US3188406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple plunger electrical switch for sequential contact operation and dynamic braking
Assignee: Ward Leonard Electric Co
•
Filing: 1961-01-05
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Granted: 1965-06-08
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Expires: 1981-01-05
Abstract
No abstract record available.
Inventors
- 👤 Scribner Arthur Clayton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:45
CPC Classifications
H; H01; H01H; H01H36/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
232 words
IN A ELECTRICAL SWITCH; FIXED MAIN CONTACTS, A MAIN CONTACT CARRIER RECIPROCALLY MOUNTED TO MOVE ALONG A LINE OF MOVEMENT IN AND OUT OF ENGAGING POSITION WITH SAID MAIN CONTACTS, RESILIENT MEANS ENGAGING SAID CARRIER FOR URGING SAID CARRIER OUT OF ENGAGING POSITION, A FIRST AND SECOND PAIR OF FIXED AUXILIARY CONTACCTS SPACED ALONG THE LINE OF MOVEMENT OF SAID CONTACT CARRIER, A CONTACT PLUNGER RECIPROCALLY MOUNTED ON SAID MAIN CONTACT CARRIER TO MOVE IN THE DIRECTION OF SAIF CONTACT CARRIER TO ENGAGE THE FIRST PAIR OF AUXILIARY CONTACTS ON MOVEMENT IN MAIN CONTACT ENGAGEMENT AND TO ENGAGE THE SECOND PAIR OF AUXILIARY CONTACTS ON MOVEMENT FROM THE MAIN CONTACT ENGAGEMENT, RESILIENT MEANS MOUNTED BETWEEN SAID PLUNGER AND CARRIER FOR URGING SAID PLUNGER OUT OF ENGAGING POSITION WITH SAID FIRST PAIR AND SAID MAIN CARRIER, SAID PLUNGER BEING NORMALLY SPACED FROM SAID MAIN CARRIER ALONG THE LINE OF MOVEMENT TO PROVIDE AN INITIAL LEADING ADVANCE INTO AUXILIARY CONTACT ENGAGING POSITION OF SAID PLUNGER OVER MAIN CONTACT ENGAGING POSITION RIER, AND SAID PLUNGER RESILIENT MEANS RETURNING SAID PLUNGER TO A POSITION OUT OF CONTACT ON MAINTAINED ENGAGEPAIRS OF SAID AUXILIARY CONTACTS ON MAINTAINING ENGAGEMENT OF SAID AUXIARY CONTACT CARRIER AND ON DISENGAGEMENT OF SAID CONTACT CARRIER FROM THE ENGAGING POSITION SAID MAIN RESILIENT MEANS FORCING SAID PLUNGER IN COOPERATION WITH SAID PLUNGER RESILIENT MEANS INTO ENGAGEMENT WITH THE SECOND PAIR OF AUXILIARY CONTACTS.
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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) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |