Patents by Inventor Hirotaka Nishijima

Hirotaka Nishijima 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: 4669222
    Abstract: A roller unit of a window regulator is movably engaged with a guide rail of a U-shaped cross section. The guide rail has a pair of parallel side walls one of which is formed with a longitudinal groove of a V-shaped cross section and the other is formed to be planar. The roller unit includes a pair of convexly surfaced rollers in rolling contact with the grooved side wall and a flat surfaced roller in rolling contact with the planar side wall. The flat surfaced roller is movable toward and away from the planar side wall and urged against the same by a spring.
    Type: Grant
    Filed: November 21, 1985
    Date of Patent: June 2, 1987
    Assignees: Nissan Motor Co., Ltd., Ohi Seisakusho Co., Ltd.
    Inventors: Hiroshi Ujihara, Hirotaka Nishijima, Satoru Ugawa, Tomotaka Kinoshita, Satoshi Obushi, deceased