| 发明名称 |
CENTRAL VACUUM SYSTEM WALL VALVE |
| 摘要 |
<p>A central vacuum system wall valve is described which includes a valve door capable of being pivotally cammed to open position by its interaction with the roomside hose as this hose is moved to inserted position within the wall valve.</p> |
| 申请公布号 |
CA2056155(C) |
申请公布日期 |
2000.02.08 |
| 申请号 |
CA19912056155 |
申请日期 |
1991.11.25 |
| 申请人 |
|
发明人 |
HOUSTON, WILLIAM S. |
| 分类号 |
A47L5/38;A47L9/24;F16L37/60;(IPC1-7):A47L9/00;F16L37/38 |
主分类号 |
A47L5/38 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
