The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 25, 1991
Filed:
Nov. 02, 1989
Michal Orain, Conflans Sainte Honorine, FR;
Glaenzer Spicer, Poissy, FR;
Abstract
A segment (14) is held for the purpose of grinding its spherical internal bearing surface (10). A toric external surface (18) is supported by claws (21) against fixed (17) and movable (19) seats in such a manner as to have a center (T) and an axis (UU') accurately positioned relative to a mount (16). A cup type grinding wheel (23) having a spherical operative surface (23a) infeeds along its axis of rotation (MS), which intersects, at a center (S) desired for the spherical bearing surface, an axis (ZZ') about which the mount (16) and the segment (14) oscillate. A sensor in contact with the bearing surface (10) controls the halting of the infeed of the grinding wheel when the radial thickness dimension of the segment is reached. A surface suitable for hydrodynamic lubrication is directly obtained by grinding, with where desired, an eccentricity (e) between the toric surface and the spherical bearing surface.