US3217121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acceleration switch
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1962-08-27
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Granted: 1965-11-09
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Expires: 1982-08-27
Abstract
No abstract record available.
Inventors
- 👤 Richard W Hradek
- 👤 Donald E Rogness
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:35
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/02; G01P15/08; G01P15/135; H; H01; H01H; H01H35/00; H01H35/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A DUAL MASS ACCELERATION RESPONSIVE SWITCH FOR ACTIVATION ABOVE A PREDETERMINED MINIMUM VALUE OF ACCELERATION COMPRISING A SEISMIC MASS MOVABLE ALONG THE SENSITIVE AXIS OF SAID SWITCH TOWARD A SWITCHING POSITION, COMPRESSION SPRING MEANS HAVING A PREDETERMINED RESTRAINING FORCE FOR BIASING SAID SEISMIC MASS TOWARD A REFERENCE POSITION, A TIMING MEMBER MOVABLE ALONG THE SENSITIVE AXIS OF SAID SWITCH TOWARD A SWITCHING POSITION, A TENSION SPRING MEANS FOR BIASING SAID TIMING MEMBER TOWARD SAID SEISMIC MASS,
Claim 2
Dependent Claim
76 words
A DUAL MASS ACCELERATION RESPONSIVE SWITCH FOR ACTIVATION ABOVE A PREDETERMINED MINIMUM VALUE OF ACCELERATION COMPRISING A SEISMIC MASS MOVABLE ALONG THE SENSITIVE AXIS OF SAID SWITCH TOWARD A SWITCHING POSITION, COMPRESSION SPRING MEANS HAVING A PREDETERMINED RESTRAINING FORCE FOR BIASING SAID SEISMIC MASS TOWARD A REFERENCE POSITION, A TIMING MEMBER MOVABLE ALONG THE SENSITIVE AXIS OF SAID SWITCH TOWARD A SWITCHING POSITION, A TENSION SPRING MEANS FOR BIASING SAID TIMING MEMBER TOWARD SAID SEISMIC MASS,
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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |