-
公开(公告)号：EP0080964A3
公开(公告)日：1985-01-16
申请号：EP82630092
申请日：1982-09-21
申请人： Justus, Edgar J.
发明人： Justus, Edgar J.
CPC分类号： B25D17/24 , B25D9/12 , B25D9/20 , B25D2209/005
摘要： A linear actuator includes a ram (22) and a piston (112) separated by a column of hydraulic fluid in a housing (120). Upward movement of the ram in the housing first seals a finite quantity of hydraulic fluid in the housing cavity. Continued upward ram movement then causes the piston, and hydraulic fluid beneath it, to move upwardly into a sealed gas chamber to compress a gas and create a source of potential energy. Release of the force moving the ram upwardly permits the compressed gas above the piston to expel the hydraulic fluid from the chamber against the ram thereby converting the potential energy in the compressed gas into kinetic energy in the ram. The hydraulic fluid bears directly against the ram to provide the working stroke of the impact device without the effect of metal fatigue from direct contact between the piston and ram.
-
公开(公告)号：EP0080964A2
公开(公告)日：1983-06-08
申请号：EP82630092.3
申请日：1982-09-21
申请人： Justus, Edgar J.
发明人： Justus, Edgar J.
CPC分类号： B25D17/24 , B25D9/12 , B25D9/20 , B25D2209/005
摘要： A linear actuator includes a ram (22) and a piston (112) separated by a column of hydraulic fluid in a housing (120). Upward movement of the ram in the housing first seals a finite quantity of hydraulic fluid in the housing cavity. Continued upward ram movement then causes the piston, and hydraulic fluid beneath it, to move upwardly into a sealed gas chamber to compress a gas and create a source of potential energy. Release of the force moving the ram upwardly permits the compressed gas above the piston to expel the hydraulic fluid from the chamber against the ram thereby converting the potential energy in the compressed gas into kinetic energy in the ram. The hydraulic fluid bears directly against the ram to provide the working stroke of the impact device without the effect of metal fatigue from direct contact between the piston and ram.
-
公开(公告)号：EP0080964B1
公开(公告)日：1988-11-02
申请号：EP82630092.3
申请日：1982-09-21
申请人： Justus, Edgar J.
发明人： Justus, Edgar J.
CPC分类号： B25D17/24 , B25D9/12 , B25D9/20 , B25D2209/005
-
-
搜索结果
3 条记录 (耗时 0.006 秒)
