Movable barrier roller guard

Details Movable barrier roller guard Movable barrier roller guard

2005-11-23

2009-06-23

Mitchell, Katherine W (Department: 3634)

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

With mounting or supporting means

C016S091000

Reexamination Certificate

active

07549456

ABSTRACT:
A door system (10) having, a door (D), a plurality of track sections (16, 17, 18) having a cross-section defining an interior track area (50) that is accessible though an opening (51) therein, a roller (25) received in the interior track area and coupled to a shaft (26) that is operatively interconnected with the door, and a guard (60) carried by the shaft and at least partially enclosing the roller, wherein the guard includes a shield (62) wall that is positioned within the interior track area and at least partially obstructs the opening in the area of the roller.

REFERENCES:
patent: 5528862 (1996-06-01), Streeter
patent: 6125506 (2000-10-01), Martin
patent: 6227281 (2001-05-01), Martin
patent: 6463989 (2002-10-01), Johnson
patent: 6540003 (2003-04-01), Martin
patent: WO 99/36632 (1999-07-01), None
patent: WO 02/41758 (2002-05-01), None
patent: WO 03/004217 (2003-01-01), None
patent: WO 03/098096 (2003-11-01), None

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