Resources Contact Us Home
Metering pump

Image Number 4 for United States Patent #4415314.

A fluid pump for location within a reservoir and which is operable with rise and fall of liquid within the reservoir. The pump comprises a tube of a resiliently deformable material, an abutment surface which is engaged by the tube and a float device which is mounted to the tube. Liquid entering the reservoir causes upward movement of the float device and such movement of the float device causes increasing engagement between the tube and the abutment surface. The increasing engagement between the tube and the abutment surface causes the tube to deform resiliently and a localized reduction in the contained volume of the tube is thereby effected to cause expulsion of fluid from the tube. Conversely, as the liquid level falls in the reservoir, the float device moves downwardly to reduce the extent of engagement between the tube and the abutment surface, so that the tube tends to resume its initial contained volume.

  Recently Added Patents
Method and apparatus for eliminating a motor vehicle tip-over risk
Tone enhancement bracket
Liquid-filled protein-phosphatidic acid capsule dispersions
Flip-chip mounting resin composition and bump forming resin composition
Architectural panel with bamboo rings light density embossed surface
Stable nanoemulsions for ultrasound-mediated drug delivery and imaging
Automatic setup of reflector instances
  Randomly Featured Patents
Apparatus for storing separating and filling coffee filters
Data capture and recording device
Optical disc signal recording method and optical disc apparatus
Chair bottom cover
Method for processing a hardware independent user description to generate logic circuit elements including flip-flops, latches, and three-state buffers and combinations thereof
Method and system for storing and processing multiple memory addresses
Optimized JTAG interface
Insertion of compressible sheets in concrete
Selective voltage and current control for high voltage D.C. transmission systems
Lock mechanism device