THERMOMETER AND DOORBELL CHIME IN WHEATSTONE BRIDGE CIRCUIT

• US 3,624,646 A
• Filed: 09/16/1970
• Issued: 11/30/1971
• Est. Priority Date: 09/16/1970
• Status: Expired due to Term

• Current Assignee: Joseph Weiss
• Original Assignee: Joseph Weiss
• Inventors: Weiss, Joseph
• Primary Examiner(s): Pitts, Harold I.
• Application Number:
  US05/072,636
• Time in Patent Office: 440 Days
• Field of Search: 340/371,330,285
• US Class Current: 340/815.69
• CPC Class Codes: G08B 5/22 using electric transmission; using electromagnetic transmission

Abstract

A thermometer/chime combination wherein the usual chime circuitry is modified to indicate the outdoor temperature during the period of time that the chime is not in actual use. Thus, the composite circuitry normally indicates the temperature; but sounds the chime tone when the exterior pushbutton is activated.

Claims

1. A thermochime combination comprising:

means, comprising a chime circuit and a pushbutton for producing a chime tone;

means, comprising a thermocircuit and a temperature-sensing element and an indicator for producing a temperature indication;

means, electrically interconnecting said chime circuit and said thermocircuit, for causing said thermocircuit to normally indicate the temperature, but to sound said chime tone when said pushbutton is activated.

2. The combination of claim 1, including means comprising at least one diode for causing a given polarity of an AC power source to energize said thermocircuit.

3. The combination of claim 1, including means comprising at least one diode for causing a given polarity of an AC power source to energize said chime circuit when said pushbutton is activated.

4. The combination of claim 1, including means comprising at least one diode for causing a given polarity of an AC power source to energize said thermocircuit;

means comprising at least one diode for causing the other polarity of said AC power source to energize said chime circuit when said pushbutton is activated.

5. The combination of claim 1, including means comprising at least one diode for causing a given polarity of an AC power source to energize said thermocircuit;

means for causing both polarities of said AC power source to energize said chime circuit when said pushbutton is activated.

6. The combination of claim 1, including means comprising at least one diode for causing a given polarity of an AC power source to energize said chime circuit when said pushbutton is activated;

means for causing both polarities of said AC power source to energize said thermocircuit.

7. A thermochime combination comprising:

four electrical arms interconnected in an electrical bridge circuit configuration having two pairs of opposite connection points;

a first arm comprising a temperature-sensing element;

a second arm comprising a balancing resistor;

a third arm comprising a solenoid coil;

a fourth arm comprising a stabilizing resistor;

an indicator connected between one pair of said connection points;

whereby a source of AC power may be connected between the other pair of connection points;

means, comprising a pushbutton for completing the electrical circuit through said solenoid coil.