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US 6,745,515 B1Granted
Emergency escape door
OwnerChi Sheng Cheninventor
Life of this patent
Estimating the term…
Abstract
An emergency escape door device includes a primary door panel having an entrance formed in an inner peripheral surface inclined between a greater peripheral side contour a smaller peripheral side contour, and an auxiliary door panel pivotally secured to the primary door panel to selectively enclose the entrance of the primary door panel and having an inclined outer peripheral surface to mate with the inclined inner peripheral surface of the primary door panel. The auxiliary door panel may be disengaged from the primary door panel in such as an earthquake.
Claims4
An emergency escape door assembly comprising:
- a primary door panel including an entrance formed therein, and including an inclined inner peripheral surface formed therein to define said entrance thereof said primary door panel including a first side having a greater opening formed therein and defined by a greater peripheral contour, and a second side having a smaller opening formed therein and defined by a smaller peripheral contour, said inclined inner peripheral surface of said primary door panel being inclined between said greater peripheral contour of said first side and said smaller peripheral contour of said second side thereof, and
- an auxiliary door panel pivotally secured to said primary door panel, and to selectively enclose said entrance of said primary door panel, said auxiliary door panel including an inclined outer peripheral surface formed therein for mating with said inclined inner peripheral surface of said primary door panel, and said auxiliary door panel including a first side having a greater outer peripheral contour, and a second side having a smaller outer peripheral contour provided therein, and said inclined outer peripheral surface of said auxiliary door panel being inclined between said smaller outer peripheral contour of said second side and said greater outer peripheral contour of said first side thereof, and
- said inclined outer peripheral surface of said auxiliary door panel being slidable relative to said inclined inner peripheral surface of said primary door panel to allow said auxiliary door panel to be automatically disengaged from said primary door panel when either side of said primary door panel is subjected with a compressing force.
Dependencies are inferred from the claim text.