F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
251/73
F16K 3/30 (2006.01) F16K 3/00 (2006.01) F16K 31/50 (2006.01)
Patent
CA 1227781
GATE VALVE ABSTRACT OF THE DISCLOSURE A gate valve comprising a valve casing having a valve chamber therein, a valve body moving up and down in the valve chamber so as to open and shut a valve passage, and a spindle engaged with the valve body and moving up and down in accordance with rotation of a handle so that the valve body moves up and down in the valve chamber. A cover is mounted above the valve chamber so as to seal and isolate the valve chamber. An upper threaded portion of the spindle passes through the cover. A guide ring having projections therearound is attached to the spindle. The projections of the ring are fitted into vertical lead grooves arranged on the inner wall of the cover.
446305
Ogawa Hirotoshi
Sano Nichiro
Asahi Yukizai Kogyo Co. Ltd.
Mcfadden Fincham
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