Foaming pump with improved air inlet valve

Details Foaming pump with improved air inlet valve Foaming pump with improved air inlet valve

2008-03-04

2008-03-04

Ngo, Lien M. (Department: 3754)

Dispensing

With casing or support

Ambulant

C222S190000

Reexamination Certificate

active

11133176

ABSTRACT:
A piston pump for dispensing foam by simultaneously dispensing air and liquid through a foam generator and in which air to be dispensed is drawn into a chamber from which it is to be dispensed, at least in part, through an air inlet passageway which is different than a flow path out which foam is dispensed. A lost link valve arrangement provides for relative motion to open the air inlet passageway when air is drawn into the chamber and to close the air inlet passageway when air is forced out of the chamber to a dispensing outlet. Preferably, the lost link valve arrangement is provided by a piston carrying an actuator member coaxially slidable thereon to selectively open and close the air inlet passageway.

REFERENCES:
patent: 3627206 (1971-12-01), Boris
patent: 3752370 (1973-08-01), Davenport
patent: 4402432 (1983-09-01), Corsette
patent: 4511065 (1985-04-01), Corsette
patent: 4957218 (1990-09-01), Ford
patent: 5163588 (1992-11-01), Cater
patent: 5207785 (1993-05-01), Knickerbocker
patent: 5271530 (1993-12-01), Uehira et al.
patent: 5348189 (1994-09-01), Cater
patent: 5431309 (1995-07-01), Ophardt
patent: 5445288 (1995-08-01), Banks
patent: 5570819 (1996-11-01), Uehira et al.
patent: 5676277 (1997-10-01), Ophardt
patent: 5813571 (1998-09-01), Gaucher
patent: 5839617 (1998-11-01), Cater et al.
patent: 5899363 (1999-05-01), Bliss, III
patent: 6065647 (2000-05-01), Bliss, III
patent: 6082586 (2000-07-01), Banks
patent: 6206245 (2001-03-01), Bonningue
patent: 6209761 (2001-04-01), Bonningue
patent: 6334549 (2002-01-01), Fernandez
patent: 6409050 (2002-06-01), Ophardt
patent: 6446840 (2002-09-01), Ophardt
patent: 6601736 (2003-08-01), Ophardt et al.
patent: 6763978 (2004-07-01), Pritchett et al.
patent: 6814263 (2004-11-01), Rosenthal
patent: 6923346 (2005-08-01), Foster et al.
patent: 7004356 (2006-02-01), Sayers
patent: 7147133 (2006-12-01), Brouwer et al.
patent: 2002/0070238 (2002-06-01), Pritchett et al.
patent: 2004/0149777 (2004-08-01), Santagiuliana
patent: 2004/0217133 (2004-11-01), Ramet
patent: 2004/0251280 (2004-12-01), Crosnier

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