发明名称 |
DECOMPRESSION OF PRESSURE CHAMBERS, PARTICULARLY THE DECOMPRESSION OF ACTUATING PRESSURE CHAMBERS INE CAGE HOLDING MEANS |
摘要 |
<p>Means for controlling the decompression of a pressure chamber, such as an actuating pressure chamber of mine cage holding apparatus, including an outlet passage adapted to communicate with the interior of the pressure chamber; a valve seat associated with the outlet passage; a movable valve member movable into and out of engagement with the seat, the valve member or a part movable therewith being adapted to obstruct the outlet passage during at least part of the travel of the valve member away from the seat with a resistance to the release of pressure from the pressure chamber which decreases with increasing displacement from the seat; a control fluid chamber; a control piston movable in the control chamber and adapted to urge the valve member towards engagement with its seat under the influence of fluid pressure in the control chamber; and a vent from the control chamber through which fluid can escape.</p> |
申请公布号 |
CA1044617(A) |
申请公布日期 |
1978.12.19 |
申请号 |
CA19760262382 |
申请日期 |
1976.09.30 |
申请人 |
PATENT PRODUCTS HYDRAULICS (PROPRIETARY) LIMITED |
发明人 |
HORNE, PETER N. |
分类号 |
B66B17/34;(IPC1-7):66B1/00;66B1/36 |
主分类号 |
B66B17/34 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|