Resources Contact Us Home
Valve and a gas burner

Image Number 7 for United States Patent #7059581.

A valve for supplying fuel gas to a fuel gas appliance comprises a valve housing which defines a valve chamber within which a main carrier member is axially moveable. The main carrier carries a primary and a secondary valving member for co-operating respectively with a primary and a secondary valve seat. A pilot fluid outlet supplies fuel gas to a pilot jet. A stepper motor comprising a rotor and four magnetic coils urges the main carrier between a fully open and closed position. An electro-magnetic coil located in the main carrier magnetically couples primary and secondary end plates to the main carrier. Magnetic decoupling of the primary and secondary end plates from the main carrier permits the main carrier to be urged into the closed position by primary compression springs. The drive transmission comprises a drive shaft from the rotor of the stepper motor and a drive spindle.

  Recently Added Patents
Maltol ether processes and intermediates
Package for product
Toner cartridge
Avirulent oncolytic herpes simplex virus strains engineered to counter the innate host response
Switchgear operating apparatus and three-phase switchgear
Voltage regulator with improved voltage regulator response and reduced voltage drop
Methods of forming integrated circuit packages
  Randomly Featured Patents
Apparatus for driving liquid crystal display
Saw blade container having dual storage areas
System and method for tracing program execution within a processor before and after a triggering event
Thermostatic electric switch and thermal biasing assembly therefor
Ex-vivo priming for generating cytotoxic T lymphocytes specific for non-tumor antigens to treat autoimmune and allergic disease
Reaction product of normal lead beta resorcylate and monobasic cupric salicylate
Active roll control system for a vehicle suspension system
Sprinkler head housing
Safety bag with firm structure
Firmware update network and process employing preprocessing techniques