Openable hatch apparatus for a skylight

Static structures (e.g. – buildings) – Barrier or major section mounted for in situ repositioning;... – Movable cupola or section thereof

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Details

52200, E04B 718

Patent

active

056691866

ABSTRACT:
An openable skylight apparatus covering a roof opening having a raised curb around its perimeter. The skylight including glazing that substantially covers the opening. A frame assembly surrounds the glazing and has a depending skirt that opposes outer surfaces of the curb. A hinge, joining one side of the frame to the curb includes a bearing within a cradle that allows the frame assembly to pivot to open the skylight. The cradle has a lower and a higher end and extends by an arc greater than 180 degrees and less that a full circle between the ends. The bearing has a periphery that includes a convex surface, two chordal flat surfaces converging toward a lower convex surface and a higher convex surface diametrically opposite the other. When the bearing is rotated to a position in which the lower convex surface is at a higher elevation than the lower end of the cradle, the bearing may be pulled out of the cradle to separate the frame assembly from its hinged connection with the curb.

REFERENCES:
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patent: 4073097 (1978-02-01), Jentoft et al.
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patent: 4466221 (1984-08-01), Couture
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patent: 4750302 (1988-06-01), Bechtold
patent: 4986039 (1991-01-01), Weisner
patent: 5103603 (1992-04-01), Verby et al.
patent: 5148643 (1992-09-01), Sampson et al.
patent: 5207036 (1993-05-01), Sampson et al.

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