US3692240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic control system
Assignee: Honeywell Inc
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Filing: 1970-07-24
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Granted: 1972-09-19
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Expires: 1990-07-24
Abstract
Abstract A pneumatic control system for optimally controlling a condition in a plurality of zones, each zone having a thermostat or the like. Each thermostat is in communication and has proximately associated therewith valve means. The valve means are suitably interconnected and are in communication with a source of air pressure and output means, which output means provides a signal indicative of either the highest or the lowest of the output pressures of the thermostats.
Inventors
- 👤 Donald H Spethmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:04
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/62; F24F11/30; F24F13/00; F24F13/08; F24F13/082; F24F2013/087; F24F2110/00; F24F2110/10; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
155 words
In a pneumatic temperature control system for controlling temperature in a plurality of regions, the system including pneumatic thermostat means in each of the regions, first conduit means interconnecting each thermostat means with a regulated supply of fluid under pressure, each thermostat means having a branch line pressure output indicative of the temperature in the associated region, and means communicating each branch line pressure output to means for altering the temperature of the associated region, the improvement comprising; valve means proximately associated with each of the thermostat means, each valve means being in communication with and under the control of the branch line pressure output of the associated thermostat means; second conduit means interconnecting the valve means; and output means in communication with the second conduit means for providing a fluid pressure indicative of the branch line pressure of the thermostat means subject to a most extreme of the temperatures in the plurality of regions.
Claim 2
Dependent Claim
155 words
In a pneumatic temperature control system for controlling temperature in a plurality of regions, the system including pneumatic thermostat means in each of the regions, first conduit means interconnecting each thermostat means with a regulated supply of fluid under pressure, each thermostat means having a branch line pressure output indicative of the temperature in the associated region, and means communicating each branch line pressure output to means for altering the temperature of the associated region, the improvement comprising; valve means proximately associated with each of the thermostat means, each valve means being in communication with and under the control of the branch line pressure output of the associated thermostat means; second conduit means interconnecting the valve means; and output means in communication with the second conduit means for providing a fluid pressure indicative of the branch line pressure of the thermostat means subject to a most extreme of the temperatures in the plurality of regions.
Claim 3
Dependent Claim
36 words
The control system according to claim 1 wherein said output means provideS a pressure indicative of the branch line pressure of the thermostat means subject to the highest of the temperatures in the plurality of regions.
Claim 4
Dependent Claim
36 words
The control system according to claim 1 wherein said output means provides a pressure indicative of the branch line pressure of the thermostat means subject to the lowest of the temperatures in the plurality of regions.
Claim 5
Dependent Claim
67 words
The control system according to claim 1 wherein said output means provides two pressures, one of which is indicative of the branch line pressure of the thermostat means subject to the highest of the temperatures in the plurality of regions, and one of which is indicative of the branch line pressure of the thermostat means subject to the lowest of the temperatures in the plurality of regions.
Claim 6
Dependent Claim
72 words
The control system according to claim 1 wherein each of said valve means comprises: housing means; diaphragm means dividing said housing means into a control chamber and flow chamber, said control chamber being adapted to receive the branch line output pressure from the proximately associated thermostat means; and partition means disposed within the flow chamber and arranged to operate in sealable relation with the diaphragm means to further define a valving chamber.
Claim 7
Dependent Claim
95 words
The control system according to claim 5 wherein said second conduit means includes means serially interconnecting the flow and valving chambers of said valve means, an exhaust means communicates with the valving chamber of one of said valve means, and said output means communicates with the flow chamber of another one of said valve means and communicates with said regulated supply of fluid through a restriction, whereby the output means provides a pressure indicative of the branch line pressure of the thermostat means subject to the highest of the temperatures in the plurality of regions.
Claim 8
Dependent Claim
90 words
The control system according to claim 5 further comprising: exhaust means connected to the valving chambers of each of said valve means; said second conduit means including means interconnecting in parallel the flow chambers of each of said valve means; and said output means communicating with said second conduit means and communicating with said regulated supply of fluid through a restriction whereby the output means provides a pressure indicative of the branch line pressure of the thermostat means subject to the lowest of the temperatures in the plurality of regions.
Claim 9
Dependent Claim
109 words
The control system according to claim 7 further comprising: second valve means proximately associated with each of said thermostat means; third conduit means including means serially interconnecting the flow and valving chambers of the second valve means; exhaust means communicating with the valving chamber of one of said second valve means; and second output means communicating with the inlet chamber of another one of said second valve means and communicating with said regulated supply of fluid through a restriction, whereby said second output means provides a pressure indicative of the branch line pressure of the thermostat means subject to the highest of the temperatures in the plurality of regions.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |