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| Number | Title | Issue Date |
| 7170388 | Thermostat A thermostat has a switch, a temperature sensor, a lever, a spring, and a control plate. The sensor generates a force to operate switch in response to the ambient temperature. The lever having an arm turns with the force from the sensor to open/close contacts of the... | 01/30/2007 |
| 5859579 | Current--limiting switch Such switches have current connections for contacts. One contact may be a fixed contact and the other contact may be a mobile contact. A drive opens the mobile contact when a predetermined electric current intensity is exceeded. The electric drive is a th... | 01/12/1999 |
| 5162774 | Remotely setting thermostatic switch assembly and refrigeration system employing same A remotely changeable thermostat for a refrigeration or air conditioning system and method and system employing same. The thermostat has a fluid filled capsule with a diaphragm movably responsive to fluid expansion and contraction for actuating, via lever... | 11/10/1992 |
| 4638148 | Control system and control device for controlling a heating unit and method of making the same A control system and control device for controlling a heating unit and method of making the control device are provided, the control device having a rod and tube temperature sensing unit for providing linear motion of a part thereof along a substantially ... | 01/20/1987 |
| 4532490 | Fail safe high limit control Temperature limit control having a normally closed contact switch secured to a formed cup with vacuum operated formed diaphragm seal to cup bottom, contacts open on reduced vacuum as by boiling thermal fluid in the linear capillary tube welded to the cup ... | 07/30/1985 |
| 4510480 | Thermostat with temperature pull-down facility A thermostatic switch unit for controlling a freezer or, for example, refrigeration apparatus in automotive air conditioning, includes a switch (1) which is acted upon by a thermostat mechanism responsive to the working temperature of the evaporator so as... | 04/09/1985 |
| 4490708 | Condition responsive electric switch system, electrical switching device and method of operation thereof A condition responsive electric switch system comprises switch means which includes at least one set of contact elements defining a preselected open position, a preselected closed position, and a preselected initial contact make-break position, disposed b... | 12/25/1984 |
| 4363015 | Condition responsive electrical switch construction and parts and methods therefor A condition responsive electrical switch construction having a frame carrying an electrical switch and a condition responsive device having a movable wall for causing movement of a lever that is pivotally carried by the frame and is operatively associated... | 12/07/1982 |
| 4242571 | Electro-thermal linear pull actuator A linear pull actuator converts working fluid such as halogenated hydrocarbons into vapor by electrical heating element housed inside a shell, generating a vapor pressure against a rolling membrane secured inside actuator so as to respond to the vapor pre... | 12/30/1980 |
| 4160225 | Temperature responsive control device with improved hydraulic diaphragm A temperature responsive control device is provided for controlling an electric oven. The device is comprised of a housing which contains an electrical switching means which is controlled by a temperature sensitive expansible member through a snap-acting ... | 07/03/1979 |
| 4082929 | Electric switch actuated in dependence on pressure, particularly an evaporator thermostat for refrigerators The invention relates to an electric switch assembly of the type operated by a thermostatic bellows, for use on refrigerators. The operating bellows is part of a system having a liquid/vapor filling and the movement of the bellows operates a microswitch. ... | 04/04/1978 |
