Electronic timer and thermoswitch device

• US 4,079,366 A
• Filed: 05/20/1976
• Issued: 03/14/1978
• Est. Priority Date: 05/20/1976
• Status: Expired due to Term

• Current Assignee: Gim Wong
• Original Assignee: Gim Wong
• Inventors: Wong, Gim
• Primary Examiner(s): Pitts, Harold I.
• Application Number:
  US05/688,401
• Time in Patent Office: 663 Days
• Field of Search: 340/309.4, 340/409, 235/92 T, 235/151.1, 307/141
• US Class Current: 340/309.4
• CPC Class Codes: G04C 23/347 some operations being overridden
• CPC Class Codes: G04G 15/006 for operating at a number of different times cigar or cigarette receptacles or boxes with means for limiting the frequency of smoking A24F15/005
• CPC Class Codes: G05B 19/102 for input of programme steps, i.e. setting up sequence
• CPC Class Codes: G05D 23/1904 variable in time

Abstract

An electronic programmable clock timer permits a program of times to be set so that certain electrical functions either AC or DC, can be operated responsive to the times set. A high and low range temperature selector can be set to turn ON or OFF thus operating certain electrical functions such as heating, cooling, lights, etc. When in the selected operating time range, means are provided to eliminate operation of the device on certain days or within certain time periods. Extensive use is made of I.C. circuitry, including memory circuits, comparator circuits and the like.

Claims

1. A device for controlling electrical equipment comprising in combination an electronic clock, a time display device operatively connected to said electronic clock, a time setting keyboard for producing pulses, a memory unit, means operatively connecting said memory unit to said time setting keyboard for injecting ON times and duration times within said memory unit, said means including means to translate said pulses into binary coded decimal format, an address selector counter operatively connected to said keyboard, means whereby each pulse from said keyboard operates said address selector counter, said address selector counter being operatively connected to said memory unit, a comparator module operatively connected to said memory unit and to said address selector counter and an alarm duration counter operatively connected to said comparator module, an alarm output module operatively connected to said alarm duration counter, and a plurality of relay controlled output circuits operatively connected to said alarm output module, said comparator module operating said alarm output module and energizing said relay controlled output circuits when the time entered in said memory unit coincides with the time displayed on said time display device thereby operating said relays.

2. The device according to claim 1 in which said an alarm duration counter is operatively connected to said comparator module and to said alarm output module for de-energizing said alarm output module and hence said relays when duration time in said memory unit coincides with the time on said display device.

3. The device according to claim 1 which includes a Day-Off selector keyboard for selecting days upon which said alarm output is energized and a Day-Off selector counter operatively connected to said clock and between said Day-Off selector keyboard and said memory unit.

4. The device according to claim 2 which includes a Day-Off selector keyboard for selecting days upon which said alarm output is energized and a Day-Off selector counter operatively connected to said clock and between said Day-Off selector keyboard and said memory unit.

5. The device according to claim 1 which includes circuit means to call up information from said memory circuit and to display same on said time display device.

6. The device according to claim 2 which includes circuit means to call up information from said memory circuit and to display same on said time display device.

7. The device according to claim 3 which includes circuit means to call up information from said memory circuit and to display same on said time display device.

8. The device according to claim 4 which includes circuit means to call up information from said memory circuit and to display same on said time display device.

9. The device according to claim 1 which includes two-position selector switch means operatively connected between said time setting keyboard and said address selector counter for advancing said counter automatically upon actuation of said time selector keyboard when said switch means is in one position and further switch means to manually advance said address selector counter when said selector switch is in another position.

10. The device according to claim 1 which includes a thermoswitch assembly operatively connected to one of said relay controlled output circuits of said alarm output module, said thermoswitch assembly including a low range temperature selector and a high range temperature selector, a temperature sensor and a comparator operatively connected together, and an output relay means operatively connected to said comparator, the associated electrical equipment being operatively connected to said output relay means.

11. The device according to claim 10 which includes an hysteresis circuit operatively connected between said output relay means and said comparator for controlling the range through which the variation of ambient temperature passes before energizing and de-energizing said relay means.