Material or article handling – Elevator or hoist and loading or unloading means therefor – Grab
Patent
1989-12-05
1991-09-24
Werner, Frank E.
Material or article handling
Elevator or hoist and loading or unloading means therefor
Grab
414627, 901 21, B25J 1100
Patent
active
050510550
ABSTRACT:
An article lifting device includes vertically elongate hollow tubular frame members, one telescopically received within the other for guided vertical movement. The outer member includes a bracket for fixedly mounting the outer member upon a support, which may be a horizontally movable shuttle carriage, and carries a reversible drive motor coupled to a drive gear mounted for rotation about a horizontal axis near the lower end of the outer member. A flexible belt having teeth at one side is fixed at opposite ends to the upper and lower ends of the inner member and a bight portion of the belt is meshed with the drive gear, the bight portion projecting from the inner member between two idler rolls mounted on the outer member and passing around the drive gear. The idler rolls hold those portions of the belt other than the idler rolls in face-to-face engagement with the inner member. This arrangement leaves the entire interior of the inner member available for the reception of a counterbalance cylinder and sliding electrical and pneumatic connections between the inner and outer member used to supply electric power and air under pressure to article holder devices carried at the lower end of the inner member.
REFERENCES:
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patent: 4032020 (1977-06-01), Kato et al.
patent: 4674784 (1987-06-01), Wooley
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patent: 4850782 (1989-07-01), Focke
Blatt John A.
Crorey David
Blatt John A.
Dinicola Brian K.
Werner Frank E.
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