US3297337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera crab dolly
Assignee: COLORTRAN IND Inc
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Filing: 1965-05-03
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Granted: 1967-01-10
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Expires: 1985-05-03
Abstract
No abstract record available.
Inventors
- 👤 Sargent William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:26
CPC Classifications
F; F16; F16M; F16M11/00; F16M11/42; F16M2200/00; F16M2200/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
A CAMERA DOLLY COMPRISING: A SUPPORTING BASE INCLUDING A PAIR OF FRONT CASTER WHEELS AND A PAIR OF REAR CASTER WHEELS, EACH SAID WHEEL HAVING A GENERALLY VERTICAL SWIVEL AXIS AND A GENERALLY HORIZONTAL ROTATION AXIS AND BEING ROTATABLE ON ITS SWIVEL AXIS TO A NEUTRAL POSITION WHEREIN THE ROTATION AXIS OF THE RESPECTIVE WHEEL IS APPROXIMATELY NORMAL TO THE LONGITUDINAL CENTER LINE OF THE DOLLY, A STEERING HANDLE ROTATABLY SUPPORTED ON SAID BASE, AND TRANSMISSION MEANS MOUNTED ON SAID BASE AND OPERATIVELY CONNECTED BETWEEN SAID WHEELS AND SAID STEERING HANDLE FOR SELECTIVELY LOCKING EITHER WHEEL PAIR IN THEIR NEUTRAL POSITIONS WHILE DRIVEABLY COUPLING THE OTHER WHEEL PAIR TO SAID HANDLE FOR ROTATION OF SAID OTHER WHEEL IN UNISON ON THEIR RESPECTIVE SWIVEL AXES IN SUCH MANNER THAT THE ROTATION AXES OF SAID OTHER WHEEL PAIR REMAIN APPROXIMATELY PARALLEL, AND DRIVEABLY COUPLING BOTH SAID WHEEL PAIRS TO SAID STEERING HANDLE FOR ROTATION OF BOTH WHEEL PAIR IN UNISON ON THEIR RESPECTIVE SWIVEL AXES IN SUCH MANNER THAT THE ROTATION AXES OF BOTH WHEEL PAIRS REMAIN APPROXIMATELY PARALLEL.
Claim 2
Dependent Claim
177 words
A CAMERA DOLLY COMPRISING: A SUPPORTING BASE INCLUDING A PAIR OF FRONT CASTER WHEELS AND A PAIR OF REAR CASTER WHEELS, EACH SAID WHEEL HAVING A GENERALLY VERTICAL SWIVEL AXIS AND A GENERALLY HORIZONTAL ROTATION AXIS AND BEING ROTATABLE ON ITS SWIVEL AXIS TO A NEUTRAL POSITION WHEREIN THE ROTATION AXIS OF THE RESPECTIVE WHEEL IS APPROXIMATELY NORMAL TO THE LONGITUDINAL CENTER LINE OF THE DOLLY, A STEERING HANDLE ROTATABLY SUPPORTED ON SAID BASE, AND TRANSMISSION MEANS MOUNTED ON SAID BASE AND OPERATIVELY CONNECTED BETWEEN SAID WHEELS AND SAID STEERING HANDLE FOR SELECTIVELY LOCKING EITHER WHEEL PAIR IN THEIR NEUTRAL POSITIONS WHILE DRIVEABLY COUPLING THE OTHER WHEEL PAIR TO SAID HANDLE FOR ROTATION OF SAID OTHER WHEEL IN UNISON ON THEIR RESPECTIVE SWIVEL AXES IN SUCH MANNER THAT THE ROTATION AXES OF SAID OTHER WHEEL PAIR REMAIN APPROXIMATELY PARALLEL, AND DRIVEABLY COUPLING BOTH SAID WHEEL PAIRS TO SAID STEERING HANDLE FOR ROTATION OF BOTH WHEEL PAIR IN UNISON ON THEIR RESPECTIVE SWIVEL AXES IN SUCH MANNER THAT THE ROTATION AXES OF BOTH WHEEL PAIRS REMAIN APPROXIMATELY PARALLEL.
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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |