Valves and valve actuation – Valve – Materials
Patent
1981-01-02
1983-04-26
Chambers, A. Michael
Valves and valve actuation
Valve
Materials
251167, 251175, 251195, 251302, 251328, 137554, F16K 300, F16K 2500
Patent
active
043811000
ABSTRACT:
A gate valve having an expandable valve closure apparatus which is capable of expanding to seal two oppositely located parts in its valve housing. The expandable valve closure apparatus if pivotally mounted for movement on the end of a swing arm member to permit the expandable valve closure apparatus to be moved from its operative position in the vicinity of the ports in the valve housing to its inoperative or stowed position within the valve housing. Expansion of the expandable valve closure apparatus is accomplished by compressed air that is fed into a bellows that forms part of the expandable valve closure apparatus. Contraction of the expandable valve closure apparatus is accomplished by permitting the compressed air to be released from within the bellows and by springs which form part of the expandable valve closure apparatus. Air pressure is also utilized to move the expandable valve closure apparatus from its operative to its inoperative position and from its inoperative to the operative position. The expandable valve closure apparatus employs two belleville type valve closure members that each employ two outer peripheral sealing ridges and an outer peripheral portion that is plated with gold.
REFERENCES:
patent: 3040773 (1962-06-01), McInerney
patent: 3842861 (1974-10-01), Jandrasi et al.
patent: 3973753 (1976-08-01), Wheeler
patent: 4062515 (1977-12-01), Bobo
patent: 4157169 (1979-06-01), Norman
patent: 4198030 (1980-04-01), Jackson et al.
patent: 4244557 (1981-01-01), Polhede et al.
Chambers A. Michael
Fairchild Industries Inc.
York Michael W.
LandOfFree
Valve and valving apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Valve and valving apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valve and valving apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1562583