Wheel of a single or double caster for furniture
OwnerTobias Weichbrodtinventor
Life of this patent
Estimating the term…
Abstract
A wheel for a single or double caster for furniture or hospital beds or medical equipment, the wheel comprising: a rim; a tire; and a wheel bearing centrally arranged in the rim, wherein a running surface of the tire envelops the rim, and wherein the running surface of the tire includes a plurality of bonded spokes which are at least in contact the wheel bearing. The wheel is producible in a simple manner with short cycle times while having good thermal conductivity.
Claims8
A wheel for a single or double caster for furniture or hospital beds or medical equipment, the wheel comprising:
- a rim;
- a tire;
- and
- a wheel bearing centrally arranged in the rim,
- wherein a running surface of the tire envelops the rim, and
- wherein the running surface of the tire includes a plurality of bonded spokes which are in contact with or bonded to the wheel bearing.
A method for producing a wheel of a single or double caster for furniture, hospital beds or similar, the wheel including a tire, a rim and a wheel bearing wherein the tire is injection molded in a first injection molding step and the rim is injection molded in a second injection molding step, the method comprising:
- inserting the wheel bearing into a cavity of a first synthetic material injection molding tool in order to perform the first injection molding step;
- performing the first injection molding step including fabricating the tire including the running surface and a plurality of spokes that contact the wheel bearing;
- cooling the tire fabricated in the first injection molding step;
- extracting the tire from the first synthetic material injection molding tool using a transport device adapted to a shape of the tire;
- transporting the tire into a cavity of a second synthetic material injection molding tool in order to perform a second injection molding step;
- performing the second injection molding step including producing the rim;
- and
- cooling the wheel and retrieving the wheel from the second synthetic material injection molding tool.
An injection molding tool for producing a tire for a single or double caster for furniture, hospital beds or medical equipment, the injection molding tool comprising:
- at least one cavity for a running surface of the tire,
- wherein the at least one cavity includes additional portions configured for producing a plurality of spokes.
Dependencies are inferred from the claim text.