Patents by Inventor Fred C. Merrifield

Fred C. Merrifield 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: 4271609
    Abstract: An improved snowshoe includes a rigid soleplate swingably mounted for pivotal motion about the forward edge of a rigid cross member extending transversely across and adjustably affixed to the peripheral frame of the snowshoe. A strap binding assembly is mounted to the upper surface of the soleplate to secure a wearer's boot to the soleplate. A spring assembly resiliently retains the soleplate and urges it forwardly about the forward edge of the cross member to augment the conventional action of the snowshoe in lifting the leading edge of the snowshoe upwardly with each step to thereby avoid catching of the leading edge in loose snow.
    Type: Grant
    Filed: November 20, 1979
    Date of Patent: June 9, 1981
    Inventor: Fred C. Merrifield
  • Patent number: 4085529
    Abstract: A snowshoe has a tubular, elongated frame with spaced side portions and rounded toe and heel portions. A plurality of discrete tie strips bind a heel decking and a toe decking comprised of a resin-impregnated nylon fabric to the frame. An adjustable frame cross member is positioned in a space between the toe and heel decking and carries the snowshoe binding. The binding is constructed to loosen the heel strap on the wearer's boot when the heel is tilted forwardly and upwardly while walking in the snowshoe to allow lateral movement of the wearer's heel but securely holds the boot in the desired position when the heel is rotated back down into the rest position on the snowshoe.
    Type: Grant
    Filed: November 19, 1976
    Date of Patent: April 25, 1978
    Inventor: Fred C. Merrifield