Patent ID: 7025391

Claim:
A non-permeable pipe connector structure, comprising: a coupling nipple having a plurality of annular grooves at one extremity and a ball bearing race between one said annular groove and another said annular groove, the ball bearing race containing a ball bearing holder, each said annular groove having a rubber sealing ring seated therein, said ball bearing holder having a plurality of ball bearings nested thereon; a connector base having a ball bearing groove disposed inside that accommodates the ball bearings; the ball bearing holder including a plurality of circumferentially-arranged, spaced-apart socket sections, each of which receives a respective ball bearing to locate the ball bearings, and a protective flange constituting a bottom surface of the ball bearing holder, the protective flange having an outer circumferential edge that contacts an inside surface of the connector base; wherein when the coupling nipple is fastened to the connector base, the protective flange blocks external matter and thereby precludes entry to avert subsequent damage to the bearings.