Patents by Inventor Richard W. Kritzer

Richard W. Kritzer 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).

  • Method of making heat exchangers
    Patent number: 4360958
    Abstract: Method of making multi-port heat exchangers wherein tubular members made of metal that does not well lend itself to being extruded into a plurality of passageways may be divided into multiple passageways by dividers inserted thereinto and adhered thereto.
    Type: Grant
    Filed: January 12, 1981
    Date of Patent: November 30, 1982
    Inventor: Richard W. Kritzer
  • Method of making heat exchangers
    Patent number: 4349949
    Abstract: The method of making elongated heat exchangers having outwardly projecting fins spaced longitudinally thereof, wherein the fins are cut or gouged from a work-piece while the work-piece and cutting tool are vibrated relative to each other to afford roughened surfaces on both faces of the fins facing longitudinally of the heat exchanger.
    Type: Grant
    Filed: November 5, 1980
    Date of Patent: September 21, 1982
    Inventor: Richard W. Kritzer
  • Heat exchangers and method of making same
    Patent number: 4337826
    Abstract: A heat exchanger and method of making same, wherein elongated passageways are formed in unbonded portions of a blank made of bonded sheet material, and integral fins are formed on the sheet material with the fins having elongated base portions extending transversely to the length of said passageways. In certain embodiments the finned portions of the heat exchanger are so disposed relative to each other that fins therein project toward the adjacent finned portions.
    Type: Grant
    Filed: February 26, 1979
    Date of Patent: July 6, 1982
    Assignee: Peerless of America, Inc.
    Inventor: Richard W. Kritzer
  • Making heat exchangers
    Patent number: 4332069
    Abstract: The method of making elongated heat exchangers having outwardly projecting fins spaced longitudinally thereof, wherein the fins are cut or gouged from a surface of a work-piece, and which method includes making indentations in the surface prior to cutting or gouging the fins therefrom, to thereby afford roughened surfaces of the fins so formed, and which method may also include scratching or cutting a surface of a previously formed fin.
    Type: Grant
    Filed: November 10, 1980
    Date of Patent: June 1, 1982
    Inventor: Richard W. Kritzer
  • Method of making heat exchangers
    Patent number: 4330913
    Abstract: The method of making elongated heat exchangers having outwardly projecting fins disposed at various angles to the length and width of the heat exchangers wherein elongated tubular members are fed longitudinally past cutters which are reciprocated into and out of the tubular members in skiving actions and the angles of the cutters relative to the length and width of the tubular members moving therepast are changed between at least some of the reciprocations of the cutters.
    Type: Grant
    Filed: October 20, 1980
    Date of Patent: May 25, 1982
    Inventor: Richard W. Kritzer
  • Respirators
    Patent number: 4226233
    Abstract: A respirator through which a person may breath air or a mixture of air and oxygen, and which vibrates the material passing through the respirator during inhalation and exhalation in such a manner as to vibrate the cilia in the lungs of the person breathing through the respirator. The respirator also embodying a manually operable member for selectively applying positive pressure to the lungs of the person using the same.
    Type: Grant
    Filed: October 10, 1978
    Date of Patent: October 7, 1980
    Assignee: Longevity Products, Inc.
    Inventor: Richard W. Kritzer
  • Respirators
    Patent number: 4062358
    Abstract: A respirator through which a person may breath air or a mixture of air and oxygen, and which vibrates the material passing through the respirator during inhalation and exhalation in such a manner as to vibrate the cilia in the lungs of the person breathing through the respirator.
    Type: Grant
    Filed: April 21, 1976
    Date of Patent: December 13, 1977
    Inventor: Richard W. Kritzer
  • Respirators
    Patent number: 4054134
    Abstract: A respirator through which a person may breath, and which vibrates the air during inhalation and exhalation in such a manner as to vibrate the cilia in the lungs of the person breathing through the respirator.
    Type: Grant
    Filed: September 15, 1975
    Date of Patent: October 18, 1977
    Inventor: Richard W. Kritzer