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
Wireless control system for a patient support apparatus
Nitrogen and hindered phenol containing dual functional macromolecular antioxidants: synthesis, performances and applications
System and method for storing redundant information
Modified continuous phase modulation communications system and related methods
Distributive data capture
Dynamic data filtering system and method
Method of fabricating CIGS by selenization at high temperature
  Randomly Featured Patents
Keyed communication plug
High volume conveyor accumulator for warehouse
Airbag storing casing
Music jukebox
Multi-state NROM device
Semiconductor optical element and integrated semiconductor optical element
Method of sensing current position in position control system
Process to convert propane into ethylene propene and C.sub.4 olefins
Bandwidth management apparatus
Method for controlling data write to virtual logical volume conforming to thin provisioning, and storage apparatus