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Dispensing apparatus

  • US 6,220,487 B1
  • Filed: 10/15/1999
  • Issued: 04/24/2001
  • Est. Priority Date: 10/16/1998
  • Status: Expired due to Fees
First Claim
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1. A dispensing pump comprising:

  • A. a sleeve having first and second ends and first and second spaced apertures through a side thereof, B. a valve mounted for rotation internally at a first end of said sleeve with first and second ports for alignment with said first and second apertures in first and second angular positions of said valve, respectively, C. a piston mounted at the other end of said sleeve for longitudinal motion between a first position abutting said valve and a second position displaced from said valve, and D. control means for rotating said valve and displacing said piston thereby to dispense a material from one of said spaced apertures.

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