Education and demonstration – Means for demonstrating apparatus – product – or surface... – Chalkboard or equivalent means having easily erasable surface
Reexamination Certificate
1999-06-04
2001-12-11
Rimell, Sam (Department: 3712)
Education and demonstration
Means for demonstrating apparatus, product, or surface...
Chalkboard or equivalent means having easily erasable surface
C434S414000
Reexamination Certificate
active
06328571
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to wall mounted rail systems and, more particularly, to a modular wall mounted rail system used with movable boards.
BACKGROUND OF THE INVENTION
Businesses, academic institutions, and the like have often used wall mounted boards and panels for aiding in presentations. These needs have been satisfied by using chalk boards, dry erase boards, bulletin boards and projection screens. Originally, any of these boards were fixedly mounted to a wall. This limited how and where the board could be used to provide efficient viewing.
More recently, wall systems have been used in which a track is fixed to a wall. Boards of the type described above were suspended downwardly from the track. In some cases, the board could slide along the track. This allowed the boards to be taken down when not needed, moved from room to room, or moved to a different position within a room more easily. Such wall systems, while more flexible might require removal of the board from the track for repositioning. Also, for storage each board had to occupy its own position along the wall or be removed and stored separately.
The present invention is directed to improvements in wall mounted systems for use with movable boards.
SUMMARY OF THE INVENTION
In accordance with the invention a modular wall mounted system includes movable boards with improved rollers and guiding of the boards on a rail system. The wall mounted system also includes an improved balancing tilt mechanism for mounting a projection screen to the rail system.
Broadly there is disclosed a wall mounted rail system with movable boards comprising a pair of elongate rails. Each rail has an upwardly opening channel defining an upper track and a downwardly opening channel defining a lower track, the rails being horizontally mounted in parallel spaced apart relationship on a wall surface so that one of the rails defines an upper rail and the other rail defines a lower rail. Means are provided for movably mounting a board to the rails comprising an upper bracket secured to a top of the board and having a guide element received in the upper track of the upper rail and a lower bracket secured to a bottom of the board and having a guide element received in the lower track of the lower rail.
It is a feature of the invention that the upper bracket guide element comprises a roller and the lower bracket guide element comprises a guide pin.
It is another feature of the invention that the mounting means comprises a tilt mechanism for adjusting an angle of the board relative to the wall surface.
It is still a further feature of the invention that the tilt mechanism includes means for balancing the board at any angle of tilt. The balancing means comprises a spring operatively connecting the board to the mounting means and means for frictionally connecting the board to the mounting means.
In accordance with another aspect of the invention the board comprises an outer board and further comprising an inner board, and means for movably mounting the inner board to the rails comprising an upper guide element received in the lower track of the upper rail and a lower guide element received in the upper track of the lower rail so that the inner board moves independently of the outer board. The upper guide element comprises a guide pin. The lower guide element comprises a roller.
It is yet another feature of the invention that the roller comprises an inner roller surrounded by a roller shell and the roller shell is rotatable independently of the inner roller. The inner roller contacts a horizontal surface of the track and the roller shell contacts a vertical surface of the track so that the roller shell tends to spin in a direction opposite the inner roller.
REFERENCES:
patent: 627396 (1899-06-01), Daly
patent: 2655740 (1953-10-01), Goodrich
patent: 3363871 (1968-01-01), Slazik et al.
patent: 3731335 (1973-05-01), Chrisp
patent: 3810330 (1974-05-01), Daggy
patent: 6018915 (2000-02-01), Pomish et al.
patent: 685799 (1995-10-01), None
patent: 685913 (1995-11-01), None
patent: 0145018 (1985-06-01), None
patent: 0565039 (1993-10-01), None
Alles Matt J.
Barrett Shawn O.
Bond Paul
Dricken Dennis J.
Niver Michael A.
Bretford Manufacturing Inc.
Rimell Sam
Wood Phillips VanSanten Clark & Mortimer
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