Patents by Inventor Jan de Rover

Jan de Rover 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).

  • Panel for closing an opening, and clip system for use as a part thereof
    Patent number: 5333920
    Abstract: A clip system for clamping a panel element against a rebate comprises a bolt which is movable between a first position for clamping the panel element against a rebate and a second position for releasing the panel element, and an operating mechanism for moving the bolt. According to the invention, depending on the position of the bolt, there is a variable transmission ratio between the operating mechanism and the bolt, with a reduction which increases as the bolt in a path near the first position nears said first position. Operation of the bolt consequently requires little force and can be carried out with a short movement. The clip system can be achieved by a simple construction requiring little maintenance.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: August 2, 1994
    Assignee: Machinefabriek en Handelmaatschappij Winel B.V.
    Inventor: Jan de Rover