US4391406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power saving system which assures room security
Assignee: Individual
•
Filing: 1982-01-07
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Granted: 1983-07-05
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Expires: 2002-01-07
Abstract
Abstract A power saving unit which also assures room security by requiring a door to be properly locked before particular electric loads will be energized. The system includes switches connected to the door providing indication of whether the door is open, closed, or locked. A control circuit controls the energization of a particular electric load connected to the system. A suitable gate responds to the door being locked or opened to activate the control circuit for maintaining the load energized. It responds to the door being closed but unlocked to keep the load energized for a predetermined interval of time after which the load will be switched off. Suitable indicator lights are provided to remind the guest to lock his door in order to retain the loads energized.
Inventors
- 👤 Morton Fried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:55
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/1902; Y; Y10; Y10T; Y10T70/00; Y10T70/50
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
185 words
A power saving system for conserving energy consumption by electric loads in a room having a door with a locking system, and which system also assures room security, comprising: closure switch means for coupling to the door and producing a control signal only throughout the time the door is opened; lock switch means for coupling to the door locking system and producing a control signal only throughout the time of proper locking of the door, both said control signals being the same; control means associated with an electric load in the room, and wire means coupling said closure switch means and said lock switch means in parallel to said control means, said control means comprising timing means responsive to the termination of a control signal on said wire means for producing a control signal for a preset limited interval of time, and for ceasing operations upon the presence of a control signal on said wire means, and control switch means responsive to any of the aforesaid control signals for controlling the energization of the electric load during the time that a control signal is present.
Claim 2
Dependent Claim
185 words
A power saving system for conserving energy consumption by electric loads in a room having a door with a locking system, and which system also assures room security, comprising: closure switch means for coupling to the door and producing a control signal only throughout the time the door is opened; lock switch means for coupling to the door locking system and producing a control signal only throughout the time of proper locking of the door, both said control signals being the same; control means associated with an electric load in the room, and wire means coupling said closure switch means and said lock switch means in parallel to said control means, said control means comprising timing means responsive to the termination of a control signal on said wire means for producing a control signal for a preset limited interval of time, and for ceasing operations upon the presence of a control signal on said wire means, and control switch means responsive to any of the aforesaid control signals for controlling the energization of the electric load during the time that a control signal is present.
Claim 3
Dependent Claim
37 words
A power saving system as in claim 1, and further comprising indicator means responsive to said timing means for producing an indicator output at a preset time prior to the expiration of said preset limited time interval.
Claim 4
Dependent Claim
42 words
A power saving system as in claim 1, and further comprising a timing mechanism settable for a desired time interval and producing a control signal for said desired time interval, said control switch means being responsive to said last mentioned control signal.
Claim 5
Dependent Claim
30 words
A power saving system as in claim 1, and further comprising indicator means responsive to the absence of a control signal for producing a reminder signal to lock the door.
Claim 6
Dependent Claim
36 words
A power saving system as in claim 1, wherein said control switch means comprises a switch device which can energize the electric load with high voltage levels and is itself activated by a low voltage level.
Claim 7
Dependent Claim
18 words
A power saving system as in claim 5, wherein said switch device comprises a solid state relay switch.
Claim 8
Dependent Claim
49 words
A power saving system as in claim 1, wherein the electric load is of the heating and/or air conditioning type, and further comprising an offset control unit for providing an offset signal during the absence of a control signal for activating said control means in accordance with predetermined conditions.
Claim 9
Dependent Claim
16 words
A power saving system as in claim 7, wherein said offset control unit comprises a thermostat.
References Cited (Backward Citations)
US4101886A
Cited
US4315596A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-04 | 1987-01-03 | 1987-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-04 | 1991-01-03 | 1991-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-04 | 1995-01-03 | 1995-07-05 | $7700.00 | Window Closed / Lapsed |