Butterfly valve for skylight

Details Butterfly valve for skylight Butterfly valve for skylight

2006-08-01

2006-08-01

Yip, Winnie (Department: 3636)

Static structures (e.g., buildings)

Cupola or skylight

C052S022000, C052S173300, C359S597000, C126S623000

Reexamination Certificate

active

07082726

ABSTRACT:
A valve for selectively blocking the light passageway of a skylight includes a cylindrical shroud and first and second semicircular butterfly valve elements that pivot on respective axles within the shroud to selectively block the skylight. The axles can ride on a common motor-driven cam between a horizontal orientation to block the skylight and a vertical orientation to allow light to pass. The motor can be powered by a universal power supply that can operate at anywhere from below 100 volts to above 270 volts.

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patent: 2003-64831 (2003-03-01), None

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