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A material handling lift having a movable frame, a mast mounted at one end to a shuttle assembly movable on the frame, and a load handling assembly attached to the mast by means of two extending arm members. The frame comprises two longitudinal C-shaped side rails in which the shuttle assembly can b

A material handling lift having a movable frame, a mast mounted at one end to a shuttle assembly movable on the frame, and a load handling assembly attached to the mast by means of two extending arm members. The frame comprises two longitudinal C-shaped side rails in which the shuttle assembly can be reciprocated by wheels which engage the inner surfaces of the rails. The sections of the wheels which engage the rails are arched to prevent the lift from tipping when the lift is moving in a sloped direction. Guide wheels mounted on the shuttle assembly rotate across the surfaces of the sides of the upper rails, thereby stabilizing movement of the shuttle assembly along the rails. The shuttle assembly can be sustained in any position along the rails by operation of a hand-operated shuttle brake. The load handling assembly is characterized by a pair of forks adjustably mounted on two horizontally parallel bars, the lower bar attached to a curved extension arm which can be raised or lowered by means of a hydraulic cylinder, and the upper bar attached to a tie bar assembly extended and retracted by a hydraulic cylinder, thereby tilting the forks forward or backward, respectively. The lift can be easily disassembled and packaged in a crate to be shipped by the removal of five pins.

대표청구항 ▼

[ What is claimed is:] [1.] A material handling lift comprising:a) a frame having first and second parallel spaced longitudinal track rails, said first and second longitudinal track rails defining a frontward portion and a rearward portion, said rearward portions of said first and second longitudina

[ What is claimed is:] [1.] A material handling lift comprising:a) a frame having first and second parallel spaced longitudinal track rails, said first and second longitudinal track rails defining a frontward portion and a rearward portion, said rearward portions of said first and second longitudinal track rails connected by a lateral support member;b) a shuttle assembly operably mounted within and between said first and second longitudinal track rails for longitudinal reciprocating movement therein;c) a mast defined by a first section rigidly attached at one end to said shuttle assembly and extending a rearward angle relative thereto, and a second section extending from another end of said first section perpendicular to said longitudinal track rails;d) a lift arm defining a first end and a second end, said first end pivotally coupled to said mast at the junction of said first and second sections of said mast, said lift arm having a downward bend located between said first and second ends;e) a load carrying assembly having an upper bar and a lower bar coupled together at one end by a first endplate and at another end by a second endplate, and a pair of forks slidably mounted on said upper and lower bars for adjustable movement, said lower bar rotatably coupled to said second end of said lift arm;f) a tilt arm pivotally attached at one end to said upper bar of said load carrying assembly;g) a first extensible and retractable device secured at one of its ends to another end of said tilt arm, and pivotally coupled at another end to an end of said second section of said mast above said lift arm for angularly adjustably positioning said load carrying assembly with respect to said frame; andh) a second extensible and retractable device secured at one end to said shuttle assembly and pivotally secured at another end to said lift arm at said bend for raising and lowering said lift arms and thus said load carrying assembly.