Rib Loc Australia Pty Ltd.

Rib Loc (hong Kong) Ltd.

J-m Manufacturing Company, Inc.

Rib Loc (h.k.) Limited

Stanley W Menzel

David E Mominee

Gilbert W Vance

Plastic profiled strip forming helically wound tube using hinged flap

Helically wound reinforced ribbed composite structure

Loop machine for helically winding strip

Slip control for helically wound pipes

Method of protecting conduits including helically winding a strip

Method of producing reinforced ribbed tubes

Method of and means for forming and sealing helically wound tubes

The formation of tubular objects by spirally winding and seaming a relatively rigid strip of plastics material. A sealing flap (15, 215) along one longitudinal edge (5, 25) of the strip, and an engaging surface (16, 216) along the other edge (11, 211) positioned close to but separate from the interlocking portions (8 and 12, 28, 212) of these longitudinal edges. The provision of these sealing flaps and engaging surfaces permit the interlocking portions at the edges to be designed independent of the ability of these interlocking portions to create a fluid seal. This results in optimum operation of these interlocking portions to, for example, permit relatively rapid changes in the diameter of the tube as it is formed, as well as subsequent to its formation.

Tubular plastics objects

The method of forming tubes from strip in which a complementary rib and groove are spaced apart to each extend longitudinally on the strip and oppositely facing on the said strip characterized by guiding the strip into a helical configuration to overlap the edges of the said strip, and pressing together the overlapping parts of the said strip while maintaining a differential pressure in the direction of feed to force the strip together under such differential pressure.

Machine for forming tubes from a strip

Machine and method for forming tubes from a strip

Growing community of inventors

Burnside, Australia

Stanley W Menzel