High pressure gate valve

Details High pressure gate valve High pressure gate valve

2007-01-16

2007-01-16

Bastianelli, John (Department: 3751)

Valves and valve actuation

With means to increase head and seat contact pressure

Gate valve

C251S329000

Reexamination Certificate

active

11096447

ABSTRACT:
A high-pressure gate valve for control of bulk materials includes a main body with an opening for passing bulk material, an upper body, a slideable blade, and lifting structure configured to raise the blade in a planar motion, perpendicular to the primary direction of travel and seal it against the upper body when the blade is extended. An actuating cylinder coupled with a rear edge of the blade extends and retracts the blade. A rear portion of the valve is enclosed to protect the rear edge of the blade, the actuating cylinder, and the coupling between the two.

REFERENCES:
patent: 571880 (1896-11-01), Lunken
patent: 3351180 (1967-11-01), Herzog et al.
patent: 3557822 (1971-01-01), Chronister
patent: 4294427 (1981-10-01), Cilny
patent: 4534540 (1985-08-01), Bragin et al.
Brochure, “DeZurik® KBD Bi-Directional Knife Gate Valves”, SPX Valves & Controls, Bulletin 37.00-2, May 2001 (4 pgs).
Brochure, “L&M Valve”, Tyco Valves & Controls, Bulletin No. LMVMC-0108-US-0110, 2001 (4 pgs).
Brochure, “Rovalve”, Tyco Valves & Controls, Bulletin No. ROVMC-0084-US-0405, 2004 (4 pgs).
Brochure, “Series G Knife Gate Valves”, Red Valve Co., Inc. (2 pgs). This Brochure is believed to have been in publication at least 1 year prior to Apr. 1, 2005.
Brochure, “Fabri-Valve® C/F37 Heavy Duty Knife Gate Valve”, Engineered Valves Group (1 pg). This Brochure is believed to have been in publication at least 1 year prior to Apr. 1, 2005.

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