US3926221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminar fluidic multiplier
Assignee: United States Department of the Army
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Filing: 1974-08-14
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Granted: 1975-12-16
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Expires: 1994-08-14
Abstract
Abstract A fluidic multiplier which comprises a proportional fluidic amplifier operated in the laminar region. The gain of the amplifier is proportional to the power jet pressure, thereby providing an output signal which is the product of the input signal and the supply pressure. A preconditioning and buffering circuit is also disclosed for linearizing and isolating the multiplier from other circuitry.
Inventors
- 👤 Robert L Woods
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:43
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/14; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/212; Y10T137/2125; Y10T137/2147; Y10T137/2229
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
91 words
A fluidic multiplier circuit, which comprises: a proportional fluidic amplifier operated in the laminar region having a supply pressure input and a pair of signal inputs and a pair of outputs; a biased fluid amplifier having a supply pressure, an output and a single-sided transfer characteristic, said output connected to said supply pressure input of said proportional fluidic amplifier; and a preconditioning fluid amplifier having a supply pressure equal to that of said biased fluid amplifier and an output connected to said pair of signal inputs of said proportional fluidic amplifier.
Claim 2
Dependent Claim
91 words
A fluidic multiplier circuit, which comprises: a proportional fluidic amplifier operated in the laminar region having a supply pressure input and a pair of signal inputs and a pair of outputs; a biased fluid amplifier having a supply pressure, an output and a single-sided transfer characteristic, said output connected to said supply pressure input of said proportional fluidic amplifier; and a preconditioning fluid amplifier having a supply pressure equal to that of said biased fluid amplifier and an output connected to said pair of signal inputs of said proportional fluidic amplifier.
Claim 3
Dependent Claim
42 words
The fluidic multiplier circuit accordinG to claim 1, further comprising a buffer amplifier having a pair of inputs connected to said pair of outputs of said proportional fluidic amplifier, said buffer amplifier including means for providing a constant mean output level therefrom.
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) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |