Patents by Inventor Karl Steffes

Karl Steffes 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: 6266239
    Abstract: A computer system includes a chassis having a biased slider device mounted thereon. The slider device includes a plurality of connectors positioned in openings in the chassis. When the slider is in a first position, the connectors are positioned in the openings. The slider is movable to a second position removing the connectors from the openings. A cover is releasably mounted on the chassis so that cover interlock members insert into the openings engaging the connectors in the first position and disengaging from the connectors in the second position.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: July 24, 2001
    Assignee: Dell USA, L.P.
    Inventors: Stephen Cook, John Jeffries, Karl Steffes
  • Patent number: 6157532
    Abstract: A computer system includes a chassis, a microprocessor mounted in the chassis, an input coupled to provide input to the microprocessor, a mass storage coupled to the microprocessor, a display coupled to the microprocessor by a video controller, and a memory coupled to provide storage to facilitate execution of computer programs by the microprocessor. The chassis includes an elongated channel guide having openings formed therein. A slider member is movably mounted within the guide on the chassis. The slider member has a plurality of connectors thereon which are movable therewith. The connectors are positioned in the openings in the guide in response to the slider member being in a first position. The connectors are removed from the openings in response to the slider member being in a second position and an engagement member on one end of the slider member engaged with a resilient release device attached to the chassis. A cover is mounted in the chassis.
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: December 5, 2000
    Assignee: Dell USA, L.P.
    Inventors: Stephen Cook, John Jeffries, Karl Steffes
  • Patent number: 6118668
    Abstract: A computer in which an expansion card cage assembly is mounted in the computer chassis. The expansion card cage assembly includes a wall extending parallel to the chassis wall, a riser card mounted relative to the wall of the cage assembly and having a connector adapted to engage the connector of the motherboard, and at least one expansion card connected to the riser card. A lever is provided on the cage assembly wall and is adapted to engage the chassis wall to quick-detachably connect the cage assembly to the chassis.
    Type: Grant
    Filed: August 5, 1998
    Date of Patent: September 12, 2000
    Assignee: Dell USA, L.P.
    Inventors: Erica Scholder, Timothy Radloff, Karl Steffes, Stephen Cook
  • Patent number: 6053586
    Abstract: A computer system includes a chassis having a biased slider device mounted thereon. The slider device includes a plurality of connectors positioned in openings in the chassis. When the slider is in a first position, the connectors are positioned in the openings. The slider is movable to a second position removing the connectors from the openings. A cover is releasably mounted on the chassis so that cover interlock members insert into the openings engaging the connectors in the first position and disengaging from the connectors in the second position.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: April 25, 2000
    Assignee: Dell U.S.A., L.P.
    Inventors: Stephen Cook, John Jeffries, Karl Steffes
  • Patent number: 5831821
    Abstract: A computer in which an expansion card cage assembly is mounted in the computer chassis. The expansion card cage assembly includes a wall extending parallel to the chassis wall, a riser card mounted relative to the wall of the cage assembly and having a connector adapted to engage the connector of the motherboard, and at least one expansion card connected to the riser card. A lever is provided on the cage assembly wall and is adapted to engage the chassis wall to quick-detachably connect the cage assembly to the chassis.
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: November 3, 1998
    Assignee: Dell Computer Corporation
    Inventors: Erica Scholder, Timothy Radloff, Karl Steffes, Stephen Cook
  • Patent number: 5457608
    Abstract: A printed circuit board mounting apparatus for securing a printed circuit board within a chassis includes a track affixable to the chassis and a locking mechanism affixable to the printed circuit board. The track, which includes a plurality of locking points, is slidably received within the locking mechanism, which engages the track at any of the several locking points to secure the track within the locking mechanism. The mounting apparatus described herein enables the chassis to accommodate printed circuit boards of different sizes without mechanical modification of the chassis.
    Type: Grant
    Filed: October 28, 1993
    Date of Patent: October 10, 1995
    Assignee: Dell USA, L.P.
    Inventors: Erica Scholder, Karl Steffes, Robert Garrett
  • Patent number: 5452184
    Abstract: A fastener for securing a printed circuit board to a chassis includes a body portion, legs depending from the body portion, the legs being adapted for removable attachment within holes in the chassis, a hook for slidably engaging a slot on a printed circuit board inserted thereon, and a grounding element for providing an electrical connection between the printed circuit board and a shield on the chassis. The fastener described herein enables one chassis design to accommodate a variety of sizes of printed circuit boards merely by forming holes at particular points on the chassis, thereby avoiding the expense of redesigning a chassis to accommodate a new printed circuit board.
    Type: Grant
    Filed: April 18, 1995
    Date of Patent: September 19, 1995
    Assignee: Dell USA, L.P.
    Inventors: Erica Scholder, Kevin Troy, Karl Steffes
  • Patent number: 5438476
    Abstract: Using a relatively simple four piece conversion kit consisting of a replacement control bracket, and vertically enlarged top housing portion, drive bay and expansion card cage replacement structures, a relatively small frame personal desktop computer is converted to a larger frame computer having upgraded expansion card and drive installation capacities. The upgrading process is effected simply by removing the existing top housing portion, drive bay, expansion card cage and control panel bracket, installing the replacement drive bay, expansion card cage and control panel bracket on the existing bottom side portion of the computer, and then operatively connecting the vertically enlarged top housing portion to the existing housing base wall. Other than the four components of the conversion kit, all of the components in the original computer are reused in the resulting upgraded computer.
    Type: Grant
    Filed: January 11, 1994
    Date of Patent: August 1, 1995
    Assignee: Dell USA, L.P.
    Inventor: Karl Steffes