Patents Assigned to Motoyama Eng. Works, Lts
  • Metal diaphragm valve
    Patent number: 4828219
    Abstract: A metal diaphragm valve in which the interior of a valve casing is divided, by means of a metal diaphragm, thereby defining a valve chamber. Inlet hole and outlet hole are connected to the valve chamber. A valve seat is provided between the inlet and outlet holes, inside the valve chamber. A valve disk adapted to rest on the valve seat, is formed integrally with the diaphragm. The valve disk is driven by a drive unit disposed outside of the valve chamber, to open or close the valve.
    Type: Grant
    Filed: October 27, 1987
    Date of Patent: May 9, 1989
    Assignee: Motoyama Eng. Works, Lts
    Inventors: Tadahiro Ohmi, Yohichi Kanno, Osamu Uchisawa, Kazuhiko Sato