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
System and method for interactive image-based modeling of curved surfaces using single-view and multi-view feature curves
Quinazoline compounds and their use in perfume compositions
Device for transmitting data between a serial data bus and working modules such as actuator modules and/or I/O modules
Process for the production of an acylation catalyst
Position pointer, variable capacitor and inputting apparatus
Optical imaging device and imaging method for microscopy
High-density fiber optic modules and module housings and related equipment
  Randomly Featured Patents
Lipolytic enzymes
Process for the selective additive correction of voids in copying layers
Sanitary napkin
Optical wavelength multiplexing device, optical wavelength dividing device, optical wavelength dividing multiplexing device, and method of controlling optical band-pass filter
Apparatus and method for mounting orthodontic appliances to teeth
Method and apparatus for generating an adaptive power supply voltage
Ballistic resistant devices and systems and methods of manufacture thereof
Fluid storing and dispensing
Air sparging/soil vapor extraction apparatus
Biosensor with code pattern