Patents by Inventor Mads P. Frium

Mads P. Frium 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).

  • Electric drive arrangement for a cord winding and dewinding winch
    Patent number: 5300867
    Abstract: In an electric drive arrangement for a cord winding and dewinding winch (22), in particular for cord-operated screening and opening/closing devices for windows and doors, in which the operating cord (4) is connected with said device for moving it in one direction when winding up the cord on said winch (22), the latter being turned in one direction by means of an electric motor (12), while movement in the other direction is effected by a spring force acting on the device while dewinding the cord from the winch (22), the latter being turned by the electric motor (12) in the opposite direction, the winding and dewinding winch (22) for the cord is combined into a drive unit with the electric motor (12) and connected thereto by a transmission device, which is influenced by a braking force, means being provided for stopping the electric motor in response to suspension of the tension in the cord (4) caused by the movement in said other direction effected by the spring force, when dewinding the cord, said stopping me
    Type: Grant
    Filed: June 19, 1992
    Date of Patent: April 5, 1994
    Assignee: V. Kann Rasmussen Industri A/S
    Inventors: Claus B. Brade, Jesper Darum, Mads P. Frium