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
Integrated bug tracking and testing
Supply voltage generating circuit and semiconductor device having the same
Polypeptides and immunizing compositions containing gram positive polypeptides and methods of use
Hybrid fin field-effect transistor structures and related methods
Method of isolating human neuroepithelial precursor cells from human fetal tissue
Delivery of captions, content advisory and other data through digital interface
Apparatus and method for transmitting/receiving data in a communication system
  Randomly Featured Patents
Open architecture communications in a gaming network
Radiation image forming unit and cassette
Side-collision air bag device
Detector system using extremely low power to sense the presence or absence of an inert or hazardous fuild
Water resistant cemetitious materials
Digital prepress trapping tools
Non-contact charging module and reception-side and transmission-side non-contact charging apparatuses using the same
Gas compressor
Self-pinned GMR structure by annealing
Electrophotographic organophotoreceptors with novel charge transport compounds