Patent ID: 9080378
Filing Date: 2015-07-14
Classification: E06B

Abstract:
1. A collapsible door assembly comprising: a body formed to include a cavity and a collapsible portion located above said cavity and configured to be capable of moving into said cavity, said collapsible portion being configured to transition between an uncollapsed state and a collapsed state in which it occupies said cavity, the top surface of said collapsible portion being approximately horizontal in the uncollapsed state and the top surface of the body being sloped such that the door assembly is configured so that it has no hanging points when the collapsible portion is in the collapsed state in said cavity, and a pressure sensor in contact with the collapsible portion which pressure sensor is configured to cause the collapsible portion to transition from the uncollapsed state to the collapsed state when a force which exceeds a predetermined amount is applied to the upper surface of said collapsible portion.