초록 ▼

A telescoping gripping and lift assembly for use with a flat bed truck or the like includes a pair of gripper arms, each of which is attached to a transverse lift housing which, in turn, is pivotably attached to the rear of the flat bed. Each of the gripper arms is telescopically extendable relative

A telescoping gripping and lift assembly for use with a flat bed truck or the like includes a pair of gripper arms, each of which is attached to a transverse lift housing which, in turn, is pivotably attached to the rear of the flat bed. Each of the gripper arms is telescopically extendable relative to a respective opposing end of the lift housing between grip and release positions via a pressure equalizing gripping piston & cylinder unit positioned within the lift housing. In addition, each of the gripper arms is a two part construction with an outer sleeve encompassing an inner sleeve and with a respective hydraulic telescoping cylinder selectively extending and retracting the larger outer sleeve relative to the smaller inner sleeve.

대표청구항 ▼

[ I claim:] [1.] A gripping and lift assembly for lifting large objects from ground level to an elevated bed, comprising:a. a lift housing attached to and being selectively pivotable relative to said flat surface;b. a gripping actuator positioned within said lift housing; andc. a pair of gripper arm

[ I claim:] [1.] A gripping and lift assembly for lifting large objects from ground level to an elevated bed, comprising:a. a lift housing attached to and being selectively pivotable relative to said flat surface;b. a gripping actuator positioned within said lift housing; andc. a pair of gripper arms with each said gripper arm being attached to said gripping actuator and being selectively movable inward and outward relative to said lift housing between grip and release positions, respectively, each said gripper arm including:i. an inner sleeve;ii. an outer sleeve which is larger than and extends around at least a portion of said inner sleeve;iii. a telescoping operating mechanism attached to both said inner and outer sleeves which allows said outer sleeve to be selectively, telescopically extended and retracted relative to said inner sleeve;d. a twin cylinder housing with first and second pistons operating within respective first and second cylinder housing portions, respectively, said first housing portion being of a smaller diameter than and being longer than said second housing portion such that the interior volume of said first and second housing portions are approximately equal; ande. a pressure equalizing tube interconnecting said first and second cylinder housing portions.