Allied Tube & Conduit Corporation

Giulio Scartozzi

Edward E Mild

Raffaele Basile

Lawrence P Vollmuth

Humberto A Hijuelos

A joint construction includes first and second conduit sections having coaxially overlapping end areas. A coupling member has a first end received within the end of the first conduit section and a second end with external threads. A bore of the coupling member receives the second section end area. A plurality of protrusions are formed on an outer surface of the coupling member. The plurality of protrusions engage a plurality of complimentary features formed on the end area of the first conduit section. A gland nut has threads configured to engage the external threads of the second end of the coupling member. A washer is disposed on the second conduit section between the second end of the coupling member and the gland nut. The washer is configured to engage the end area of the second conduit section to resist relative axial movement between the first and second conduit sections.

Joint construction for coupling conduit sections

A coupling system for conduit and pipe for carrying insulated electrical cable, more particularly, a conduit coupling assembly for connecting multiple lengths of conduit in coaxial relationship.

Method of manufacturing a coupling assembly

Conduit coupling assembly

Apparatus is provided for the continuous production of tubing from steel strip. The formed tubing is continuously advanced along a straight-line path through polishing and buffing units to provide a smooth lustrous finish to the tubing, and through a coating chamber in which the tubing is coated with a polymer coating to prevent tarnishing of the lustrous polished surface. The finished tubing has a surface which is suitble for decorative applications such as furniture or the like.

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Chicago Heights, IL, United States of America

Giulio Scartozzi