Caster

Abstract

A caster for equipment and furniture, the caster comprising a support element including a top element and a base element, wherein the top element includes an attachment bolt configured to attach the caster and the base element includes a wheel axle that supports at least one wheel, wherein a replaceable substantially circumferential one-piece support element cover made from a synthetic material that provides a continuous design surface is arranged at the support element.

Claims

1. A caster for equipment and furniture, the caster comprising: a support element including a top element and a base element, wherein the top element includes an attachment bolt including an attachment bolt axis and configured to attach the caster at the equipment and the furniture and the base element includes a wheel axle that defines a wheel axis and supports at least one wheel so that the base element swivels about the attachment bolt axis and the wheel rotates about the wheel axis, wherein a replaceable substantially circumferential one-piece support element cover integrally made from a synthetic material that provides a continuous design surface is arranged at the support element, wherein the replaceable substantially circumferential one-piece support element cover includes two circular wheel cover portions that are connected by a flexible centerpiece, wherein the two circular wheel cover portions cover the support element and circular portions of the wheel, and wherein the flexible centerpiece is bent about a bending axis that is parallel to the attachment bolt axis when the replaceable substantially circumferential one-piece support element cover is fixed at two sides of the support element that face in opposite directions with respect to the wheel axis.

2. The caster according to claim 1, wherein the support element cover is made from polypropylene.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Further advantages of the invention can be derived from the subsequent description of an embodiment with reference to drawing figures, wherein:

(2) FIG. 1 illustrates a side view of a single wheel caster without support element cover;

(3) FIG. 2 illustrates a top view of the support element cover;

(4) FIG. 3 illustrates an interior view of the support element cover according to FIG. 2;

(5) FIG. 4 illustrates the single wheel caster according to FIG. 1 with the support element cover arranged thereon;

(6) FIG. 5 illustrates a blown-up detail sectional view of an interlocking device attached according to sectional lines V-V in FIG. 4;

(7) FIG. 6 illustrates a face view of the single wheel caster according to view arrow VI in FIG. 4; and

(8) FIG. 7 illustrates a face view of the single wheel caster according to view arrow VII in FIG. 4.

DETAILED DESCRIPTION OF THE INVENTION

(9) A single wheeled caster is overall designated in the drawing figures with the reference numeral 10.

(10) FIG. 1 illustrates a single wheel caster 10 in a side view. FIG. 1 shows a support element (support housing) 11 including a top element 12 and base element 13. A wheel 15 is rotatably arranged on a wheel axle 14 at the base element 13. A swivel bearing is arranged at the top element 12 under a bearing cover 16 wherein an attachment bolt 17 for arrangement e.g. at a hospital bed protrudes upward from the bearing cover 16.

(11) Four receiving portions 18 for interlocking devices are visible at the support element 11.

(12) FIG. 2 illustrates a support element cover 19 that is spread out flat and viewed from outside. FIG. 3 illustrates an inside view of the same support element cover 19. FIG. 4 illustrates the single wheel caster 10 with the support element cover 19 arranged thereon.

(13) The support element cover 19 illustrated in FIG. 2 is made from a synthetic material, advantageously polypropylene, and includes two wheel cover portions 20, two support element cover portions 21, and a flexible center element 22.

(14) As evident from FIG. 3, the inner surfaces of the support element cover 19 respectively include two interlocking elements 23 in an area of the wheel cover portions 20 and of the support element cover portions 21 which are interlocked in the support element 11 in an assembled condition of the caster as will be described infra. Additionally inner surfaces of the wheel cover portions 20 are provided with two respective support portions 24 which engage the support element 11 by form-locking after attachment of the support element cover 19 at the support element. The support portions 24 react lateral forces at the support element 11 so that the interlocking elements 23 do not carry any load.

(15) FIG. 5 illustrates a blown-up partial sectional view according to the sectional line V-V in FIG. 4. Therein it is evident that the support element cover 19 reaches behind an interlocking protrusion 25 formed at the support element 11 using an interlocking device 23. The support element cover 19 is reliably attached at the single wheel caster 10 by two interlocking devices respectively arranged at each wheel cover portion 20 and at each support element cover portion 21.

(16) Last not least, FIGS. 6 and 7 illustrate face views of the single wheel caster 10 including the support element cover 19 according to the view arrows VI and VII in FIG. 4.

REFERENCE NUMERALS AND DESIGNATIONS

(17) 10 Single wheel caster 11 Support element 12 Top element 13 Base element 14 Wheel axle 15 Wheel 16 Bearing cover 17 Attachment bolt 18 Receiving portion for interlocking device 19 Support element cover 20 Wheel cover portion 21 Support cover portion 22 Flexible center element 23 Interlocking element 24 Support portion 25 Interlocking protrusion