Condition responsive control device

In a control device having a housing means carrying a condition responsive means and an electrical switch to be operated by said condition responsive means, said housing means having a pivotally mounted lever to translate motion from a movable wall of said condition responsive means to said switch and having a range spring means to oppose movement of said movable wall in one direction thereof, an actuator disposed between said movable wall of said condition responsive means and said range spring means and being engageable therewith, said actuator being unitary between said movable wall and said range spring means and carrying a pin that is operatively associated with said lever to cause pivoting movement of said lever as said actuator is moved relative to said housing means, the improvement wherein said lever is substantially L-shaped and thereby defines two arms joined together at an elbow thereof, one of said arms being operatively associated with said pin and said lever being pivotally mounted to said housing means by said one arm at a point remote from said pin.

In a control device having a housing means carrying a condition responsive means and an electrical switch to be operated by said condition responsive means, said housing means having a pivotally mounted lever to translate motion from a movable wall of said condition responsive means to said switch and having a range spring means to oppose movement of said movable wall in one direction thereof, the improvement comprising a movable push rod arrangement movably carried by said housing means and being operatively associated with said lever and said switch to translate motion between said lever and said switch, said switch having a pivot movement different than the pivot movement of said lever, said push rod arrangement having pivot bearing means thereon to compensate for said different pivot movements of said lever and said switch.

In a control device as set forth in claim 11, said socket member being threadedly mounted to said lever so as to be adjustable relative thereto.

In a control device having a housing means carrying a condition responsive means and an electrical switch to be operated by said condition responsive means, said housing means having a pivotally mounted lever to translate motion from a movable wall of said condition responsive means to said switch and having a range spring means to oppose movement of said movable wall in one direction thereof, said housing means carrying adjustable differential means operatively associated with said lever to provide for an adjustable differential of said control device, said housing means carrying snap action biasing means that is operatively associated with said lever to lower said differential of said control device without imposing force to the pivot point of said lever, said biasing means providing lost motion with said lever before the same moves over center, said biasing means comprising a pivotally mounted arm having a free end, said lever having a pair of spaced apart abutment means receiving said free end of said arm therebetween, the improvement wherein said biasing means comprises a C-shaped spring for rendering said arm snap acting.