主权项 |
1. A hinged joint, comprising
a. a condyle set which includes a means for attachment to the end of a long structural member, b. a pair of sockets with lubricious surface characteristics with respect to said condyle set, into which rest said condyle set, c. a pulley, d. a flexible cord which passes around said pulley and is capable of being subject to tensile urges on either end, e. a torque arm with means for attachment to a structural member which is to be rotated, f. a means of transferring the sum of said tensile urges exerted in said cord into said sockets for the purpose of being reacted by said condyle set and, g. a means for transferring the difference of said tensile urges in said cord acting about the center of rotation of said sockets riding in said condyle set into a torsional urge in said torque arm. |