Patents by Inventor Nils Preben Hammeken

Nils Preben Hammeken 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: 6125502
    Abstract: A suction pipe for a suction cleaner comprising an elongated pipe having at its lower end, in the in-use position, a coupling stud for a suction mouthpiece, and opposite this end, a flexible suction hose facing to one side relative to the elongated pipe, and wherein the suction pipe further has an upper operating handle arranged above the flexible suction hose in the in-use position. The upper operating handle in the in-use position of the suction pipe is arranged at a distance above the flexible suction hose that exceeds the length of the forearm of the operator, and the upper operating handle is so arranged that it allows it to be seized from that side of the suction pipe on which the flexible suction hose is arranged.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: October 3, 2000
    Assignee: Nilfisk A/S
    Inventors: Nils Preben Hammeken, Benny Matthiassen
  • Patent number: 6065183
    Abstract: A connecting element for coupling of the suction pipe (3) of a suction cleaner to a mouthpiece (2) having a suction sole (9) with an abutment surface (10) and an elongated suction slot which debouches on the abutment surface (10) of the suction sole (9), and wherein the connecting element comprises flexible joints (4, 5, 7, 8) which may transmit an angle change of the suction pipe (3) of the vacuum cleaner about the longitudinal axis of the suction pipe to a rotation of the vacuum cleaner mouthpiece in the plane of the abutment surface (10), and also allows a freedom of movement between the vacuum cleaner mouthpiece (2) and the vacuum cleaner suction pipe (3) whereby the abutment surface may freely assume different orientations relative to the longitudinal axis of the suction pipe. According to the invention the flexible joint has a freedom of movement which allows the suction pipe to be freely movable about an axis (8a) which is parallel with the suction slot in an angle (.alpha.
    Type: Grant
    Filed: August 13, 1998
    Date of Patent: May 23, 2000
    Assignee: Nilfisk A/S
    Inventors: Nils Preben Hammeken, Benny Matthiassen