US3608334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for limiting torque
Assignee: Individual
•
Filing: 1969-07-08
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Granted: 1971-09-28
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Expires: 1989-07-08
Abstract
Abstract THREAD-CUTTING DEVICES, MACHINE TOOLS AND TORQUE WRENCHES REQUIRE A TORQUE LIMITING DEVICE TO AVOID THE DANGER OF OVERLOAD, THIS INVENTION RELATES TO A FLUID OPERATED CLUTCH MECHANISM, WHEREIN THE FLUID HAS A COMPRESSIBLE COMPONENT SUCH AS AIR IN A MIXTURE WITH A HYDRAULIC FLUID. AT LEAST ONE OPERATING PISTON IS MOVED BY THE FLUID, BY MOVEMENT OF A TORQUE LIMIT SETTING DEVICE, EITHER RADIALLY OR AXIALLY TO ENGAGE A SECONDARY MEMBER SO THAT TORQUE IS TRANSMITTED UP TO THE DESIRED LIMIT AT WHICH POINT THE RESILIENCE OF THE FLUID PERMITS THE PISTON TO DISENGAGE FROM THE SECONDARY MEMBER SO THAT THE CLUTCH SLIPS.
Inventors
- 👤 Karl Zinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:27
CPC Classifications
F; F16; F16D; F16D7/00; F16D7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |