US 4,051,565 A · Mat conveyor

Abstract

A lightweight, portable conveyor or transportation unit for moving heavy or fragile objects and which is particularly suited for the movement of injured humans as between supporting carriers, such as hospital emergency carts or tables, and a patient bed, or vice versa. The transportation unit comprises an open-ended, flexible tube-like member, the flexible walls of which collapse inwardly to form a double layer mat having a wear-resistant exterior layer or surface composed of tough flexible material and which may include an under cushion for the support of the patient's body. An inner layer or lining of flexible material having a low coefficient of friction is laminated coextensively over the inner face of the exterior layer. Objects are placed on the upper face of the mat and transported over an undersupporting surface by moving the collapsed flexible walls of the tube transversely of the tubular axis with the interengaged opposing surfaces of the slippery interior lining providing a desired low friction interface between the object and undersupporting surface.

Claims1

Dependent claims

A lightweight, portable conveyor for moving objects over an undersupporting surface, consisting of an open ended, flexible walled, radially collapsible, seamless tubular member dimensioned to at least coextend with the underside dimensions of an object to be moved, said member being made up of two concentrically laminated cylindrical layers of dissimilar flexible materials;

the outer one of said layers being relatively thick spongy material selected from the group of foam rubber and expanded foam plastic and having an exterior surface of relatively high frictional quality for frictionally coupling the tubular member to the underside of said object and an undersupporting surface;
and the inner one of said layers being relatively thin plastic material having the general anti-friction characteristics of polytetrafluoroethylene resin whereby opposed surface portions of said inner layer are interengaged in the radially collapsed state of said member and are slidingly movable over one another with little frictional resistance under the weight of the object to facilitate moving the latter in directions transversely of said member's tubular axis.

Dependencies are inferred from the claim text.

Mat conveyor

Life of this patent

Mat conveyor

Life of this patent

Abstract

Claims1