Patent US3264459A successfully refreshed from Google Patents.
US3264459A
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Analog computers for forming the integral of one variable with respect to another variable
Assignee: Westinghouse Air Brake Co
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Filing: 1963-05-02
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Granted: 1966-08-02
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Expires: 1983-05-02
Abstract
No abstract record available.
Inventors
- 👤 John W Ericson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:29
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/16; G06G7/161; G06G7/18; G06G7/1806; G06G7/184; G06G7/186
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
IN AN INTEGRATOR, IN COMBINATION, DIFFERENTIATING MEANS CONTROLLED BY A FIRST SIGNAL TO PRODUCE A SECOND SIGNAL IN ACCORDANCE WITH THE TIME RATE OF CHANGE OF SAID FIRST SIGNAL, MEANS FOR GENERATING A LINEAR TRIANGULAR SIGNAL, TRIGGERING MEANS CONTROLLED BY SAID SECOND SIGNAL AND SAID LINEAR TRIANGULAR SIGNAL FOR PRODUCING A TRIGGER PULSE DURING THE TIME SAID LINEAR TRIANGULAR PULSE EXCEEDS SAID SECOND SIGNAL, GATE MEANS CONTROLLED BY SAID TRIGGER PULSE TO PERMIT THE PASSAGE OF A THIRD SIGNAL DURING THE
Claim 2
Dependent Claim
81 words
IN AN INTEGRATOR, IN COMBINATION, DIFFERENTIATING MEANS CONTROLLED BY A FIRST SIGNAL TO PRODUCE A SECOND SIGNAL IN ACCORDANCE WITH THE TIME RATE OF CHANGE OF SAID FIRST SIGNAL, MEANS FOR GENERATING A LINEAR TRIANGULAR SIGNAL, TRIGGERING MEANS CONTROLLED BY SAID SECOND SIGNAL AND SAID LINEAR TRIANGULAR SIGNAL FOR PRODUCING A TRIGGER PULSE DURING THE TIME SAID LINEAR TRIANGULAR PULSE EXCEEDS SAID SECOND SIGNAL, GATE MEANS CONTROLLED BY SAID TRIGGER PULSE TO PERMIT THE PASSAGE OF A THIRD SIGNAL DURING THE
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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |