发明名称 |
Valveless pneumatic hammer |
摘要 |
A valveless pneumatic hammer comprises a hollow casing having a backhead assembly at one end and a bit assembly at the other, and a piston reciprocable in the casing. There is a chamber divider at the backhead end of the casing which co-operates with the piston for conducting fluid under pressure into alternate chambers, one at each piston end, for reciprocation of the piston. A chamber divider is located within the casing by a locating split ring which holds the chamber divider axially against the backhead assembly. The chamber divider also has a recess in the end thereof nearest the piston which together with a bore in this piston end, comprises the fluid chamber at this end of the casing.
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申请公布号 |
US4402370(A) |
申请公布日期 |
1983.09.06 |
申请号 |
US19810263996 |
申请日期 |
1981.05.15 |
申请人 |
GEIN, ABRAHAM;GIEN, BERNARD L. |
发明人 |
GEIN, ABRAHAM;GIEN, BERNARD L. |
分类号 |
E21B4/14;(IPC1-7):B25D9/16 |
主分类号 |
E21B4/14 |
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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