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

Image Number 3 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
Liquid crystal display and manufacturing method thereof
Method and system of channel detecting and reporting, terminal, and management center
Semiconductor memory device
Printed circuit board including electromagnetic bandgap structure
Storage device, data processing device, registration method, and recording medium
Portable hand-held multi-function device for storing, managing and combining rewards
Solid state lighting devices with cellular arrays and associated methods of manufacturing
  Randomly Featured Patents
Textured spa basin
Camera with adjustment and recording of color temperature
Sputter-coating system, and vaccuum valve, transport, and sputter source array arrangements therefor
Process for the preparation of heat-resistant coatings on wires or fibres and a suitable device for performing the same
Optically active (R)-1-(4-trifluoromethylphenyl)ethylamine
Disk initialization method
Method and apparatus for storing data and method for reading data
Multi-layer composite vehicle headliner substrate with HIC provisions
Content addressable memory having longest prefix matching function
Dental prophylactic device