Dual set point temperature switch

A dual set point temperature switch comprising:

• a housing;
• a switch disposed within the housing movable from a first state to a second state in response to an actuating force FA;
• an actuator positioned within the housing, the actuator including a cup defining a reservoir filled with thermally responsive wax and a guide comprising a plug, a piston, a force transfer extension and a return spring, an exterior of the cup adjustably fastening to an interior of the housing;
• a force buffer comprising a bias spring housed within a container having a base and an opening,
• wherein, the force buffer is intermediate the switch and said actuator, the thermally responsive wax of said actuator responds to an increase in temperature ΔT1 and expands causing the actuator to extend in a first direction compressing the bias spring of said force buffer, at temperature T1 the force buffer applies the force FA on the switch moving said switch from the first state to the second state,
• wherein, the position of the cup is axially adjustable relative to the housing to calibrate T1.

A dual set point temperature switch comprising:

• a housing having a first end and a second end;
• an actuator disposed within the housing, the actuator including a cup filled with thermally-responsive wax for actuating a switch, an exterior of the cup having threads for adjustably fastening to complementary threads on an interior of the housing, said first and second ends of the housing being potted and sealed;
• the switch movable from a first state to a second state;
• a force buffer intermediate said actuator and said switch,
• wherein, said actuator responds to an increase in temperature ΔT1 and extends in a first direction, extension in the first direction applies force on the force buffer and at temperature T1 the force buffer transmits an actuating force FA on the switch moving said switch from the first state to the second state,
• wherein, the position of the cup is axially adjustable relative to the housing to calibrate T1 and after calibration of T1 the first and second ends of the housing are potted and sealed so that the position of the cup is no longer axially adjustable.