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:
Nov. 03, 1992
Filed:
Dec. 30, 1991
Noriyuki Sakakibara, Hamana, JP;
Kawai Gakki Seisakusho Co., Ltd., Hamamatsu, JP;
Abstract
The present invention enables accurate measuring and regulating operations to be carried out by measuring with a rule the quantity of movement of a hammer in a grand piano during an action mechanism regulating operation for attaining the normal striking of wires with the hammer. The wires S provided in a tensed state are held between the lower surface of a mount 4 and a locking rod 3 on a measuring tube 2 pressure-contacting the same lower surface, and the lower end of a measuring rod slidingly moved in the measuring tube is placed on the top end of the hammer, the quantity of movement of the hammer being then read directly with reference to the relative positions of a scale mark 8 shown on the measuring rod 1 and the upper end of the measuring tube 2.