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
Thin film solar cell and method of manufacturing the same
Disposable electromagnetic energy applicator and method of using it
Replacement metal gate structure and methods of manufacture
Collaborative mapboard system
Microphonics suppression in high-speed communications systems
Device for supporting brake shoes of a drum brake
Automatic engagement of image stabilization
  Randomly Featured Patents
Oligomerization of olefins with BF.sub.3 treated zeolite
Method and apparatus for high resolution holographic imaging of biological tissue
Cholesteric liquid crystal display device and display driver
Temperature monitoring for electrical wires and electrical connection apparatus
Polymeric composition for the absorption of proteinaceous fluids
Apparatus for determining rheological properties
Extrusion die for forming thin-walled honeycomb structures
Hexahydro-trans- and tetrahydropyridoindole neuroleptic agents
Machine and system for processing strip material
Field-emitter fabrication using charged-particle tracks