Concept based on poppable hinges. Hinge system allows door to swing open on any of four edges. Proposed system consists of four separable ball joints resembling "pop-it" beads, one at each corner of door. Made of molded plastic, joints cheap to make and install.
Door Opens Four Ways
NASA Tech Briefs ; 12 , 4
1988-04-01
Miscellaneous
No indication
English
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