Fully drainable weir valve

Details Fully drainable weir valve Fully drainable weir valve

2005-08-02

2005-08-02

Lee, Kevin (Department: 3753)

Fluid handling

Processes

Cleaning, repairing, or assembling

C137S315070, C251S331000

Reexamination Certificate

active

06923198

ABSTRACT:
A fully draining valve including an upper valve portion and a lower valve portion. The lower valve body has an integral weir, which in conjunction with a resilient diaphragm, defines a fluid passage. The weir axis is sloped from a horizontal plane. A first duct axis is sloped downwardly away from the weir and sloped from the horizontal plane. A second duct axis is sloped downwardly away from the weir and sloped from the horizontal plane. A third duct axis is oriented downwardly away from the weir and substantially parallel to a vertical axis such that substantially all liquid from within the fluid passage drains from the valve by gravity.

REFERENCES:
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patent: 4917357 (1990-04-01), Danko
patent: 4968003 (1990-11-01), Danko
patent: 4977929 (1990-12-01), Chinnock et al.
patent: 5065980 (1991-11-01), Pedersen
patent: 5160117 (1992-11-01), Besombes
patent: 5222523 (1993-06-01), Trimble
patent: 5227401 (1993-07-01), Hanson et al.
patent: 5277401 (1994-01-01), Butler et al.
patent: 5297328 (1994-03-01), Reimers et al.
patent: 5327937 (1994-07-01), Kato et al.
patent: 5439197 (1995-08-01), Itoi et al.
patent: 5971025 (1999-10-01), Backlund
patent: 6289933 (2001-09-01), Fischer

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