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
Vehicle fender
Multipoint photonic doppler velocimetry using optical lens elements
System and method for judging success or failure of work of robot
System and method of verification of analog circuits
MOS transistor having combined-source structure with low power consumption and method for fabricating the same
Lithographic apparatus and device manufacturing method
Process for improving the hydrolysis of cellulose in high consistency systems using one or more unmixed and mixed hydrolysis reactors
  Randomly Featured Patents
Hinged component for umbrella
Method and apparatus for lugged strip removal
Method for reducing color migration in multi-layered, caramel colored, gel-based dessert products and the products so produced
Lubricant pressure responsive control circuit
Device for determining the radiation absorption distribution in a three-dimensional examination zone
Dispensing instrument for fluid monitoring sensors
Reservoir and applicator system
Triazine-based compound, method of making the same, and an organic light-emitting device including the same
Coin receiving mechanism having foreign object release device
Dielectric resonator-based electron paramagnetic resonance probe