BALL JOINT
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United States of America Patent
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app pub date -
May 15, 2015
filing date -
May 15, 2014
priority date (Note) -
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Abstract
The ball joint includes: a ball stud including: a shaft member; and a ball portion formed at one end of the shaft member; and a holder made of a synthetic resin and configured to accommodate the ball portion in a pivotable manner. The holder includes: an opening portion from which the shaft member protrudes; a first member including a first ball sliding contact surface having a concave spherical shape approximate to a spherical surface of the ball portion; and a second member including: a second ball sliding contact surface having a concave spherical shape approximate to the spherical surface of the ball portion; and the opening portion formed in a center of the second ball sliding contact surface. Further, the first member and the second member respectively include joining surfaces fixed to each other by welding, and respectively include fixation reference surfaces that are brought into abutment against each other.
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