Wooden bars arranged for percussion instruments

Details Wooden bars arranged for percussion instruments Wooden bars arranged for percussion instruments

2005-01-04

2005-01-04

Hsieh, Shih-Yung (Department: 2837)

Music

Instruments

Rigid vibrators

C084S403000, C084S404000, C084S433000

Reexamination Certificate

active

06838604

ABSTRACT:
A prescribed number of bars are arranged in a percussion instrument such as a xylophone and marimba, wherein each bar is formed by a base layer, a fiber reinforced plastic layer, and a surface layer that are combined together using an epoxy adhesive therebetween. Both the base layer and surface layer is made of the prescribed hardwood material such as rosewood, hard birch, padauk, and Chinese quince, while the fiber reinforced plastic layer is formed by laminating one or more fiber reinforced plastic sheets, each of which is formed by impregnating and hardening thermosetting epoxy resin with fibers. All fibers can be aligned in a single direction slanted to the longitudinal direction of the bar. Alternatively, fibers are woven in two directions rectangularly crossing each other in a cloth form. Thus, it is possible to improve bars in striking durability as well as in sound quality and design.

REFERENCES:
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patent: 5333527 (1994-08-01), Janes et al.
patent: 5469769 (1995-11-01), Sawada et al.
patent: 6365812 (2002-04-01), McGill
patent: 51 127712 (1976-11-01), None
patent: 59 10994 (1984-01-01), None
patent: 60 159894 (1985-08-01), None

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