Patent US648564A successfully refreshed from Google Patents.
US3584635A
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Settable fluidic counter
Assignee: United States Department of the Army
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Filing: 1969-04-07
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Granted: 1971-06-15
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Expires: 1989-04-07
Abstract
Abstract A settable fluidic binary counter stage which includes a pair of pure fluidic amplifiers. The outputs of the first fluidic amplifier are fed back with resistors in the path thereof to the control inputs of the second fluidic amplifier. The outputs of the second fluidic amplifier are connected to the control inputs of the first fluidic amplifier in such a manner as to form a control loop. If a set pulse is applied to one of the control inputs of the second fluidic amplifier and then removed, the counter stage will be stably set in its desired mode of operation and ready to count upon the receipt of a count pulse. Any number of such counter stages may be cascaded and randomly set to a desired condition and the stages thereof will retain such a state after the setting pulses are removed, despite the order of their removal.
Inventors
- 👤 Raymond W Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:29
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/08; F15C1/10; F15C1/12; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/212; Y10T137/2125; Y10T137/2131; Y10T137/2136; Y10T137/2147; Y10T137/2153; Y10T137/2158
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
186 words
A settable fluidic counter comprising: a first pure fluid amplifier and a second pure fluid amplifier, each of said amplifiers including a first control input, a second control input, a power input, a first output and a second output; means connecting said first and said second outputs of said second amplifier respectively to said first and said second control inputs of said first amplifier such that a control loop is formed; first and second means connected to said first and second control inputs of said second amplifier for applying set pulses to said settable fluidic counter; and means for providing feedback paths from the first and second outputs of said first amplifier respectively to said first and second control inputs of said second amplifier such that when a set pulse is applied to one of said means connected to said first and second control inputs of said second amplifier and then removed therefrom flow will aspirate in such a manner that the first amplifier output will remain in a set condition and be prepared to change its mode of operation upon receipt of a count pulse.
Claim 2
Dependent Claim
186 words
A settable fluidic counter comprising: a first pure fluid amplifier and a second pure fluid amplifier, each of said amplifiers including a first control input, a second control input, a power input, a first output and a second output; means connecting said first and said second outputs of said second amplifier respectively to said first and said second control inputs of said first amplifier such that a control loop is formed; first and second means connected to said first and second control inputs of said second amplifier for applying set pulses to said settable fluidic counter; and means for providing feedback paths from the first and second outputs of said first amplifier respectively to said first and second control inputs of said second amplifier such that when a set pulse is applied to one of said means connected to said first and second control inputs of said second amplifier and then removed therefrom flow will aspirate in such a manner that the first amplifier output will remain in a set condition and be prepared to change its mode of operation upon receipt of a count pulse.
Claim 3
Dependent Claim
51 words
A settable fluidic counter as in claim 1 wherein a pulse entering said power input of said second amplifier will join an existing setting pulse such as to continue to influence the flow of the power jet of said first amplifier in the direction it would flow without said entering pulse.
Claim 4
Dependent Claim
25 words
A settable fluidic counter as in claim 1 wherein said count pulse is applied to the power jet input of said second pure fluid amplifier.
Claim 5
Dependent Claim
47 words
In combination, a plurality of settable fluidic counter stages as defined in claim 1 wherein each of said counter stages may be randomly set and when the setting pulses are removed therefrom in any order said counter stages will remain stably set with the desired number therein.
Claim 6
Dependent Claim
52 words
A settable fluidic counter as in claim 1 wherein means are provided for venting all of the flow in the proper feedback path when a respective setting pulse is removed such that flow on the side of said control loop nearest said feedback paTh is aspirated and thereby lowers the pressure thereof.
Claim 7
Dependent Claim
38 words
A settable fluidic counter as in claim 5 wherein said power input of said first fluid amplifier will also aspirate flow on the side of said control loop nearest said feedback path and thus lower the pressure thereof.
Claim 8
Dependent Claim
28 words
A settable fluidic counter as in claim 6 wherein said first pure fluid amplifier is provided with venting means for exiting excessive flow from said power jet thereof.
Claim 9
Dependent Claim
30 words
A settable fluidic counter as in claim 6 wherein resistance means is provided in each of said feedback paths for preventing both instability and oscillation of said settable fluidic counter.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |