Caster structure for cases

Details Caster structure for cases Caster structure for cases

1997-04-14

1998-10-06

Mah, Chuck

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

Casters

Wheels

16 18B, 16 18R, A47B 9100

Patent

active

058158855

ABSTRACT:
A caster structure for cases including a coupling frame and a plurality of rollers. The coupling frame is comprised of a curved plate and two protective covers extending from the lateral edges of the bottom side of the plate such that they define a clearance therebetween. The rollers are pivotally mounted on the protective covers in the clearance. The outer circumferences of every two adjacent rollers form a level line and may come into contact with the ground surface simultaneously to facilitate pulling and provide a steadier movement.

REFERENCES:
patent: 849527 (1907-04-01), Bowers
patent: 887821 (1908-05-01), Lang
patent: 954993 (1910-04-01), Peters
patent: 1066754 (1913-07-01), Rison

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