Patents by Inventor Duane F. Nagel

Duane F. Nagel 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: 8066240
    Abstract: A multi-configurable furniture assembly including height adjustable legs, a height adjustable pedestal support structure, a variable height foot support for cabinets and shelves and a panel wall assembly where each of the separate assemblies have finished and high quality appearances after a configuration is constructed.
    Type: Grant
    Filed: March 2, 2007
    Date of Patent: November 29, 2011
    Assignee: Steelcase Inc.
    Inventors: Duane F. Nagel, Joylene M. Battey
  • Patent number: 8037642
    Abstract: A multi-configurable furniture assembly including height adjustable legs, a height adjustable pedestal support structure, a variable height foot support for cabinets and shelves and a panel wall assembly where each of the separate assemblies have finished and high quality appearances after a configuration is constructed.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: October 18, 2011
    Assignee: Steelcase Inc.
    Inventors: Duane F. Nagel, Joylene M. Battey, Anthony A. Stachowiak
  • Patent number: 7866268
    Abstract: A multi-configurable furniture assembly including height adjustable legs, a height adjustable pedestal support structure, a variable height foot support for cabinets and shelves and a panel wall assembly where each of the separate assemblies have finished and high quality appearances after a configuration is constructed.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: January 11, 2011
    Assignee: Steelcase Inc.
    Inventors: Duane F. Nagel, Joylene M. Battey
  • Publication number: 20080010935
    Abstract: A multi-configurable furniture assembly including height adjustable legs, a height adjustable pedestal support structure, a variable height foot support for cabinets and shelves and a panel wall assembly where each of the separate assemblies have finished and high quality appearances after a configuration is constructed.
    Type: Application
    Filed: March 6, 2007
    Publication date: January 17, 2008
    Inventors: Duane F. Nagel, Joylene M. Battey, Anthony A. Stachowiak
  • Publication number: 20070215765
    Abstract: A multi-configurable furniture assembly including height adjustable legs, a height adjustable pedestal support structure, a variable height foot support for cabinets and shelves and a panel wall assembly where each of the separate assemblies have finished and high quality appearances after a configuration is constructed.
    Type: Application
    Filed: March 2, 2007
    Publication date: September 20, 2007
    Inventors: Duane F. Nagel, Joylene M. Battey
  • Publication number: 20070204771
    Abstract: A multi-configurable furniture assembly including height adjustable legs, a height adjustable pedestal support structure, a variable height foot support for cabinets and shelves and a panel wall assembly where each of the separate assemblies have finished and high quality appearances after a configuration is constructed.
    Type: Application
    Filed: March 6, 2007
    Publication date: September 6, 2007
    Inventors: Duane F. Nagel, Joylene M. Battey
  • Patent number: 6554364
    Abstract: An armrest structure includes a support and a body rotatably mounted on the support. The support includes a pair of protrusions and the body includes a notched channel for receiving the protrusions. By rotating the body on the support, the protrusions are repositioned in the notched channel between selected stable use positions. The notches are located on both sides of the channel such that the body can be located in a first position with the first surface on the body facing generally upwardly for use, and a second position with the second surface on the body facing generally upwardly for use. By varying the surfaces on the body, and also the engagement of the protrusion with the notched channel, various spacial positions and functional surfaces can be selectively positioned for use.
    Type: Grant
    Filed: February 17, 1995
    Date of Patent: April 29, 2003
    Assignee: Steelcase Development Corporation
    Inventors: Arnold B. Dammermann, David A. Bodnar, Michael L. Deimen, Thomas R. Hahn, Duane F. Nagel, Charles P. Roossien, David L. Rundhaug, David S. Teppo
  • Patent number: 6099076
    Abstract: A chair includes a base, a seat operably supported on the base for depth adjustment, and a back operably supported by an upright that extends from the base for recline. The back includes a structural back support, a rear cover covering a rear side of the back support, and a front/lower concave cover covering the upright between a rear of the seat and below the back support to provide a one-piece back and seat appearance. The concave cover defines a concavity shaped to receive a rear of the seat to facilitate depth adjustment, but so that the one-piece back and seat appearance is maintained. The concave cover further includes upwardly extending tabs that engage a lower marginal edge of the back support to facilitate assembly.
