Patents by Inventor Kurt A. Jonker

Kurt A. Jonker 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: 5992109
    Abstract: A demountable floor-to-ceiling wall for subdividing a building work space comprises a first core panel including two parallel spaced-apart and substantially identical side faces in mutual horizontal registry. Each core panel has a panel periphery with a top edge, a bottom edge, and at least two side edges and an outwardly facing channel therein. A first core panel is vertically oriented and positioned to be supported by the building floor. A second core panel of substantially identical construction as the first core panel is vertically stacked upon and substantially co-planar with the first core panel. The first and second core panels extend from the floor toward the ceiling and are secured in a generally upright vertical orientation. A panel connector bar is interposed between the first and second core panels.
    Type: Grant
    Filed: April 14, 1997
    Date of Patent: November 30, 1999
    Assignee: Steelcase Development, Inc.
    Inventor: Kurt A. Jonker
  • Patent number: 5802789
    Abstract: A partition panel includes a partition frame with a planar face having clip-receiving apertures for supporting cover panels and bracket-receiving apertures for supporting furniture components. A pair of cover panels configured to cover the partition frame include side edges that define a gap therebetween for providing access to the bracket-receiving apertures when the cover panels are attached to the partition frame. Clips on the cover panels are constructed to releasably engage the clip-receiving apertures for retaining the cover panels on the partition frame in a coplanar arrangement. The clips each include an antidislodgement tooth for interlockingly engaging a back surface of the face when the clips are engaged with the clip-receiving apertures, and further include a release tab that is depressible to move the tooth to a disengaged position for releasing the clip from the associated clip-receiving aperture.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: September 8, 1998
    Assignee: Steelcase, Inc.
    Inventors: Steven F. Goodman, Kenneth D. Brickner, Melissa A. DuBuis, Daniel Grabowski, Allen C. Hager, Robert E. Jeffers, Karl J. Mead, Scott M. Miller, Kurt A. Jonker
  • Patent number: 5598789
    Abstract: Disclosed is a vertically adjustable table or workstation comprising a pair of vertically adjustable leg assemblies, each having a foot member attached to the lower end and a work surface support member attached to the upper end and a planar work surface attached to the tow work surface support members. A substantially horizontal cross beam member extends between the pair of vertically adjustable leg assemblies and contains pulley and cable structure connected to the vertically adjustable leg assemblies which use a conventional extension drawer slide assembly mounted in a vertical position to adjust the vertical height of the work surface.
    Type: Grant
    Filed: January 18, 1996
    Date of Patent: February 4, 1997
    Assignee: Knoll, Inc.
    Inventor: Kurt A. Jonker
  • Patent number: 5598788
    Abstract: A vertically adjustable desk, table or workstation has a work surface carried between a pair of leg assemblies. The leg assemblies have telescoping sleeves and a ratcheting latch mechanism operatively interconnecting the sleeves. The ratcheting latch mechanism has a toggle preferably in the inner sleeve and a ratchet opening, preferably in the outer sleeve. The opening is defined in part by an edge formed with a series of lateral inclined ratchet slots at which a latch pin on the toggle can set the vertical height. The toggle is spring biased to either of two over-center alignments. Upper and lower edges of the opening respectively toggle the latch mechanism to move the pin out of engagement with the slots at the top limit of travel, and back into engagement with the slots at the bottom limit of travel. The latch pin follows the ratchet slots in progression as the table is raised, and is switched by the top and bottom edge portions to disengage or engage the slots.
    Type: Grant
    Filed: December 2, 1994
    Date of Patent: February 4, 1997
    Assignee: Knoll, Inc.
    Inventor: Kurt A. Jonker