초록 ▼

A pivotable hand truck for supporting or installing a heavy object is provided comprising an L-shaped structure, a pair of wheels secured to the L-shaped structure about which the structure may be pivoted between horizontal and vertical positions, and lifting means carried by the structure adapted t

A pivotable hand truck for supporting or installing a heavy object is provided comprising an L-shaped structure, a pair of wheels secured to the L-shaped structure about which the structure may be pivoted between horizontal and vertical positions, and lifting means carried by the structure adapted to vertically adjust the object to a selected height above the floor surface. The lifting means is defined by a floor-engaging pedal affixed to the L-shaped structure, height-adjusting members carried by the structure, and activating means for activating the height-adjusting members when the pedal is moved between a non-operational position and an operational position. The activating means is defined by a rod member secured to the apparatus which engages the height-adjusting members, and coupling means mechanically coupling the rod member to the pedal. The coupling means is defined by a plurality of interconnecting lever arms, or, alternatively, a cable-and-pulley mechanism. In use, the operator depresses the floor-engaging fulcrum elevating one end of the structure. The depressing of the pedal activates the activating means which, in turn, activates the height-adjusting members which, in turn, engage the floor surface and elevate the opposite end of the structure, thereby variably elevating the object as desired.

대표청구항 ▼

A pivotable hand truck apparatus for holding and transporting a generally rectangular-shaped object comprising: a structure for supporting the object by two edges comprising a first support member adapted to support a first edge of said object and a second support member adapted to support a second

A pivotable hand truck apparatus for holding and transporting a generally rectangular-shaped object comprising: a structure for supporting the object by two edges comprising a first support member adapted to support a first edge of said object and a second support member adapted to support a second edge of said object, said second edge being positioned substantially transversely to said first edge, and said first support member being positioned substantially transversely to said second support member and being connected thereto at a point defining an apex; means secured to said structure adjacent the apex about which the structure may be pivoted between substantially horizontal and vertical positions; and p1 lifting means carried by said structure adapted to vertically adjust the object, said support structure being adapted to first receive said object while disposed with the second support member and the second edge of the object supported thereby being in substantially horizontal position, said support structure thereafter being adapted to be pivoted about said pivoting means so that said first support member and said first edge of said object supported thereby are disposed in a substantially horizontal position and said second support member and said second edge of said object supported thereby are disposed in a substantially vertical position; said lifting means being adapted to be thereafter activated to vertically adjust the object to a selected height above a floor surface, said lifting means comprising: at least one pedal hingedly affixed to said first support member, said at least one pedal having a floor-engaging fulcrum arranged on the underside thereof, said pedal being adapted to be moved between a non-operational position and an operation position; at least one height-adjusting member carried by said structure; and means for activating said height adjusting member when said pedal is moved from the non-operational position to the operational position.