Static structures (e.g. – buildings) – Sheetlike element assembled parallel to existing wall,... – Element spaced from wall – ceiling – or floor and held by...
Patent
1992-12-24
1994-11-15
Friedman, Carl D.
Static structures (e.g., buildings)
Sheetlike element assembled parallel to existing wall,...
Element spaced from wall, ceiling, or floor and held by...
52667, 52DIG5, 403363, E04B 900
Patent
active
053636228
ABSTRACT:
A suspended grid system to support screw applied drywall ceilings. The system includes parallel rows of main runners suspended from the structural ceiling. Cross channel members are attached in parallel rows at right angles to the main runners. Drywall is screw attached to the lower surface of the cross channel members. Connectors are formed on the ends of the cross channel members which engage and lock to the main runners. Each such connector uses two upper latches and two lower tongue shaped stop shoulders. The lower stop shoulders will collapse in a controlled manner to relieve excessive compression as would be created from thermal expansion. The main runner will also provide a means for relieving thermal expansion.
REFERENCES:
patent: 3367695 (1968-02-01), Haertel et al.
patent: 4208851 (1980-06-01), Sauer
patent: 4866900 (1989-09-01), Dunn
Armstrong World Industries Inc.
Friedman Carl D.
Wilkens Kevin D.
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