B - Operations – Transporting – 25 – G
Patent
B - Operations, Transporting
25
G
64/20
B25G 3/00 (2006.01) F16D 1/00 (2006.01) F16D 1/116 (2006.01)
Patent
CA 1261641
ABSTRACT An improved quick disconnect mechanism between a rotatable end yoke hub of a power take-off and a journal shaft is disclosed. The hub has a central longitudinal passageway formed therethrough which is co-axial with the axis of rotation. An aperture is formed completely through the hub in a direction which is generally perpendicular to the longitudinal axis of the hub. The aperture extends at least partially through the passageway formed in the hub. One end of the aperture is formed with a reduced diameter portion, while an end plug is inserted through the other end of the aperture so as to close it. The end plug includes a body portion sized to fit within the aperture and a head portion sized larger than the aperture. The body portion includes an enlarged diameter portion formed thereon which is slightly larger than the inner diameter of the aperture so as to be frictionally engaged thereby. The enlarged diameter portion may be formed as a circumferential projection, or alternatively as a thread. The head portion of the end plug is formed integrally with the body portion to permit rotation thereof during and after insertion. The enlarged diameter portion cuts a shallow groove in the hub during such rotation to securely retain the end plug therein. Prior to installing the end plug, a locking pin is slidably disposed in the aperture. The journal shaft is provided with a groove in the exterior surface thereof to receive the locking pin therein. When the locking pin is inserted through the hub aperture and the journal shaft groove, it prevents the removal of the journal shaft from the hub. The locking pin includes a recessed portion which, when aligned with the groove, permits the journal shaft to be removed from the hub. A spring is provided to urge the locking pin to a position wherein the recess therein is not aligned with the journal shaft groove, thus normally preventing the removal of the journal shaft from the hub. The portion of the slidable locking pin which extends outwardly from the hub is inclined (relative to the radii of the hub and journal shaft) in a direction away from the direction of rotation of the hub.
522954
Butler Christopher C.
Simpson John D.
Smart & Biggar
Walterscheid Agmaster Inc.
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