Patent US3095979A successfully refreshed from Google Patents.
US3095979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overload device
Assignee: Individual
•
Filing: 1960-04-08
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Granted: 1963-07-02
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Expires: 1980-04-08
Abstract
No abstract record available.
Inventors
- 👤 Marvin E Silberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:40
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
IN A DEVICE FOR LIFTING INDETERMINATE WEIGHTS, MEANS FOR CAUSING OPERATION OF THE DEVICE IN A WEIGHT-LIFTING DIRECTION, AN ELECTRICAL CIRCUIT FOR CONTROLLING SUCH OPERATION, SPRING MEANS, OPERATIVELY CONNECTED TO SAID DEVICE AND DEFLECTABLE IN RESPONSE TO THE WEIGHT IMPOSED ON SAID DEVICE, SWITCH MEANS IN SAID CIRCUIT OPERATIVE IN RESPONSE TO DEFLECTION OF SAID SPRING MEANS BY A WEIGHT GREATER THAN A PREDETERMINED MAXIMUM TO PREVENT OPERATION OF THE LIFTING DEVICE IN A WEIGHT-LIFTING DIRECTION, AND MEANS MAINTAINING SAID SWITCH IN OPERATION-PREVENTING CONDITION UNTIL REDUCTION OF THE DEFLECTION OF THE SPRING MEANS CORRESPONDING TO REDUCTION OF THE IMPOSED WEIGHT TO A PREDETERMINED VALUE BELOW THE PREDETERMINED MAXIMUM.
Claim 2
Dependent Claim
108 words
IN A DEVICE FOR LIFTING INDETERMINATE WEIGHTS, MEANS FOR CAUSING OPERATION OF THE DEVICE IN A WEIGHT-LIFTING DIRECTION, AN ELECTRICAL CIRCUIT FOR CONTROLLING SUCH OPERATION, SPRING MEANS, OPERATIVELY CONNECTED TO SAID DEVICE AND DEFLECTABLE IN RESPONSE TO THE WEIGHT IMPOSED ON SAID DEVICE, SWITCH MEANS IN SAID CIRCUIT OPERATIVE IN RESPONSE TO DEFLECTION OF SAID SPRING MEANS BY A WEIGHT GREATER THAN A PREDETERMINED MAXIMUM TO PREVENT OPERATION OF THE LIFTING DEVICE IN A WEIGHT-LIFTING DIRECTION, AND MEANS MAINTAINING SAID SWITCH IN OPERATION-PREVENTING CONDITION UNTIL REDUCTION OF THE DEFLECTION OF THE SPRING MEANS CORRESPONDING TO REDUCTION OF THE IMPOSED WEIGHT TO A PREDETERMINED VALUE BELOW THE PREDETERMINED MAXIMUM.
References Cited (Backward Citations)
GB814642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-01 | 1966-12-31 | 1967-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-01 | 1970-12-31 | 1971-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-01 | 1974-12-31 | 1975-07-02 | $7700.00 | Window Closed / Lapsed |