Patent US4035796A successfully refreshed from Google Patents.
US4035796A
Expired / Lapsed
US
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Device for reducing undesired energy consumption in a room provided with heating and/or air conditioning means
Assignee: Individual
•
Filing: 1975-08-04
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Granted: 1977-07-12
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Expires: 1995-08-04
Abstract
Abstract Disclosed is a simple apparatus for turning off a heating or air conditioning unit when a door or window is opened. Switches activated by the opening of doors or windows control the operation of a heater or air conditioner through a relay system that doubles as a burglar alarm when an alarm circuit is activated.
Inventors
- 👤 Sven Hedly
- 👤 Lars Winhammar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:26
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/1902; F; F24; F24F; F24F11/00; F24F11/30; F24F11/32; F24F11/33; F24F11/46; F24F11/47; F24F11/50; F24F11/52; F24F11/88; F24F11/89; F24F2110/00; F24F2110/10; F24F2140/00; F24F2140/40
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
145 words
A device for reducing undesired energy consumption in a room provided with heating and/or air conditioning means, characterized by an electric control circuit (3) arranged in the room and provided with a number of contacts (4; 16) located at closable openings in the room and adapted to be influenced by the position of closure elements arranged in said openings, in such a manner that the contacts when the openings are closed will allow energy supply to the said heating or air conditioning means, while being adapted to break said energy supply when one or more of said closure elements is opened, said contacts when breaking said energy supply further being adapted to close an alarm activating circuit provided with an alarm activating switch (9; 21) and arranged to activate an alarm apparatus (8; 20) in said alarm circuit provided the alarm activating switch is closed.
Claim 2
Independent Claim
145 words
A device for reducing undesired energy consumption in a room provided with heating and/or air conditioning means, characterized by an electric control circuit (3) arranged in the room and provided with a number of contacts (4; 16) located at closable openings in the room and adapted to be influenced by the position of closure elements arranged in said openings, in such a manner that the contacts when the openings are closed will allow energy supply to the said heating or air conditioning means, while being adapted to break said energy supply when one or more of said closure elements is opened, said contacts when breaking said energy supply further being adapted to close an alarm activating circuit provided with an alarm activating switch (9; 21) and arranged to activate an alarm apparatus (8; 20) in said alarm circuit provided the alarm activating switch is closed.
Claim 3
Dependent Claim
55 words
A device according to claim 1, characterized thereby, that each contact (4) is adapted to influence a relay (7) to allow current supply to means for direct or indirect energy supply, when the closing elements are in closed state, the relay further being adapted to close the alarm activation circuit in its second, alternative position.
Claim 4
Dependent Claim
54 words
A device according to claim 1, characterized thereby, that each contact (16) is adapted to actuate an electric circuit having an electric heating element (17), whereby the heating element (17), when one or more of the closing elements is opened, is arranged to emit heat for releasing a thermostatic relay of the heating device.
Claim 5
Dependent Claim
34 words
A device according to claim 1, characterized thereby, that the alarm activation circuit includes an impulse relay (10) adpated to maintain the said circuit in a closed state after a very short activation impulse.
Claim 6
Dependent Claim
67 words
A device according to claim 1, characterized thereby that the current control circuit (3) includes a part circuit (12) connected to a further alarm apparatus (14) which is under actuation of sensing members (13) preferably located in series with said contacts (4; 16) and adapted to produce an alarm activation impulse when sensing an elevated temperature, smoke or the like in order to give a fire alarm.
Claim 7
Dependent Claim
57 words
A device according to claim 1, characterized thereby, that the current control circuit (3) is common for a number of rooms (2), which is each provided with its own contacts (4; 16) and actuation means (7; 17) influenced by said contacts, whereas the circuit includes only one burgler alarm device (8-10; 18-21) common for all rooms (2).
References Cited (Backward Citations)
US3729735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-11 | 1981-01-10 | 1981-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-11 | 1985-01-10 | 1985-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-11 | 1989-01-10 | 1989-07-12 | $7700.00 | Window Closed / Lapsed |