F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
137/87
F15B 13/01 (2006.01) F16K 31/10 (2006.01) F16K 35/02 (2006.01)
Patent
CA 1141260
POWER TRANSMISSION Abstract of the Disclosure A magnetic detent housed in an end cap adapted for mounting to a hydraulic control valve having a reci- procally actuated spool movable from a neutral to a det- ented position. The magnetic detent including a spool extension formed with a detent groove and slidably sup- ported in a retainer mounting a plurality of radially movable balls. A centering spring exerting a biasing force for urging the extension to the neutral position. A clapper movably mounted on and in driving contact with the balls and spaced from a magnet member generating a magnetic force. A spring member exerting a relatively light pre-load force for urging the balls against the per- iphery of the extension and driving the clapper into mag- netically held contact with the magnet member. The pre- load and magnetic forces combining to form a detenting force locking the balls against the biasing force of the centering spring. The biasing and pre-load forces com- bining to form a shifting force resisting movement of the extension from the neutral position. i.
363028
Marks & Clerk
Sperry Corporation
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