US3934797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Individual room temperature control system
Assignee: Individual
•
Filing: 1974-05-28
•
Granted: 1976-01-27
•
Expires: 1994-05-28
Abstract
Abstract A temperature control system for individual rooms within a home is disclosed having a pair of thermostatically controlled switches settable to "occupied" and "unoccupied" temperatures respectively with a clock controlled switching arrangement for determining which thermostatically controlled switch is effective during predetermined hours of the day. The clock selected thermostatically controlled switch is coupled by way of a relay to control a forced air duct opening and closing louver arrangement so that the duct may be opened for either heating or cooling during unoccupied periods of time a lesser percentage than it is opened during periods of the day when the room is typically occupied.
Inventors
- 👤 Neal Robert Perlmutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:41
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/70; F24F11/72; F24F11/74; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1902; G05D23/1904; G05D23/275
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
197 words
A temperature control system for an individual room of a home or similar air which is typically occupied during certain hours of the day and unused during other hours of the day and which receives air from a forced air duct connecting to a central unit comprising: a pair of thermostatically controlled switches each changing state at an individually selectable temperature; electrically controllable means for selectively opening and closing the duct including means in the air duct mechanically movable between air passing and air blocking positions, electrically energizable means for moving the mechanically movable means cyclically between the air passing and air blocking positions so long as the electrically energizable means is energized, and a pair of normally closed switches one of which opens only when the mechanically movable means is in the air passing position and the other of which opens only when the mechanically movable means is in the air blocking position with each normally closed switch being coupled to the electrically energizable means to tentatively stop the mechanically movable means when one of the normally closed switches opens; and means for selectively connecting one of the thermostatically controlled switches to the electrically controllable means.
Claim 2
Dependent Claim
197 words
A temperature control system for an individual room of a home or similar air which is typically occupied during certain hours of the day and unused during other hours of the day and which receives air from a forced air duct connecting to a central unit comprising: a pair of thermostatically controlled switches each changing state at an individually selectable temperature; electrically controllable means for selectively opening and closing the duct including means in the air duct mechanically movable between air passing and air blocking positions, electrically energizable means for moving the mechanically movable means cyclically between the air passing and air blocking positions so long as the electrically energizable means is energized, and a pair of normally closed switches one of which opens only when the mechanically movable means is in the air passing position and the other of which opens only when the mechanically movable means is in the air blocking position with each normally closed switch being coupled to the electrically energizable means to tentatively stop the mechanically movable means when one of the normally closed switches opens; and means for selectively connecting one of the thermostatically controlled switches to the electrically controllable means.
Claim 3
Dependent Claim
57 words
The temperature control system of claim 1 wherein the means for selectively connecting comprises clock controlled switch means for selectively connecting one of the thermostatically controlled switches to the electrically controllable means during a first predetermined time period and the other of the thermostatically controlled switches to the electrically controllable means during a second predetermined time period.
Claim 4
Dependent Claim
60 words
The temperature control system of claim 2 wherein the electrically controllable means further comprises a double-pole single-throw relay having an actuating circuit coupled by the clock selected thermostatic switch to a source of electrical energy, the relay tentatively forming alternate series circuits each by way of one of the normally closed switches to supply energy to the electrically energizable means.
Claim 5
Dependent Claim
42 words
The temperature control system of claim 3 wherein each change in the status of the clock selected thermostatic switch causes a corresponding change in the relay status thereby selecting a different normally closed switch to supply energy to the electrically energizable means.
Claim 6
Dependent Claim
44 words
The temperature control system of claim 1 wherein the electrically energizable means comprises an electric motor, an eccentric arm driven by the motor and coupled to the mechanically movable means, and a cam driven by the motor and operatively engaging the normally closed switches.
Claim 7
Dependent Claim
59 words
The temperature control system of claim 1 wherein the electrically controllable means comprises a plurality of hinged louvers, linkage means connecting the louvers together for simultaneous parallel opening and closing of the louvers, and electrically energizable means responsive to a thermostatically controlled switch for moving the louvers between air passing and air blocking positions within the forced air duct.
Claim 8
Dependent Claim
65 words
The temperature control system of claim 1 wherein the central unit is a combination heating and cooling unit, the electrically controllable means including a mode switch switchable between heating and cooling modes for opening the ducts when the temperature is below a desired level in the heating mode and for closing the duct when the temperature is below a desired level in the cooling mode.
References Cited (Backward Citations)
US2950056A
Cited
US3814312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-26 | 1979-07-28 | 1980-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-26 | 1983-07-28 | 1984-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-26 | 1987-07-28 | 1988-01-27 | $7700.00 | Window Closed / Lapsed |