Patent US3139613A successfully refreshed from Google Patents.
US3139613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft encoder apparatus
Assignee: Bendix Corp
•
Filing: 1960-02-16
•
Granted: 1964-06-30
•
Expires: 1980-02-16
Abstract
No abstract record available.
Inventors
- 👤 Negri Fred P De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:40
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/12; H03M1/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
APPARATUS FOR DETERMINING THE ANGLE OF ROTATION OF AN ELEMENT IN ACCORDANCE WITH A FUNCTION OF A VARIABLE WHICH BOTH INCREASES AND DECREASES AS THE ELEMENT ROTATES IN ONE DIRECTION, COMPRISING MEANS FOR PRODUCING A NUMBER OF PULSES IN ACCORDANCE WITH SAID FUNCTION AND RELATED TO SAID ANGLE OF ROTATION OF SAID ELEMENT, REVERSIBLE COUNTING MEANS FOR COUNTING SAID PULSES, AND MEANS FOR REVERSING SAID COUNTING MEANS WHEN THE VARIABLE CHANGES FROM AN INCREASING TO A DECREASING VALUE AND FROM A DECREASING TO AN INCREASING VALUE.
Claim 2
Dependent Claim
86 words
APPARATUS FOR DETERMINING THE ANGLE OF ROTATION OF AN ELEMENT IN ACCORDANCE WITH A FUNCTION OF A VARIABLE WHICH BOTH INCREASES AND DECREASES AS THE ELEMENT ROTATES IN ONE DIRECTION, COMPRISING MEANS FOR PRODUCING A NUMBER OF PULSES IN ACCORDANCE WITH SAID FUNCTION AND RELATED TO SAID ANGLE OF ROTATION OF SAID ELEMENT, REVERSIBLE COUNTING MEANS FOR COUNTING SAID PULSES, AND MEANS FOR REVERSING SAID COUNTING MEANS WHEN THE VARIABLE CHANGES FROM AN INCREASING TO A DECREASING VALUE AND FROM A DECREASING TO AN INCREASING VALUE.
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) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |