Material or article handling – Elevator or hoist and loading or unloading means therefor – Comprising device on carrier to move or carry load laterally...
Patent
1985-05-03
1989-05-23
Bucci, David A.
Material or article handling
Elevator or hoist and loading or unloading means therefor
Comprising device on carrier to move or carry load laterally...
180125, 414676, B66F 912
Patent
active
048325627
ABSTRACT:
An air bearing slip sheet tight material handling system utilizes a forklift truck with a horizontal platen a pantagraph mechanism supporting a vertical faceplate which has a gripper jaw pocket casing at the bottom. A vertically reciprocating clamping bar is depressable within the gripper jaw pocket casing to clamp the lip of a slip sheet. The slip sheet is of the air bearing type formed of thin flexible sheets sealed together about the edges to define a plenum chamber and forming a load support portion over a major surface outside of the lip area. A plurality of pinhole perforations are provided within the central portion of the bottom thin flexible sheet conforming to the footprint of the load carried by the slip sheet. An air source supplies pressurized air which is directed from a hose air outlet aligned with the air inlet of the slip sheet lip during depression of the clamping bar such that compressed air is directed into the chamber interior of the slip sheet lip for flow about the clamping area and from the air chamber of the lip to the plenum chamber for jacking of the load and creation of the air bearing.
REFERENCES:
patent: 2619241 (1952-11-01), Jessen
patent: 3834556 (1974-09-01), Crimmins
patent: 3948344 (1976-04-01), Johnson et al.
patent: 4155421 (1979-05-01), Johnson et al.
patent: 4298083 (1981-11-01), Johnson et al.
patent: 4417638 (1983-11-01), Harvey
patent: 4528704 (1985-07-01), Wegener et al.
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