Patents by Inventor Daniel Ralph Bischoff

Daniel Ralph Bischoff 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: 5997114
    Abstract: A non-interlock blocking element adapted for use with a furniture unit having a plurality of drawers, a vertical guide for receiving a vertical stack of blocking elements which are slidably mountable in the guide for vertical translation therein, and a wedge element associated with each of the drawers which is reciprocable into the stack of blocking elements to effect interlocking relationships among the drawers is provided. The non-interlock blocking element allows such furniture units which are adapted for use with interlocking mechanisms, to be configured as non-interlocking furniture units, or as partially interlocking furniture units. The non-interlock blocking elements are generally similar to standard interlock blocking elements, but include a recess which allows unobstructed reciprocation of a wedge element associated with a drawer when the recess is in horizontal alignment with the wedge element, whereby the drawer can be opened irrespective of whether another drawer is already opened.
    Type: Grant
    Filed: February 25, 1999
    Date of Patent: December 7, 1999
    Assignee: Steelcase Development Inc.
    Inventor: Daniel Ralph Bischoff
  • Patent number: 5931548
    Abstract: A non-interlock blocking element adapted for use with a furniture unit having a plurality of drawers, a vertical guide for receiving a vertical stack of blocking elements which are slidably mountable in the guide for vertical translation therein, and a wedge element associated with each of the drawers which is reciprocable into the stack of blocking elements to effect interlocking relationships among the drawers is provided. The non-interlock blocking element allows such furniture units which are adapted for use with interlocking mechanisms, to be configured as non-interlocking furniture units, or as partially interlocking furniture units. The non-interlock blocking elements are generally similar to standard interlock blocking elements, but include a recess which allows unobstructed reciprocation of a wedge element associated with a drawer when the recess is in horizontal alignment with the wedge element, whereby the drawer can be opened irrespective of whether another drawer is already opened.
    Type: Grant
    Filed: February 18, 1997
    Date of Patent: August 3, 1999
    Assignee: SteelCase Inc.
    Inventor: Daniel Ralph Bischoff