Patents by Inventor Lancelot P. Clark

Lancelot P. Clark 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: 4342160
    Abstract: A boot or shoe comprises a preformed portion and a portion which is molded in one piece on to the pre-formed portion and which includes the sole unit and those parts of the upper not constituted by the pre-formed portion. The pre-formed portion comprises side panels extending along each side of the shoe and a sock for underlying the foot, which sock interconnects the side panels and the side panels and sock may be made in one piece or in separate pieces which are fastened together, as by sewing, before the molded portion is molded on to the pre-formed portion. The molded portion is made from a plastics material, e.g. polyurethane, and the material does not overlap the inner face of the pre-formed portion but overlaps at least some of the marginal regions of the two side panels. The sock lies in the top surface of the sole unit. The two side panels may together extend also round the heel region of the upper and the plastics material may cover the outer face of the panels in the heel region.
    Type: Grant
    Filed: May 28, 1981
    Date of Patent: August 3, 1982
    Assignee: Clarks Limited
    Inventor: Lancelot P. Clark
  • Patent number: 4295238
    Abstract: A boot or shoe comprises a pre-formed portion and a portion which is moulded in one piece on to the pre-formed portion and which includes the sole unit and those parts of the upper not constituted by the pre-formed portion. The pre-formed portion comprises side panels extending along each side of the shoe and a sock for underlying the foot, which sock interconnects the side panels and the side panels and sock may be made in one piece or in separate pieces which are fastened together, as by sewing, before the moulded portion is moulded on to the pre-formed portion. The moulded portion is made from a plastics material, e.g. polyurethane, and the material does not overlap the inner face of the pre-formed portion but overlaps at least some of the marginal regions of the two side panels. The sock lies in the top surface of the sole unit. The two side panels may together extend also round the heel region of the upper and the plastics material may cover the outer face of the panels in the heel region.
    Type: Grant
    Filed: November 16, 1979
    Date of Patent: October 20, 1981
    Assignee: Clarks Limited
    Inventor: Lancelot P. Clark