Patents Assigned to Nichia Seimitsu Kogyo Co., Ltd.
  • Retainer for ball bearing
    Patent number: 4568206
    Abstract: A retainer for ball bearings includes mating plastic members (4,5) having undulating shape and adapted to accommodate a plurality of balls (3) therebetween. One of the mating plastic members (4) has a mating edge provided with recesses (9) formed therein adapted to accommodate corresponding protrusions (10) formed on the other mating plastic member (5). The plastic members (4,5) are secured together, preferably by ultrasonic welding.
    Type: Grant
    Filed: December 3, 1984
    Date of Patent: February 4, 1986
    Assignee: Nichia Seimitsu Kogyo Co., Ltd.
    Inventor: Toshiyuki Imazaike