Patents by Inventor Gerald Grijak

Gerald Grijak 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: 4776585
    Abstract: An electrically lighted jump rope is disclosed with a flexible tube of light transmitting material and handles rotatably mounted thereon at each end. A tube fitting and handle fitting at each end are coupled together for rotation relative to each other about an axis of rotation extending axially of the tube. A battery is disposed in one of the handles and a lighting circuit including a plurality of LEDs extends into the tube. The battery is connected to the lighting circuit through brushes and slip rings on the tube and handle fittings.
    Type: Grant
    Filed: March 27, 1987
    Date of Patent: October 11, 1988
    Inventors: John R. K. Maleyko, Gerald Grijak
  • Patent number: 4693018
    Abstract: An extendible boot is provided with an upper having a base portion and an extendible portion. The extendible portion comprises a flexible sleeve joined to the base portion by a peripherally extending joint. The sleeve is rollable from its upper end to form an annular roll at the joint to provide an unextended boot. The sleeve is unrollable from the annular roll to a higher position and thereby provides an extended boot. A cuff has a fixed end connected with one of the portions in the vicinity of the joint and is adapted to be folded over the annular roll. A hook and loop fastener or a snap fastener is provided to hold the cuff in its folded position to retain and conceal the annular roll of the sleeve.
    Type: Grant
    Filed: February 20, 1986
    Date of Patent: September 15, 1987
    Inventors: John R. K. Maleyko, Gerald Grijak
  • Patent number: 4586271
    Abstract: An extendible boot is provided with an upper having a base portion and an extendible portion. The extendible portion comprises a flexible sleeve joined to the base portion by a peripherally extending joint. The sleeve is rollable from its upper end to form an annular roll at the joint to provide an unextended boot. The sleeve is unrollable from the annular roll to a higher position and thereby provides an extended boot. A cuff has a fixed end connected with one of the portions in the vicinity of the joint and is adapted to be folded over the annular roll. A hook and loop fastener or a snap fastener is provided to hold the cuff in its folded position to retain and conceal the annular roll of the sleeve.
    Type: Grant
    Filed: August 10, 1984
    Date of Patent: May 6, 1986
    Inventors: John R. K. Maleyko, Gerald Grijak