F - Mech Eng,Light,Heat,Weapons – 16 – D
Patent
F - Mech Eng,Light,Heat,Weapons
16
D
192/6
F16D 27/10 (2006.01) F16D 27/118 (2006.01) F16D 43/206 (2006.01)
Patent
CA 1119537
Abstract An electromagnetically operated friction clutch is disclosed of the type including an axially movable armature member which is drawn into frictional driving engagement with a friction surface on an inner body to establish drive through the clutch, in which a torque overload deenergization of the electromagnetic coil is provided. The clutch is provided with a torque boosting arrangement in which drive from the axially movable armature is transmitted through the series of balls disposed in corresponding pockets formed in a radial face of the armature and an opposing radial face of a clutch element drivingly connected to one of the primary clutch members. The action of the balls in the pockets creates a torque boosting effect increasing the engagement pressure exerted on the frictional engagement surfaces. The torque overload release arrangement includes a mounting of the clutch element In axially and rotationally restrained by means of a spring element. The axial movement of the clutch element against the spring bias In response to the transmission of a particular level of torque is employed to sense a torque overload condition, and by positioning a microswitch activated by a predetermined extent of axial movement of the clutch element, the electromagnetic coil is deenergized at a predetermined torque level. The clutch may be reenergized at high speed by a manual switch reenergizing the coil relay, drawing the friction surfaces into engagement.
338238
Facet Enterprises Inc.
Marks & Clerk
LandOfFree
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