Patents by Inventor Shigeo Tsuchigane

Shigeo Tsuchigane 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).

  • Buckle for watch bands
    Patent number: 5191685
    Abstract: A buckle having a lock mechanism for a watch with opposite bands is disclosed. The lock mechanism (40) is provided in a frame member (20) secured to one of the bands (37). The lock mechanism comprises a lock lever (41) having a locking portion and a pressing-up lever (42) having a pressing-up slant, each of the levers being laterally slidably mounted in the frame member, and a spring (43) provided so as to outwardly urge both the levers. A clasp (30) attached to the other band has a lock member corresponding to the lock lever and a pressing-up slant member (34) corresponding to the pressing-up lever. The lock lever engages with the lock member to lock the clasp. When the lock is released, the pressing-up lever pushes up the pressing-up slant member, thereby disengaging the clasp. The locking portion of the lock lever and the pressing-up slant of the pressing-up lever are disposed so as to overlap with each other.
    Type: Grant
    Filed: January 25, 1990
    Date of Patent: March 9, 1993
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Yasushi Aoki, Masaaki Azuma, Shigeo Tsuchigane, Akihiro Tanaka, Katsuzo Hirayama, Eiichiro Tanaka