Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Image display device and display unit for image display device
Apparatus and method for an iterative cryptographic block
Wireless communication apparatus, a method of wireless communication, and a program for wireless communication
System and method for agitation of multiple specimen containers
Hydrostatic pad pressure modulation in a simultaneous double side wafer grinder
Methods and systems for creating a tail risk hedge index and trading derivative products based thereon
PLL circuit
  Randomly Featured Patents
Hydraulically-operated percussive device
Child resistant package
ESD protection device
Power supply
Lower tool support for a stamping machine or the like
Writing apparatus for a non-volatile semiconductor memory device
Process for manufacturing an electric circuit intended for firing a pyrotechnic device and the circuit thus obtained
PMOS low drop-out voltage regulator using non-inverting variable gain stage
Thin film analyzer
Apparatus for manufacturing extruded coiled tubes for medical purposes