Patent US3643567A successfully refreshed from Google Patents.
US3643567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera latch
Assignee: Polaroid Corp
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Filing: 1969-12-16
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Granted: 1972-02-22
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Expires: 1989-12-16
Abstract
Abstract A folding camera including a plurality of housing sections pivotally coupled for movement between a compact, folded position and an extended, operative position. A shutter-actuating member is provided for actuating the camera''s shutter and a detent located adjacent the shutter actuating member is adapted for movement into locking engagement with the shutter-actuating member to prevent actuation of the camera''s shutter in all positions of the camera except the fully extended, operative position. In an alternative embodiment the camera''s shutter actuating member is provided with a solenoid-controlled detent. The solenoid circuit includes three switches connected in series; the first being closed by movement of the shutter-actuating member; the second being closed only when the camera is in the fully extended position; and the third being closed only when the camera''s loading door is closed thereby insuring operation of the shutter only when the camera is in the fully extended position and the loading door is closed.
Inventors
- 👤 Lawrence M Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:04
CPC Classifications
G; G03; G03B; G03B19/00; G03B19/02; G03B19/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
139 words
A folding camera including a plurality of housing sections pivotally coupled to each other for movement between a fully extended, operative position, and a folded, compact position, the improvement comprising, in combination: shutter means including release means enclosed within one of said housing sections for controlling the admission of light into the interior of said camera to expose a film unit located in position for exposure; shutter-actuating means coupled to said release means for operating said shutter means; and control means including detent means and cam means for moving said detent means into locking engagement with said shutteractuating means upon initial movement of at least one of said housing sections toward said folded position, said detent means preventing operation of said release means by said shutter actuating means in all positions of said camera except said fully extended position.
Claim 2
Dependent Claim
139 words
A folding camera including a plurality of housing sections pivotally coupled to each other for movement between a fully extended, operative position, and a folded, compact position, the improvement comprising, in combination: shutter means including release means enclosed within one of said housing sections for controlling the admission of light into the interior of said camera to expose a film unit located in position for exposure; shutter-actuating means coupled to said release means for operating said shutter means; and control means including detent means and cam means for moving said detent means into locking engagement with said shutteractuating means upon initial movement of at least one of said housing sections toward said folded position, said detent means preventing operation of said release means by said shutter actuating means in all positions of said camera except said fully extended position.
Claim 3
Dependent Claim
60 words
A folding camera as defined in claim 1 wherein said detent means is mounted on said one housing section and said cam means is mounted on another of said housing sections whereby movement of one of said one and said other housing sections out of said fully extended position moves said detent means into locking engagement with said shutter-actuating means.
Claim 4
Dependent Claim
35 words
A folding camera as defined in claim 2 wherein said shutter-actuating means is substantially located wholly within the confines of said one housing section to lessen the probability of accidental actuation of said shutter means.
Claim 5
Dependent Claim
64 words
A folding camera as defined in claim 3 wherein said detent means include a resilient member mounted on said one housing section and adapted for movement into locking engagement with said shutter-actuating means and said cam means controls movement of said resilient member into and out of locking engagement with said shutter-actuating means as said housing sections move between said extended and folded positions.
Claim 6
Dependent Claim
175 words
A folding camera including a plurality of housing sections pivotally coupled to each other for movement between a fully extended, operative position, and a folded, compact position, the improvement comprising, in combination: shutter means including release means enclosed within one of said housing sections for controlling the admission of light into the interior of said camera to expose a film unit located in position for exposure; shutter-actuating means coupled to said release means for operating said shutter means; and control means responsive to initial movement of at least one of said housing sections toward said folded position for preventing operation of said release means by said shutter-actuating means, said control means include detent means movable between a first position in which it prevents operation of said release means by said shutter-actuating means and a second position wherein said shutter-actuating means may operate said release means and an electrical circuit including a source of power and means connected to said source of power for moving said detent means from said first position to said second position.
Claim 7
Dependent Claim
175 words
A folding camera including a plurality of housing sections pivotally coupled to each other for movement between a fully extended, operative position, and a folded, compact position, the improvement comprising, in combination: shutter means including release means enclosed within one of said housing sections for controlling the admission of light into the interior of said camera to expose a film unit located in position for exposure; shutter-actuating means coupled to said release means for operating said shutter means; and control means responsive to initial movement of at least one of said housing sections toward said folded position for preventing operation of said release means by said shutter-actuating means, said control means include detent means movable between a first position in which it prevents operation of said release means by said shutter-actuating means and a second position wherein said shutter-actuating means may operate said release means and an electrical circuit including a source of power and means connected to said source of power for moving said detent means from said first position to said second position.
Claim 8
Dependent Claim
56 words
A folding camera as defined in claim 5 wherein said electrical circuit includes switch means responsive to movement of said camera toward said folded position for opening said circuit thereby allowing movement of said detent means from said second position to said first position to prevent operation of said release means by said shutter actuating means.
Claim 9
Dependent Claim
53 words
A folding camera as defined in claim 6 wherein said camera includes a film-loading door, said electrical circuit further including second switch means connected in series with said first-mentioned switch means for opening said circuit when said film-loading door is open thereby preventing operation of said release means by said shutter actuating means.
Claim 10
Dependent Claim
72 words
A folding camera as defined in claim 7 wherein said electrical circuit includes third switch means connected in series with said first and second switch meAns, said third switch means being coupled to said shutter-actuating means whereby initial movement of said shutter-actuating means closes said third switch means to move said detent means into said second position to allow operation of said release means by further movement of said shutter actuating means.
Claim 11
Dependent Claim
107 words
A folding camera including a plurality of housing sections pivotally coupled to each other for movement between a fully extended operative position and a compact, folded position and a film-loading door providing ingress to said camera for locating a film unit in position for exposure, the improvement comprising, in combination: shutter means including release means for controlling the admission of light into said camera to expose a film unit located in position for exposure; shutter-actuating means coupled to said release means for operating said shutter means; and control means for preventing operation of said release means by said shutter-actuating means when said film loading door is open.
Claim 12
Dependent Claim
107 words
A folding camera including a plurality of housing sections pivotally coupled to each other for movement between a fully extended operative position and a compact, folded position and a film-loading door providing ingress to said camera for locating a film unit in position for exposure, the improvement comprising, in combination: shutter means including release means for controlling the admission of light into said camera to expose a film unit located in position for exposure; shutter-actuating means coupled to said release means for operating said shutter means; and control means for preventing operation of said release means by said shutter-actuating means when said film loading door is open.
Claim 13
Dependent Claim
35 words
A folding camera as defined in claim 9 wherein said control means includes means for preventing operation of said release means by said shutter-actuating means when said camera is out of said fully extended position.
Claim 14
Dependent Claim
76 words
A folding camera as defined in claim 10 wherein said control means include a solenoid and an electrical circuit including a source of power for controlling operation of said solenoid between a first position in which said solenoid prevents operation of said release means by said shutter-actuating means and a second position wherein said shutter-actuating means may operate said release means, said solenoid assuming said first position when not energized and said second position when energized.
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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |