US3340964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Descent control mechanism
Assignee: Pacific Western Materials Inc
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Filing: 1965-11-03
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Granted: 1967-09-12
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Expires: 1985-11-03
Abstract
No abstract record available.
Inventors
- 👤 Sheldon W Glover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:43
CPC Classifications
A; A62; A62B; A62B1/00; A62B1/06; B; B64; B64D; B64D1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
217 words
IN A BRAKE CONSTRUCTION FOR BRAKING THE DESCENT OF A LOAD SUPPORTED BY A DEPENDING FLEXIBLE WEB, THE COMBINATION COMPRISING A TURNTABLE BRAKE HOUSING, FRICTION ROLL AND FULCRUM MEANS ABOUT WHICH SAID HOUSING IS TURNABLE, A FIRST SIDE OF SAID FRICTION ROLL AND FULCRUM MEANS DEFINING AN UNCONFINED AREA OF ENTRY INTO THE BRAKE HOUSING FOR RECEIVING A SUSPENSION VERTICALLY-DISPOSED FLEXIBLE WEB, LOAD-ENGAGING MEANS ANCHORED TO SAID HOUSING FROM WHICH A LOAD MAY DEPEND, SAID LOAD-ENGAGING MEANS BEING DISPOSED LATERALLY OF SAID FIRST SIDE OF SAID FRICTION ROLL AND FULCRUM MEANS AND LATERALLY OF A VERTICAL LINE DEFINED BY SUCH VERTICALLY-DISPOSED FLEXIBLE WEB; GUIDE MEANS DISPOSED LATERALLY TO THE OPPOSITE SIDE OF SAID FRICTION ROLL AND FULCRUM MEANS AND LATERALLY OF SUCH VERTICAL LINE; SAID GUIDE MEANS BEING ADAPTED TO GUIDE, AT LEAST, A LAYER OF SAID VERTICALLY-DISPOSED FLEXIBLE WEB ABOUT PERIPHERAL PORTIONS OF SAID FRICTION ROLL AND FULCRUM MEANS; AND MEANS FOR TURNING SAID BRAKE HOUSING ABOUT SAID FRICTION ROLL AND FULCRUM MEANS FOR VARYING THE RELATIONSHIP BETWEEN SAID GUIDE MEANS AND SAID FRICTION ROLL AND FULCRUM MEANS TO INCREASE THE OVERLYING EXTENT OF SAID VERTICALLY-DISPOSED FLEXIBLE WEB PORTION ABOUT SAID FRICTION ROLL AND FULCRUM MEANS IN ONE DIRECTION OF TURNING AND TO DECREASE SUCH OVERLYING EXTENT OF SAID WEB PORTION IN THE COUNTER-DIRECTION OF TURNING.
Claim 2
Dependent Claim
217 words
IN A BRAKE CONSTRUCTION FOR BRAKING THE DESCENT OF A LOAD SUPPORTED BY A DEPENDING FLEXIBLE WEB, THE COMBINATION COMPRISING A TURNTABLE BRAKE HOUSING, FRICTION ROLL AND FULCRUM MEANS ABOUT WHICH SAID HOUSING IS TURNABLE, A FIRST SIDE OF SAID FRICTION ROLL AND FULCRUM MEANS DEFINING AN UNCONFINED AREA OF ENTRY INTO THE BRAKE HOUSING FOR RECEIVING A SUSPENSION VERTICALLY-DISPOSED FLEXIBLE WEB, LOAD-ENGAGING MEANS ANCHORED TO SAID HOUSING FROM WHICH A LOAD MAY DEPEND, SAID LOAD-ENGAGING MEANS BEING DISPOSED LATERALLY OF SAID FIRST SIDE OF SAID FRICTION ROLL AND FULCRUM MEANS AND LATERALLY OF A VERTICAL LINE DEFINED BY SUCH VERTICALLY-DISPOSED FLEXIBLE WEB; GUIDE MEANS DISPOSED LATERALLY TO THE OPPOSITE SIDE OF SAID FRICTION ROLL AND FULCRUM MEANS AND LATERALLY OF SUCH VERTICAL LINE; SAID GUIDE MEANS BEING ADAPTED TO GUIDE, AT LEAST, A LAYER OF SAID VERTICALLY-DISPOSED FLEXIBLE WEB ABOUT PERIPHERAL PORTIONS OF SAID FRICTION ROLL AND FULCRUM MEANS; AND MEANS FOR TURNING SAID BRAKE HOUSING ABOUT SAID FRICTION ROLL AND FULCRUM MEANS FOR VARYING THE RELATIONSHIP BETWEEN SAID GUIDE MEANS AND SAID FRICTION ROLL AND FULCRUM MEANS TO INCREASE THE OVERLYING EXTENT OF SAID VERTICALLY-DISPOSED FLEXIBLE WEB PORTION ABOUT SAID FRICTION ROLL AND FULCRUM MEANS IN ONE DIRECTION OF TURNING AND TO DECREASE SUCH OVERLYING EXTENT OF SAID WEB PORTION IN THE COUNTER-DIRECTION OF TURNING.
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |