Patent ID: 6543829
Filing Date: 2003-04-08
Classification: B60J,B60R

Abstract:
A closable portal system, for a structure having a portal comprising a substantially horizontal surface adjacent a portal top and extending behind the portal, comprising, in combination:a) a normally substantially-planar door having a substantially-flat lower segment and a substantially-flat upper segment and being structured and arranged to close the portal; b) A fold system structured and arranged to fold said door between said two substantially-flat segments along a horizontal first axis i) substantially in a plane of said door and ii) situated in an upper half of said door; and c) a rotatable connector, structured and arranged to rotate said door, situated along a horizontal second axis i) substantially in a plane of said door, ii) situated substantially along a top of said door and iii) located substantially in a plane of the substantially horizontal adjacent surfacer, d) wherein said door is structured and arranged to be opened by a lifting of a bottom of said door to about a height of said top of said door; and e) wherein said door is structured and arranged so that, when said bottom is lifted to the plane of the substantially horizontal adjacent surface, said door is stably supported by the substantially horizontal adjacent surface.