Check valve assemblies and related methods

Fluid handling – Processes

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C137S112000, C137S512000, C137S512300

Reexamination Certificate

active

07740023

ABSTRACT:
Check valve assemblies and related methods are described. A valve assembly comprises a housing having at least a first inlet passage and an outlet passage. A flow channel is disposed within the housing, with at least a portion thereof extending inward from the first inlet passage. A first check member is disposed within the first inlet passage and is movable along the flow channel between a closed position in which the first check member is disposed against a first valve seat and an open position in which the first check member is spaced from the first valve seat. In varying examples, movement of the first check member from the closed position to the open position is unopposed. Optionally, the housing can include at least a second inlet passage wherein a second check member is disposed. In an example, the second check member is continuously biased toward a closed position.

REFERENCES:
patent: 1056735 (1913-03-01), Buckingham
patent: 2809659 (1957-10-01), Gillespie et al.
patent: 4291719 (1981-09-01), Lehmann
patent: 4412792 (1983-11-01), LaBorde et al.
patent: 4642184 (1987-02-01), Liepse
patent: 4831839 (1989-05-01), Anderson et al.
patent: 4953588 (1990-09-01), Sands
patent: 5207242 (1993-05-01), Daghe et al.
patent: 5249511 (1993-10-01), Shumate et al.
patent: 5839360 (1998-11-01), Williams
patent: 5893360 (1999-04-01), Stoumen et al.
patent: 5964258 (1999-10-01), Schoenbauer
patent: 5979498 (1999-11-01), Zenker et al.
patent: 6330852 (2001-12-01), Williams et al.
patent: 6349736 (2002-02-01), Dunmire
patent: 6378420 (2002-04-01), Savage et al.
patent: 6470420 (2002-10-01), Hospodor
patent: 6470794 (2002-10-01), Takahashi
patent: 6779543 (2004-08-01), Hollister et al.
patent: 6964163 (2005-11-01), Landhuis
patent: 6971401 (2005-12-01), Carpenter
patent: 2004/0134537 (2004-07-01), Noll et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Check valve assemblies and related methods does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Check valve assemblies and related methods, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Check valve assemblies and related methods will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4208712

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.