发明名称 Percussion device actuated by a pressurized non-compressible fluid
摘要 According to the invention, the body of the apparatus includes a flow rate adjustment device including a calibrated opening provided on a high-pressure fluid supply circuit, a bore formed in the body and in which is mounted a slider having a first face located in a first chamber connected to a high-pressure fluid supply circuit upstream from the calibrated opening and a second face located in a second chamber connected to the high-pressure fluid supply circuit downstream from the calibrated opening, the bore receiving the slide including an annular groove connected to a low pressure feedback circuit. The slider is adapted for connecting the annular groove to the first chamber when the pressure difference on either side of the calibrated opening increases beyond a predetermined value in order to divert a portion of the fluid flow supplied by the high-pressure fluid supply circuit to the feedback circuit.
申请公布号 US8167055(B2) 申请公布日期 2012.05.01
申请号 US20080451186 申请日期 2008.05.21
申请人 PIRAS BERNARD;MONTABERT 发明人 PIRAS BERNARD
分类号 B25D9/12 主分类号 B25D9/12
代理机构 代理人
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