F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
251/54
F16K 5/04 (2006.01) F16K 5/06 (2006.01)
Patent
CA 1209563
ABSTRACT OF THE DISCLOSURE: A ball valve having a ball provided with two pivots located in bearings, and a key on a control stem for operating the ball, the distal end of the key being inserted into a recessed seat provided in one of the two pivots of the ball. The recessed seat comprises two generally circularly cylindrical cavities in which are idly located respective joint pieces which are generally circularly cylindrical apart from a slot in each joint piece. The distal end of the key comprises two elongate portions of the key which are inserted in the respective slots of the joint pieces, the arran- gement being such that, in use, rotation of the key causes each elongate portion of the key to urge its respective joint piece against a respective arcuate wall portion which partially defines one of the cavities, thereby. tending to cause rotation of the ball.
410594
Nuovopignone - Industrie Meccaniche E. Fonderia S.p.a.
Robic Robic & Associes/associates
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