Abstract: The present invention provides a thermostat which does not abrade a monitored object, even if movable, and is superior in heat-responsiveness.

Abstract: A user adjustable switching controller for duty cycle regulating flow of current to an electrical load such as a resistance heater, particularly for cooking appliances. A load current switch, when closed by a user operated cam also energizes a heat motor which includes a resistive strip attached to one active leg of a U-shaped bi-metal member. The load current switch snap spring is attached to the heated leg of the bi-metal. The other leg of the U-shaped bi-metal is anchored to one of the load connecting stationary terminals and serves to provide ambient temperature compensation. User rotation of the cam deflects a bias spring which acts on the portion of the bi-metal attached to the load switch snap spring to effect closing of the load current switch and energization of the heat motor. Heating of the bi-metal causes warpage which overcomes the bias spring to open the load switch and shut off the heat motor. Cooling of the bi-metal allows the load current switch to re-close repeating the cycle.

Abstract: A control assembly for a household refrigerator having a mullion partition separating the freezer compartment and the fresh food compartment with a front face and a bottom panel forming the top of the fresh food compartment. There is a control bracket mounted on the bottom panel at the rear of the mullion partition and this bracket has a circular aperture with two radial notches. A thermostat having a rotatable stem for adjusting the thermostat setting is mounted on the control bracket. There is a rotatable hub member having a circular central portion with radial lugs slightly smaller than the circular aperture and radial notches of the control bracket. The portion of the central portion that projects through the circular aperture and radial notches is rotated to mount the hub member on the control bracket. There is an aperture in the center of the circular central portion to receive the rotatable stem of the thermostat and it is dimensioned to rotate the stem in unison with rotation of the hub member.

Abstract: There is disclosed a timer mechanism having a driven clock dial with a mechanism for sequential operational modes activated by arms which are adjustably fixedly carried on the clock dial. The invention comprises a bracket fixedly carried on the clock dial which receives a removeable arm clip permitting the clip to be removed and the arm deactivated. The device is particularly intended for use with room or space heating thermostats and the removeable clip permits conversion of the thermostat from single to multile set-back capability.

Abstract: A time variable thermostat for controlling a heater comprising, a temperature activated switch connected to the heater for deactivating the heater at a selected temperature having a movable contact and at least one fixed contact, the movable contact being moved into abutment with the fixed contact when a temperature other than the selected temperature is reached to activate the heater and moved into abutment with the fixed contact to deactivate the heater when the selected temperature is reached. A temperature selection arm is connected to the movable contact and associated with a scale for selecting the temperature at which the movable contact is moved out of abutment with the fixed contact.

Abstract: A timer controlled heat emission device for modifying the operation of a wall mounted thermostat includes a housing slidably mounted on the wall adjacent the thermostat, an electrical heating element disposed in the housing in heat emission relation with the thermostat, switching means movable between a first position in which the heating element is connected to a source of electricity and a second position in which the heating element is disconnected from the source, a timer activatable for a preselected time period, and control means operatively connected to the timer for moving the switching means between the two positions upon the activation and deactivation of the timer.

Abstract: A timer controlled space thermostat includes a timer movement energized by a rechargeable battery. A first timer operated switch is in circuit with temperature responsive switching means and space conditioning apparatus control means and is operative to alternately control operation of the space conditioning apparatus control means at one and then the other of two different levels of temperature. A second timer operated switch is in circuit with the space conditioning apparatus control means and with circuit means for recharging the battery and is cyclically actuated to an open position to ensure complete de-energization of the space conditioning apparatus control means and to a closed position to enable the battery to be recharged.

Abstract: A thermal timer has a pair of means responsive to oppositely acting thermal differentials established therebetween for pivotally moving generally in opposite directions through a predetermined time cycle.A thermal control system, and circuit for operating an electrical device, and a thermal actuator for a thermal timer are also disclosed.