Patents Assigned to Crown Products Company, Inc.
  • Ring seal collar for air ducts
    Patent number: 4930815
    Abstract: Ring collar for use in connecting a side branch line to a main header air duct, the ring collar having a tubular sheet metal body with an inlet, an outlet end which is tapered for easy insertion into a tubular member, and a U-shaped channel ring around the body with the open side of the channel facing the outlet end of the body; and a process for connecting the ring collar to the main header.
    Type: Grant
    Filed: February 2, 1989
    Date of Patent: June 5, 1990
    Assignee: Crown Products Company, Inc.
    Inventor: William P. Tuggler, Jr.