Patents by Inventor Leonard T. Shustack

Leonard T. Shustack 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).

  • Patent number: 4932677
    Abstract: A mobile cooler having a flexible tank track for moving the cooler over sand or irregular ground surfaces. The track members of the flexible tank track are normally made of rubber and are recessed into the outermost surfaces of the side walls of the insulated container to improve appearance of the cooler and to provide minimum obstruction to other articles when the cooler is stored in trunks or other compartments of automobiles. A retractable cord, attached to a spring loaded pulley recessed into the lower front wall of the cooler, facilitates towing of the cooler from place to place in a picnic area. A vertical levelling slot in each of the front axle supports keeps the track members in maximum contact with the surface of the ground during the towing process. Conventional pivotable handles attached to the front and back walls of the insulated container allow the cooler to be easily lifted or lowered in storing or retrieving the unit from storage.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: June 12, 1990
    Inventor: Leonard T. Shustack
  • Patent number: 4635929
    Abstract: A Karate exercising bag which provides resistance to the four basic movements in that art of self defense. The exercising bag is so mounted that it responds laterally with adjustable resistance when punched or kicked by the person exercising. The exercise bag has upper and lower pole members by which the exercising bag is suspended vertically between semicircular upper and lower mounting frames. The mounting frames are interconnected and supported by two or more vertical support members. Spring-loaded swivel means is provided at the top and bottom of the pole members to provide lateral resistance to any twisting movements imparted to the exercising bag by the exerciser and to return the exercising bag to its original position when at rest. In addition, shock absorbers are mounted at right angles to the pole members to provide resistance to any rearward movement imparted to the exercising bag by the exerciser and to return the exercising bag to its original position when at rest.
    Type: Grant
    Filed: May 28, 1985
    Date of Patent: January 13, 1987
    Inventor: Leonard T. Shustack