Patents by Inventor Mark A. Purinton

Mark A. Purinton 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).

  • Return air flow control for variable air volume system
    Patent number: 4407185
    Abstract: A variable air volume (VAV) system in which the inflow of outside air is maintained above a predetermined value by maintaining a substantially fixed negative pressure in the plenum by the use of a static pressure sensor and control system for controlling the speed of the return fan.
    Type: Grant
    Filed: February 23, 1982
    Date of Patent: October 4, 1983
    Assignee: Borg-Warner Corporation
    Inventors: Roger W. Haines, Mark A. Purinton