A single sweep eraser system allows cleaning of a whiteboard with a single, simple and rapid motion across the board. The system provides track brackets and glides that support a cleaning bar applying sufficient pressure to a cleaning pad extending the height of the board to provide broad area cleaning without the need for the user to “lean in” hard against the cleaning pad. The tracks conveniently hold the cleaning bar off to one side of the board for ready access.

A rotating painting apparatus includes a plurality of painting stations rotatably mounted to a base plate and each station having 2, 3, 4, or more faces on which to apply paint. A painting station includes a drive shaft rotatably coupled to the base plate. Rotation of the drive shaft causes the painting station to swivel, i.e., to rotate. The stretched frame member includes upstanding side support members extending from the bottom wall and about which a length of canvas may be stretched to form a painting station having two faces (front and rear), three faces (triangular), or four faces (cube), and so on. A chain drive operated by a drive motor enables all of the frame assemblies to be rotated together. The apparatus may include a motion sensor operable to actuate the motor and drive shaft to cause rotation when motion is detected.

A rotating painting apparatus includes a plurality of painting stations rotatably mounted to a base plate and each station having 2, 3, 4, or more faces on which to apply paint. A painting station includes a drive shaft rotatably coupled to the base plate. Rotation of the drive shaft causes the painting station to swivel, i.e., to rotate. The stretched frame member includes upstanding side support members extending from the bottom wall and about which a length of canvas may be stretched to form a painting station having two faces (front and rear), three faces (triangular), or four faces (cube), and so on. A chain drive operated by a drive motor enables all of the frame assemblies to be rotated together. The apparatus may include a motion sensor operable to actuate the motor and drive shaft to cause rotation when motion is detected.

A defense mobile device for securing a door during shelter-in-place situations. The device includes wheels rendering it mobile and stops that, when activated, hold the device stationary. A panel has a ballistic core that resists bullets, a front face, an opening, and a cover positioned over the opening to overlay and enclose a door knob protruding through the opening. The front face forms, or has affixed to it, a writing surface. The panel pivots between a plurality of angled positions to facilitate writing and an upright position flat against the door. A locking rod, rotatably connected to the panel, pushes and pulls the panel between its angled positions and its upright position. A portal defined by a ballistic door viewer or viewport is located in the panel and permits viewing or observing through the panel. A release system is configured to deactivate the stop and enable the device to move.

A display board, for writing and drawing with an interchangeable whiteboard, blackboard, or electronic surface that is pressure sensitive to a marker, chalk, or stylus through the use of a pressure sensitivity matrix. A software system implemented with the pressure sensitive matrix will be able to learn from the user's natural writing behavior, natural spaces and pauses in writing, and their writing size, and with these metrics, will be able to identify or predict a long pause in the action of writing. When this pause happens, the surface physically shifts upwards through the use of two linear actuators; the shift amount being determined by the user's writing size. The board is also able to shift upwards once the writer progresses to the opposite vertical edge of the drawing surface or can shift either upwards or downwards manually with two buttons on the side of the board.

A display board, for writing and drawing with an interchangeable whiteboard, blackboard, or electronic surface that is pressure sensitive to a marker, chalk, or stylus through the use of a pressure sensitivity matrix. A software system implemented with the pressure sensitive matrix will be able to learn from the user's natural writing behavior, natural spaces and pauses in writing, and their writing size, and with these metrics, will be able to identify or predict a long pause in the action of writing. When this pause happens, the surface physically shifts upwards through the use of two linear actuators; the shift amount being determined by the user's writing size. The board is also able to shift upwards once the writer progresses to the opposite vertical edge of the drawing surface or can shift either upwards or downwards manually with two buttons on the side of the board.

An easel apparatus may be converted between a table configuration with a horizontal work surface and an easel configuration with inclined work surfaces, wherein the apparatus has an unchanging footprint when adjusted between the easel and the table configurations.

A defense mobile device for securing a door during shelter-in-place situations. The device includes wheels rendering it mobile and stops that, when activated, hold the device stationary. A panel has a ballistic core that resists bullets, a front face, an opening, and a cover positioned over the opening to overlay and enclose a door knob protruding through the opening. The front face forms, or has affixed to it, a writing surface. The panel pivots between a plurality of angled positions to facilitate writing and an upright position flat against the door. A locking rod, rotatably connected to the panel, pushes and pulls the panel between its angled positions and its upright position. A portal defined by a ballistic door viewer or viewport is located in the panel and permits viewing or observing through the panel. A release system is configured to deactivate the stop and enable the device to move.

A defense mobile device for securing a door during shelter-in-place situations. The device includes wheels rendering it mobile and stops that, when activated, hold the device stationary. A panel has a ballistic core that resists bullets, a front face, an opening, and a cover positioned over the opening to overlay and enclose a door knob protruding through the opening. The front face forms, or has affixed to it, a writing surface. The panel pivots between a plurality of angled positions to facilitate writing and an upright position flat against the door. A locking rod, rotatably connected to the panel, pushes and pulls the panel between its angled positions and its upright position. A portal defined by a ballistic door viewer or viewport is located in the panel and permits viewing or observing through the panel. A release system is configured to deactivate the stop and enable the device to move.

A display board, for writing and drawing with an interchangeable whiteboard, blackboard, or electronic surface that is pressure sensitive to a marker, chalk, or stylus through the use of a pressure sensitivity matrix. A software system implemented with the pressure sensitive matrix will be able to learn from the user's natural writing behavior, natural spaces and pauses in writing, and their writing size, and with these metrics, will be able to identify or predict a long pause in the action of writing. When this pause happens, the surface physically shifts upwards through the use of two linear actuators; the shift amount being determined by the user's writing size. The board is also able to shift upwards once the writer progresses to the opposite vertical edge of the drawing surface or can shift either upwards or downwards manually with two buttons on the side of the board.