US3638857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure discriminator
Assignee: Honeywell Inc
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Filing: 1970-05-06
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Granted: 1972-02-01
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Expires: 1990-05-06
Abstract
Abstract A pneumatic pressure responsive apparatus utilizing diaphragm logic which selects and transmits the lowest pressure of a plurality of input pressures.
Inventors
- 👤 Joseph E Hogel
- 👤 Donald H Spethmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:57
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/62; F24F11/70; F24F11/72; F24F11/80; F24F11/83; F24F11/84; F24F11/30; F24F3/00; F24F2003/003; F24F2003/005; F24F2003/006; F24F2110/00; F24F2110/10; F24F2110/20; F24F2221/00; F24F2221/54; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
146 words
Pressure responsive apparatus comprising: at least three diaphragm modules each comprising housing means, diaphragm means dividing the housing means into a control chamber and a flow chamber, partition means disposed within the flow chamber and arranged to sealably cooperate with the diaphragm means to further define a valving chamber; conduit means interconnecting each of the flow chambers of the diaphragm modules; inlet means including a restriction adapted to be connected to a source of regulated pressure and connected to the conduit means; outlet means connected to the inlet means downstream of the restriction; exhaust means connected to each of the valving chambers of the diaphragm modules; each of the control chambers of the diaphragm modules being adapted to receive an input pressure signal, the pressure responsive apparatus providing an output pressure signal at the outlet means substantially equal to the lowest of the input pressure signals.
Claim 2
Dependent Claim
146 words
Pressure responsive apparatus comprising: at least three diaphragm modules each comprising housing means, diaphragm means dividing the housing means into a control chamber and a flow chamber, partition means disposed within the flow chamber and arranged to sealably cooperate with the diaphragm means to further define a valving chamber; conduit means interconnecting each of the flow chambers of the diaphragm modules; inlet means including a restriction adapted to be connected to a source of regulated pressure and connected to the conduit means; outlet means connected to the inlet means downstream of the restriction; exhaust means connected to each of the valving chambers of the diaphragm modules; each of the control chambers of the diaphragm modules being adapted to receive an input pressure signal, the pressure responsive apparatus providing an output pressure signal at the outlet means substantially equal to the lowest of the input pressure signals.
Claim 3
Dependent Claim
35 words
Pressure responsive apparatus according to claim 1 wherein the exhaust means comprises conduit means interconnecting each of the valving chambers of the diaphragm modules thereby providing a single exhaust for all of the diaphragm modules.
Claim 4
Dependent Claim
14 words
Pressure responsive apparatus according to claim 2 wherein the outlet means includes a restriction.
Claim 5
Dependent Claim
90 words
Pressure responsive apparatus according to claim 1 in combination with a system for optimally controlling a physical condition in a plurality of regions, each of the regions have a condition responsive device, wherein: sets of said condition responsive devices and said control chambers of said diaphragm modules are interconnected; and, said output means is in communication with means capable of affecting a change in said physical condition, whereby the condition-changing capability of said means is varied in accordance with the demand for such variation in a zone of greatest deviation.
Claim 6
Dependent Claim
92 words
Pressure responsive apparatus according to claim 3 in combination with a system for optimally controlling a physical condition in a plurality of zones, each of the zones having a condition responsive device, wherein: sets of said condition responsive devices and said control chambers of said plurality of diaphragm modules are interconnected; and, said output means is a communication with means capable of affecting a change in said physical condition, whereby the condition-changing capability of said means is varied in accordance with the demand for such variation in a zone of greatest deviation.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |