Patents Assigned to Fukuhara Cast Iron Inc.
  • Manhole cover receiving frame
    Patent number: 5974741
    Abstract: A manhole cover receiving frame includes an outer tube and a cover receiving frame. The cover receiving frame may be axially moved relative to the outer tube so that an upper surface of the manhole cover receiving frame matches the level of the surrounding road surface. The cover receiving frame is moved by a plurality of bolts threaded in the outer tube.
    Type: Grant
    Filed: September 22, 1997
    Date of Patent: November 2, 1999
    Assignee: Fukuhara Cast Iron Inc.
    Inventor: Masaru Fukuhara