Static structures (e.g. – buildings) – Framing to receive door – doorjamb – or window sash – Access portal in interior partition; e.g. – into office or...
Reexamination Certificate
2011-04-19
2011-04-19
Canfield, Robert J (Department: 3633)
Static structures (e.g., buildings)
Framing to receive door, doorjamb, or window sash
Access portal in interior partition; e.g., into office or...
C052S019000, C052S202000, C049S503000
Reexamination Certificate
active
07926229
ABSTRACT:
A cover for closing an access opening that leads to an infrequently used space within a building, such as an attic, provides thermal and acoustic insulation at the access opening. The cover may be in one or two portions, including a closure alone or a closure and a frame having an aperture that can be closed by engagement between the closure and the frame. When the cover is used alone it engages a frame or a wall circumscribing the access opening. The cover is sized and shaped to close a stairwell, or the opening at one end of a stairway, or an opening in a generally vertical wall that is not necessarily associated with a stairway. The closure and frame are each made of one or more components.
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Canfield Robert J
Herring Brent W
Lewis, Rice & Fingersh L.C.
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