发明名称 PIANO HAMMER AND METHOD FOR MAKING SAME
摘要 PIANO FORTE HAMMER AND METHOD FOR MAKING SAME A piano forte hammer has an elongated head with a nose defining side surfaces, and a felt body disposed to extend about the nose. The felt body has a nose region for contact upon a piano string and first and second tall regions having surfaces affixed in contact upon the head side surfaces. The felt body, in the tall regions only, contains a predetermined measured amount of acrylic copolymer, the felt body nose region being essentially free of the acrylic copolymer. The hammer may be formed by a process including the steps of; providing a first volume of aqueous solution containing the predetermined measured amount of acrylic copolymer in a slot; disposing a first tall region of the felt body, prior to assembly about the nose, in solution in the slot; allowing the felt body to draw essentially all of the solution from the slot, into the first tall region only, by natural wicking action; and repeating the process for the second tall region of the felt body, the nose region being left essentially free of acrylic copolymer.
申请公布号 CA2016060(C) 申请公布日期 1994.05.24
申请号 CA19902016060 申请日期 1990.05.04
申请人 STEINWAY MUSICAL PROPERTIES, INC. 发明人 LOMBINO, JAMES M.
分类号 G10C3/18;(IPC1-7):G10C3/18 主分类号 G10C3/18
代理机构 代理人
主权项
地址