Hammer keyboard system and chassis

Details Hammer keyboard system and chassis Hammer keyboard system and chassis

2006-11-28

2006-11-28

Donovan, Lincoln (Department: 2837)

Music

Instruments

Stringed

C084S433000

Reexamination Certificate

active

07141729

ABSTRACT:
A hammer with simplified structure and reduced costs that maintains its capability as a mass body to impart a touch weight. The hammer is configured such that it is possible to fix the two mass plates to the metal base plate by means of a single rivet. Therefore, the number of places in which the rivet holes are drilled and disposed in both mass plates and the metal base plate are kept to a minimum, and it is possible to limit the lightening of the weight of both mass plates and the metal base plate by that amount. As a result, since it is possible to configure the base plates and the metal base plate with smaller dimensions while maintaining the required weight, the capability as a mass body to impart a touch weight can be maintained while preventing the enlarging of the hammer overall.

REFERENCES:
patent: 6191351 (2001-02-01), Niitsuma
patent: 10254432 (1998-09-01), None

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