The support (10) has a fixed outer tubular support body (12) and a longitudinally movable inner support tube (13) movable up or down by a drive mechanism. The outer support body consists of a trough profile with a U-shaped region on whose leg ends are two ...

Height-adjustable support (10) comprises a fixed supporting outer tube (12), a longitudinally extending supporting inner tube (13), a drive delivery shaft on which a conical wheel sits and a drive shaft which is hollow or having an extension which is hollo...

The device has a fixed outer tube (12), a longitudinally adjustable inner tube (13) and a gear mechanism output shaft with a smaller diameter bevel gear seated on it that belongs to a gear stage driving a spindle drive to move the inner tube. Two large dia...

The trailer support whose height can be adjusted comprises telescopic outer and inner tubes. The inner tube can be moved inside the outer tube by a spindle (17) with a cogwheel (28) mounted on its upper end. This cooperates with a second cog (30) mounted o...

The mounting of a motor on especially semi-trailer landing gears (2a,2b) has the landing gears interconnected by a connecting shaft (4) and through engaging of the motor are telescopic. The motor (1) acts upon the connecting shaft by its drive shaft (5) an...

Landing gear (10) for selectively supporting a semitrailer and a method of assembly of the landing gear is provided. The landing gear (10) includes a leg (11) having an upper section (15) and a lower section (13) telescopingly received in the upper section...

An additional safety nut (8) which can not be rotated relative to the inner sleeve (2) is mounted on the spindle (5). The jack comprises a height adjustable telescopic support (3) with an outer sleeve (1) and an inner sleeve. A spindle inside the jack is o...

A motor-operated jack for vehicles is disclosed. In the motor-operated jack of this invention, a lifting unit consists of a spiral lifting ram (105) having an internal thread (105a) limitedly formed at a lower portion of the spiral lifting ram (105), thus ...

The lifting of a car can be achieved simply by two identical mechanisms each of which uses a motion screw (2). These two mechanisms are independent from each other and are located on both left and right sides of the car. The motion is transferred by a cran...