Patents by Inventor Bernhard Schroeder

Bernhard Schroeder 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).

  • Chair, particularly a data display chair
    Patent number: 4411469
    Abstract: A chair having a base, a seat, a backrest and a spring between the seat and the backrest. A first pair of links is pivotably connected to the seat and the backrest respectively and a second pair of links is pivotably connected to the seat and the base respectively, one pair forming an angle lever connected to the seat. One end of the spring is adjustably supported either by a nut and spindle and a bar between the angle lever and the spring or by a slide in the form of a nut on a threaded spindle and a guide slidably receiving the slide and arranged in the angle lever.
    Type: Grant
    Filed: July 17, 1980
    Date of Patent: October 25, 1983
    Assignee: Drabert Sohne
    Inventors: Fritz Drabert, Oskar Posch, Hans-Joachim Edel, Bernhard Schroeder