Patents by Inventor Bruce W. DuVall

Bruce W. DuVall 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).

  • Publication number: 20090091228
    Abstract: A pedestal system includes a cabinet having a bottom wall, a top wall, a pair of sidewalls, and a rear wall that cooperate to define a forwardly-opening aperture that slidably receives a plurality of drawer assemblies therein. The pedestal system further includes interchangeable face plates for covering the drawer assemblies, an attachment system for attaching a drawer lock/interlock assembly that locks the drawer assemblies in a closed position and prevents multiple drawer assemblies from being simultaneously opened, and a drawer divider for segmenting an interior space of each drawer assembly. The drawer lock/interlock system includes a cam assembly that allows a constant force to be applied to each drawer assembly while opening each drawer and activating the lock/interlock assembly. The pedestal system further includes an attachment system for attaching the pedestal system to a free-standing partition system.
    Type: Application
    Filed: December 11, 2008
    Publication date: April 9, 2009
    Inventors: Paul L. Tupper, Peter J. Battey, John Hanna J. Hasbany, Marcus J. Cole, Theodore M. Haan, Bruce W. DuVall, JR., John L. McCrackin, Nancy A. Funk, David J. Battey, Angela Simon
  • Patent number: 7481503
    Abstract: A storage cabinet assembly includes a housing including a pair of sidewalls, a rear wall, and a top wall that cooperate with one another to form a storage area, and a base assembly supporting the housing. The base assembly includes a top wall and a bottom wall that mate together to form an interior space, and a plurality of corner support brackets supporting the top wall from the bottom wall. The storage cabinet assembly further includes a drop-in drawer arrangement, and a drawer interlock assembly adapted to prevent multiple drawers from being simultaneously moved to an opened position.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: January 27, 2009
    Assignee: Steelcase Inc.
    Inventors: Bradley D. Youngs, Daniel N. Phillips, Theodore M. Haan, David J. Battey, Michael G. Barney, Koryn L. Smith, Michael J. Feldpaush, Bruce W. DuVall, Jr.
  • Patent number: 7469979
    Abstract: A pedestal system includes a cabinet having a bottom wall, a top wall, a pair of sidewalls, and a rear wall that cooperate to define a forwardly-opening aperture that slidably receives a plurality of drawer assemblies therein. The pedestal system further includes interchangeable face plates for covering the drawer assemblies, an attachment system for attaching a drawer lock/interlock assembly that locks the drawer assemblies in a closed position and prevents multiple drawer assemblies from being simultaneously opened, and a drawer divider for segmenting an interior space of each drawer assembly. The drawer lock/interlock system includes a cam assembly that allows a constant force to be applied to each drawer assembly while opening each drawer and activating the lock/interlock assembly. The pedestal system further includes an attachment system for attaching the pedestal system to a free-standing partition system.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: December 30, 2008
    Assignee: Steelcase Inc.
    Inventors: Paul L. Tupper, Peter J. Battey, John Hanna J. Hasbany, Marcus J. Cole, Theodore M. Haan, Bruce W. DuVall, Jr., John L. McCrackin, Nancy A. Funk, David J. Battey, Angela Simon
  • Patent number: 6481163
    Abstract: A partition frame includes vertically spaced apart upper and lower horizontal frame members. The partition frame also has a pair of horizontally spaced apart vertical frame members extending between and interconnecting the upper and lower frame members to form a generally rectangular frame. The vertical frame members have a vertical row of openings configured to support hang-on accessories, and the upper frame member includes a horizontal row of openings configured to support hang-on accessories.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: November 19, 2002
    Assignee: Steelcase Development Corporation
    Inventors: Jonathan J. King, Alan E. Rheault, John S. Malnor, Daniel R. VanDyk, Michael L. Waalkes, Errol S. Pearsons, Bruce W. DuVall, Jr., William K. Hofman, Daniel N. Phillips
  • Patent number: 4175443
    Abstract: A three bellows transducer having two absolute bellows of equivalent configuration that isolate the motion detecting coils from the pressure media and respond only to change in line pressure to provide a zero shift and a large differential bellows that responds to a pressure differential to provide an electrical output which is a function of such pressure differential.
    Type: Grant
    Filed: May 25, 1978
    Date of Patent: November 27, 1979
    Assignee: Kaman Sciences Corporation
    Inventors: John C. Schneider, S. Eugene Hanson, Bruce W. DuVall
  • Patent number: 4164146
    Abstract: An inductive level sensor has inductively coupled primary and secondary windings. Circuitry drives the primary with an AC signal of constant current magnitude and selected frequency f to induce in the secondary, a voltage signal V of magnitude .vertline.V.vertline., frequency f and phase difference .phi. from the driving signal. Circuitry operates to generate a voltage output signal proportional to .vertline.V.vertline. cos (.phi.-.theta.), where .theta. is a selectively set phase shift factor. By properly and selectively adjusting the frequency f and phase shift factor .theta., an output signal .vertline.V.vertline. cos (.phi.-.theta.) can be provided which self-compensates for changes in mutual inductance caused by operating temperature variations so that an output signal is produced which is substantially linearly proportional to changes in the level of a pool of liquid metal being monitored. Disclosed also is calibration circuitry and circuitry for converting the voltage signal .vertline.V.vertline.
    Type: Grant
    Filed: November 2, 1976
    Date of Patent: August 14, 1979
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Bruce W. DuVall, James W. Valentine, Kenneth O. Morey