Patents by Inventor Kurt Pettersson

Kurt Pettersson 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: 4974386
    Abstract: A sheet metal profile member (22) for the construction of a frame structure for a box-shaped casing for ventilation or air treatment devices. The sheet metal profile member has a substantially square cross-section with an internal cavity (23) and a guide flange (44), which is retracted in the region of an external corner edge (22a), so as to enable interconnection of adjoining frame structures both vertically and horizontally by means of a guide engagement rod (20).
    Type: Grant
    Filed: July 21, 1988
    Date of Patent: December 4, 1990
    Assignee: AB Bahco Ventilation
    Inventors: Arne Eriksson, Weine Hammarberg, Kurt Pettersson
  • Patent number: 4782637
    Abstract: A frame structure for the construction of a box-shaped casing, in particular for air treatment devices. The frame structure comprises straight profile members (22), on the one hand, and corner elements (50,52) with three mutually perpendicular protrusions, each being connectable to one of said profile elements, on the other hand. Each corner element consists of two parts, namely an external part (50) including the external portions (50a, 50b,50c) of said protrusions and an internal part (52) including the internal portions (52a,52b,52c) of the protrusions. Said protrusion portions together form a closed cross-section fitting internally into the likewise closed cross-section of the profile members (b 22). The profile members can be slid onto the corner element protrusions while simultaneously securing the external and internal corner element parts (50,52).
    Type: Grant
    Filed: March 31, 1987
    Date of Patent: November 8, 1988
    Assignee: AB Bahco Ventilation
    Inventors: Arne Eriksson, Weine Hammarberg, Kurt Pettersson
  • Patent number: 4021166
    Abstract: To allow a large built-in volume ratio of a vane type compressor, the outer circumferential surface of the rotor is provided in each working chamber with an indentation located next to the leading one of the two vanes partly defining the chamber, thereby increasing the through-flow area of the outlet space of the chamber through which it communicates with the stator's outlet port during the exhaust of compressed gas from the chamber.
    Type: Grant
    Filed: December 1, 1975
    Date of Patent: May 3, 1977
    Assignee: Stal-Refrigeration AB
    Inventors: Rune Glanvall, Hans Kalen, Kurt Pettersson
  • Patent number: D277597
    Type: Grant
    Filed: March 18, 1982
    Date of Patent: February 12, 1985
    Assignee: Aktiebolaget Bofors
    Inventors: Torsten Wik, Christer Lagerstam, Kurt Pettersson, Kjell Mattsson