Citizen Watch Company, Ltd.

Junichi Nishikawa

Tomomi Murakami

Yutaka Shoji

Toshio Murata

Masataka Matsumoto

Tadao Enomoto

Nobuyuki Uehara

Michihiro Iwamura

Eiichi Kitabayashi

A sensor housing pipe is secured to a back of a watch at a recess formed on an underside of the back. A sensor is housed in the sensor housing pipe. A sensor lid is provided for securing the sensor in the sensor housing pipe. The sensor lid has openings for communicating the sensor with the outside of the watch.

Watch having a sensor

A structure comprising a watch case; a pair of lugs each extending from the watch case and having an upper surface in a lower position than the upper surface of the watch case; a band; and a connector secured to the underside of the end portion of the band, the band being closely attached to the watch case by placing the end of the band on the upper surfaces of the lugs and tightening cone point screws into threaded holes provided near distal ends of the sides of the lugs so that the cone points of the screws hold firmly a pair of attachment openings provided in said connector against the watch case.

Watch case and band attachment structure

A structure of a rotating mechanism for a watch case having a time display section, comprising a case body internally accommodating the time display section and having a lower opening, a back cover fitted into the lower opening of the case body, a retining ring secured to a lower portion of the case body, and a band attaching base engaging with the case body by being clamped between the retaining ring and the case body. The case body is adapted to rotate with respect to the band attaching base.

Structure of rotating mechanism for watch case

Growing community of inventors

Tanashi, Japan

Junichi Nishikawa