Citizen Watch Company, Ltd.

Satoru Fukutome

Motoyuki Saito

Hideo Hatanaka

Tomomi Murakami

Yasuo Maekawa

Hiromichi Nagata

Masakazu Funazawa

An alarm device for a watch mounted in a recess provided in an upper portion of the watch case, for example in the upper portion of the band connecting portion of the watch case. The alarm device comprises a vibration plate secured to the bottom of the recess, a watertight sealing member, a cover for the vibration plate and securing means such as a screw for fixing the vibration plate to the recess through the watertight sealing member.

Acoustic alarm device for watches

In a push-button device having a waterproofing O-ring disposed between the inner wall of a pipe and the shaft portion of a button body, the structure of said push-button device characterized in that a non-metallic, resilient sleeve for preventing the invasion of dust and for restoring the push-button is disposed in a clearance formed between the head portion of the button body and a stepped portion provided on said inner wall of said pipe.

Structure of push-button device

An electronic wristwatch case construction in which a sound-emitting cover has a battery replacement hole and a plurality of sound-emitting holes. A fixing ring is disposed in concentric relationship with respect to the battery replacement hole of the sound-emitting cover, and a vibrating plate cooperating with a piezoelectric vibrating element for an alarm is spaced from the sound-emitting cover. A battery hatch is detachably fastened to the fixing ring, and a sealing ring is disposed between the battery hatch and the fixing ring to provide a water-tight sealing therebetween.

Electronic wristwatch case

A packing means for waterproofing a watch case having a non-conductive, flexible ring portion and a conductive yet flexible arm member is disclosed. The packing device is disposed in a watch case and allows for an electrical connection to be made between the watch and an external device. The ring member is made of a resilient, non-conductive, flexible material and is disposed in the watch case so as to be sandwiched between the top and bottom members thereof. At least one arm member also made of a resilient flexible material having first and second ends is coupled to the ring and extends into the center thereof. However, the arm member is conductive and electrically couples the watch (the internal components) with the external device. The arm member is coupled to the ring member such that the substantially watertight seal in the watch case is not destroyed. By the use of the instant packing means of the present invention, a substantially waterproof seal in the watch case is achieved while permitting an external device to be electrically and flexibly coupled to the watch without destruction of the waterproof seal.

Growing community of inventors

Tanashi, Japan

Satoru Fukutome