Automation Industries, Inc.

Marvin A Koerber

Thomas A Kutnyak

Henry K Wills

A helically fabricated flexible hose having a self-supporting helical reinforcing element of non-circular cross-section with a flat side facing inwardly, thereby imparting a substantially smooth surface to the hose interior.

Smooth bore flexible hose

A flexible vacuum cleaner hose having an electric lead integral therewith and extending from one end to the other of said hose, a control switch and an overload device carried by said hose and in circuit with said lead, and electric cords extending from the ends of said hose, also in circuit with the lead, providing an overload protected current carrying vacuum cleaner hose for energizing a vacuum cleaner power head.

Electric current-carrying hose assembly having end fittings enclosing an

A helically fabricated flexible hose having two reinforcing wires which also serve as electrical conductors and a multiple-ply wall which is thicker over the wire convolutions than between them and is reinforced with cords within the wall plies.

Dual wire hose

The reinforced flexible duct consists of a single- or double-ply reinforcing fabric, a wire helix, and a continuous extruded liner. The fabric, wire helix, and extruded liner are continuously helically wound on a mandrel. The freshly extruded liner adheres to itself, to the helically wound wire, and to the reinforcing fabric to form a continuous reinforced flexible duct. Optionally, a narrower continuously extruded and wound scuff strip can be wound over the wire helix.

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Abbeville, SC, United States of America

Marvin A Koerber