Programmable timer mechanism

• US 3,929,284 A
• Filed: 07/25/1974
• Issued: 12/30/1975
• Est. Priority Date: 07/25/1974
• Status: Expired due to Term

• Current Assignee: Edward Mills, Mike Prewarski
• Original Assignee: Edward Mills, Mike Prewarski
• Inventors: Prewarski, Mike, Mills, Edward
• Primary Examiner(s): Wayner, William E.
• Application Number:
  US05/491,635
• Time in Patent Office: 523 Days
• Field of Search: 236/47,46 337/302,303 165/12
• US Class Current: 236/46.00R
• CPC Class Codes: G04C 23/34 with provision for automatic modification of the programme, e.g. on Sunday
• CPC Class Codes: G05D 23/1904 variable in time
• CPC Class Codes: G05D 23/275 with sensing element expanding, contracting, or fusing in response to changes of temperature

Abstract

A programmable timer mechanism for a dual temperature thermostat having high and low temperature settings. The mechanism includes two programmable members, each controlling, for a first predetermined period, the time in which the '"'"''"'"''"'"''"'"'high'"'"''"'"''"'"''"'"' thermostat is effective to maintain a desired temperature and, for a second predetermined period, the time in which the '"'"''"'"''"'"''"'"'low'"'"''"'"''"'"''"'"' thermostat is effective to maintain a desired temperature. One programmable member may correspond to a weekday life cycle of the occupant of a building to maintain high and low temperatures at appropriate times while the other member may correspond to a weekend life cycle to maintain such high and low temperatures at appropriate times. Automatic and manual switches are provided for activating the programmable members.

Claims

1. A dual temperature control system for controlling the temperature of a zone comprising:

a. first and second zone thermostats;

b. a first programmable means for determining the time said first and second thermostats are effective to control temperature of said zone;

c. a second programmable means for determining the time said first and second thermostats are effective to control temperature;

d. means for automatically selecting which of said first and second programmable means determines when said thermostats are effective to control temperature; and

e. means for manually selecting one of said first and second programmable means to determine when said thermostats are effective to control temperature.

2. The system of claim 1 further comprising means for overriding said first and second programmable means to control temperature by one of said thermostats.

3. The system of claim 2 wherein said first thermostat is effective to control temperature during a first time period determined by the selected programmable means and said second thermostat is effective to control temperature during a second time period determined by the selected programmable means.

4. The system of claim 3 wherein said first and second thermostats have switch contacts and are connected in a series circuit relationship so that when the temperature is sufficient to close the switch contacts of both thermostats, an electrical circuit is completed through both thermostats to maintain a particular temperature.

5. The system of claim 4 further comprising a circuit board for interconnecting said first and second thermostats.

6. A dual temperature control system for controlling the temperature of a zone comprising:

a. first and second zone thermostats which have switch contacts and are connected in a series circuit relationship so that when the temperature is sufficient to close the switch contacts of both thermostats, an electrical circuit is completed through both thermostats to maintain a desired temperature of said zone;

b. a first programmable means for determining the time said first and second thermostats are effective to control temperature;

c. a second programmable means for determining the time said first and second thermostats are effective to control temperature; and

d. means for selecting one of said first and second programmable means to determine when said thermostats are effective to control temperature.