Static structures (e.g. – buildings) – Wall – ceiling – or floor designed for utilities – Multiple passageway or multicellular load-bearing units
Patent
1994-11-21
1996-08-13
Friedman, Carl D.
Static structures (e.g., buildings)
Wall, ceiling, or floor designed for utilities
Multiple passageway or multicellular load-bearing units
522208, 52480, 52636, E04C 252
Patent
active
055444598
ABSTRACT:
A duct chase frame is substituted for a portion of the length of a conventional wooden or metal floor joist to facilitate running hot or cold air ductwork, plumbing and even electrical wiring. The frame includes a pair of elongated metal channels of uniform cross-sectional configuration with two metal spacers spanning and maintaining a joist accepting separation between those channels. One of the spacers is generally U-shaped for receiving and cradling a lower edge of one end of a floor joist, and the other spacer has an inverted U-shape for engaging an upper edge of the floor joist in a location intermediate the joist ends. The inverted U-shaped support is located near a first end of the pair of metal channels and the U-shaped support is located intermediate the metal channel ends. There may be a second inverted U-shaped support near a second end of the pair of metal channels for maintaining the separation between the pair of channels and for receiving and supporting a floor nailer. Similar arrangements are made for providing ceiling nailers. When the duct chase frame is substituted for an intermediate portion of the length of a conventional wooden or metal floor joist, a second generally U-shaped spacer for receiving and cradling a lower edge of one end of one portion of the floor joist a third inverted U-shaped support are included.
REFERENCES:
patent: 2477394 (1949-07-01), Spiker
patent: 3707817 (1973-01-01), Schmitt et al.
patent: 4937998 (1990-07-01), Goldberg
patent: 5058352 (1991-10-01), Loiselle et al.
PCT WO94/10405, May 1994, Abstract.
Edwards W. Glenn
Friedman Carl D.
Rickert Roger M.
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