Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Casters – Bracket supports
Reexamination Certificate
2000-06-07
2001-12-04
Mah, Chuck Y. (Department: 3626)
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Casters
Bracket supports
C016S044000
Reexamination Certificate
active
06324724
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a caster wheel assembly for a cabinet, particularly a heavy cabinet, wherein side flanges of the caster wheel assembly are attached to the inside corner of the cabinet frame so that forces from dropping the cabinet are transferred to the caster plate thereby minimizing or eliminating damage to the cabinet.
2. Description of the Prior Art
It is well-known in the prior art to attach casters to cabinets. Typical prior art caster assemblies are bolted directly to the cabinet frame through the top plate by a nut and bolt arrangement. However, in this configuration, forces directed to the caster, particularly if the cabinet is dropped, are transmitted directly to the cabinet frame. This causes the cabinet frame, particularly if the cabinet is heavy, to tend to bend or buckle in response to such forces.
OBJECTS AND SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide a caster wheel assembly which can be attached to the frame of a cabinet, particularly a heavy cabinet, so that forces on the caster wheel assembly will tend to be absorbed by the caster wheel assembly rather than transmitted to the frame, thereby reducing or eliminating damage to the frame.
This and other objects are attained by providing a caster wheel assembly wherein the caster plate has two side flanges which are directly coupled to the cabinet frame so that when the cabinet and caster wheel assembly are dropped, the force on the caster wheel assembly will cause the top base plate holding the wheels to bend thereby sustaining and absorbing the force that would otherwise damage the cabinet frame.
REFERENCES:
patent: 331211 (1885-11-01), Osborn et al.
patent: 499783 (1893-06-01), Frank
patent: 742770 (1903-10-01), Wheeler
patent: 2738539 (1956-03-01), Schultz, Jr.
patent: 2738540 (1956-03-01), Kramcsak, Jr.
patent: 3478381 (1969-11-01), Schultz, Jr.
patent: 3639942 (1972-02-01), Ostrom
patent: 4187578 (1980-02-01), Little
patent: 4229855 (1980-10-01), Rowe
patent: 4459920 (1984-07-01), Cwik
Illinois Tool Works Inc.
Mah Chuck Y.
Pitney Hardin Kipp & Szuch LLP
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