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US 4,129,847 AGranted
Cut-back thermostat construction
AssigneeRobertshaw Controls Company
InventorAllen L. Teichert
Life of this patent
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AssigneeRobertshaw Controls Company
InventorAllen L. Teichert
Estimating the term…
A cut-back thermostat construction having a thermostat arrangement and a timer carried by a housing in such a manner that the timer will cut back the temperature setting of the thermostat arrangement by moving an electrical switch of the thermostat arrangement relative to a temperature responsive switch operator of the thermostat arrangement when a predetermined time is reached by the timer. A movable actuator is operatively associated with the switch to be adapted to cause a certain movement of the switch relative to the switch operator when the actuator is moved from a first position thereof to a second position thereof by the timer when the predetermined time is reached. An adjustable member is separate from the actuator and is adapted to select the amount of movement of the switch relative to the switch operator when the actuator is moved from the first position thereof to the second position thereof whereby the adjustable member selects the cut-back temperature of the thermostat arrangement. A pair of spaced stops are carried inside the housing for limiting the degree of adjustment of the adjustable member and, thus, the amount of movement of the switch relative to the switch operator. The timer comprises a rotatable time indicating dial carrying an adjustable tab to be set at different positions therewith for selecting the predetermined time for adjusting the thermostat arrangement, the adjustable tab being snap-fitted to the dial.
In a cut-back thermostat construction having a thermostat arrangement and a timer means carried by a housing means in such a manner that said timer means will cut-back the temperature setting of said thermostat arrangement by moving an electrical switch means of said thermostat arrangement relative to a temperature responsive switch operator of said thermostat arrangement when a predetermined time is reached by said timer means, said construction also having movable actuator means that is carried by said housing means and is operatively associated with said switch means to be adapted to cause a certain movement of said switch means relative to said switch operator when said actuator means is moved from a first position thereof to a second position thereof by said timer means when said predetermined time is reached by said timer means, said construction also having adjustable means that is carried by said housing means and is separate from said actuator means for selecting the amount of movement of said switch means relative to said switch operator when said actuator means is moved from said first position thereof to said second position thereof whereby said adjustable means selects the cut-back temperature of said thermostat arrangement, the improvement comprising stop means carried inside said housing means for limiting the degree of adjustment of said adjustable means and, thus, the amount of movement of said switch means relative to said switch operator.
In a thermostat construction having a thermostat arrangement and a timer means carried by a housing means in such a manner that said timer means will adjust the temperature setting of said thermostat arrangement when a predetermined time is reached by said timer means, said timer means comprising a rotatable time indicating dial carrying an adjustable tab to be set in different positions therewith for selecting a desired predetermined time for adjusting said thermostat arrangement, the improvement wherein said adjustable tab is snap-fitted to said dial.
In a timer dial for a thermostat construction having a thermostat arrangement and a timer means carried by a housing means in such a manner that said timer means will adjust the temperature setting of said thermostat arrangement when a predetermined time is reached by said timer means, said time indicating dial carrying an adjustable tab to be set in different positions therewith for selecting a desired predetermined time for said timer means to adjust said thermostat arrangement, the improvement wherein said adjustable tab is snap-fitted to said dial.
Dependencies are inferred from the claim text.