Patents Assigned to J. A. Preston Corporation
  • Simulated hydrotherapy bath
    Patent number: 4541418
    Abstract: A simulated hydrotherapy bath that avoids the dangers of water and yet simulates the sensory properties thereof is provided. The pool is comprised of a plurality of upholstered panels, each of which are secured together to define a soft-sided free-standing enclosure. Disposed within the enclosure defined by the panels are a plurality of crushable shape-retentive balls that have a predetermined diameter that is sufficiently large to prevent swallowing of the balls and yet sufficiently small so as to optimize a child's grasp thereof.
    Type: Grant
    Filed: August 25, 1982
    Date of Patent: September 17, 1985
    Assignee: J. A. Preston Corporation
    Inventor: John R. Kirby
  • Hand dynamometer
    Patent number: D247553
    Type: Grant
    Filed: July 12, 1976
    Date of Patent: March 21, 1978
    Assignee: J. A. Preston Corporation
    Inventor: Joseph M. Breuer
  • Pinch gauge
    Patent number: D247554
    Type: Grant
    Filed: July 12, 1976
    Date of Patent: March 21, 1978
    Assignee: J. A. Preston Corporation
    Inventor: Joseph M. Breuer
  • Child's crawler
    Patent number: D261378
    Type: Grant
    Filed: June 11, 1979
    Date of Patent: October 20, 1981
    Assignee: J. A. Preston Corporation
    Inventor: Timothy J. Bergeron
  • Bicycle exerciser
    Patent number: D281710
    Type: Grant
    Filed: May 23, 1984
    Date of Patent: December 10, 1985
    Assignee: J. A. Preston Corporation
    Inventor: John R. Kirby
  • Platform for rehabilitation exercise and therapy
    Patent number: D282775
    Type: Grant
    Filed: September 23, 1983
    Date of Patent: February 25, 1986
    Assignee: J. A. Preston Corporation
    Inventor: Charlton A. Floyd, Sr.