Patents Assigned to Tretorn AB
  • Shoesole for golf shoe
    Patent number: 4885851
    Abstract: This invention relates to shoesoles for the bottom of golf shoes and especially to shoesoles provided with, in addition to conventional spikes at the forepart and heel, ground-engaging protrusions distribution along the inner and outer marginal edges of the soles to enhance the stance of the golfer.
    Type: Grant
    Filed: December 30, 1987
    Date of Patent: December 12, 1989
    Assignee: Tretorn AB
    Inventor: William R. Peterson
  • Athletic shoe
    Patent number: 4878300
    Abstract: An athletic shoe provided with a bottom structure embodying spaced, parallel midsole members, a shock-dispersing plate disposed therebetween and an outsole attached to the lower one of the midsole members, characterized in that the lowermost one of the midsole members and the outsole member contain at the heel vertical openings centered within the heel area which penetrate the layers such as to permit the shock-dispersing plate to yield in the area of the openings.
    Type: Grant
    Filed: July 15, 1988
    Date of Patent: November 7, 1989
    Assignee: Tretorn AB
    Inventor: Robert D. Bogaty
  • Dynamic support for an athletic shoe
    Patent number: 4854057
    Abstract: An athletic running shoe having a polymeric foamed midsole and a special stiffening formation formed separately of the midsole and received between two layers of the midsole to reduce non-uniform midsole degradation.
    Type: Grant
    Filed: July 15, 1988
    Date of Patent: August 8, 1989
    Assignee: Tretorn AB
    Inventors: Kenneth W. Misevich, Rob R. McGregor, Anthony J. Corrao
  • Golf shoe bottom
    Patent number: D310294
    Type: Grant
    Filed: December 30, 1987
    Date of Patent: September 4, 1990
    Assignee: Tretorn AB
    Inventor: William R. Peterson