Land vehicles – Step or abutment ascending type vehicle – Jack-type attachment
Patent
1997-06-20
1998-11-03
Brahan, Thomas J.
Land vehicles
Step or abutment ascending type vehicle
Jack-type attachment
280 52, B62B 502
Patent
active
058297634
ABSTRACT:
In combination an elevating unit for readily releasable attachment to a hand truck is disclosed. The elevating unit comprises, when in place on the hand truck, a main body portion having a front side and a back side. An extension leg has a foot portion and is disposed in sliding relation within the main body portion for selectively controlled movement between a first extended position whereat the foot portion is disposed below the lower end of the frame and a second retracted position whereat the foot portion is raised from being disposed below the lower end of the frame. An elongate threaded rod is operatively mounted on the main body portion for rotation in opposed first and second rotational directions by an electrically energizable reversible motor. A recirculating ball nut threadibly engages the elongate threaded rod for movement along the length thereof as the elongate threaded rod rotates. The extension leg is secured to the recirculating ball nut for movement therewith. A three position electrical switch is electrically coupled to the electrically energizable reversible motor to permit selective actuation of the drive means in the first and second directions. A first bracket is mounted on the main body portion for removable secured engagement of the main body portion to the upper cross-member. A second bracket is mounted to the main body portion for removable secured engagement of the main body portion to the lower cross-member.
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Brahan Thomas J.
Hofbauer Patrick J.
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