Gate valve

Details Gate valve Gate valve

2005-09-13

2005-09-13

Yu, Justine R. (Department: 3751)

Valves and valve actuation

Reciprocating valve

Gate

C251S366000, C137S015230

Reexamination Certificate

active

06942194

ABSTRACT:
The invention relates to a gate valve with a housing, having an inlet and an outlet, between which a flow area is arranged, with a sealing insert in the flow area and a sliding element cooperating with a contact area of the sealing insert in the closed state. In a gate valve of this kind, the function must be improved. For this purpose, the sealing insert has a rigid body, which is permanently connected with at least one additional area with a lower rigidity.

REFERENCES:
patent: 2934313 (1960-04-01), Allen
patent: 3331582 (1967-07-01), Ford
patent: 3765647 (1973-10-01), Grove et al.
patent: 4009727 (1977-03-01), Bailey
patent: 4703915 (1987-11-01), King
patent: 4881719 (1989-11-01), Bowman
patent: 5279320 (1994-01-01), Freudendahl
patent: 5335910 (1994-08-01), Tanzer et al.
patent: 5560587 (1996-10-01), McCutcheon et al.
patent: 43 25 192 (1994-02-01), None
patent: 0 809 054 (1997-03-01), None
patent: 0 943 850 (1999-09-01), None
patent: 762830 (1954-11-01), None

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