| 发明名称 |
Cavity back iron with vibration dampening material in rear cavity |
| 摘要 |
A cavity back iron with vibration dampening material in the cavity. The material is a polyurethane having a hardness of 20-50 Shore D, a flexural modulus of 1,000-50,000 p.s.i., a percent elongation of 100-600, and a tensile strength of 2,000-8,000 p.s.i.
|
| 申请公布号 |
US5290036(A) |
申请公布日期 |
1994.03.01 |
| 申请号 |
US19930045358 |
申请日期 |
1993.04.12 |
| 申请人 |
FENTON, FRANK;SULLIVAN, MICHAEL J. |
发明人 |
FENTON, FRANK;SULLIVAN, MICHAEL J. |
| 分类号 |
A63B53/04;A63B59/00;(IPC1-7):A63B53/04 |
主分类号 |
A63B53/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
