Patent US3131603A successfully refreshed from Google Patents.
US3131603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servomotor systems
Assignee: Sperry Gyroscope Co Ltd
•
Filing: 1962-02-21
•
Granted: 1964-05-05
•
Expires: 1982-02-21
Abstract
No abstract record available.
Inventors
- 👤 Hadekel Ruben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:46
CPC Classifications
F; F15; F15B; F15B20/00; F15B20/004; B; B64; B64C; B64C13/00; B64C13/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
A SERVOMOTOR SYSTEM OF THE CHARACTER DESCRIBED INCLUDING A FIXED FRAME, A PAIR OF COOPERATING PRESSURE JACKS HAVING AXIALLY SPACED CYLINDERS FIXEDLY MOUNTED ON THE FRAME AND RESPECTIVE OPPOSITELY ARRANGED PISTONS WITH EFFECTIVE AND INEFFECTIVE MODES OF OPERATION, A LOAD MEMBER MOVABLY MOUNTED ON THE FRAME BETWEEN THE PISTONS; ALTERNATIVE MEANS PROVIDING THE OPERATIONAL MODE OF THE PISTONS INCLUDING MECHANICAL MEANS FOR CONNECTING THE LOAD MEMBER TO THE PISTONS IN THEIR EFFECTIVE MODE OF OPERATION HAVING A FIRST PART OF FIXED LENGTH BETWEEN THE MEMBER AND ONE OF THE PISTONS AND A SECOND PART OF A LENGTH EQUAL TO THE LENGTH OF THE FIRST PART BETWEEN THE MEMBER AND THE OTHER OF THE PISTONS, AND MEANS FOR BIASING THE PISTONS IN THEIR INEFFECTIVE MODE OF OPERATION; AND CHANGEOVER MEANS OPERABLE TO OVERCOME THE BIAS OF THE BIASING MEANS AND PROVIDE A DIFFERENTIAL PRESSURE INPUT TO THE CYLINDERS OF THE JACKS TO MOVE THE MEMBER THROUGH THE CONNECTING MECHANICAL MEANS AND PISTONS.
Claim 2
Dependent Claim
161 words
A SERVOMOTOR SYSTEM OF THE CHARACTER DESCRIBED INCLUDING A FIXED FRAME, A PAIR OF COOPERATING PRESSURE JACKS HAVING AXIALLY SPACED CYLINDERS FIXEDLY MOUNTED ON THE FRAME AND RESPECTIVE OPPOSITELY ARRANGED PISTONS WITH EFFECTIVE AND INEFFECTIVE MODES OF OPERATION, A LOAD MEMBER MOVABLY MOUNTED ON THE FRAME BETWEEN THE PISTONS; ALTERNATIVE MEANS PROVIDING THE OPERATIONAL MODE OF THE PISTONS INCLUDING MECHANICAL MEANS FOR CONNECTING THE LOAD MEMBER TO THE PISTONS IN THEIR EFFECTIVE MODE OF OPERATION HAVING A FIRST PART OF FIXED LENGTH BETWEEN THE MEMBER AND ONE OF THE PISTONS AND A SECOND PART OF A LENGTH EQUAL TO THE LENGTH OF THE FIRST PART BETWEEN THE MEMBER AND THE OTHER OF THE PISTONS, AND MEANS FOR BIASING THE PISTONS IN THEIR INEFFECTIVE MODE OF OPERATION; AND CHANGEOVER MEANS OPERABLE TO OVERCOME THE BIAS OF THE BIASING MEANS AND PROVIDE A DIFFERENTIAL PRESSURE INPUT TO THE CYLINDERS OF THE JACKS TO MOVE THE MEMBER THROUGH THE CONNECTING MECHANICAL MEANS AND PISTONS.
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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |