Patents by Inventor Kauko Helevirta

Kauko Helevirta 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: 5819436
    Abstract: The invention provides a method and an apparatus for vacuum drying of a material, particularly timber or the like. The apparatus comprises a drying chamber (1), a vacuum producing unit (6) coupled with the drying chamber, a cooler structure (2,4), and devices for heating the drying chamber (1). The cooler structure (2,4) and the drying chamber (1) are coupled together by a compression unit (9) that may be placed substantially within the drying chamber (1). The cooler structure (2,4) is placed at least partially in a heat transfer connection with the drying chamber (1).
    Type: Grant
    Filed: February 26, 1997
    Date of Patent: October 13, 1998
    Assignee: High Speed Tech Oy Ltd.
    Inventor: Kauko Helevirta
  • Patent number: 5222770
    Abstract: The invention relates to a connector for a hydraulic pressure hose, said connector comprising a body (7) which includes a first sleeve member (8), to be fitted inside the end of a hydraulic pressure hose, as well as a connecting member (11). The connecting member (11) preferably includes a gripping means (12) for a tool and a fastening means (13), such as a threaded portion for coupling the connector with a hydraulic system. In addition, the connecting member (11) includes a second sleeve member (9) mounted outside the end of a house in line with said first sleeve member (8), said sleeve members (8,9) being adapted, upon mounting the connector on a hydraulic pressure hose, to squeeze towards each other and to clamp the end of hydraulic pressure hose therebetween. At least a part of at least one of the sleeve members (8,9) is electrically insulated from body (7).
    Type: Grant
    Filed: February 27, 1991
    Date of Patent: June 29, 1993
    Assignee: Rauma-Repola Oy
    Inventor: Kauko Helevirta