180.degree. concealed hinge
AssigneeAT&T Bell Laboratories
InventorAlbert Pedoeem
Life of this patent
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AssigneeAT&T Bell Laboratories
InventorAlbert Pedoeem
Estimating the term…
A 180.degree. concealed hinge includes two pivots which are advantageously arranged to provide a deterministic opening sequence. The hinge comprises a frame leaf member and a door leaf member which are pivotally connected to a mounting leaf member. In one embodiment of the invention, the deterministic opening sequence is obtained by employing a loose fit pivot and a friction fit pivot. The deterministic opening sequence is such that rotation occurs first about the loose fit pivot from a closed position to an approximately 90.degree. open position when an opening rotational force is applied to the door leaf member. Upon reaching the 90.degree. open position, further rotation about the loose fit pivot is prevented by a unique stop arrangement. Then, rotation can occur about the friction fit pivot for an additional 90.degree.. Further rotation about the friction fit pivot is prevented by also employing another unique stop arrangement. Consequently, a door attached to the hinge is restricted to opening in a deterministic sequence to 180.degree. in total.
A 180.degree. two pivot concealed hinge, comprising:
Dependencies are inferred from the claim text.