Abstract: A mounting device for a pivotally movable member. The mounting device has means for pivotally mounting the member, means for supporting the mounting means, and a pair of means for abutment with the mounting means so as to generally constrain its movement therebetween. Means for displacement preventing engagement with the mounting means includes means disposed generally in overlaying relation with the mounting means for retaining it against displacement from the supporting means between the abutment means, and means extending through the supporting means into engagement with a portion thereof for maintaining the overlaying relation of the retaining means with respect to the mounting means.

Abstract: A method of actuating means for detecting radiant heat from a source thereof with the detecting means having a pair of metallic strips with adjacent oppositely spaced portions thereof interconnected. This method includes the steps of: shielding at least a part of one of the strips from the radiant heat source while subjecting the other of the strips thereto for effecting relative elongation of the strips and causing one of the interconnected adjacent oppositely spaced portions of the strips to pivot relative to the other of the interconnected adjacent oppositely spaced portions thereof; and effecting the movement of means toward at least one position for controlling an electrical circuit in response to the pivotal movement of the strips.A system is also disclosed.

Abstract: A condition responsive electrical switch is provided with a housing, and means is movable in the housing between opposite positions for controlling the flow of power through the switch. Means is pivotally movable in the housing for effecting actuation of the controlling means between its opposite positions, and means is operable generally in response to a certain condition for driving the actuation means to pivot it and conjointly move the controlling means toward one of its opposite positions. Means is selectively operable for biasing the actuation means against the driving means to also pivot the actuation means and effect conjoint movement of the controlling means toward the other of its opposite positions.A method of operating a condition responsive electrical switch and a control system are also disclosed.

Abstract: A detector for radiant heat has a housing with means movable therein between positions for controlling an electrical circuit. A pair of elongate metallic strips are disposed generally in overlaying relation and have adjacent portions thereof respectively interconnected, and one of the strips is adapted to be subjected to the radiant heat while generally shielding at least a part of the other of the strips therefrom. Means is spaced from the interconnected adjacent portions of the strips for separating them, and the one strip is elongatable upon subjection of radiant heat thereto relative to the shielded other strip for effecting pivotal movement of the strips generally about the separating means. Means is disposed between at least one of the one and other strips and the controlling means for effecting movement thereof to at least one of the circuit controlling positions upon the pivotal movement of the strips.

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.