Patents Assigned to Architectural Art Mfg., Inc.
  • Internally expanding railing coupling
    Patent number: 4344719
    Abstract: An internal expanding coupling for pipe railing including a slotted sleeve member positioned inside two abutted railing sections with a wedging member positioned within the slot for expanding the sleeve outwardly against the railing sections in a locking joint as the wedge member is drawn against the railing sections.
    Type: Grant
    Filed: July 24, 1980
    Date of Patent: August 17, 1982
    Assignee: Architectural Art Mfg., Inc.
    Inventor: Wenzel W. Thom