Patents by Inventor John T. Bertva

John T. Bertva 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).

  • Patent number: 5487422
    Abstract: An air conditioning condenser is provided with a pair of oppositely disposed headers having an exterior wall between which a plurality of substantially flat parallel flow tubes are disposed for providing fluid communication between the headers. The flow tubes are flat and have opposite side edges which are located on opposite sides of the condenser. At least one mounting bracket is attached to the air conditioning condenser. The mounting bracket is formed from a pair of opposite bracket members. The bracket members each have a header engagement portion and an inwardly protruding tube engagement portion. The header engagement portion of each bracket member has an inner wall for contacting the exterior wall of one of the headers so that when the bracket members are joined together, the header is held between the inner walls of the header engagement portions. The tube engagement portion of each bracket member terminates in an inner face and has a plurality of slots.
    Type: Grant
    Filed: January 25, 1994
    Date of Patent: January 30, 1996
    Assignee: Wynns Climate Systems, Inc.
    Inventors: John T. Bertva, Scott L. Hutto, John M. McCrady
  • Patent number: 5481800
    Abstract: A parallel flow condenser is provided for use in an automotive air conditioner. The parallel flow condenser has tubular headers formed by taking a metal sheet, cutting slots therein for receiving parallel flow tubes, rolling the metal sheet to form the tubular header with opposing edges which are lap joined, and cutting slots into the header for receiving the baffles. The condenser is then assembled and placed within a brazing furnace to sealingly secure the condenser assembly together.
    Type: Grant
    Filed: November 24, 1993
    Date of Patent: January 9, 1996
    Assignee: Wynn's Climate Systems, Inc.
    Inventors: Scott L. Hutto, John M. McCrady, John T. Bertva
  • Patent number: 5450896
    Abstract: A parallel flow condenser having a plurality of substantially flat, parallel flow tubes are positioned between oppositely disposed headers. The flow tubes provide fluid communication between the headers for cooling fluid which flows through the condenser. Each of the headers is formed from an inner member having an inner wall and a pair of longitudinally extending, parallel sidewalls which protrude outward from the inner wall. The parallel sidewalls terminate in outer edges. An outer member is provided having an outer wall and a pair of longitudinally extending attachment flanges which project inward from the outer wall. The attachment flanges are positioned between the parallel sidewalls of the inner member with the attachment flanges overlapping and joining one of the parallel sidewalls so that the inner and outer members are effectively joined together to form a fluid passage.
    Type: Grant
    Filed: January 25, 1994
    Date of Patent: September 19, 1995
    Assignee: Wynn's Climate Systems, Inc.
    Inventors: John T. Bertva, John M. McCrady, Scott L. Hutto
  • Patent number: 5415003
    Abstract: A method for recovering original type oil from a system that has been charged with an original type refrigerant eliminates the need for removing and cleaning individual components. A separate oil separator is connected to the compressor suction of the air conditioning system. The air conditioning system is operated to collect oil in the oil separator. Then the oil separator is bypassed and the system is injected with a replacement oil. The system is again operated, with the replacement oil mixing with the original type oil. The oil separator is again reconnected into the system at the suction port of the compressor. The air conditioning system operates again, with the oil being collected a second time. The system is then ready for recovery of refrigerant by a recovery unit.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: May 16, 1995
    Inventors: John T. Bertva, Danny A. Wheeler