Resources Contact Us Home
Mixing rotary positive displacement pump for micro dispensing

Image Number 6 for United States Patent #8469231.

A dispensing apparatus, which is capable of delivering precise quantities of a liquid product less than one mm.sup.3 in size, includes a drive mechanism, a housing made up of at least two input channels coupled to a chamber made up of a first portion and a second portion. First and second component liquids are delivered via the first and second input channels respectively to the chamber and the first and second input channels are disposed so that interaction is hindered between the first component liquid and the second component liquid in either input channel. At least one feed screw with a helical thread is disposed in the chamber such that when the at least one feed screw is rotated by the drive mechanism the first and second component liquids are mixed to form a liquid product and the feed screw rotation also discharges the liquid product from the chamber.

  Recently Added Patents
Method for remotely measuring fluctuations in the optical index of refraction of a medium
Methods and apparatus for preserving privacy in an RFID system
Lighting control device and lighting control method
Navigation apparatus, search result display method, and graphical user interface
Device for producing a connection grid with an integrated fuse
Tread portion of an automobile tire
Method for computing an energy efficient route
  Randomly Featured Patents
Dosage device
Ground water sampling device
Throttle control system for internal combustion engine
System and method for providing communication between ultrasound scanners
Coding rate reduction for turbo codes
Electronic hub odometer
Adhesive varnish to receive powdered pigments
Method and apparatus for maintaining a load raising linkage in a rasied position
Tile saw apparatus
Composite flexible joint