US3871443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety control for a remote control system
Assignee: General Electric Co
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Filing: 1974-04-17
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Granted: 1975-03-18
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Expires: 1994-04-17
Abstract
Abstract Safety control apparatus including a remote system for turning a zone heating and cooling air conditioning unit on and off from a central control point and a safety freeze control system for simultaneously switching the unit from a normal operating mode to a heating mode at a predetermined temperature and overriding the remote control system.
Inventors
- 👤 Allen G Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:05
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/50; F24F11/56; F24F11/70; F24F11/72; F24F11/74; F24F11/80; F24F11/86; F24F11/88; F24F11/30; F24F11/41; F24F2110/00; F24F2110/10; F24F2221/00; F24F2221/54
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
118 words
Safety control apparatus for a remotely controlled zone unit having heating and cooling system including a fan for circulating enclosure air comprising: mode control means including switch means for placing said zone system in condition to operate either in a normal heating or cooling operating mode or in a safety heating mode; remote control input means responsive to a remote control source for turning said zone unit on and off; and safety thermostat switch means responsive to a predetermined temperature for simultaneously conditioning said mode control means to operate said system in the safety heat mode and to override the operation of the remote control input means and said normal operating mode to automatically energize said heating system.
Claim 2
Dependent Claim
118 words
Safety control apparatus for a remotely controlled zone unit having heating and cooling system including a fan for circulating enclosure air comprising: mode control means including switch means for placing said zone system in condition to operate either in a normal heating or cooling operating mode or in a safety heating mode; remote control input means responsive to a remote control source for turning said zone unit on and off; and safety thermostat switch means responsive to a predetermined temperature for simultaneously conditioning said mode control means to operate said system in the safety heat mode and to override the operation of the remote control input means and said normal operating mode to automatically energize said heating system.
Claim 3
Dependent Claim
37 words
The invention of claim 1 wherein said safety thermostat switch means includes a first switch connected in series with said mode control means, and a second switch connected in series with heating means in said heating system.
Claim 4
Dependent Claim
24 words
The invention of claim 2 wherein said remote control input means is serially connected through a first switch means in said mode control means.
Claim 5
Dependent Claim
24 words
The invention of claim 2 wherein said remote control input means is serially connected through a third switch in said safety thermostat switch means.
Claim 6
Dependent Claim
67 words
The invention of claim 3 wherein said mode control switch means includes a second switch means connected in series with a cooling system switch and said fan, a third switch connected in series with a heating System switch and said fan, one of said second or third switch means having a second contact connected in series with said fan independent of said cooling and heating system switches.
Claim 7
Dependent Claim
65 words
The invention of claim 4 wherein said mode control switch means includes a first switch connected in series with a cooling system switch and said fan, a second switch connected in series with a heating system switch and said fan, one of said first or second switch having a second contact connected in series with said fan independent of said cooling and heating system switches.
Claim 8
Dependent Claim
42 words
The invention of claim 5 wherein said remote control input means includes a relay switch means series connected to said first switch means in said mode control means and switch means associated with said relay for turning said unit on and off.
Claim 9
Dependent Claim
40 words
The invention of claim 6 wherein said remote control input means includes a relay series connected to said third switch in said safety thermostat switch means and switch means associated with said relay for turning said unit on and off.
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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |