US3323779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overhead hoist and brake therefor
Assignee: Ingersoll Rand Co
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Filing: 1965-09-13
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Granted: 1967-06-06
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Expires: 1985-09-13
Abstract
No abstract record available.
Inventors
- 👤 Elmer B Burnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:13
CPC Classifications
B; B66; B66D; B66D3/00; B66D3/18; B66D3/20; B66D3/22; B66D5/00; B66D5/02; B66D5/12; B66D2700/00; B66D2700/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
233 words
IN AN OVERHEAD HOIST HAVING A POWER TRANSMISSION HOUSING AND MEANS DISPOSED IN THE HOUSING AND EXTENDING THEREFROM FOR RAISING AND LOWERING A LOAD AND SUPPORTING AN ELEVATED LOAD, A POWER TRANSMISSION AND BRAKE MECHANISM COMPRISING: A PLANETARY GEAR SYSTEM DISPOSED IN THE HOUSING AND HAVING A POWER INPUT GEAR ADAPTED TO BE ROTATABLY DRIVEN, A POWER OUTPUT GEAR CONNECTED TO THE LOAD SUPPORTING MEANS FOR RAISING A LOAD WHEN ROTATED IN ONE DIRECTION AND FOR LOWERING A LOAD WHEN ROTATED IN THE OPPOSITE DIRECTION, AND PLANETARY GEAR MEANS INTERCONNECTING THE POWER INPUT AND OUTPUT GEARS FOR PROVIDING A DRIVING CONNECTION THEREBETWEEN; BRAKE MEANS DISPOSED IN THE HOUSING AND HAVING FRICTION MEANS MOVABLE AXIALLY INTO AND OUT OF FRICTIONAL ENGAGEMENT WITH ONE ANOTHER; ONE OF THE FRICTION MEANS BEING CONNECTED AGAINST ROTATION TO THE HOUSING AND THE OTHER FRICTION MEANS BEING CONNECTED TO THE PLANETARY GEAR SYSTEM FOR ROTATION RELATIVE TO SAID ONE OF THE FRICTION MEANS WHEN THE POWER OUTPUT GEAR ROTATES IN A DIRECTION TO LOWER A LOAD; BRAKE GEAR MEANS DISPOSED IN THE HOUSING FOR LIMITED ROTATION BETWEEN A FIRST AND SECOND POSITION, AND HAVING CAM MEANS OPERABLE IN RESPONSE TO THE LIMITED ROTATION FOR AXIAL MOVEMENT OF THE BRAKE GEAR MEANS AWAY FROM SAID BRAKE MEANS TO PERMIT ROTATION OF SAID OTHER FRICTION MEANS WHEN THE BRAKE GEAR MEANS IS ROTATED TO ITS FIRST POSITION AND FOR CAUSING THE
Claim 2
Dependent Claim
233 words
IN AN OVERHEAD HOIST HAVING A POWER TRANSMISSION HOUSING AND MEANS DISPOSED IN THE HOUSING AND EXTENDING THEREFROM FOR RAISING AND LOWERING A LOAD AND SUPPORTING AN ELEVATED LOAD, A POWER TRANSMISSION AND BRAKE MECHANISM COMPRISING: A PLANETARY GEAR SYSTEM DISPOSED IN THE HOUSING AND HAVING A POWER INPUT GEAR ADAPTED TO BE ROTATABLY DRIVEN, A POWER OUTPUT GEAR CONNECTED TO THE LOAD SUPPORTING MEANS FOR RAISING A LOAD WHEN ROTATED IN ONE DIRECTION AND FOR LOWERING A LOAD WHEN ROTATED IN THE OPPOSITE DIRECTION, AND PLANETARY GEAR MEANS INTERCONNECTING THE POWER INPUT AND OUTPUT GEARS FOR PROVIDING A DRIVING CONNECTION THEREBETWEEN; BRAKE MEANS DISPOSED IN THE HOUSING AND HAVING FRICTION MEANS MOVABLE AXIALLY INTO AND OUT OF FRICTIONAL ENGAGEMENT WITH ONE ANOTHER; ONE OF THE FRICTION MEANS BEING CONNECTED AGAINST ROTATION TO THE HOUSING AND THE OTHER FRICTION MEANS BEING CONNECTED TO THE PLANETARY GEAR SYSTEM FOR ROTATION RELATIVE TO SAID ONE OF THE FRICTION MEANS WHEN THE POWER OUTPUT GEAR ROTATES IN A DIRECTION TO LOWER A LOAD; BRAKE GEAR MEANS DISPOSED IN THE HOUSING FOR LIMITED ROTATION BETWEEN A FIRST AND SECOND POSITION, AND HAVING CAM MEANS OPERABLE IN RESPONSE TO THE LIMITED ROTATION FOR AXIAL MOVEMENT OF THE BRAKE GEAR MEANS AWAY FROM SAID BRAKE MEANS TO PERMIT ROTATION OF SAID OTHER FRICTION MEANS WHEN THE BRAKE GEAR MEANS IS ROTATED TO ITS FIRST POSITION AND FOR CAUSING THE
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) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |