Patents by Inventor Klas Karlsson

Klas Karlsson 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).

  • Publication number: 20090235769
    Abstract: A device in connection with transmission, preferably in relation with low-speed lifts, the device including an externally threaded rod (1), a nut (3) that is mounted on the rod (1), and elements to rotate the nut (3). The nut that is included in a device in connection with transmission is also disclosed. It is significant of the device that the nut (3) is equipped with a bevel (9) in the area of one thread entry.
    Type: Application
    Filed: June 13, 2006
    Publication date: September 24, 2009
    Applicant: Aritco Lift AB
    Inventor: Klas Karlsson
  • Patent number: 6276110
    Abstract: The present invention relates to a stud (1) intended for a timber wall and a method for manufacturing the stud (1). The stud (1) constitutes a part of a wooden frame on which, for example, plaster board panels (12) are secured in order to form the wall. The stud (1) is provided with at least two longitudinal grooves (6, 7) made alternatingly from opposing sides (2, 3) of the stud (1). Each individual groove (6, 7) is wholly open towards that side (2, 3) it was made from. Each groove (6, 7) moreover displays openings (10, 11) in the opposite side (2, 3) and portions (8, 9) with residual material between the openings (10, 11). Each longitudinal groove (6, 7) is thus alternatingly through-going and alternatingly not through-going.
    Type: Grant
    Filed: June 6, 2000
    Date of Patent: August 21, 2001
    Assignee: Sodra Timber AB
    Inventor: Klas Karlsson
  • Patent number: 4919236
    Abstract: A screw lift comprises a lift car (2) which is movably supported on an upright fixed screw (4) and carries a nut (54) in engagement with the screw and a belt drive for rotating the nut on the screw and thereby driving of the lift car along the screw. The nut (54) is rotatably journalled in a lubrication and bearing housing (62), which is connected with the lift car (2) and out of which it extends with a portion, that widens essentially conically and carries a belt pulley (56) with a correspondingly conically shaped hole. The belt pulley and the nut are mutually somewhat axially shiftable. A pulse transmitter (130,132) is arranged as the only position, direction and velocity determining device for the lift for sensing the position of the nut on the screw and emitting signals corresponding thereto.
    Type: Grant
    Filed: June 12, 1987
    Date of Patent: April 24, 1990
    Assignee: NTD Hiss Nartransportdon AB
    Inventors: Klas Karlsson, Rune Bergvall