Patents by Inventor Henk Schram

Henk Schram 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: 5121840
    Abstract: The present invention relates to valves for fluid inflatable bodies and packaging with such valves. The valve has an outer plate, a flat sealing ring and an inner plate with a valve body. The valve body seating and outer plate seating which contact the sealing rim have sharp peripheral ribs which are coaxial with the fluid inlet and of different diameters.
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: June 16, 1992
    Inventor: Henk Schram
  • Patent number: 4966185
    Abstract: A valve for an orifice in an inflatable body includes an outer plate which has a central gas passage and is attached to the outside of the body and extend across the orifice, an inner plate which defines a bore hole therein and is attached to the inside of the body around the orifice, a central valve body portion within the bore hole and attached to the inner plate by wings which define gas inlets therebetween, and a sealing ring positioned between the central valve body portion and the outer plate so as to close the central gas passage in the outer plate.
    Type: Grant
    Filed: January 6, 1989
    Date of Patent: October 30, 1990
    Inventor: Henk Schram