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Patent US3072264A successfully refreshed from Google Patents.
US3072264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overload safety control apparatus for hoisting equipment
Assignee: Westinghouse Bremsen GmbH
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Filing: 1961-03-22
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Granted: 1963-01-08
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Expires: 1981-03-22
Abstract
No abstract record available.
Inventors
- 👤 Sennebogen Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:19
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/88; B66C23/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
IN A HOISTING APPARATUS HAVING A SUPERSTRUCTURE, A BOOM PIVOTALLY SUPPORTED ON SAID SUPERSTRUCTURE AT A POINT SPACED FROM THE SUPERSTRUCTURE CENTER OF GRAVITY AND BEING MOVABLE IN A VERTICAL PLANE, A CABLE OPERATIVELY CONNECTED TO THE FREE END OF SAID BOOM FOR MOVING SAID BOOM INTO DIFFERENT ANGULAR POSITIONS AND HAVING A RETURN RUN, AND A SAFETY OVERLOAD DEVICE FOR CUTTING OFF FURTHER HOISTING WHEN THE LOADING ON SAID BOOM IS SUBSTANTIALLY EQUAL TO THE PITCHING MOMENT OF SAID APPARATUS IN THE DIFFERENT ANGULAR POSITIONS THEREOF COMPRISING A LEVER CONNECTED AT ONE END TO SAID CABLE RETURN RUN AND PIVOTABLE ABOUT A FIXED FULCRUM MOUNTED ON SAID SUPERSTRUCTURE, AND SPRING MEANS HAVING A PREDETERMINED LOADING RESISTING COMPRESSION CONTACTING THE OTHER END OF SAID LEVER OPPOSING THE TENSION FORCES IN SAID CABLE RETURN RUN DURING HOISTING SO AS TO PRECLUDE TURNING OF SAID LEVER WHEN THE MOMENTS EXTERTED BY THE TENSION FORCES IN SAID CABLE RE-
Claim 2
Dependent Claim
156 words
IN A HOISTING APPARATUS HAVING A SUPERSTRUCTURE, A BOOM PIVOTALLY SUPPORTED ON SAID SUPERSTRUCTURE AT A POINT SPACED FROM THE SUPERSTRUCTURE CENTER OF GRAVITY AND BEING MOVABLE IN A VERTICAL PLANE, A CABLE OPERATIVELY CONNECTED TO THE FREE END OF SAID BOOM FOR MOVING SAID BOOM INTO DIFFERENT ANGULAR POSITIONS AND HAVING A RETURN RUN, AND A SAFETY OVERLOAD DEVICE FOR CUTTING OFF FURTHER HOISTING WHEN THE LOADING ON SAID BOOM IS SUBSTANTIALLY EQUAL TO THE PITCHING MOMENT OF SAID APPARATUS IN THE DIFFERENT ANGULAR POSITIONS THEREOF COMPRISING A LEVER CONNECTED AT ONE END TO SAID CABLE RETURN RUN AND PIVOTABLE ABOUT A FIXED FULCRUM MOUNTED ON SAID SUPERSTRUCTURE, AND SPRING MEANS HAVING A PREDETERMINED LOADING RESISTING COMPRESSION CONTACTING THE OTHER END OF SAID LEVER OPPOSING THE TENSION FORCES IN SAID CABLE RETURN RUN DURING HOISTING SO AS TO PRECLUDE TURNING OF SAID LEVER WHEN THE MOMENTS EXTERTED BY THE TENSION FORCES IN SAID CABLE RE-
References Cited (Backward Citations)
US1575687A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |