发明名称 |
Pneumatisk öppnings- och stängningsanordning |
摘要 |
A pneumatic unlocking and closing apparatus for doors has a soft braking phase at each end position. The apparatus includes a pneumatic piston-cylinder unit having a working chamber acting on a large piston area and a return chamber acting on a piston area which is reduced by the piston rod. The apparatus is operated by a substantially closed pressure actuation system having a compressed air pump creating both a working pressure in the working chamber and a less high counter pressure in the return chamber. The pressure system includes a first or plus tank having a certain predetermined high pressure to act as the working pressure in the working chamber for expelling the piston during the ordinary working stroke thereof; and a second or minus tank into which the air of the working chamber is evacuated when the piston is to be returned to its fully retracted position. |
申请公布号 |
SE9601261(L) |
申请公布日期 |
1997.10.02 |
申请号 |
SE19960001261 |
申请日期 |
1996.04.01 |
申请人 |
SAFE NET I HARADS AB |
发明人 |
HARJU BERT |
分类号 |
F15B15/22;E05F15/56;F15B11/048;F15B15/26;(IPC1-7):F15B15/22 |
主分类号 |
F15B15/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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