Spring devices – Vehicle – Leaf
Patent
1997-02-24
1999-04-27
Butler, Douglas C.
Spring devices
Vehicle
Leaf
2989807, 267269, 384548, 384559, 384582, 403282, B25G 328
Patent
active
058971076
ABSTRACT:
A roller bushing assembly (21d, 21e, 21f) designed to enable a low tolerance, frictional fit within an out-of-round or otherwise distorted support member (5, 9) includes a bushing member (29a, 216) having an outer surface (102) machined to provide various axially spaced, annular grooves (127-130, 132 and 242-250). Between or directly adjacent respective ones of the annular grooves (127-130, 132 and 242-250) are defined a plurality of axially spaced and radially extending ribs (113-122 and 232-240). The axial outermost ribs (113, 122 and 240) are preferably elongated relative to the remaining ribs (114-121 and 232-239) and have annularly chamfered portions (124, 125 and 252). The ribs (113-122 and 232-240) are adapted to shear upon mounting of the bushing member (29a, 216) within an out-of-round or otherwise distorted support. By providing the shearable ribs (113-122 and 232-240), the bushing assembly (21d, 21e, 21f) can be effectively mounted within a greater range of varying sized support members. In accordance with a first embodiment, the bushing member constitutes a sleeve (29a) within which is mounted at least one bearing unit (33, 34). The shearing of the ribs (113-122) assures that the bearing unit (33, 34) will not be excessively pre-loaded in a radial direction.
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LeClaire James P.
Zierden Dean
Butler Douglas C.
Horton, Inc.
Kamrath Alan
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