|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||F16L-027/08 F16C-019/08 F16C-043/06|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 6 인용 특허 : 127|
A swivel joint has uniform ball bearing requirements for all bearing races. The swivel joint has a male connector and a female connector that coaxially interconnect and swivel relative to each other. Each connector has three bearing races to form three sets of bearing races, each of which supports that same number of ball bearings. The circumference of the main set of races are enlarged by less than the diameter of one ball.
1. In combination with a swivel joint forming a flow passage and having a central axis, the improvement comprising: a hollow tubular male connector having a first end, an annular outer surface having a main bearing race, a center bearing race, and a support bearing race, wherein each of the main, center and support bearing races having an arcuate cross-section of a same radius, and wherein the main bearing race's diameter relative to the central axis being the same as the center bearing race's diameter and less than the support bearing race's diameter, t...