US 4,890,973 AGranted

Universal fork-supported push-pull slip sheet handling attachment for forklift trucks

AssigneeBrudi Equipment, Inc.

InventorsEmmett C. Frison, Daniel F. Chase

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Abstract

A push-pull slip sheet handling attachment for a forklift truck is fork-supported. The attachment is connected to the fork upright portions. In one embodiment, the base frame of the attachment includes side frame members that straddle the fork uprights and fork connectors that are vertically movable on a base frame support foot between latching positions behind the fork uprights and release positions below the fork uprights. In another embodiment, the base frame is mounted in front of the fork uprights and has pin-type fork connectors adjustable vertically and movable transversely behind the fork uprights between latching and release positions. Both embodiments have lightweight, compliant base frames comprising an open framework having thin side frame members and a minimum of cross frame members.

Claims26

Dependent claims

A push-pull attachment for mounting on a forklift truck having a lift carriage means including a pair of load lifting forks mounted on a lift carriage, the forks including generally horizontally extending load-supporting fork portions and upright fork portions, the attachment comprising:

an upright base frame;
load-engaging platen means connected to and extending forwardly from said base frame;
a push-pull assembly connected to said base frame above said platen means including an upright push plate, extensible and retractable means for moving said push plate inwardly and outwardly from said base frame above said platen means, and gripping means associated with said push plate to grip a slip sheet and pull it and a load supported thereon onto said platen means;
connecting means for connecting said base frame to the lift carriage means of the forklift truck to resist forward movement of the base frame relative to the lift carriage while the base frame, platen means and push-pull assembly are vertically supported on the forks;
said base frame comprising an open framework including a pair of transversely spaced upright side frame members having substantially greater fore-and-aft width dimensions than their transverse thickness dimensions and top and bottom cross frame members joining said side frame members;
said platen means comprising a relatively thin planar platen plate means connected directly to the underside of said bottom cross frame member with an upper face of the platen plate means engageable with a lower face of the bottom cross frame member, and with the lower face of the platen plate means engageable by upper faces of the load lifting forks.

3 more elements

an upright base frame;
load-engaging platen means connected to and extending forwardly from said base frame;
a push-pull assembly connected to said base frame above said platen means including an upright push plate, extensible and retractable means for moving said push plate inwardly and outwardly from said base frame above said platen means, and gripping means associated with said push plate to grip a slip sheet and pull it and a load supported thereon onto said platen means;
connecting means for connecting said base frame to the lift carriage means of the forklift truck to resist forward movement of the base frame relative to the lift carriage while the base frame, platen means and push-pull assembly are vertically supported on the forks;
said base frame comprising an open framework including a pair of transversely spaced upright side frame members separated by cross frame members;
said connecting means being carried on said side frame members and including latching pin means movable between a latching position behind a fork upright portion and a release position, wherein said latching pin means is movable transversely of and behind said side frame members between said latching and release positions.

3 more elements

Dependencies are inferred from the claim text.