Patents by Inventor Mark J. Gruenspecht

Mark J. Gruenspecht 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: 4690651
    Abstract: An inflatable aquatic device has a single inflatable, flotation chamber with a rigid flange element circumscribing the periphery of the inflatable chamber and a flexible lower sheet also attached to the chamber. The aquatic device conforms generally to a size for utilizing on the hand of a user and the flat, lower sheet, which is adhered at its edges to the inflatable chamber, is formed with apertures through which fingers and thumb of the user may pass, thereby permitting the user to utilize his hand for grasping objects and the like and yet still have the flotation chamber firmly attached thereto. The flange element is tapered so that it is deformed from a planar two-dimensional surface into a curved, three-dimensional surface to form a scoop-like element on the lower side and a curved water run-off channel on the upper side.
    Type: Grant
    Filed: January 27, 1986
    Date of Patent: September 1, 1987
    Inventors: Sam Samson, Mark J. Gruenspecht
  • Patent number: D299261
    Type: Grant
    Filed: July 22, 1986
    Date of Patent: January 3, 1989
    Assignee: Sea Hands
    Inventors: Mark J. Gruenspecht, Sam Samson
  • Patent number: D299262
    Type: Grant
    Filed: July 22, 1986
    Date of Patent: January 3, 1989
    Assignee: Sea Hands
    Inventors: Mark J. Gruenspecht, Sam Samson