Patents by Inventor Charles Heidmann

Charles Heidmann 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: 5253595
    Abstract: A modular system for office furniture comprising a sufficient number of three types of modules, each corresponding to one or more of the following functions: a "working surface" function, a "support" function, a "storage" function, and an "electrical wire guiding function." The first module, a "table top module," provides a working surface which performs the "working surface" function. It comprises three sections, two end sections and a middle connecting section, and is supported by the second and third modules. The end sections of the first table top module each rest on a second "support" module which performs both the "support" and "storage functions." The third module is a column having upper and lower portions and performs both the "electrical wire guiding" and support functions." The upper portion contains the electrical wires of all hardware and appliances distributed on the table top module and the lower supports the middle section of the first table top module.
    Type: Grant
    Filed: March 5, 1993
    Date of Patent: October 19, 1993
    Assignee: Steelcase Strafor (S.A.)
    Inventor: Charles Heidmann
  • Patent number: 4981326
    Abstract: An ergonomic chair having a movable, bendable chair back, which offers improved comfort and adjustability. The structure includes a series of rearward opening grooves in the chair back. This structure allows limited back flexibility. The chair also includes a mehcanism for adjusting the force needed to move the back, and another mechanism which limits the back's movement. Similar structure includes a seat which can slide forward and backward.
    Type: Grant
    Filed: September 19, 1988
    Date of Patent: January 1, 1991
    Assignee: Steelcase Strafor
    Inventor: Charles Heidmann
  • Patent number: 4913493
    Abstract: Semi-rigid structure which ability to the unidirectional deformation can be controlled, and particularly utilizable in the making of "ergonomic" seats, characterized in that it consists in a succession of parallel blocks 5 of rigid material joined together by narrow webs (7) of thinner and/or more flexible material, the deformation of the structure resulting from the pressing of all the webs, such a pressing being limited by ribs 8 placed inside the foresaid webs.
    Type: Grant
    Filed: September 13, 1988
    Date of Patent: April 3, 1990
    Assignee: Strafor S.A.
    Inventor: Charles Heidmann
  • Patent number: 4406101
    Abstract: A movable room divider or partition is provided with a raceway for communication cables, and other casual wiring. The raceway comprises a U-shaped channel connected with the partition and extending along and beneath the base of the partition. The channel has a rigid web for supporting the cables, and a pair of upstanding flanges with free edges disposed adjacent the partition base to enclose the raceway. At least one of the flanges is resiliently flexible to permit localized, elastic deformation of the flange for inserting and withdrawing the cables from the raceway.
    Type: Grant
    Filed: September 16, 1980
    Date of Patent: September 27, 1983
    Assignee: Steelcase Inc.
    Inventor: Charles Heidmann
  • Patent number: D312176
    Type: Grant
    Filed: June 1, 1987
    Date of Patent: November 20, 1990
    Assignee: Steelcase Strafor
    Inventor: Charles Heidmann
  • Patent number: D315960
    Type: Grant
    Filed: February 22, 1989
    Date of Patent: April 2, 1991
    Assignee: Steelcase Strafor
    Inventor: Charles Heidmann
  • Patent number: D316151
    Type: Grant
    Filed: February 22, 1989
    Date of Patent: April 9, 1991
    Assignee: Steelcase Strafor
    Inventor: Charles Heidmann
  • Patent number: D319935
    Type: Grant
    Filed: November 10, 1988
    Date of Patent: September 17, 1991
    Assignee: Steelcase Strafor
    Inventor: Charles Heidmann
  • Patent number: D321407
    Type: Grant
    Filed: February 22, 1989
    Date of Patent: November 5, 1991
    Assignee: Steelcase Strafor
    Inventor: Charles Heidmann
  • Patent number: D330302
    Type: Grant
    Filed: November 10, 1988
    Date of Patent: October 20, 1992
    Assignee: Steelcase Strafor
    Inventor: Charles Heidmann
  • Patent number: D333352
    Type: Grant
    Filed: November 10, 1988
    Date of Patent: February 16, 1993
    Assignee: Steelcase Strafor
    Inventor: Charles Heidmann
  • Patent number: D335398
    Type: Grant
    Filed: October 16, 1990
    Date of Patent: May 11, 1993
    Assignee: Steelcase Strafor
    Inventor: Charles Heidmann
  • Patent number: D337448
    Type: Grant
    Filed: January 16, 1991
    Date of Patent: July 20, 1993
    Assignee: Steelcase Strafor
    Inventor: Charles Heidmann
  • Patent number: D342166
    Type: Grant
    Filed: October 16, 1990
    Date of Patent: December 14, 1993
    Assignee: Steelcase Strafor
    Inventor: Charles Heidmann