US3971396A
Expired / Lapsed
US
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Pneumatic relay
Assignee: Honeywell Inc
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Filing: 1975-07-16
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Granted: 1976-07-27
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Expires: 1995-07-16
Abstract
Abstract A pneumatic apparatus or relay which, in one embodiment, maintains the output pressure at a fixed level until the signal pressure obtains a predetermined value at which time the output pressure varies according to the signal pressure and, in a second embodiment, maintains the output pressure at a first level, which may be essentially zero, until the signal pressure obtains a predetermined value at which time the output pressure assumes a second level until the signal pressure reaches a second predetermined value and then the output pressure varies according to the signal pressure.
Inventors
- 👤 Louis J. Bentsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:33
CPC Classifications
G; G05; G05B; G05B11/00; G05B11/44; G05B11/48; G05B11/52; F; F24; F24F; F24F11/00; F24F11/70; F24F11/72; F24F11/74; F24F11/76; F24F11/89; Y; Y10; Y10T; Y10T137/00; Y10T137/2278
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
189 words
A pneumatic relay comprising: terminal means adapted to be connected to a source of pressure; first housing means divided by a diaphragm into a control chamber and a flow chamber and having a nozzle in said flow chamber; first means connecting said terminal means to said flow chamber for supplying pressure to said flow chamber; output means connected to said first means for providing an output pressure dependent upon said pressure within said flow chamber; biasing means within said first housing means acting against said diaphragm for establishing a minimum predetermined value for said pressure within said flow chamber; and, second means including condition responsive means connected to said nozzle, said condition responsive means applying a signal pressure to said flow chamber and having sufficient capacity to bleed off said pressure supplied by said first means above said predetermined value until said signal pressure achieves a value substantially equal to said predetermined value whereby said output pressure will be substantially equal to said predetermined value until said signal pressure attains said value substantially equal to said predetermined value at which time said output pressure will follow said signal pressure.
Claim 2
Dependent Claim
189 words
A pneumatic relay comprising: terminal means adapted to be connected to a source of pressure; first housing means divided by a diaphragm into a control chamber and a flow chamber and having a nozzle in said flow chamber; first means connecting said terminal means to said flow chamber for supplying pressure to said flow chamber; output means connected to said first means for providing an output pressure dependent upon said pressure within said flow chamber; biasing means within said first housing means acting against said diaphragm for establishing a minimum predetermined value for said pressure within said flow chamber; and, second means including condition responsive means connected to said nozzle, said condition responsive means applying a signal pressure to said flow chamber and having sufficient capacity to bleed off said pressure supplied by said first means above said predetermined value until said signal pressure achieves a value substantially equal to said predetermined value whereby said output pressure will be substantially equal to said predetermined value until said signal pressure attains said value substantially equal to said predetermined value at which time said output pressure will follow said signal pressure.
Claim 3
Dependent Claim
21 words
The pneumatic relay of claim 1 wherein said second means includes further means for connecting said nozzle to said terminal means.
Claim 4
Dependent Claim
36 words
The pneumatic relay of claim 2 wherein said first and said further means each comprise a restriction and wherein said output means is connected to said first means downstream of said restriction of said first means.
Claim 5
Dependent Claim
136 words
The pneumatic relay of claim 3 further comprising: second housing means divided by a diaphragm into a flow chamber and a control chamber and having a nozzle in said flow chamber; third means connecting said control chamber of said second housing means to said second means; fourth means connecting said nozzle of said second housing to said first means downstream of said restriction for supplying pressure to said flow chamber of said second housing means; and, port means connected to said flow chamber of said second housing means for bleeding said pressure within said flow chamber of said second housing means until said signal pressure attains a predetermined level, whereby said second housing means provides hesitation maintaining said output pressure at a level below said predetermined value until said predetermined level of signal pressure is attained.
Claim 6
Dependent Claim
17 words
The pneumatic relay of claim 4 wherein said port means is an exhaust port connected to atmosphere.
Claim 7
Dependent Claim
54 words
The pneumatic relay of claim 5 wherein said condition responsive means comprises a thermostat having a thermostatic nozzle connected to said nozzle of said first housing means, a temperature responsive device for operation in conjunction with said thermostatic nozzle, and means for connecting said thermostatic nozzle to said further means downstream of said restriction.
