Height-adjustable support for semitrailers or the like

Details Height-adjustable support for semitrailers or the like Height-adjustable support for semitrailers or the like

2004-11-30

2009-08-18

Vanaman, Frank B (Department: 3618)

Land vehicles

Wheeled

Attachment

C254S419000

Reexamination Certificate

active

07575249

ABSTRACT:
A height adjustable support comprising a stationary outer support tube, an inner support tube arranged in a longitudinally displaceable manner in the outer support tube, a gearbox output shaft mounted for rotational movement in the outer support tube, a bevel gear fixed to the gearbox output shaft, a spindle drive engaged with the bevel gear for displacing the inner support tube within the outer support tube, a gearwheel fixed to the gearbox output shaft and engaging a pinion of a drive motor, for driving the gearwheel, the gearbox output shaft, the bevel gear and the spindle drive for moving the inner support tube, and a switch off device which deactivates the drive motor when an end of the inner support tube abuts a surface.

REFERENCES:
patent: 3768088 (1973-10-01), Risius
patent: 3888464 (1975-06-01), Felsen
patent: 4084777 (1978-04-01), Lambert
patent: 4205824 (1980-06-01), Mai
patent: 4796864 (1989-01-01), Wilson
patent: 5538225 (1996-07-01), VanDenberg
patent: 6994325 (2006-02-01), Riedl
patent: 7083196 (2006-08-01), Riedl
patent: 196 16 704 (1997-10-01), None

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