Caster with conductors between the tire of its wheel and the carrier of its wheel frame

Abstract

A caster wherein the metallic carrier for a plastic wheel frame is connected to the conductive tire of the wheel by a multi-section conductor system having a portion in the disc-shaped connector between the rim and the hub of the wheel, a portion which is connected with the outer race of an antifriction ball bearing surrounding the hub, a shaft forming part of a fulcrum for the hub of the wheel, a wire in an internal groove of one leg of the wheel frame, the devices which can be actuated to brake the wheel and to block angular movements of the frame relative to the carrier, and a spring which connects the two devices to one another. The braking and blocking devices can be actuated by a conductive plunger which is non-rotatably but axially movably installed in and contacts the carrier and can be shifted by a spring in cooperation with a rotary cam in the carrier. The conductor system serves to convey static electric charges between the conductive tire of the rim and the carrier which latter is installed in the leg of a piece of furniture or in any other object or body to be mounted on one or more casters.

Dependencies are inferred from the claim text.