Quick change check valve system

Details Quick change check valve system Quick change check valve system

2011-03-01

2011-03-01

Lee, Kevin L (Department: 3753)

Fluid handling

Processes

Cleaning, repairing, or assembling

C137S015190, C137S315110, C137S539000

Reexamination Certificate

active

07896021

ABSTRACT:
A system for quickly removing and installing check valve parts without disturbing system piping attached to a pump. The system includes a first adapter attached to the outlet of the pump head. The first adapter includes a valve seat and a housing with a side wall having external threads. A second adapter includes a hollow body with a space for a check valve. The body has an opening in the side wall for inserting the check valve. The second adapter fits over the first adapter and the adapters are attached by means of a collar. Tightening the collar onto the threads on the first adapter causes the check valve to be held firmly between the valve seat and the top wall of the second adapter.

REFERENCES:
patent: 4336824 (1982-06-01), Steineman
patent: 4471802 (1984-09-01), Pryor
patent: 5143117 (1992-09-01), Klein
patent: 6478047 (2002-11-01), Powell
patent: 6910494 (2005-06-01), Warsakis
patent: 2003/0089403 (2003-05-01), Duncan et al.
patent: 2004/0134537 (2004-07-01), Noll et al.
patent: WO0188417 (2001-11-01), None
International Preliminary Report on Patentability from International Application No. PCT/US2008/004206 dated Oct. 8, 2009; Pulsafeeder, Inc. et al.

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