Jack assembly
AssigneeBos Fabrication Engineering Services Pty Ltd
InventorJurgen Van Den Bos
Life of this patent
Estimating the term…
Abstract
A jack assembly including a telescopic column driven via a gear box, wherein: the gear box is coupled to a rotary input of a drive mechanism that extends and retracts the column; the gear box has only a single input gear and a single output gear that is coupled to the drive mechanism; and the input gear has a connector adapted to be engaged and driven by a portable, hand-held power tool. A jack assembly with a gear box for use as a jockey wheel for attachment to a towed vehicle, to raise and lower a draw bar of the vehicle is also provided.
Claims17
A jockey wheel including a telescopic column for attachment to a towed vehicle, to raise and lower a draw bar of the vehicle, wherein the column includes:
- a drive mechanism with a rotary input that rotates to cause the column to extend or retract;
- and a gear box with a rotary connector adapted to connect to and be driven by a power tool, wherein the gear box comprises an output gear having a socket that drives the rotary input so as to provide for geared operation of the drive mechanism, wherein the gear box is mounted over a top end of the column such that the socket of the output gear fits over and engages the rotary input, wherein the output gear and the rotary input have a common rotational axis, and wherein the rotary connector has a rotational axis that is parallel to the common rotational axis.
Dependencies are inferred from the claim text.