发明名称 |
Method for producing sound bar for percussive musical instruments |
摘要 |
In construction of a FRP sound bar preferably by lamination for percussive musical instruments, 30 to 80% by volume of reinforcing fibers are oriented in a resin matrix at least in the longitudinal direction of the sound bar and a plurality of longitudinal pores are almost uniformly distributed over the entire cross section of the sound bar, for easy and low cost production with ideal sound extension.
|
申请公布号 |
US4718964(A) |
申请公布日期 |
1988.01.12 |
申请号 |
US19860936906 |
申请日期 |
1986.12.02 |
申请人 |
NIPPON GAKKI SEIZO KABUSHIKI KAISHA |
发明人 |
SAWADA, SHUICHI;MURASE, YOSHIHIKO |
分类号 |
B29C69/00;B29L9/00;B32B5/00;B32B17/04;B32B37/00;G10D13/00;G10D13/08;(IPC1-7):B32B31/18 |
主分类号 |
B29C69/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|