US3618409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety switch
Assignee: Emerson Electric Co
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Filing: 1969-09-30
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Granted: 1971-11-09
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Expires: 1989-09-30
Abstract
Abstract IN A STANDARD ROCKER TYPE "ON-OFF" SWITCH, A SWITCH LEVER IS PROVIDED WHICH IS ASYMMETRICAL WITH RESPECT TO THE PIVOT AXIS, WITH AN ACCESSIBLE PROJECTION IN THE DIRECTION OF THE "OFF" POSITION GREATER THAN IN THE DIRECTION OF THE "ON" POSITION WITH RESPECT TO THE PIVOT AXIS, SO THAT THE SWITCH IS MOST READILY MOVED TO THE "ON" POSITION BY GRASPING SIDES AND LIFTING UP OF THE PROJECTION OF THE LEVER IN THE "OFF" DIRECTION, A RELATIVELY DIFFICULT MANIPULATION, AND IS READILY MOVED TO THE "OFF" POSITION BY PRESSURE AGAINST THE LEVER.
Inventors
- 👤 Ralph W Shifley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:45
CPC Classifications
F; F16; F16H; F16H35/00; F16H35/14; G; G05; G05G; G05G7/00; G05G7/02; G05G2700/00; G05G2700/12; G05G2700/18; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/1892
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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |