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Biasing unit for dispensing pump
T993004 Biasing unit for dispensing pump
Patent Drawings:Drawing: T993004-2    Drawing: T993004-3    
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(2 images)

Inventor: French
Date Issued: April 1, 1980
Application: 06/047,403
Filed: June 11, 1979
Inventors: French; Floyd R. (Manchester, MO)
Primary Examiner:
Assistant Examiner:
Attorney Or Agent:
U.S. Class: 222/321.8; 222/336
Field Of Search:
International Class: B05B 11/00
U.S Patent Documents:
Foreign Patent Documents:
Other References:

Abstract: An elastomeric biasing unit for a manually operated dispensing pump of the type including a hollow, stationary piston and reciprocable piston cylinder coaxially disposed about the piston and cooperating therewith to define a variable volume pump chamber. The biasing unit, which urges the piston cylinder outward to a position of maximum pump chamber volume, has an open end in operative association with the piston cylinder and a generally closed end, providing a component of the inlet check valve, in operative association with the piston.
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