Citizen Watch Company, Ltd.

Tsunetoshi Sekiguchi

Osamu Matsumura

Ryo Namiki

Yutaka Kato

Hiroshi Koide

Masahiko Waki

Tsutomu Noguchi

Yasuo Maekawa

Hisao Yamagata

Kisuke Watanabe

A solar battery timepiece has a structure of a module, a base plate on the module, a solar battery cell on the base plate, an insulating flexible sheet provided with a print wiring and interposed between the base plate and the solar battery cell, and a dial ring attached to the peripheral edge of the base plate whereby the solar battery timepiece may be made with a reduced thickness, small in size, simple in construction, shock resistant and reliable in operation.

Solar battery timepiece

A structure for fixing a watchglass of a watch case, which comprises a watchglass fixing member having a ring-shaped recess and a flange formed at an upper portion of said recess, a watchglass having an outer diametric surface formed with an inclined guiding surface below said outer diametric surface, and a synthetic resin ring disposed in said recess of said watchglass fixing member and sandwiched between said recess and said watchglass and having a protrusion formed when said watchglass is press fitted into said synthetic resin ring, said protrusion serving as means for retaining said watchglass in a fixed place.

Watchglass fixing structure

A solar battery timepiece has a structure of a module, a base plate on the module, a solar battery cell on the base plate, an insulating flexible sheet provided with a print wiring and interposed between the base plate and the solar battery cell, and a dial ring attached to the peripheral edge of the base plate whereby the solar battery timepiece may be made thin in thickness, small in size, simple in construction, shock resistant and reliable in operation.

A push button device for a watch casing comprising a watch casing, a through hole formed on a side wall of the watch casing, through which a push button is inserted to be secured, a pipe fitted to the through hole and provided and a guide surface inside the outer edge thereof, the push button having a pushing portion at one end thereof and a groove at the other end thereof and an engaging ring elastically deformable and fitted to the groove. The engaging ring locks the button in position thereby providing useful and effective push button device for a watch casing which is easy to assemble and is low in cost.

Push button device for watch casing

A watch case including external and internal case bands, crystal, and flexible packing wherein provision is made of a horizontal groove for a leaf spring and vertical groove for a lever and thereby being easily assembled and disassembled by means of the lever.

Growing community of inventors

Sayama, Japan

Tsunetoshi Sekiguchi