Patents Assigned to Reinhard Thom
  • Method for making a glass precision valve
    Patent number: 4671915
    Abstract: A glass precision valve for use in liquid measuring instruments, the valve comprising a valve body having a conically sharpened head slidably accommodated in a bulged portion, which includes glass tubes at opposite ends, a valve seat provided by the inside wall of the bulged portion, the surface of the valve seat allowing the conically sharpened head of the valve body to be slidable in a liquid-tight manner, and the valve body including a ring-shaped groove around its axis, the ring-shaped groove being filled with an elastic material.
    Type: Grant
    Filed: September 30, 1985
    Date of Patent: June 9, 1987
    Assignees: TOA Medical Electronics Company Limited, Reinhard Thom
    Inventors: Keiji Fujimoto, Reinhard Thom