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BALL JOINT, ESPECIALLY FOR STEERING DEVICES AND WHEEL SUSPENSIONS OF MOTOR VEHICLES

  • US 3,740,986 A
  • Filed: 01/18/1971
  • Issued: 06/26/1973
  • Est. Priority Date: 01/08/1969
  • Status: Expired due to Term
First Claim
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1. A method of making a joint unit, especially for connecting rods, steering devices and wheel suspensions of motor vehicles, which has a hollow ball head and a tubular extension integral with said ball head, said method including the steps of:

  • cutting a section of a desired length off deformable metallic tubular stock material, and deforming said cut-off section merely by the application of pressure thereon into a unitary member having a hollow ball head and a tubular extension while the cross-sections of wall thickness throughout said unitary member vary to be unequal in the direction transverse to the axial direction of said unitary member so as to increase in cross-section with the outer diameter becoming smaller assuring constant rigidity against bending, pulling and pressure.

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