Resources Contact Us Home
Single-acting, gas-operated pump

Image Number 3 for United States Patent #4828465.

A single-acting, gas-operated, pump method and apparatus including a pump body having a main chamber divided by a reciprocating piston assembly into a gas driving chamber and a liquid pumping chamber, a spring for biasing the piston assembly into one of its two end positions, a reciprocating control valve controlling the flow of driving gas to and from the gas driving chamber, a snap-acting spring mechanically coupling the control valve to the reciprocating movement of the piston assembly, and a counteracting spring for biasing the control valve toward one of its two positions.

  Recently Added Patents
Instrumenting configuration and system settings
Sign language keyboard and sign language searching apparatus using the same
Personalized health communication system
Light emitting device and electronic device
Electronic flash device
Printing apparatus and method of operation of a printing apparatus
Using network labels without standard-defined syntax and semantics
  Randomly Featured Patents
Reaction arrestment mixer head and mixing process
Low profile mine roof support
Magnetic field change detection circuitry having threshold establishing circuitry
Cleaning lance machine
Aperture stop assembly for a laser beam optical system
Lifestyle optimization and behavior modification
Systems, methods and computer program products for applications traffic based communications network performance testing
C(10) ethyl ester and C(10) cyclopropyl ester substituted taxanes
Bottle with top loading resistance with front and back ribs
Film winding mechanism