Hollow ball valve assembly

Details Hollow ball valve assembly Hollow ball valve assembly

2008-04-01

2008-04-01

Rivell, John (Department: 3753)

Fluid handling

Processes

Cleaning, repairing, or assembling

C137S315330, C137S539000, C137S533110

Reexamination Certificate

active

07350534

ABSTRACT:
Apparatus and methods for constructing a valve comprising a sealing member and a hollow ball operable to sealingly engage the sealing member. A guide housing disposed about said hollow ball and does not constrain rotation of said hollow ball. A spring is disposed between the hollow ball and the guide housing so as to bias the hollow ball into sealing engagement with the sealing member. The hollow ball is constructed from two unequal sized portions and may comprise a hollow, spherical body having an aperture and a plug sized so as to closely fit within the aperture.

REFERENCES:
patent: 3602176 (1971-08-01), Helbig
patent: 3742975 (1973-07-01), Kazama et al.
patent: 3776255 (1973-12-01), Fujiwara
patent: 4535800 (1985-08-01), Leech
patent: 5061159 (1991-10-01), Pryor
patent: 6155806 (2000-12-01), Andel
patent: 2005/0121084 (2005-06-01), Andersson
patent: 2292577 (1976-06-01), None
patent: 06185643 (1994-07-01), None
EPO Search Report for Appln. No. 06250593.8 dated Jun. 2, 2006; (pp. 4).

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