The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 06, 2016
Filed:
Jun. 18, 2014
Kabushiki Kaisha Kawai Gakki Seisakusho, Hamamatsu-shi, Shizuoka, JP;
Yasushi Terai, Hamamatsu, JP;
KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO, Hamamatsu-shi, JP;
Abstract
Obtained is a structure of a piano action by which excellent playing reproducibility is secured even in a case of playing by repeatedly striking a key at an extremely high speed. In a piano action including a plurality of hammersfor striking keys, hammer shanksthat support the hammers turnably, hammer railsthat restrict the hammer shanksfrom turning after the hammers strike strings, and hammer cushions (shock absorbing materials)that are placed on the hammer rails and absorb motion energy generated by collision with the hammer shanks, the hammer cushions (shock absorbing materials)are disposed at an angle so as not to become parallel to contact surfaces of the hammer shanks