Pipe joints or couplings – U-type
Reexamination Certificate
2005-02-08
2005-02-08
Bochna, David (Department: 3679)
Pipe joints or couplings
U-type
C285S419000, C074S424820, C074S424860, C074S424870
Reexamination Certificate
active
06851722
ABSTRACT:
A coupled circulation tube for a ball screw unit. The tube is formed on a planar surface at one side of the ball screw bearing, each tube joined to two circulation holes. Each circulation tube is formed by coupling two symmetrical rigid metallic half tubes at recessed grooves and flanges interposedly arrayed one after another longitudinally along the wall of each half tube to form a resultant U shaped arcuate elbow tube for ball circulation such that it is firmly constructed with a desired toughness free from loosening, cracking or deforming by constant collision and abrasion of the rolling balls.
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Chiu Yueh-Ling
Yang Paul
Bacon & Thomas
Bochna David
Hiwin Technologies Corp.
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