Patents by Inventor Ole S. Ravn

Ole S. Ravn 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: 4809382
    Abstract: A hand spray has rotating brushes and consists of a housing with an inlet for the supply of water. In the housing an annular distribution chamber is delimited by means of a cup-shaped inner housing member, within which a turbine wheel is mounted. The turbine wheel is impinged by water flowing from the chamber through nozzles provided in the cup-shaped housing member. The turbine wheel drives the brushes via a gear transmission. In order to obtain a washing effect by means of regular jets simultaneously with the brushing effect of the rotating brushes, a circular array of holes is provided in the part of the housing facing away from the bottom of the cup-shaped housing member, the inner ends of said holes opening into the housing substantially flush with the inner side of the wall of the cup-shaped housing member, the outer ends of the holes opening directly into the open. The brushes of the hand spray are aranged within said circular array of holes.
    Type: Grant
    Filed: September 14, 1988
    Date of Patent: March 7, 1989
    Assignee: Stig Ravn A/S
    Inventor: Ole S. Ravn
  • Patent number: D251644
    Type: Grant
    Filed: March 6, 1978
    Date of Patent: April 24, 1979
    Assignee: Stig Ravn A/S
    Inventor: Ole S. Ravn
  • Patent number: D255687
    Type: Grant
    Filed: June 1, 1978
    Date of Patent: July 1, 1980
    Assignee: Stig Ravn A/S
    Inventor: Ole S. Ravn