Patents by Inventor John Bouwman

John Bouwman 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).

  • Linear tracking isokinetic exerciser and method
    Patent number: 5437587
    Abstract: A recumbent bilateral reciprocal isokinetic leg exerciser wherein first and second reciprocating members are slidingly coupled to a linear track so that they move with linear bilateral reciprocal motion. Both reciprocating members are coupled to associated hydraulic cylinders so that hydraulic fluid is drawn into or forced out of the hydraulic cylinders as the reciprocating members move along the track. A valve assembly is coupled to the hydraulic cylinders for controlling fluid flow into and out of the hydraulic cylinders so that the reciprocating members move isokinetically. The valve assembly may be set for simultaneous movement of the first and second reciprocating members or for movement of one reciprocating member by itself. To ensure accurate measurement of patient effort, a strain gauge assembly is disposed on each reciprocating member for detecting deformation of the reciprocating member along multiple axes.
    Type: Grant
    Filed: July 15, 1993
    Date of Patent: August 1, 1995
    Assignee: Loredan Biomedical
    Inventors: Jeffrey T. Prince, Glen R. Mangseth, Malcolm L. Bond, John Bouwman, Philip T. Dempster
  • Linear tracking isokinetic exerciser
    Patent number: 5330397
    Abstract: A recumbent bilateral reciprocal isokinetic leg exerciser wherein first and second reciprocating members are slidingly coupled to a linear track so that they move with linear bilateral reciprocal motion. Both reciprocating members are coupled to associated hydraulic cylinders so that hydraulic fluid is drawn into or forced out of the hydraulic cylinders as the reciprocating members move along the track. A valve assembly is coupled to the hydraulic cylinders for controlling fluid flow into and out of the hydraulic cylinders so that the reciprocating members move isokinetically. The valve assembly may be set for simultaneous movement of the first and second reciprocating members or for movement of one reciprocating member by itself. To ensure accurate measurement of patient effort, a strain gauge assembly is disposed on each reciprocating member for detecting deformation of the reciprocating member along multiple axes.
    Type: Grant
    Filed: August 20, 1993
    Date of Patent: July 19, 1994
    Assignee: Loredan Biomedical, Inc.
    Inventors: Jeffrey T. Prince, Glen R. Mangseth, Malcolm L. Bond, John Bouwman, Philip T. Dempster