Education and demonstration – Means for demonstrating apparatus – product – or surface... – Chalkboard or equivalent means having easily erasable surface
Patent
1997-06-06
1999-08-24
Hafer, Robert A.
Education and demonstration
Means for demonstrating apparatus, product, or surface...
Chalkboard or equivalent means having easily erasable surface
434408, 434418, 434429, 2484411, B43L 100, A47B 1900
Patent
active
059417137
ABSTRACT:
A mobile marker board unit has a wheeled base which mounts a pair of upright and vertically enlarged marker boards. The marker boards, as they project upwardly, are rearwardly sloped to define a triangular storage space between the marker boards. This storage space is accessible from at least one end of the unit, and is preferably provided with structure which permits storage therein. A slidable tray arrangement is mounted adjacent the lower edge of each marker board and can be moved between open and closed positions. Each tray arrangement includes an outer tray disposed directly adjacent the lower edge of the marker board and positioned for support of articles thereon. This outer tray is fixedly joined to an enlarged inner tray which is normally stored in a closed position between the marker boards, with the tray assembly being slidable into an outer position wherein the inner tray projects outwardly from the marker board adjacent the lower edge thereof.
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Magnetic Visual Control Systems catalog, p. 47, Apr. 6, 1982.
Gingrich Bryan R.
Thorp Clarkson S.
Wayner Robert C.
Hafer Robert A.
Haworth Inc.
Priddy Michael
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