Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Casters – Spring supported
Patent
1993-04-22
1995-03-28
Larson, Lowell A.
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Casters
Spring supported
16 20, B60B 3300
Patent
active
054004691
ABSTRACT:
The legs of a swivel caster assembly horn are mounted to a pair of horizontally-spaced beam plates which are pivoted to the legs ahead of the swivel axis. The caster wheel is mounted on an axle behind the swivel axis. A pair of urethane springs is mounted to the horn legs ahead of the pivot axis. A bolt across the front ends of the beams receives collars, each collar having a threaded transverse aperture which is screwed onto threads on the lower ends of bolts whose upper ends have heads with flanges which bear downward on a spring cap plate bearing downward on the tops of the springs, whereby the load on the caster horn is applied by lever action to the springs which are pre-loaded by the collars screwed onto the bolts.
REFERENCES:
patent: 2040121 (1936-05-01), Bowen
patent: 2442831 (1948-06-01), Suttles
patent: 2707795 (1955-05-01), Skupas
patent: 4462138 (1984-07-01), Black
patent: 4485521 (1984-12-01), Welsch et al.
patent: 4559669 (1985-12-01), Bonzer et al.
patent: 4575896 (1986-03-01), Nakao et al.
patent: 4685174 (1987-08-01), Hager
patent: 4763910 (1988-08-01), Brandli et al.
patent: 4923346 (1990-05-01), Hager
patent: 5347680 (1994-09-01), Rippe
FKI Industries Inc.
Gurley Donald M.
Larson Lowell A.
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