Static structures (e.g. – buildings) – Wall – ceiling – floor – or roof designed for ventilation or...
Reexamination Certificate
2005-05-24
2005-05-24
Friedman, Carl D. (Department: 3635)
Static structures (e.g., buildings)
Wall, ceiling, floor, or roof designed for ventilation or...
C052S473000, C454S274000, C454S278000, C454S290000
Reexamination Certificate
active
06895719
ABSTRACT:
A dust and debris disposal system has a floor-mounted housing adapted to be mounted over an opening formed in a floor for receiving debris particles swept thereto, and a set of dust loosening ribs fixed to an projecting forwardly from a posterior portion of the housing. The invention is improved wherein the dust loosening ribs are moveably mounted on the housing. In one embodiment, the dust loosening ribs and a decorative cover are pivotally attached to the housing by means of a hinge. In another embodiment a rib insert is supported by as ledge structure on the housing and may be snap fit relative to the housing.
REFERENCES:
patent: 5458408 (1995-10-01), Cooper et al.
patent: 5758462 (1998-06-01), Finn
patent: 5974749 (1999-11-01), Herbert
patent: 6012260 (2000-01-01), Hendrick et al.
patent: 6322442 (2001-11-01), Cordell
Andrus Sceales Starke & Sawall LLP
Herbert Mark S.
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