Dual ball valve air vent valve

Details Dual ball valve air vent valve Dual ball valve air vent valve

2006-11-28

2006-11-28

Keasel, Eric (Department: 3753)

Fluid handling

Line condition change responsive valves

Direct response valves

C137S512000, C137S533110

Reexamination Certificate

active

07140388

ABSTRACT:
A unitary valve housing has an upper and lower portion. The upper portion has an inner chamber for accommodating two spaced apart balls and a cylindrical side skirt with oppositely positioned openings. The lower portion is cylindrical in shape and has a top shelf with adjacent circular openings for seating the two balls and openings communicating with a bottom of the lower portion. The two openings on the upper portion side skirt are aligned with oppositely positioned openings in a side of the lower housing. A secondary shelf is located in the lower housing below each of the two circular openings contiguous with the side openings. A lower end of the lower housing portion is attached to a conduit.

REFERENCES:
patent: 460671 (1891-10-01), Anthony
patent: 1240254 (1917-09-01), Prescott
patent: 1573731 (1926-02-01), Meijer et al.
patent: 4953235 (1990-09-01), Cornwall
patent: 5137049 (1992-08-01), Orlowski
patent: 5499735 (1996-03-01), Chen
patent: 5509445 (1996-04-01), Couet
patent: 5584315 (1996-12-01), Powell
patent: 5653258 (1997-08-01), Schwarz
patent: 5803112 (1998-09-01), Andersson
patent: 5881759 (1999-03-01), Andersson
patent: 6234198 (2001-05-01), Chalich
patent: 6298873 (2001-10-01), LeVey et al.
patent: 6532988 (2003-03-01), Ericson
patent: 6684415 (2004-02-01), Kozono
patent: 6687923 (2004-02-01), Dick et al.

Affiliated with

Also associated with

Rating

Dual ball valve air vent valve does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dual ball valve air vent valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual ball valve air vent valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3633108