Patent US3250133A successfully refreshed from Google Patents.
US3250133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential accelerometer
Assignee: Ambac International Corp
•
Filing: 1964-12-22
•
Granted: 1966-05-10
•
Expires: 1984-12-22
Abstract
No abstract record available.
Inventors
- 👤 Paul H Savet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:08
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/02; G01P15/08; G01P15/097; G01P15/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
111 words
A DIFFERENTIAL ACCELEROMETER INCLUDING A PAIR OF WEIGHTS, A FRAME, MEANS FOR SUPPORTING SAID WEIGHTS IN SAID FRAME TO PERMIT LIMITED LINEAR MOTION OF BOTH OF SAID WEIGHTS SIMULTANEOUSLY WITH RESPECT TO SAID FRAME IN RESPONSE TO ACCELERATION OF SAID FRAME, A FIRST ELASTIC MEMBER ATTACHED TO AND BETWEEN SAID WEIGHTS, A SECOND ELASTIC MEMBER CONNECTED BETWEEN SAID FRAME AND ONE OF SAID WEIGHTS, A THIRD ELASTIC MEMBER CONNECTED BETWEEN SAID FRAME AND THE OTHER OF SAID WEIGHTS, SAID ELASTIC MEMBERS BEING COAXIAL WITH EACH OTHER, MEANS, FOR DETECTING CHANGES IN TENSION IN SAID FIRST MEMBER, AND MEANS FOR DETERMINING THE DIFFERENTIAL ACCELERATION OF SAID WEIGHTS FROM SAID DETECTED TENSION CHANGES.
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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |