US3213376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital velocity meter
Assignee: General Precision Inc
•
Filing: 1962-07-09
•
Granted: 1965-10-19
•
Expires: 1982-07-09
Abstract
No abstract record available.
Inventors
- 👤 Hugh E Riordan
- 👤 William A Hendrieks
- 👤 Malone Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:19
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/02; G01P15/08; G01P7/00; H; H03; H03M; H03M1/00; H03M1/06; H03M1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A DIGITAL VELOCITY METER COMPRISING INTEGRATING MEANS HAVING FIRST AND SECOND INPUTS AND OPERABLE TO GENERATE AN OUTPUT SIGNAL REPRESENTING THE INTEGRAL OF THE DIFFERENCE BETWEEN THE SIGNALS APPLIED TO SAID FIRST AND SECOND INPUTS, MEANS TO APPLY A SIGNAL CONTINUOUSLY REPRESENTING ACCELERATION TO THE FIRST INPUT OF SAID INTEGRATING MEANS, MEANS TO GENERATE A TRAIN OF CONSTANT IMPULSE CONTENT PULSES, COMPARISON MEANS, INCLUDING A SOURCE OF REFERENCE POTENTIAL, RESPONSIVE TO THE OUTPUT SIGNAL OF SAID INTEGRATING MEANS TO GENERATE AN A.C. SIGNAL SHIFTED 90* IN PHASE FROM THE PHASE OF SAID TRAIN AND HAVING A POLARITY DEPENDING UPON WHETHER OR NOT THE OUTPUT SIGNAL OF SAID INTEGRATING MEANS IS ABOVE OR BELOW SAID REFERENCE POTENTIAL, AND SWITCHING MEANS RESPONSIVE TO THE POLARITY OF THE OUTPUT SIGNAL OF SAID COMPARISON MEANS TO SELECTIVELY APPLY SAID PULSE TRAIN TO THE SECOND INPUT OF SAID INTEGRATING MEANS.
Claim 2
Dependent Claim
145 words
A DIGITAL VELOCITY METER COMPRISING INTEGRATING MEANS HAVING FIRST AND SECOND INPUTS AND OPERABLE TO GENERATE AN OUTPUT SIGNAL REPRESENTING THE INTEGRAL OF THE DIFFERENCE BETWEEN THE SIGNALS APPLIED TO SAID FIRST AND SECOND INPUTS, MEANS TO APPLY A SIGNAL CONTINUOUSLY REPRESENTING ACCELERATION TO THE FIRST INPUT OF SAID INTEGRATING MEANS, MEANS TO GENERATE A TRAIN OF CONSTANT IMPULSE CONTENT PULSES, COMPARISON MEANS, INCLUDING A SOURCE OF REFERENCE POTENTIAL, RESPONSIVE TO THE OUTPUT SIGNAL OF SAID INTEGRATING MEANS TO GENERATE AN A.C. SIGNAL SHIFTED 90* IN PHASE FROM THE PHASE OF SAID TRAIN AND HAVING A POLARITY DEPENDING UPON WHETHER OR NOT THE OUTPUT SIGNAL OF SAID INTEGRATING MEANS IS ABOVE OR BELOW SAID REFERENCE POTENTIAL, AND SWITCHING MEANS RESPONSIVE TO THE POLARITY OF THE OUTPUT SIGNAL OF SAID COMPARISON MEANS TO SELECTIVELY APPLY SAID PULSE TRAIN TO THE SECOND INPUT OF SAID INTEGRATING MEANS.
References Cited (Backward Citations)
US2582596A
Cited
US2924723A
Cited
US2821639A
Cited
US2905888A
Cited
US3094629A
Cited
US3028550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |