Patents Assigned to Hydraulic-Ring GmbH
  • Electromagnet, specially for actuating valves
    Patent number: 6344783
    Abstract: An electromagnet for actuating valves includes a sheath-like magnet housing encompassing a pole core forming a one-sided closure of the housing. The housing is connected to the pole core by an annular groove in its periphery, by an O-ring accommodated in the groove as a sealing element and by an annular groove in the magnet housing. The magnet housing forms bearing surfaces joined in positive fit to the inner walls of the annular groove and a sealing surface located on the O-ring.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: February 5, 2002
    Assignees: Hydraulic-Ring GmbH, Hydac Electronic GmbH
    Inventors: Rolf J. Neuhaus, Kurt R. Stratil, Andreas Ehrenfels, Frank Kattler, Hans-Jurgen Pauly