Patents Assigned to Hayden, Inc.
  • Heat exchanger with internal bypass valve
    Patent number: 4991643
    Abstract: A heat exchanger with an internal bypass valve wherein the open end of a bypass tube mounted within a heat exchanger tube forms a valve seat for the bypass valve. A valve head mounted on a valve rod is spring loaded against the valve seat in the preferred design. The length of the contact arms on the valve body controls the valve activation pressure. The heat exchanger tubes may be mounted in parallel and the bypass valves may be mounted in the same direction or in opposite directions to permit bidirectional bypass flow.
    Type: Grant
    Filed: August 23, 1989
    Date of Patent: February 12, 1991
    Assignee: Hayden, Inc.
    Inventors: Stephen G. Price, James E. Ott
  • Fan blade
    Patent number: D275884
    Type: Grant
    Filed: January 29, 1982
    Date of Patent: October 9, 1984
    Assignee: Hayden, Inc.
    Inventor: James R. C. Bushong