Patent US3080508A successfully refreshed from Google Patents.
US3080508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric control circuit
Assignee: American Brake Shoe Co
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Filing: 1958-04-07
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Granted: 1963-03-05
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Expires: 1978-04-07
Abstract
No abstract record available.
Inventors
- 👤 George M Hipple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:18
CPC Classifications
F; F16; F16P; F16P3/00; F16P3/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN A CONTROL CIRCUIT FOR A HYDRAULIC PRESS HAVING A VALVE FOR CONTROLLING THE OPERATION OF SAID PRESS, SOLENOID MEANS INCLUDING WINDING MEANS FOR CONTROLLING THE OPERATION OF SAID VALVE, CONDUCTOR MEANS FOR CONDUCTING ELECTRIC CURRENT TO SAID WINDING MEANS, A PAIR OF RESISTOR MEANS IN SAID CONDUCTOR MEANS, A PAIR OF SWITCHES, AND MEANS CONNECTING SAID SWITCHES EACH TO BY-PASS ONE OF SAID RESISTOR MEANS WHEREBY CLOSING OF BOTH OF SAID SWITCHES WILL BY-PASS BOTH OF SAID RESISTOR MEANS TO PASS ELECTRIC CURRENT TO SAID WINDING MEANS SUFFICIENT TO INITIATE OPERATION OF SAID SOLENOID AND THEREAFTER ONLY ONE OF SAID SWITCHES NEED BE MAINTAINED CLOSED TO PASS SUFFICIENT CURRENT TO SAID WINDING MEANS TO MAINTAIN SAID SOLENOID IN OPERATION.
Claim 2
Dependent Claim
120 words
IN A CONTROL CIRCUIT FOR A HYDRAULIC PRESS HAVING A VALVE FOR CONTROLLING THE OPERATION OF SAID PRESS, SOLENOID MEANS INCLUDING WINDING MEANS FOR CONTROLLING THE OPERATION OF SAID VALVE, CONDUCTOR MEANS FOR CONDUCTING ELECTRIC CURRENT TO SAID WINDING MEANS, A PAIR OF RESISTOR MEANS IN SAID CONDUCTOR MEANS, A PAIR OF SWITCHES, AND MEANS CONNECTING SAID SWITCHES EACH TO BY-PASS ONE OF SAID RESISTOR MEANS WHEREBY CLOSING OF BOTH OF SAID SWITCHES WILL BY-PASS BOTH OF SAID RESISTOR MEANS TO PASS ELECTRIC CURRENT TO SAID WINDING MEANS SUFFICIENT TO INITIATE OPERATION OF SAID SOLENOID AND THEREAFTER ONLY ONE OF SAID SWITCHES NEED BE MAINTAINED CLOSED TO PASS SUFFICIENT CURRENT TO SAID WINDING MEANS TO MAINTAIN SAID SOLENOID IN OPERATION.
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) | 1966-03-04 | 1966-09-03 | 1967-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-04 | 1970-09-03 | 1971-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-04 | 1974-09-03 | 1975-03-05 | $7700.00 | Window Closed / Lapsed |