HYDRAULICALLY-ACTUATED RECIPROCATING DEVICE
申请(专利)号： ZA19750007499
专利号： ZA757499B 主分类号： B25D
申请权利人： REYROLLE
HYDRAULICS LIMITED; BOART
INTERNATIONAL LIMITED
公开国代码： ZA 优先权国家： GB
摘 要：
1526048 Hydraulic percussive tool RHL HYDRAULICS Ltd and BOART
INTERNATIONAL Ltd 28 Nov 1975 [29 Nov 1974] 51873/74 Heading B4C An hydraulic percussive tool comprises a double-acting piston 60, a control valve 35, an hydraulic accumulator 23, the
piston having recessed portions which co-operate with ports 50-52 in the cylinder which in turn lead to an auxiliary valve 83 which provides a restriction such that a delay is produced which allows the
hydraulic accumulator to store energy to propel the piston in its driving stroke. A ratchet drive is provided to rotate the piston and this intermittently rotates the drill steel through a splined drive. A bore is provided through the piston and drill
申请日： 1975-11-28 公开公告日： 1976-11-24
分类号： B25D
发明设计人： BRIAN MOFFETT;
DENIS MICHAEL FEWSTER;
JOHN GRAHAM DAVIES;
DENIS MICHAEL FEWSTER; DAVIES JOHN GRAHAM;
JOHN GRAHAM DAVIES 申请国代码： ZA
优先权： 19751128 GB
5187374
摘 要 附 图：
steel to flush the bore hole. The auxiliary valve 83 is controlled by a cam 81 rotatable by a handle 78 against the action of a spring 83a. 主权项：
权 利 要 求 说 明 书
【HYDRAULICALLY-ACTUATED RECIPROCATING DEVICE】的权利说明书内容是......请下载后查看
HYDRAULICALLY-ACTUATED RECIPROCATING DEVICE
