摘要 |
1,112,558. Blasting. SOCIETE ANONYME ANDRE CITROEN. 4 Aug., 1965 [6 Aug., 1964], No. 33433/65. Heading B3D. The rotary member/members of a ball joint, e.g. a ball and socket joint for use in vehicle suspension, is/are finished, after machining, by particle blasting, to enhance lubricant retention. The particles are preferably shot, and the irregularities produced on the treated surface are of the order of from one or more microns to a few tens of microns. |