Bushing and grease retainer for casters

Details Bushing and grease retainer for casters Bushing and grease retainer for casters

B - Operations, Transporting

60

B

16/11

B60B 33/00 (2006.01)

Patent

CA 1120217

BUSHING AND GREASE RETAINER FOR CASTERS ABSTRACT OF DISCLOSURE This invention relates to a pivot bushing for casters and in which the stem for associating the caster with an article it is to support, is mounted. The bushing pre- ferably is non-metallic and fits into the caster stem mount with a close fit for at least a portion of its depth with a clearance fit in the lower area where the system must pass beyond an annular shoulder in the bushing for retention. The bushing has a fully closed lower end for retaining grease used to lubricate the stem for rotation in the bushing. The upper end of the bushing includes an integral cap-like en- closure, or shroud, which overlies the top end of the tube for mounting the bushing and stem in a caster and which lends a finished appearance in this area. A vertical exterior bead on one side of the bushing serves to engage a seam in the mounting tube to position the bushing properly relative to the caster.

343760

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