Patents Assigned to Sarma
  • Bearing cage, ball bearing comprising such a cage and process for assembling such a bearing
    Patent number: 6837624
    Abstract: A ball bearing which includes a cage which defines recesses for receiving balls in a single row. The cage is in the form of a ring obtained by casting or machining and is intended to be interposed between an inner ring and an outer ring of the bearing. The cage includes recesses of a first group each having an opening for positioning a ball located on a first side of the cage, while recesses of a second group each have an opening for positioning a ball located on a second side of the cage, opposite the first side.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: January 4, 2005
    Assignee: Sarma
    Inventors: Michel Buard, Norbert Gabert
  • Process for hard-coating a ball
    Patent number: 5456008
    Abstract: This invention relates to a process for hard-coating a ball, consisting in:hollowing in the outer surface of the ball a depression whose periphery lies at a certain distance from the two polar faces of the ball in order that it is bordered by elevated zones;coating the whole of the spherical outer surface with a layer of hard matter;and machining the layer over a depth such that this layer disappears completely on the elevated zones and remains only in the depression.The invention also relates to a ball employed in this process.
    Type: Grant
    Filed: March 7, 1994
    Date of Patent: October 10, 1995
    Assignee: Sarma
    Inventor: Jean-Claude Hugon