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FOUR-MOTION JOINT WITH A BALL-SHAPED HEAD |
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Description
Round trunnions b of link 3 fit into holes in clevis a of link 1. Ball-shaped head c at the other end of link 3 fits into spherical recess d of link 2. With respect to each other, links 1 and 2 accomplish four turning motions about the three perpendicular axes intersecting at point 0 and about axis x' -x' . |
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