Patents by Inventor Per Arne Sigurdsson

Per Arne Sigurdsson 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: 6132365
    Abstract: The present invention relates to a valve (1) intended for positioning in the urethra (2) or similar of a patient in the upper part (2A) of the urethra, which exhibits means for emptying the patient's urine bladder (5) or similar through the valve (1). The valve (1) is so arranged as to be positioned in the urethra (2), etc., and to be withdrawn from it with the help of a tool capable of being accomodated in the urethra, etc., and activated from the outside (10) of the patient's body, and the valve (1) is adjustable from the outside (10) of the patient's body for the purpose of achieving emptying of the urine bladder (5), etc. The primary technical objectives are that the construction must be leakproof, simple to open and close by the patient, tolerated by the body, and free from side-effects. The valve must be adapted to suit the sex, age and body weight of the patient and the size of the urethra.
    Type: Grant
    Filed: June 27, 1996
    Date of Patent: October 17, 2000
    Inventor: Per Arne Sigurdsson
  • Patent number: 5061088
    Abstract: A device for mounting a machine element, such as a shaft (9). According to a first aspect of the invention, a bearing housing (5) is mounted on a machine body (1) by means of a plate-shaped supporting means (22) having a main plane perpendicular to the shaft (9). The supporting means (22) is rigidly connected with both the machine body (1) at first points of attachment (23), and with the bearing housing (5) at second points of attachment (24) which, in the main plane, are separate from the first points of attachment (23). The supporting means (22) has a rigidity in its main plane and a corresponding flexibility across its main plane, so as to be capable of transmitting substantially radial load and so as to permit, by deflection between the first and the second points of attachment (23, 24), a movement of the bearing housing (5) in relation to the machine body (1).
    Type: Grant
    Filed: November 28, 1990
    Date of Patent: October 29, 1991
    Assignee: Hoganas AB
    Inventor: Per-Arne Sigurdsson
  • Patent number: 4113846
    Abstract: A method of increasing to a predetermined value the pressure exerted on materials treated in high pressure chambers. A first pressure-exerting force is used to act on the material throughout the entire treatment process and a second pressure-exerting force is used to act on a limited amount of a pressure compensating medium. The two pressure-exerting forces are interdependent whereby any tendency to change of the pressure exerted on the material inside the pressure chamber automatically brings about a proportional change of the pressure of the compensating medium, whereby the pressure in the high-pressure chamber is maintained at the desired level. The method is primarily but not exclusively intended for the production of synthetic diamonds.
    Type: Grant
    Filed: March 17, 1977
    Date of Patent: September 12, 1978
    Assignee: Sigurdssons Mek. Verkstad
    Inventor: Per Arne Sigurdsson