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
Biosensor kit
Sensing during magnetic resonance imaging
Leg stretching device
Mobile terminal and method for changing page thereof
Calibration device and related method for phase difference between data and clock
Circuit for and method of enabling communication of cryptographic data
Printed circuit board including electromagnetic bandgap structure
  Randomly Featured Patents
Reel-driving device for a videocassette recorder
Roll feed with modular roll lifter mechanism
Method and apparatus for backspill prevention
Bread maker
Operation panel for an electronic copying machine
Continuously operating press for manufacture of panels, such as chipboards, fiberboards, or the like
Timing control circuit for lossless switching converter
Protection member for coupling device
Phospholink nucleotides for sequencing applications
Two-step step stool