ELECTROMAGNETIC DEVICE OF RECIPROCATING MOTION Russian patent published in 1995 - IPC

FIELD: pump manufacture. SUBSTANCE: electromagnetic device of reciprocating motion has case housing stationary magnetic circuits 14 and 15 with two uniaxial coils 18 and 19 between which mobile armature 22 moves on rod 13. Ends of rod 13 are made fast in membranes 7 and 8 mounted in case forming spaces of working chambers in case. Rest 9 and 10 anchored on rod 13 and installed between membranes 7 and 8 and magnetic circuits 14 and 15. Semi-cases 20 and 21 of magneto conductive material are intercoupled through fluid-tight spacer 23. Walls of each working chamber are made in the form of valve units 5 and 6 on side opposite to membranes 7 and 8 having inlet and outlet fast-acting valves 26-29 in the form of closing ring cups 1-4. Restoring members 11 in the form of truncated cone are placed into casings 24 and 25. EFFECT: enhanced operational efficiency. 3 dwg