Bushing and grease retainer for casters

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

1979-01-29

1980-07-22

Krizmanich, George H.

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Casters

Lubricators

16 38, 16 43, B60B 3300

Patent

active

042132266

ABSTRACT:
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 preferably 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 stem 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 enclosure, 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.

REFERENCES:
patent: 959108 (1910-05-01), Bent
patent: 967085 (1910-08-01), Turner
patent: 2973546 (1961-03-01), Roche

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