Door actuation systems

Movable or removable closures – With means mounting closure for swinging – With biasing means

Reexamination Certificate

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Details

C049S379000, C296S146110, C292SDIG072, C016S290000

Reexamination Certificate

active

07971393

ABSTRACT:
A door system includes a structural member and a door that is movably mounted with respect to the structural member for movement between an open position and a closed position. A spring is mounted with respect to the structural member or the door and being sufficiently positioned to bias the door toward its open position when the door is in its closed position. Active material based actuators may selectively compress the spring prior to door closure to minimize door closing effort.

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patent: 2008/0022674 (2008-01-01), Brown et al.
patent: 3148564 (1983-04-01), None

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