Patent · US Active

Hammer device and keyboard device for electronic keyboard instrument

US9006549B2 · kind B2 · utility

10Cited by

1References

1Claims

0Family size

Assignee

KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO · JP

Inventors

Akihiro Suzuki · Ebeye, US
Hideyuki Ishida · Hamamatsu, JP

Key dates

Filing date	Nov 29, 2012
Grant date	Apr 14, 2015
Priority date	—
Expiry date	Jul 28, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG10H1/346
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A hammer device of an electronic piano with keys which swing in accordance with key depression, includes a hammer support that is made of a synthetic resin and has a fulcrum shaft, and a hammer having a shaft hole part for being fitted on the fulcrum shaft and configured to pivotally move about the fulcrum shaft in a manner interlocked with the swinging key. The fulcrum shaft has an outer peripheral surface formed by a pair of arcuately-curved surface portions opposite to each other and a pair of planar surface portions each extending between the pair of arcuately-curved surface portions and parallel to each other.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.