Variable length shaft assembly

Details Variable length shaft assembly Variable length shaft assembly

1993-05-27

1994-09-20

Rice, Kenneth R.

Land vehicles

Wheeled

Running gear

74492, 464 89, B62D 119

Patent

active

053483456

ABSTRACT:
A variable length shaft assembly including a first shaft having a tubular polygonal end, a second shaft having a correspondingly polygonal solid end telescopically disposed in the polygonal tubular end, an arched spring in a spring chamber in the solid polygonal end having a planar body portion bearing in sliding engagement on a planar wall of the polygonal tubular end and biasing the polygonal solid and tubular ends in opposite directions to a substantially zero clearance relationship in which linear clearances are reduced to substantially zero, and a monolithic plastic block injection molded in situ in the spring chamber behind the flat body portion. After the in situ injection molded plastic solidifies, the monolith plastic block captures the substantially zero clearance relationship between the polygonal solid and tubular ends and encases the arched spring such that the flat body portion thereof defines a reinforced wear plate on the block in sliding engagement on the planar wall of the tubular polygonal end.

REFERENCES:
patent: 3373629 (1968-03-01), Wight et al.
patent: 3457799 (1969-07-01), Lucas et al.
patent: 3473406 (1969-10-01), Runkle
patent: 3685369 (1972-08-01), Adams, III
patent: 4337967 (1982-07-01), Yoshida et al.
patent: 4509775 (1985-04-01), Arndt
patent: 5228720 (1993-07-01), Sato et al.
patent: 5259818 (1993-11-01), Kachi et al.

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