Patent US3298481A successfully refreshed from Google Patents.
US3298481A
Expired / Lapsed
US
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Torque release and shut off device for rotary pneumatic tools
Assignee: Chicago Pneumatic Tool Co LLC
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Filing: 1963-07-10
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Granted: 1967-01-17
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Expires: 1983-07-10
Abstract
No abstract record available.
Inventors
- 👤 Raymond J Schaedler
- 👤 Roger C Simmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:52
CPC Classifications
F; F16; F16D; F16D43/00; F16D43/02; F16D43/20; F16D43/202; F16D43/204; F16D43/206; B; B25; B25B; B25B23/00; B25B23/14; B25B23/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
IN A ROTARY POWER TOOL INCLUDING A PNEUMATICALLY POWERED ROTOR, AND A SPINDLE, A TWO-PART SPRING LOADED CLUTCH INTERMEDIATELY OF THE ROTOR AND THE SPINDLE DRIVINGLY CONNECTING THE SPINDLE WITH THE ROTOR, MEANS FOR MOVING ONE PART OF THE CLUTCH AXIALLY RELATIVE TO THE OTHER UPON THE SPINDLE REALIZING A PREDETERMINED TORQUE LOAD, AND OTHER MEANS FOR RESPONDING TO SUCH AXIAL MOVEMENT OF THE SAID ONE PART OF THE CLUTCH TO DRIVE THE LATTER CLUTCH PART CLEAR OF THE OTHER PART AND SIMULTANEOUSLY WITH SUCH ACTION TO INTERRUPT PNEUMATIC FLOW TO THE ROTOR.
Claim 2
Dependent Claim
93 words
IN A ROTARY POWER TOOL INCLUDING A PNEUMATICALLY POWERED ROTOR, AND A SPINDLE, A TWO-PART SPRING LOADED CLUTCH INTERMEDIATELY OF THE ROTOR AND THE SPINDLE DRIVINGLY CONNECTING THE SPINDLE WITH THE ROTOR, MEANS FOR MOVING ONE PART OF THE CLUTCH AXIALLY RELATIVE TO THE OTHER UPON THE SPINDLE REALIZING A PREDETERMINED TORQUE LOAD, AND OTHER MEANS FOR RESPONDING TO SUCH AXIAL MOVEMENT OF THE SAID ONE PART OF THE CLUTCH TO DRIVE THE LATTER CLUTCH PART CLEAR OF THE OTHER PART AND SIMULTANEOUSLY WITH SUCH ACTION TO INTERRUPT PNEUMATIC FLOW TO THE ROTOR.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |