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A castor

A technology of casters and bearings, which is applied in the direction of casters, wheels, wheel bearings, etc., and can solve the problem that casters cannot rotate freely around their vertical axes

Inactive Publication Date: 2005-12-14
大卫·哈克特
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These difficulties are mainly caused by the fact that the casters cannot rotate freely about their vertical axes

Method used

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Examples

Experimental program
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Embodiment Construction

[0020] Referring to FIG. 1 , there is provided a caster wheel 10 mounted on a transverse shaft 11 extending between a pair of lugs 12 of a fork 13 .

[0021] The cross plate 14 at the top of the fork is bolted to the first upright 16 via a thrust bearing 15 with ball races 15a, 15b, the shank of which extends up through the whole bearing assembly to be secured by a self-locking nut.

[0022] The term "thrust bearing" refers to a bearing in which, in use, the load imposed on it in the axial direction relative to the bolt 17 is borne by its balls or rollers.

[0023] Surrounding the bolt shank 17 within the first part is a first concentric ball or roller journal bearing 20 having an inner race 20a and an outer race 20b. Thus, the fork 13 is free to rotate on the bearing 15 about the vertical axis of the bolt 17 relative to the first upright 16 , which is also free to rotate on the bearing 20 about the axis of the bolt 17 .

[0024] The term "neck bearing" refers to a bearing in...

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PUM

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Abstract

Castor for shopping and hospital trolleys, which provides enhanced cornering and maneuverability of the trolley, wherein the fork (13) of the castor is on the first bearing relative to the first part connected to the fork (16) is free to rotate, and the first part (16) is free to rotate on a second bearing (20) relative to a second part (21) connected to the first part, which may be connected to a vehicle such as a trolley The bracket or frame (24) of the load support body.

Description

technical field [0001] The present invention relates to castors. Background technique [0002] Many mobile devices, such as shopping and hospital trolleys, are usually maneuverable by having a caster wheel at each of the four corners. Known, especially when the load is heavy and the trolley needs to be maneuvered around corners. These difficulties are mainly due to the inability of the castors to rotate freely about their vertical axes. Contents of the invention [0003] It is an object of the present invention to provide a castor wheel that increases the degree of freedom of rotation about the vertical axis on which the castor wheel is mounted on the frame or frame of the trolley. [0004] According to the invention there is provided a caster comprising a fork with a pair of lugs, between which protrudes a transverse shaft supporting at least one wheel rotating thereon, and an upright A component, such as a support or frame of a load bearing body of a trolley may be co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60B33/00
CPCB60B33/0021B60B2200/242B60B2200/432B60B2380/12B60B2380/73B60B2380/75
Inventor 大卫·哈克特
Owner 大卫·哈克特
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