US4057816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Accessory adapter
Assignee: Polaroid Corp
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Filing: 1976-01-13
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Granted: 1977-11-08
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Expires: 1996-01-13
Abstract
Abstract An adapter for connecting a camera not provided with a tripod socket to a tripod. The adapter comprises a housing, a threaded insert for receiving a tripod screw in the housing, and a dovetail shoe adapted to fit a cooperating dovetail slot in the camera bottom. The dovetail shoe is formed with an opening in which there is a brake assembly movable by a manually operable lever between locked and unlocked positions.
Inventors
- 👤 John C. Killian, Jr.
- 👤 John B. Morse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:59
CPC Classifications
F; F16; F16M; F16M11/00; F16M11/02; F16M11/04; F16M11/041; G; G03; G03B; G03B17/00; G03B17/56; G03B17/566; F16M2200/00; F16M2200/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
129 words
An adapter for securing a photographic accessory having a tripod screw to a camera having a dovetail slot, comprising a housing, means forming a tripod socket in said housing, a dovetail shoe mounted on said housing and adapted to extend into the dovetail slot in the camera, means forming an aperture in one side of said dovetail shoe, a lock slide, means mounting said lock slide in said aperture for movement between a first position within the confines of said dovetail shoe and a second position beyond the confines of said shoe, a resilient element mounted on said lock slide in position to engage the dovetail slot in said second position of said lock slide, and cam means for moving said lock slide between said first and second positions.
Claim 2
Dependent Claim
129 words
An adapter for securing a photographic accessory having a tripod screw to a camera having a dovetail slot, comprising a housing, means forming a tripod socket in said housing, a dovetail shoe mounted on said housing and adapted to extend into the dovetail slot in the camera, means forming an aperture in one side of said dovetail shoe, a lock slide, means mounting said lock slide in said aperture for movement between a first position within the confines of said dovetail shoe and a second position beyond the confines of said shoe, a resilient element mounted on said lock slide in position to engage the dovetail slot in said second position of said lock slide, and cam means for moving said lock slide between said first and second positions.
Claim 3
Dependent Claim
243 words
An adapter for releasably coupling a camera accessory to a camera of the type including a dovetail slot having first and second side portions, said adapter comprising: an adapter housing; a camera accessory mounted on said adapter housing; a dovetail shoe on said adapter housing having first and second side portions and being configured to extend into the dovetail slot of the camera with said first and second side portions of said shoe in engagement, respectively, with the first and second side portions of the dovetail slot such that said shoe is coupled to the dovetail slot for sliding movement relative thereto; brake means, including resilient means, mounted on said shoe for movement relative thereto between a first position wherein said brake means is located within the confines of said shoe so as to not engage either one of the first and second side portions of the dovetail slot when said shoe extends thereinto thereby allowing sliding movement of said shoe relative to said slot and a second position wherein at least said resilient means of said brake means extends outwardly beyond the confines of said shoe when said shoe is in the slot for engaging at least one of said first and second side portions of the slot and providing a frictional force that effectively inhibits sliding movement of said shoe relative to the slot; and means actuable for effecting the movement of said brake means between said first and second positions.
Claim 4
Dependent Claim
243 words
An adapter for releasably coupling a camera accessory to a camera of the type including a dovetail slot having first and second side portions, said adapter comprising: an adapter housing; a camera accessory mounted on said adapter housing; a dovetail shoe on said adapter housing having first and second side portions and being configured to extend into the dovetail slot of the camera with said first and second side portions of said shoe in engagement, respectively, with the first and second side portions of the dovetail slot such that said shoe is coupled to the dovetail slot for sliding movement relative thereto; brake means, including resilient means, mounted on said shoe for movement relative thereto between a first position wherein said brake means is located within the confines of said shoe so as to not engage either one of the first and second side portions of the dovetail slot when said shoe extends thereinto thereby allowing sliding movement of said shoe relative to said slot and a second position wherein at least said resilient means of said brake means extends outwardly beyond the confines of said shoe when said shoe is in the slot for engaging at least one of said first and second side portions of the slot and providing a frictional force that effectively inhibits sliding movement of said shoe relative to the slot; and means actuable for effecting the movement of said brake means between said first and second positions.
Claim 5
Dependent Claim
30 words
An adapter as defined in claim 2 wherein the dovetail slot of the camera is tapered and said shoe is tapered in a manner to conform to the tapered slot.
Claim 6
Dependent Claim
15 words
An adapter as defined in claim 2 wherein said camera accessory includes a tripod socket.
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) | 1980-11-07 | 1981-05-09 | 1981-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-07 | 1985-05-09 | 1985-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-07 | 1989-05-09 | 1989-11-08 | $7700.00 | Window Closed / Lapsed |