Patent ID: 6442896
Filing Date: 2002-09-03
Classification: E04D,E05D,E05Y

Abstract:
A hatch apparatus for sealing an opening in a surface enclosure, said apparatus comprising:a hatch lid having a plurality of straight, non-collinear lid hinge segments forming a perimeter; a frame having a plurality of straight, non-collinear frame hinge segments, said frame defining an aperture that is selectively openable and sealable by said lid, said plurality of frame hinge segments being equal in number to said plurality of lid hinge segments; and an adjustable prop assembly disposed across said aperture; wherein said frame is mountable on said enclosure surface; wherein said lid when opened is supportable by said prop assembly throughout a range of dihedral angles formable between said lid and said frame, and wherein a hinge axis is established by coupling a particular one of said frame hinge segments with a corresponding one of said lid hinge segments.