Patents by Inventor Robert B. Knudsen

Robert B. Knudsen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Rope for heavy lifting applications
    Patent number: 6945153
    Abstract: A large diameter rope having improved fatigue life on a sheave, pulley, or drum is disclosed. This rope includes a blend of HMPE filaments and liquid crystal polymer filaments selected from the group of lyotropic polymer filaments and thermotropic polymer filaments. The rope may be constructed as a braided rope, a wire-lay rope, or a parallel core rope.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: September 20, 2005
    Assignees: Celanese Advanced Materials, Inc., Puget Sound Rope
    Inventors: Robert B. Knudsen, Forrest E. Sloan
  • Rope for heavy lifting applications
    Publication number: 20040069132
    Abstract: A large diameter rope having improved fatigue life on a sheave, pulley, or drum is disclosed. This rope includes a blend of HMPE filaments and liquid crystal polymer filaments selected from the group of lyotropic polymer filaments and thermotropic polymer filaments. The rope may be constructed as a braided rope, a wire-lay rope, or a parallel core rope.
    Type: Application
    Filed: October 15, 2002
    Publication date: April 15, 2004
    Applicants: Celanese Advanced Materials, Inc., Puget Sound Rope, a/k/a Viking Rope Corporation
    Inventors: Robert B. Knudsen, Forrest E. Sloan
  • Thermotropic polymer heterofilament
    Publication number: 20030236553
    Abstract: A sheath/core heterofilament has a core polymer and a sheath polymer. The core polymer and the sheath polymer are different. One of the polymers is a thermotropic polymer. The other polymer is preferably a thermoplastic polymer selected from the group consisting of polyamides, polyesters, polyolefins, fluorocarbons, and combinations thereof. The weight ratio of the core polymer to the sheath polymer ranges from 50:50 to 80:20. When the core polymer is the thermotropic polymer, the sheath polymer is adapted to contain microfibrils formed by the thermotropic polymer core. These heterofilaments may be used as sutures or as orthopedic (or surgical) cords.
    Type: Application
    Filed: June 24, 2002
    Publication date: December 25, 2003
    Applicant: Celanese Advanced Materials, Inc.
    Inventor: Robert B. Knudsen
  • Prosthetic ligament
    Patent number: 6599319
    Abstract: A prosthetic ligament includes a cord of thermotropic liquid crystal filaments. The cord preferably comprises multi-filament thermotropic liquid crystal filaments. The cord has an eye spliced at each of its ends.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: July 29, 2003
    Assignees: Celanese Advanced Materials, Inc., Cortland Cable Company, Inc.
    Inventors: Robert B. Knudsen, Richard E. Nye
  • PROSTHETIC LIGAMENT
    Publication number: 20030114929
    Abstract: A prosthetic ligament includes a cord of thermotropic liquid crystal filaments. The cord preferably comprises multi-filament thermotropic liquid crystal filaments. The cord has an eye spliced at each of its ends.
    Type: Application
    Filed: December 14, 2001
    Publication date: June 19, 2003
    Applicant: Celanese Advanced Materials, Inc.
    Inventors: Robert B. Knudsen, Richard E. Nye