Kabushiki Kaisha Kawai Gakki Seisakusho

Riichi Kitashima

Muneo Ishida

Shinichiro Miwa

Masaji Kimura

Manabu Arimori

Masakazu Matsumoto

Shinji Tagaki

Makoto Kanemitsu

Hidetaka Hanajima

Yutaka Nakao

Makoto Nakayama

Electronic upright piano and a method of manufacture thereof

Method of assembling a grand piano

To provide an electronic piano maintaining a compact appearance and providing the key touch equivalent to that of an acoustic piano. A hammer equivalent member is composed of a butt, a L-shaped member and a catcher shank. When the butt is pushed up by a jack responsive to the key depression, the hammer equivalent member starts rotating in a direction reverse to the rotary direction of a depressed key. Subsequently, after the jack leaves the butt, the hammer equivalent member continues to be rotated inertially. By contacting the projection of the L-shaped member of the hammer equivalent member, a stopper stops the inertial movement of the hammer equivalent member. The hammer equivalent member is almost equivalent to the hammer assembly of the usual acoustic piano in inertial moment and the angle formed by the center of gravity relative to a virtual perpendicular passing a center pin. Furthermore, the hammer equivalent member is shorter than the hammer assembly in appearance.

Electronic piano

Method of assembling an upright piano

An electric piano having a casing provided with a frame made as a casting or the like with a plurality of strings stretched on the piano and supported at intermediate portions by a bridge member. A plurality of hammers driven by respective keys strikes the strings and pickups are provided for detecting vibrations of the strings. An amplifier is connected to the pickups and a speaker is connected to the amplifier. The bridge member is supported on supporting members attached to the frame through shock absorbing members of rubber or the like, and the pickups are constituted by piezoelectric elements mounted at any desired position in the supporting members.

Electric piano

Growing community of inventors

Shizuoka-ken, Japan

Riichi Kitashima