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: August 8, 2000
    Assignee: Steelcase Development Inc.
    Inventors: Duane F. Nagel, Daniel P. Beemer, Dale M. Groendal, Jeffrey A. Hall, Edward L. Tyler
  • Patent number: 6062649
    Abstract: A chair includes a base, a seat operably supported on the base for depth adjustment, and a back operably supported by an upright that extends from the base for recline. The back includes a structural back support, a rear cover covering a rear side of the back support, and a front/lower concave cover covering the upright between a rear of the seat and below the back support to provide a one-piece back and seat appearance. The concave cover defines a concavity shaped to receive a rear of the seat to facilitate depth adjustment, but so that the one-piece back and seat appearance is maintained. The concave cover further includes upwardly extending tabs that engage a lower marginal edge of the back support to facilitate assembly.
    Type: Grant
    Filed: March 3, 1998
    Date of Patent: May 16, 2000
    Assignee: Steelcase Development Inc.
    Inventors: Duane F. Nagel, Daniel P. Beemer, Dale M. Groendal, Jeffrey A. Hall, Edward L. Tyler
  • Patent number: 5842264
    Abstract: A structural support shell for a tilt-back chair has a back portion, a seat portion, and a flexible compression zone extending between the back and seat portions in an integrally molded, one-piece unit. The chair has a base with a recline control pivoting recline control lever. The seat portion of the shell is fixed to the base and the back portion of the shell is fixed to the recline control lever. The flexible compression zone provides a simplified construction for an ergonomic chair design having an effective axis of rotation between the back portion and seat portion which is located above the seat portion, forward of the back portion, and generally adjacent to the hip joints of a seated user. The chair includes side arms that laterally and then rotatably engage side arm supporting connectors on the chair to facilitate assembly. The chair further includes a one-piece shell having tabs for mateably engaging flanges on the chair seat and back to also facilitate assembly.
    Type: Grant
    Filed: August 27, 1997
    Date of Patent: December 1, 1998
    Assignee: Steelcase Inc.
    Inventors: Charles P. Roossien, David C. Pugh, Dale M. Groendal, James E. Massey, Robert M. Scheper, Duane F. Nagel, Bruce M. Smith, Douglas A. Smith, Brian L. Scholten
  • Patent number: 5662381
    Abstract: A structural support shell for a tilt-back chair has a back portion, a seat portion, and a flexible compression zone extending between the back and seat portions in an integrally molded, one-piece unit. The chair has a base with a recline control pivoting recline control lever. The seat portion of the shell is fixed to the base and the back portion of the shell is fixed to the recline control lever. The flexible compression zone provides a simplified construction for an ergonomic chair design having an effective axis of rotation between the back portion and seat portion which is located above the seat portion, forward of the back portion, and generally adjacent to the hip joints of a seated user. The chair includes side arms that laterally and then rotatably engage side arm supporting connectors on the chair to facilitate assembly. The chair further includes a one-piece shell having tabs for mateably engaging flanges on the chair seat and back to also facilitate assembly.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: September 2, 1997
    Assignee: Steelcase Inc.
    Inventors: Charles P. Roossien, David C. Pugh, Dale M. Groendal, James E. Massey, Robert M. Scheper, Duane F. Nagel, Bruce M. Smith, Douglas A. Smith, Brian L. Scholten
  • Patent number: 5318346
    Abstract: A structural support shell for a tilt-back chair has a back portion, a seat portion, and a flexible compression zone extending between the back and seat portions in an integrally molded, one-piece unit. The chair has a base with a recline control and pivoting recline control lever. The seat portion of the shell is fixed to the base and the back portion of the shell is fixed to the recline control lever. The flexible compression zone provides a simplified construction for an ergonomic chair design having an effective axis of rotation between the back portion and seat portion which is located above the seat portion, forward of the back portion, and generally adjacent to the hip joints of a seated user.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: June 7, 1994
    Assignee: Steelcase Inc.
    Inventors: Charles P. Roossien, David C. Pugh, Dale M. Groendal, James E. Massey, Robert M. Scheper, Daniel P. Beemer, James P. Steffens, Duane F. Nagel, Bruce M. Smith, Douglas A. Smith