Having Additional Holding Means Patents (Class 285/290.4)
  • Patent number: 8034211
    Abstract: It is the object of the present invention a thermoplastic element for the protection against corrosion in the thermofused splicing of a thermoplastic tube to a thermoplastic connection, which element has the shape of a fully thermoplastic tubular sleeve, able to be introduced into a socket mouth formed by the expansion of the tube end, said splice element bearing only one internal diameter and two external diameters which define a cylindrical external portion of larger diameter and a tubular projection which diameter is smaller than the former, and which is introduced into the thermoplastic tube, a lateral wall of the external portion defining a front butt of said thermoplastic element against the end of the thermoplastic tube. Said splicing element also exhibits an auxiliary ring which operates as a reference point for the assembly thereof.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: October 11, 2011
    Inventor: Florencia Andersen
  • Patent number: 7325840
    Abstract: Arrangement for connecting a fiber-reinforced plastic pipe (18) to a stainless steel flange (12, 16), in which the end of the fiber-reinforced plastic pipe (18) is accommodated in a ring-shaped groove (12a, 16a) in the flange (12, 16), the groove conforming to the dimensions of the fiber-reinforced plastic pipe (18), where the gap remaining between the end of the fiber-reinforced plastic pipe (18) and the ring-shaped groove (12a, 16a) is filled with a sealant (19).
    Type: Grant
    Filed: May 18, 2005
    Date of Patent: February 5, 2008
    Inventors: Arnaud Allais, Ernst Hoffmann
  • Patent number: 7144048
    Abstract: A composite marine riser may be formed, in one embodiment, of a pair of threaded metallic sections having threaded external surfaces. The threaded external surfaces may taper from a larger to a smaller diameter. The composite material may be formed over the threaded external surfaces, which surfaces serve to transfer force from the metallic sections to the composite material.
    Type: Grant
    Filed: May 5, 2004
    Date of Patent: December 5, 2006
    Assignee: Stena Drilling Ltd.
    Inventor: Gavin Humphreys
  • Patent number: 7108294
    Abstract: A plastic coupling for joining two metal pipe sections end-to-end to form a pipe assembly. A first plastic spigot cuff is formed along the periphery of the end of the first pipe and a mating second plastic bell cuff is formed along the periphery of the end of the second pipe, such that the first and second cuffs form a bell and spigot joint with the first, spigot cuff inserted into and joined to the second, bell cuff.
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: September 19, 2006
    Assignee: Pacific Roller Die Company, Inc.
    Inventors: Robert F. Miller, Daniel D. Freitas
  • Patent number: 7083204
    Abstract: A coupling for joining metal pipes or pipe sections end-to-end to form a pipe assembly. A plastic cuff is formed on one of the pipe ends and a mating, second plastic cuff is formed on the other pipe end. In one embodiment, a wire hoop is mounted over each pipe end, the hoops are rotatable around the associated pipe ends to align the hoops, and bolt assemblies spanning the two hoops are used to tighten the hoops axially, to thereby clamp the pipe ends and compress the cuffs between the pipe ends and provide a leak-proof joint. The cuffs are selected from configurations including tongue-and-groove and bell-and-spigot. The cuffs can be formed on the pipe ends in the shop, then the pre-cuffed pipe sections can be readily assembled into stable, leak-proof, corrosion-resistant lengths of pipe in the field.
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: August 1, 2006
    Assignee: Pacific Roller Die Company, Inc.
    Inventors: Robert F. Miller, Daniel D. Freitas
  • Patent number: 6761187
    Abstract: A tubular assembly which includes a first (or outer) tube (12), a second (or inner) tube (21) and a plug (42) within the second tube (21) is described. The plug (42) resides within at least a portion of the second tube (21), which itself resides within a portion of the first tube (12). The first (12) and second (21) tubes each have perforations (15, 24), at least some of which are aligned. The plug (42) has cavities (45) in its exterior surface (48), at least some of which are aligned with the aligned perforations (36). Plastic material (e.g., thermoplastic material) is molded through aligned perforations (36) and at least partially fills aligned cavities (45). The edges (39) of aligned perforations (36) are embedded in the plastic material (53) molded therethrough. The plastic material (53) extending through aligned perforations (36), into cavities (45) and embedding perforation edges (39) therein, serves to fixedly attach the first tube (12), second tube (21) and plug (42) together.
    Type: Grant
    Filed: April 3, 2003
    Date of Patent: July 13, 2004
    Assignee: Bayer Polymers LLC
    Inventor: Olaf J. Zoellner
  • Patent number: 6742813
    Abstract: In a method of securing tensile reinforcement elements (7) of a pipeline or a cable to an end termination (18), the end termination is provided with a plurality of locking holes through which the reinforcement elements to be secured are pulled. Insertion of a spreader element into the reinforcement element results in a local cross-sectional increase in the tensile reinforcement. The reinforcement element cannot move freely through the locking hole because of the local cross-sectional increase, thereby achieving mechanical locking.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: June 1, 2004
    Assignee: NKT Flexibles I/S
    Inventor: Kristian Glejbol
  • Patent number: 6508275
    Abstract: A molded fuel filler pipe for use in automobiles, in particular cars, comprises a one-piece structure which is blow molded. The conduit produced in the blow mold has a smooth edged tubular portion and a bellows portion which is molded at the same time. By deforming the bellows portion, flexibility in the relative location of the two ends of the conduit is provided. This eliminates taking two separate pieces and joining those pieces which may give rise to fuel vapour permeation through the joints.
    Type: Grant
    Filed: March 15, 2000
    Date of Patent: January 21, 2003
    Assignee: Salflex Polymers Ltd.
    Inventors: Changize Sadr, Sam Shafiee