US3603334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidic systems
Assignee: Plessey Overseas Ltd
•
Filing: 1970-03-25
•
Granted: 1971-09-07
•
Expires: 1990-03-25
Abstract
Abstract The invention relates to fluidic amplifiers and in particular to a system which improves the efficiency of the amplifier when operating at high pressures. The system includes a proportional amplifier which provides from one of its output legs, fluid to the supply control jet of a planar jet amplifier. The other output leg of the proportional amplifier feeds a vortex amplifier which in turn can vary the vent pressure of the planar jet amplifier. Therefore the pressure at the vent output is varied automatically as a function of the pressure at the control jet input and the supply jet input of the jet collector amplifier in a sense such as to extend the effective range of operation of the amplifier.
Inventors
- 👤 Guy E Davies
- 👤 Christopher G S Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:27
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/14; F15C1/146; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2087; Y10T137/2098; Y10T137/212; Y10T137/2125; Y10T137/2142
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
136 words
In a fluidic system, a vented amplifier having a control jet input, a supply jet input, a collector output and a vent output, a proportional amplifier having control jet input means, a supply jet, two output legs and a vent output, a vortex amplifier having a supply jet input and a control jet input, means connecting the two output legs of the proportional amplifier respectively to the control jet inputs of the vortex and vented amplifiers, and means connecting the two vent outputs to the supply jet input of the vortex amplifier whereby when fluid is supplied under pressure to the supply jet inputs of the vented and proportional amplifiers the fluid pressure at the two vent outputs is varied so as to augment any increase in pressure from the collector output of the vented amplifier.
Claim 2
Dependent Claim
136 words
In a fluidic system, a vented amplifier having a control jet input, a supply jet input, a collector output and a vent output, a proportional amplifier having control jet input means, a supply jet, two output legs and a vent output, a vortex amplifier having a supply jet input and a control jet input, means connecting the two output legs of the proportional amplifier respectively to the control jet inputs of the vortex and vented amplifiers, and means connecting the two vent outputs to the supply jet input of the vortex amplifier whereby when fluid is supplied under pressure to the supply jet inputs of the vented and proportional amplifiers the fluid pressure at the two vent outputs is varied so as to augment any increase in pressure from the collector output of the vented amplifier.
Claim 3
Dependent Claim
110 words
In a fluidic system, a vented amplifier having a control jet input, a supply jet input, a collector output and a vent output, variable resistance means connected to the vent output of the vented amplifier for varying the resistance to fluid flow from the output vent, control means connected to said control jet input to vary the pressure difference between the supply jet input and the collector output, and means connecting the control means to said resistance means to vary said resistance means in such a way as to augment any increase in pressure at the collector output resulting from a change in fluid pressure at the control jet input.
Claim 4
Dependent Claim
110 words
In a fluidic system, a vented amplifier having a control jet input, a supply jet input, a collector output and a vent output, variable resistance means connected to the vent output of the vented amplifier for varying the resistance to fluid flow from the output vent, control means connected to said control jet input to vary the pressure difference between the supply jet input and the collector output, and means connecting the control means to said resistance means to vary said resistance means in such a way as to augment any increase in pressure at the collector output resulting from a change in fluid pressure at the control jet input.
Claim 5
Dependent Claim
49 words
A system according to claim 2, wherein the control means comprises a proportional amplifier having two output legs and a supply jet input, and means connecting one output leg to control the variable resistance means and the other output leg to the control jet input of the vented amplifier.
Claim 6
Dependent Claim
39 words
A system according to claim 3, wherein the proportional amplifier includes a vent output and means connecting the vent output to said resistance means so that fluid flow from the vent output is also controlled by said resistance means.
Claim 7
Dependent Claim
65 words
A system according to claim 3, wherein the variable resistance means comprises a vortex amplifier having a supply jet input, a control jet input, means connecting the vent outputs of the proportional and vented amplifiers to the supply jet input of the vortex amplifier and means connecting the said other output leg of the proportional amplifier to the control jet input of the vortex amplifier.
Claim 8
Dependent Claim
36 words
A system according to claim 2, wherein the vented amplifier includes a further output arranged to receive a proportion of the fluid flow through the vented amplifier when fluid is supplied to the control jet input.
Claim 9
Dependent Claim
109 words
A system according to claim 6, wherein the variable resistance means includes a first vortex amplifier having a supply jet input and a control jet input, means connecting the control jet input to said other output leg of the proportional amplifier and the supply jet input to the output vent of the vented amplifier, a second vortex amplifier having a supply jet input, a control jet input and in output, means connecting the supply jet input to the vent output of the proportional amplifier, the control jet input to the further output of the vented amplifier, and the output to the supply jet input of the first vortex amplifier.
References Cited (Backward Citations)
US3410291A
Cited
US3468340A
Cited
US3417772A
Cited
US3473545A
Cited
US3468326A
Cited
US3515158A
Cited
US3537466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |