Comprising nested open curved portions attached to hinged members:
(under subclass 221) Hinge wherein the device for swingably connecting two hinged members* comprises two interengaged portions secured to or formed on the respective hinged members and curved in a section about the hinge axis*, each portion having a concave surface and a convex surface, wherein the convex surface of one portion is adapted to move along the concave surface of the other portion as the hinged members* swing about the hinge axis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
260+, for a hinge comprising nested open curved portions which are engaged or disengaged to join or disjoin the hinged members*.