Patents by Inventor Birch F. Parker

Birch F. Parker has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Flexible joint for connecting two pipes
    Patent number: 4856822
    Abstract: A hollow flexible joint (10) for connecting two pipes (6, 8) in an engine exhaust system, which includes two or more tubular coupling members (12, 14) adapted for connection between the pipes (6, 8), the tubular members (12, 14) each being sealingly and pivotally engaged with another tubular member (12, 14), and two of the tubular members (12, 14) being engageable with a respective adjacent end of each of the pipes (6, 8). The joint includes three or more pairs of part-spherical mated sealing surfaces (11a, 11b, 11c), and can remain gas-tight even when one of the pipes (6, 8) articulates universally relative to the other.
    Type: Grant
    Filed: July 14, 1987
    Date of Patent: August 15, 1989
    Inventor: Birch F. Parker