Lifting jack arrangement for lifting platforms
AssigneeMaha Maschinenbau Haldenwang GmbH & Co. KG
InventorHubert Wanner
Life of this patent
Estimating the term…
Abstract
A lifting jack arrangement for lifting platforms. The lifting jack has a liftable and lowerable, dimensionally stable guide tube on the upper end of which support elements, for example for a motor vehicle, can be mounted. A driving unit would typically be coupled with the guide tube for lifting and lowering it. A stationary guiding sleeve has sliding elements which are in contact with the guide tube. The guide tube is coated with a reduced-friction, abrasion resistant sliding layer consisting of a permanently adhering synthetic material containing PTFE.
Claims16
A lifting jack arrangement for lifting platforms comprising:
- a liftable and lowerable, dimensionally stable guide tube having an upper end configured to include support elements for supporting a motor vehicle, wherein the guide tube is coated with a reduced-friction, abrasion resistant sliding layer, wherein the reduced-friction, abrasion resistant sliding layer comprises a fixedly adhering synthetic material containing PTFE;
- and
- a stationary guiding sleeve comprising sliding elements that are in contact with the guide tube.
A lifting jack arrangement for lifting platforms comprising:
- a liftable and lowerable, dimensionally stable guide tube having an upper end configured to include support elements for supporting a motor vehicle, wherein the guide tube is coated with a reduced-friction, abrasion resistant sliding layer, wherein the reduced-friction, abrasion resistant sliding layer comprises a fixedly adhering synthetic material containing PTFE;
- a stationary guiding sleeve comprising sliding elements that are in contact with the guide tube;
- and
- a driving unit comprising at least one hydraulic piston/cylinder unit disposed inside or outside of the guide tube, said hydraulic piston/cylinder unit further comprising a stationary piston rod and a liftable and lowerable cylinder housing, said stationary rod being supported by a lower base and the liftable and lowerable cylinder housing of said piston/cylinder unit being fixedly connected to the upper end of the guide tube via a massive plate element.
Dependencies are inferred from the claim text.