Patents by Inventor Lawrence W. Ubowski

Lawrence W. Ubowski 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).

  • Embossed vortex generator enhanced plate fin
    Patent number: 4984626
    Abstract: An enhanced plate fin of a plate fin heat exchanger wherein vortex generator enhancements are embossed above and below the surface of the plate fin for the purpose of oversizing the boundary layer fluid between adjacent fins.
    Type: Grant
    Filed: November 24, 1989
    Date of Patent: January 15, 1991
    Assignee: Carrier Corporation
    Inventors: Jack L. Esformes, Lawrence W. Ubowski
  • Slit fin coil and the method of making coils
    Patent number: 4633941
    Abstract: A slit fin heat exchanger is formed by wrapping slit fin tubing into a flat coil having two spaced rows of tubing. The flat coil is located on mandrels which are rotatable about spaced parallel axes with the mandrels and axes initially being in the same plane. A piece of expanded metal is placed between the two rows. The mandrels are rotated about their axes in opposite directions which shifts the plane in which the coil is located. The shifting of the plane of the coil moves a portion of a first row of the coil into contact with a planar portion of a platen and the second row of the coil into a nesting relationship with the portion of the first row which is in contact with the planar portion of the platen and the piece of expanded metal. Continued rotation of the mandrels causes folding of the portions of the coil which extends the area of nesting. The folding takes place through up to 120.degree.
    Type: Grant
    Filed: February 3, 1986
    Date of Patent: January 6, 1987
    Assignee: Carrier Corporation
    Inventors: John R. McManus, Lawrence W. Ubowski
  • Method of making coils
    Patent number: 4619024
    Abstract: A slit fin heat exchanger is formed by wrapping slit fin tubing into a flat coil having two spaced rows of tubing. The flat coil is located on mandrels which are rotatable about spaced parallel axes with the mandrels and axes initially being in the same plane. A piece of expanded metal is placed between the two rows. The mandrels are rotated about their axes in opposite directions which shifts the plane in which the coil is located. The shifting of the plane of the coil moves a portion of a first row of the coil into contact with a planar portion of a platen and the second row of the coil into a nesting relationship with the portion of the first row which is in contact with the planar portion of the platen and the piece of expanded metal. Continued rotation of the mandrels causes folding of the portions of the coil which extends the area of nesting. The folding takes place through up to 120.degree.
    Type: Grant
    Filed: December 17, 1984
    Date of Patent: October 28, 1986
    Assignee: Carrier Corporation
    Inventors: John R. McManus, Lawrence W. Ubowski