stressing portion movable with reference to said housing to and from an operative position; an impeller mounted in said housing and having an actuating portion movable from a first to a second position to thereby strike against said impact receiving portion in the operative position of said stressing portion; biasing means movable from a first stable position through a neutral position to a second stable position to thereby propel said actuating portion to said second position; tensioning means movable from an idle position to an operative position in response to movement of said stressing portion to said operative position to thereby stress said biasing means; and release means actuatable to move said biasing means from said first stable position to and beyond said neutral position whereby said biasing means automatically advances toward said second stable position to propel said actuating portion to said second position.
Claim 2
Dependent Claim
186 words
In a photographic apparatus, the combination of a housing; a source of artificial light having at least one impact receiving portion arranged to effect artificial illumination of a subject by said source in response to reception of an impact and a stressing portion movable with reference to said housing to and from an operative position; an impeller mounted in said housing and having an actuating portion movable from a first to a second position to thereby strike against said impact receiving portion in the operative position of said stressing portion; biasing means movable from a first stable position through a neutral position to a second stable position to thereby propel said actuating portion to said second position; tensioning means movable from an idle position to an operative position in response to movement of said stressing portion to said operative position to thereby stress said biasing means; and release means actuatable to move said biasing means from said first stable position to and beyond said neutral position whereby said biasing means automatically advances toward said second stable position to propel said actuating portion to said second position.
Claim 3
Dependent Claim
41 words
The combination as defined in claim 1, wherein said source comprises a flashcube having at least one lamp and said impact receiving portion includes a cartridge which fires said lAmp in response to reception of an impact from said actuating portion.
Claim 4
Dependent Claim
39 words
The combination as defined in claim 1, wherein said biasing means is arranged to reassume said first stable position upon completed actuation of said release means at least when said stressing portion is out of said operative position thereof.
Claim 5
Dependent Claim
79 words
The combination as defined in claim 3, wherein said biasing means comprises a first portion which is coupled with said tensioning means and a second portion which is coupled with said impeller, said first portion being shifted by said tensioning means with reference to said second portion in response to movement of said stressing portion from the operative position thereof so that said biasing means does not reach said neutral position in response to actuation of said release means.
Claim 6
Dependent Claim
80 words
The combination as defined in claim 1, wherein said biasing means comprises a leaf spring having two mutually inclined portions one of which is coupled to said tensioning means at a first point and the other of which is coupled to said impeller at a second point located behind said first point in the first stable position of said biasing means, as considered in the direction of movement of said actuating portion from the first to the second position thereof.
Claim 7
Dependent Claim
29 words
The combination as defined in claim 1, wherein said impeller consists at least in part of elastomeric material, and further comprising means for securing said impeller to said housing.
Claim 8
Dependent Claim
24 words
The combination as defined in claim 1, wherein said tensioning means comprises a shaft which is reciprocable between said idle and operative positions thereof.
Claim 9
Dependent Claim
44 words
The combination as defined in claim 1, further comprising adjustable exposure time selecting means provided in said housing and means for adjusting said selecting means to furnish a predetermined exposure time in response to movement of said tensioning means to the operative position thereof.
Claim 10
Dependent Claim
42 words
The combination as defined in claim 1, wherein said impeller further comprises an elastic portion which biases said actuating portion to said first position with a force which is weaker than the force of said biasing means in the stressed condition thereof.
References Cited (Backward Citations)
US3576155A
Cited
US3602618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |