Key device for locking an element to a shaft

Details Key device for locking an element to a shaft Key device for locking an element to a shaft

1981-12-11

1983-02-15

Kundrat, Andrew V.

Joints and connections

Including ancillary means blocking disconnection of joint

Blocker for assembled joint retainer

403358, F16D 106

Patent

active

043738311

ABSTRACT:
A key device for locking an element to a shaft for rotation therewith includes a key-engaging surface on the shaft which is provided with first and second opposite ends and angles radially inwardly toward the shaft axis. The first end of the key-engaging surface is located at the shaft periphery, and the shaft is provided with a radially extending shoulder at the second end of the key-engaging surface. An element to be secured to the shaft has a shaft-receiving opening which receives that portion of the shaft having the key-engaging surface. The element is provided with an outer side and a radially extending keyway which opens through the shaft-receiving opening in registry with the key-receiving surface. The keyway is provided with a rear cam surface which extends angularly from the outer side of said element at a point radially spaced outwardly from the shaft-receiving opening to the shoulder on the shaft. A key is received by the keyway, and is provided with a follower surface engaged with said cam surface and a first side portion engaged with said key-engaging surface. A threaded fastener secured to one of said elements and shaft is engaged with a second side portion of the key for retaining the key in the keyway and forcing it into engagement with the key-engaging surface.

REFERENCES:
patent: 2676849 (1954-04-01), Houck et al.
patent: 3424019 (1969-01-01), Wolfram
patent: 3513802 (1970-05-01), Potter
patent: 3994604 (1976-11-01), Visser

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