Patent No. 6,772,481
Issued: August 10, 2004
Inventors: Oshima; Kazuyoshi (Naruto-machi, JP); Koshikawa; Shinichiro (Yokaichiba, JP); Imai; Katsuya (Tako-machi, JP)
Assignee: Sugatsune Kogyo Co., Ltd. (Tokyo, JP)
A hinge assembly (1) used for a foldable cellular telephone, comprising a pair of abutment members (5, 6), a bias means (7) biasing the abutment members so that the abutment members are pressingly brought into contact with each other, a projection (54) extending in the radial direction of one abutment member (5), and a recess (64) allowing the access of the projection thereto formed in the other abutment member (6), wherein the recess (64) is formed of an inside recess and an outside recess on the radial inner and outer sides of the other abutment member, and the inside recess is formed along the center line of the other abutment member and the outside recess is formed so that the width thereof is increased from the inside recess to the outside so that the side surface of the recess is generally formed in a dogleg-like configuration.
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