US3598137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidic amplifier
Assignee: HM Hobson Ltd
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Filing: 1969-11-12
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Granted: 1971-08-10
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Expires: 1989-11-12
Abstract
Abstract A fluidic amplifier comprising an amplifying section including a pair of probe-type fluidic vortex valves connected in push pull and sharing a common source of supply pressure, a comparing section including a pair of fluidic vortex valves, sharing a common source of supply pressure and connected in push pull with cross-connected control inlets, one having another control inlet subject to an input signal pressure to be multiplied and the other having another control inlet connected to receive a feedback signal from the amplifying section through a tapping from a fluid pressure potentiometer which provides for division of the pressure in said probe by the multiplying factor desired, and means for applying across the control inlets to the valves in the amplifying section the pressure difference established in the supply lines to the valves in the comparing section.
Inventors
- 👤 Stanley George Glaze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:41
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/16; F15B; F15B21/00; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2087; Y10T137/2093; Y10T137/2098
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
135 words
A fluidic amplifier comprising an amplifying section including a pair of probe-type fluidic vortex valves connected in push-pull and sharing a common source of supply pressure, a comparing section including a pair of fluidic vortex valves, sharing a common source of supply pressure and connected in pushpull with cross-connected control inlets, one having another control inlet subject to an input signal pressure to be multiplied and the other having another control inlet connected to receive a feedback signal from the amplifying section through a tapping from a fluid pressure potentiometer which provides for division of the pressure in said probe by the multiplying factor desired, and means for applying across the control inlets to the valves in the amplifying section the pressure difference established in the supply lines to the valves in the comparing section.
Claim 2
Dependent Claim
135 words
A fluidic amplifier comprising an amplifying section including a pair of probe-type fluidic vortex valves connected in push-pull and sharing a common source of supply pressure, a comparing section including a pair of fluidic vortex valves, sharing a common source of supply pressure and connected in pushpull with cross-connected control inlets, one having another control inlet subject to an input signal pressure to be multiplied and the other having another control inlet connected to receive a feedback signal from the amplifying section through a tapping from a fluid pressure potentiometer which provides for division of the pressure in said probe by the multiplying factor desired, and means for applying across the control inlets to the valves in the amplifying section the pressure difference established in the supply lines to the valves in the comparing section.
Claim 3
Dependent Claim
52 words
An amplifier as claimed in claim 1 in which the amplifying section includes a second pair of probe-type fluidic vortex valves, also connected in push-pull, having their control inlets connected to the comparing section and their probes connected to the control inlets of the pair of valves which provide the feedback signal.
Claim 4
Dependent Claim
77 words
An amplifier as claimed in claim 1, in which the inlets of the vortex valves in the comparing section are connected to the outlets of another pair of vortex valves having their supply inlets and also their control inlets subject to the common supply pressure the connections to the control inlets of the valves in the amplifying section being taken from points upstream of the supply inlets to said other pair of valves in the comparing section.
Claim 5
Dependent Claim
27 words
A pneumatic amplifier as claimed in claim 3, having capacitive storage spaces connected to the supply inlets to the other pair of valves in the comparing section.
References Cited (Backward Citations)
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US3410291A
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US3426534A
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US3517559A
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US3489009A
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US3515158A
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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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |