Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Edward F. Csaszar0
Date of Patent
February 2, 2016
Patent Application Number
13308630
Date Filed
December 1, 2011
Patent Citations Received
Patent Primary Examiner
Patent abstract
Airless pump dispensers for various fluids are disclosed including an airless pump mounted in a housing, a movable piston mounted for moving within the housing starting at the bottom thereof, a dispenser at the top of the housing for receiving fluid from the airless pump and dispensing it, and a spring disposed at the bottom of the housing in contact with the bottom of the movable piston and having an insufficient driving force to independently move the movable piston within the housing when the housing contains the fluid.
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