Claim 8
Dependent Claim
52 words
The pneumatic relay of claim 3 wherein said condition responsive means comprises a thermostat having a thermostatic nozzle connected to said nozzle of said first housing means, a temperature responsive device for operating in conjunction with said nozzle and means for connecting said nozzle to said further means downstream of said restriction.
Claim 9
Independent Claim
190 words
An apparatus for providing a minimum output pressure comprising: terminal means adapted to be connected to a source of pressure; first valve means having a flow chamber, a nozzle within said flow chamber, and closing means for seating against said nozzle; first connecting means connecting said terminal means to said flow chamber for supplying pressure to said flow chamber; output means connected to said first connecting means for providing an output pressure dependent upon said pressure within said flow chamber; biasing means acting against said closing means for establishing a minimum predetermined value for said pressure within said flow chamber; and, condition responsive means connected to said nozzle for supplying a signal pressure to said flow chamber, said condition responsive means having means of sufficient capacity for bleeding off said pressure supplied by said first connecting means above said predetermined value until said signal pressure attains a value substantially equal to said predetermined value, whereby said output pressure will be substantially equal to said predetermined value until said signal pressure attains said value substantially equal to said predetermined value at which time said output pressure will follow said signal pressure.
Claim 10
Independent Claim
190 words
An apparatus for providing a minimum output pressure comprising: terminal means adapted to be connected to a source of pressure; first valve means having a flow chamber, a nozzle within said flow chamber, and closing means for seating against said nozzle; first connecting means connecting said terminal means to said flow chamber for supplying pressure to said flow chamber; output means connected to said first connecting means for providing an output pressure dependent upon said pressure within said flow chamber; biasing means acting against said closing means for establishing a minimum predetermined value for said pressure within said flow chamber; and, condition responsive means connected to said nozzle for supplying a signal pressure to said flow chamber, said condition responsive means having means of sufficient capacity for bleeding off said pressure supplied by said first connecting means above said predetermined value until said signal pressure attains a value substantially equal to said predetermined value, whereby said output pressure will be substantially equal to said predetermined value until said signal pressure attains said value substantially equal to said predetermined value at which time said output pressure will follow said signal pressure.
Claim 11
Dependent Claim
26 words
The apparatus of claim 8 wherein said condition responsive means includes further means for connecting said nozzle of said first valve means to said terminal means.
Claim 12
Dependent Claim
34 words
The apparatus of claim 9 wherein said first connecting means and said further means each comprises a restriction and wherein said output means is connected to said first connecting means downstream of said restriction.
Claim 13
Dependent Claim
143 words
The apparatus of claim 8 further comprising: second valve means having a flow chamber, a nozzzle within said flow chamber, and a closing means for seating against said nozzle; second connecting means for applying a force to said diaphragm of said second valve means dependent upon said signal pressure; third connecting means for connecting said nozzle of said second valve means to said first connecting means downstream of said restriction for supplying pressure to said flow chamber of said second valve means; and, port means connected to said flow chamber of said second valve means for bleeding said pressure within said flow chamber of said second valve means until said signal pressure attains a predetermined level, whereby said second valve means provides hesitation maintaining said output pressure at a level below said predetermined value until said predetermined level of signal pressure is attained.
Claim 14
Dependent Claim
16 words
The apparatus of claim 11 wherein said port means is an exhaust port connected to atmosphere.
Claim 15
Dependent Claim
58 words
The apparatus of claim 12 wherein said condition responsive means comprises a thermostat having a thermostatic nozzle connected to said nozzle of said first valve means, a temperature responsive element for operating in conjunction with said thermostatic nozzle and means for connecting said thermostatic nozzle to said terminal means and to said nozzle of said second valve means.
Claim 16
Dependent Claim
53 words
The apparatus of claim 10 wherein said condition responsive means comprises a thermostat having a thermostatic nozzle connected to said nozzle of said first valve means, a temperature responsive element for operating in conjunction with said thermostatic nozzle, and means for connecting said thermostatic nozzle to said further means downstream of said restriction.
References Cited (Backward Citations)
US3297044A
Cited
US3605781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-27 | 1980-01-26 | 1980-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-27 | 1984-01-26 | 1984-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-27 | 1988-01-26 | 1988-07-27 | $7700.00 | Window Closed / Lapsed |