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Publication numberUST993004 I4
Publication typeGrant
Application numberUS 06/047,403
Publication dateApr 1, 1980
Filing dateJun 11, 1979
Priority dateJun 11, 1979
Publication number047403, 06047403, US T993004 I4, US T993004I4, US-I4-T993004, UST993004 I4, UST993004I4
InventorsFloyd R. French
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Biasing unit for dispensing pump
US T993004 I4
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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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5305922 *Apr 19, 1993Apr 26, 1994Chaim VaronToothpaste dispenser
US5839616 *Aug 14, 1997Nov 24, 1998The Procter & Gamble CompanyBlow molded container having pivotal connector for an actuation lever
US6520385 *Feb 20, 2001Feb 18, 2003L'orealPump including a spring-forming diaphragm, and a receptacle fitted therewith
US6789303Dec 20, 2001Sep 14, 2004Afa Polytek, B.V.Liquid dispenser and assembly methods therefor
US20040222243 *May 3, 2004Nov 11, 2004Saint-Gobain Calmar Inc.Low-cost, in-line trigger operated pump sprayer
EP0598237A2 *Oct 20, 1993May 25, 1994Contico International, IncorporatedTrigger sprayer
EP0598237A3 *Oct 20, 1993Sep 21, 1994Contico Int IncTrigger sprayer.
EP1475160A3 *May 7, 2004Oct 24, 2007Saint-Gobain Calmar Inc.Low-cost, in-line trigger operated pump sprayer
U.S. Classification222/321.8, 222/336
International ClassificationB05B11/00
Cooperative ClassificationB05B11/3015, B05B11/3077, B05B11/3009, B05B11/3076, B05B11/3004
European ClassificationB05B11/30C6, B05B11/30C5, B05B11/30C2, B05B11/30H8D, B05B11/30H8F