Castor that is operated smoothly and conveniently
OwnerPo-Chuan Tsaiinventor
Life of this patent
Estimating the term…
Abstract
A castor includes a main body, two rollers, a plurality of rolls, two retaining members, and two covers. Thus, the rolls are rotatably mounted between the main body and the respective roller, so that each of the rollers is rotatable on the main body smoothly. In addition, the rolls and the rollers are made of the same material to reduce the friction between the rolls and the rollers during rotation of the castor, so that the rolls and the rollers are not easily worn out during a long-term utilization. Further, the rollers are covered by the covers so that only the through hole of the main body is exposed outwardly from the covers and the rollers, thereby enhancing the aesthetic quality of the castor.
Claims19
A castor, comprising:
- a main body having two opposite mounting portions;
- an upright post pivotally mounted on the main body;
- two rollers each rotatably mounted on a respective mounting portion of the main body;
- a plurality of rolls rotatably mounted between a respective mounting portion of the main body and a respective roller;
- two retaining members each secured on a respective mounting portion of the main body and each rested on a respective roller to retain the respective roller on the respective mounting portion of the main body;
- two covers each mounted on a respective roller to cover the respective roller;
- wherein each of the rollers has a first side formed with a plurality of substantially arc-shaped rolling grooves to receive the rolls.
Dependencies are inferred from the claim text.