Patents by Inventor Joseph J. Petlak

Joseph J. Petlak 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).

  • Air heater
    Patent number: 4286943
    Abstract: Air heater having an outer manifold and an inner combustion chamber with a common longitudinal axis, and a burner in the rear end of the chamber, of which the manifold has an air inlet in its rear end and a constricted air outlet in its front end, and the combustion chamber has in its peripheral wall a plurality of ports through which to divert part of the air from the manifold into the chamber for its heat-up by the burner flame therein and discharge through the open end of the chamber.
    Type: Grant
    Filed: August 21, 1979
    Date of Patent: September 1, 1981
    Assignee: Joseph J. Petlak
    Inventors: Joseph J. Petlak, Joseph M. Salafia