发明名称 |
HYDRAULIC JACK WITH MECHANICAL SAFETY BLOCK |
摘要 |
To block the piston (4) in any position of its travel, the piston and relative stem (4 min ) has a cavity which extends axially from the surface of the piston head for a length approximately equal to the travel of the piston. Within the said cavity there is a spherical turning screw (6) fixed to the centre of the bottom wall of the said cavity. The said screw is engaged in a reversible manner with its collar (8) which is fixed to the extremity of a hollow shaft (10) which protrudes beyond the cylinder head wall (12) of the jack. To the projecting terminal piece (24) is fixed a free wheel (26) of which one part is keyed into the said terminal piece and the other part is a ring with a toothed profile. A blocking catch with an anti-engagement system may be engaged by hydraulic or manual command in the teeth of the said toothed profile. |
申请公布号 |
DE3277581(D1) |
申请公布日期 |
1987.12.10 |
申请号 |
DE19823277581 |
申请日期 |
1982.06.15 |
申请人 |
SELENIA INDUSTRIE ELETTRONICHE ASSOCIATE S.P.A. |
发明人 |
PERUZZI, ARMANDO |
分类号 |
B66F3/30;F15B15/14;F15B15/26;(IPC1-7):B66F3/30 |
主分类号 |
B66F3/30 |
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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