Patent ID: 7594302

Claim:
A hinge assembly, comprising: a base adapted to be secured to a support for a pane to be hinged; a first cover and a second cover, said first and said second covers being adapted to lie on each side of said pane; a block, said block being secured between said first and said second covers; said block having a flat surface flush with a flat edge of said first cover and a flat edge of said second cover; said block being recessed inwardly from lateral edges and back edges of said first and said second covers respectively so as to accommodate the pane, the pane being cutout at a mounting location thereof so as to match the contour of the block; the block having a first bore extending into said block perpendicular to said flat end thereof, each lateral edge of the block being provided with a single bore, including a second bore in a first lateral edge thereof and a third bore in a second lateral edge thereof opposite said first lateral edge, each of said second and third bores extending inwardly from a respective lateral edge and intersecting said first bore; wherein said base is secured to said block by a shaft extending from said base and engaging said first bore of said block, said second and said third bores each receiving a spring, said spring pressing against a surface of said shaft extending in said first bore thereby moving said shaft to a selected position relative to said base and providing on said shaft a detent force that maintains the pane closed in a closed position, and a restoring force closing the pane when the pane is part way open.