Patent US3712965A successfully refreshed from Google Patents.
US3712965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switch operating mechanism for limit switches
Assignee: Westran Corp
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Filing: 1971-05-10
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Granted: 1973-01-23
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Expires: 1991-05-10
Abstract
Abstract D R A W I N G A MECHANISM FOR OPERATING A DRUM SWITCH WHICH INCLUDES A SWITCH ACTUATOR MOVABLE BETWEEN A FIRST AND A SECOND POSITION. A LIMIT ARM IS RIGIDLY MOUNTED AND ALIGNED WITH THE ACTUATOR. A LEVER IS PIVOTALLY MOUNTED ON A LIMIT ARM WITH A SPRING BASING MEANS FURTHER MOUNTED BETWEEN THE LIMIT ARM AND THE LEVER. THE LEVER IS PLACED INTO ABUTMENT WITH THE SWITCH ACTATOR RESPONSIVE TO MOVEMENT OF THE SWITCH TO PROVIDE A FIRST ENGAGEMENT BETWEEN THE ACUATOR AND THE LEVER TO DEPRESS THE BIASING MEANS AND SUBSEQUENTLY TO MOVE THE ACTUTATOR FROM ITS FIRST TO ITS SECOND POSITION BY THE LEVER RESPONSIVE TO THE RETURN OF THE BIASING MEANS TO ITS INITIAL CONDITION.
Inventors
- 👤 T Dalton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:38
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/02; H01H3/16; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18856
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |