Patents by Inventor Jan Ostergaard

Jan Ostergaard 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).

  • Valve and a method of closing a valve
    Patent number: 6648006
    Abstract: Valve (1) with a through-going axial bore (4), a first spindle (5) axially displaceable in the bore (4), an elastic/flexible seal (10) placed at the one end surface (6) of the first spindle (5), at least two hollow connection branches (7, 8), each of which connects the valve to an outer coupling, said first spindle (5) in a first position forming a first annular sealing surface (9) between the outer surface of the seal (10) and the inner bottom (11) of the valve body which contains the outlet opening (29), and where the first spindle (5) lies coaxially inside a second axially displaceable and hollow spindle (12) lying in the bore (4), the end surface of which or parts thereof (13) form a second annular sealing surface (14) between the outer surface of the seal (10) and the inner bottom (11) of the valve body at a second position radially from the first annular sealing surface (9).
    Type: Grant
    Filed: October 1, 2001
    Date of Patent: November 18, 2003
    Assignee: Ostergaard Maskinfabrik A/S
    Inventor: Jan Ostergaard