Resources Contact Us Home
Thermostatic electric switch and thermal biasing assembly therefor

Image Number 2 for United States Patent #4591820.

A housing has a switch chamber in which an electric switch is placed and a recess in which is received a snap acting, thermally responsive disc which actuates and deactuates the switch upon snapping from one configuration to another. A drop in thermal biasing assembly used to modify the operating temperature of the disc has a pair of cylindrical film type resistors electrically connected in parallel circuit relation and physically connected to a pair of connectors. An assembly having resistors of a rating chosen for a particular application is dropped into the recess before the disc is assembled, the connectors sliding into matching bores formed in the housing. The connectors are attached to suitable terminals and the disc is then placed over the thermal biasing assembly to provide a multiple temperature operating thermostat.

  Recently Added Patents
Automatic detection of image degradation in enhanced vision systems
Mineral, nutritional, cosmetic, pharmaceutical, and agricultural compositions and methods for producing the same
Modular authoring and visualization of rules using trees
Methods and apparatus for monitoring communication through identification of priority-ranked keywords
Data unit receiver and sender control method
Programming method of non-volatile memory device
Pharmaceutical treatment process using chitosan or derivative thereof
  Randomly Featured Patents
Method for checking the plausibility of the position of the clutch actuator of a clutch, method for determining the touch point of a clutch, and device for carrying out the method
Antifoaming additive for acid liquids
Poke-through connector assembly
Fuel injection system
Angle converter
Pattern inspection method and apparatus using electron beam
Method for producing a thermoplastic polymer material
Active matrix LCD having a non-conductive light shield layer
Method and apparatus enabling synchronous transfer mode, variable length and packet mode access for multiple services over a broadband communication network
Selective transmission of an email attachment