US3612836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital end speed indicator
Assignee: United States Department of the Navy
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Filing: 1970-02-24
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Granted: 1971-10-12
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Expires: 1990-02-24
Abstract
Abstract An aircraft catapult launch monitoring system that combines the functions of digitally determining the end speed of the aircraft, determining catapult accumulator pressure and valve opening time and distance. The accumulator pressure is measured by a digital pressure transducer. Valve-opening time is measured by a device that determines the time an angle encoder takes to register the count analogous to the distance opened. Valve-opening length is measured by counting the pulses generated by the angle encoder and translating them to an analogous length.
Inventors
- 👤 Robert J Jordan
- 👤 William P Russell
- 👤 Robert R Shatzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:04
CPC Classifications
G; G04; G04F; G04F10/00; G04F10/04; H; H03; H03M; H03M1/00; H03M1/12; H03M1/22; H03M1/24; H03M1/28; H03M1/30
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
170 words
A system for measuring and computing catapult end speed, measuring catapult accumulator pressure, and measuring catapult valve opening time and distance comprising: an end speed sensor; and a pressure sensor; and a valve opening time and distance sensor; and an end speed measuring and computing means responsive to signals received from said end speed sensor to measure and compute catapult end speed; and a pressure-measuring means responsive to signals received from said pressure sensor to measure accumulator pressure; and a valve opening time and distance measuring means responsive to said valve opening time and distance sensor to measure catapult valve opening time and distance; and an indicating means responsive to said end speed measuring and computing means, said pressure-measuring means and said valve opening time and distance measuring means to indicate the degree of the respective received signal; and a control and synchronizing means for regulating the sequence of operation of said end speed measuring and computing means said pressure-measuring means, and said valve opening time and distance measuring means.
Claim 2
Independent Claim
170 words
A system for measuring and computing catapult end speed, measuring catapult accumulator pressure, and measuring catapult valve opening time and distance comprising: an end speed sensor; and a pressure sensor; and a valve opening time and distance sensor; and an end speed measuring and computing means responsive to signals received from said end speed sensor to measure and compute catapult end speed; and a pressure-measuring means responsive to signals received from said pressure sensor to measure accumulator pressure; and a valve opening time and distance measuring means responsive to said valve opening time and distance sensor to measure catapult valve opening time and distance; and an indicating means responsive to said end speed measuring and computing means, said pressure-measuring means and said valve opening time and distance measuring means to indicate the degree of the respective received signal; and a control and synchronizing means for regulating the sequence of operation of said end speed measuring and computing means said pressure-measuring means, and said valve opening time and distance measuring means.
Claim 3
Dependent Claim
31 words
The system of claim 1 wherein said pressure sensor comprises a pressure transducer which produces at its output, a pulse train proportional in frequency to the pressure applied at its input.
Claim 4
Dependent Claim
77 words
The system of claim 2 wherein said pressure-measuring means comprises: a gate, responsive to said pressure transducer, held open for a predetermined time interval so that the pulses passed through said gate equal in quantity the number of lbs./in.2 applied to said transducer; and a couNter means, responsive to said gate passing pulses, for counting the pulses passed through said gate; whereby the number of pulses counted represent the number of lbs./in.2 that said pressure sensor detected.
Claim 5
Dependent Claim
46 words
The system of claim 3 wherein said control and synchronizing means controls the time interval that said gate is held open, instructs said counter to transmit its accumulated pulses, and instructs said indicating means to indicate a pressure in response to pulses received from said counter.
Claim 6
Dependent Claim
17 words
The system of claim 1 wherein said valve opening time and distance sensor comprises a disc encoder.
Claim 7
Dependent Claim
143 words
The system of claim 5 wherein said valve opening time and distance measuring means comprises: a direction-sensing gate responsive to pulses received from said disc encoder which passes pulses caused by valve opening and inhibits pulse caused by valve closing; and a rate of turn counter responsive to pulses received from said direction sensing gate for generating an off signal whenever the pulse rate received from said gate is below a level predetermined to be indicative of no valve movement; and a switch means having an on and off state responsive to the off signal generated by said rate of turn counter; and a counter means connected to said switch means and responsive to pulses received from said disc encoder through said switch means when said switch is in its on state, to count pulses indicative of a valve opening time and distance.
Claim 8
Dependent Claim
65 words
The system of claim 6 wherein said counter means comprises first and second counter means, said first and second counter means responsive to pulses received from said encoder, said first counter means counting pulses that represent the length of time taken for a valve to open, and said second counter means counting pulses that represent the distance travelled by a valve while it was opening.
Claim 9
Dependent Claim
42 words
The system of claim 7 wherein said control and synchronizing means instructs said first counter means to transmit its accumulated pulses and instructs said indicating means to indicate a valve opening time in response to pulses received from said first counter means.
Claim 10
Dependent Claim
41 words
The system of claim 7 wherein said control and synchronizing means instructs said second counter means to transmit its accumulated pulses and instructs said indicating means to indicate a valve opening distance in response to pulses received from said counter means.
Claim 11
Dependent Claim
58 words
The system of claim 7 wherein said control and synchronizing means instructs said first and second counter means to transmit its accumulated pulses and instructs said indicating means to indicate a valve-opening time in response to pulses received from said first counter means and indicate a valve-opening distance in response to pulses received from said second counter means.
References Cited (Backward Citations)
US3348559A
Cited
US3497683A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |