Patent ID: 6145889
Filing Date: 2000-11-14
Classification: F16L,Y10S

Abstract:
In a rotary joint comprising:a joint main body constructed of a casing and a housing including means to retain said casing and said housing in assembled relationship; and a rotary body of a machine inserted in said joint main body and rotatably mounted within both the casing and the housing for prolonged rotation in both, wherein a lip packing is engaged in the casing around the rotary body and communication fluid ducts passing through the rotary body and the casing; the improvement wherein: sail joint includes a sliding bearing anda part of a peripheral surface of said rotary body serves as a corresponding inner race of a sail sliding bearing; andsaid sliding bearing rotatably supports said rotary body, and constructed of said corresponding inner race and a corresponding outer race incorporated in said housing;said lip packing being slidably engaged to both the rotary body and the casing;wherein a pin is pounded into said rotary joint parallel to a longitudinal axis of the rotary body to engage both said outer race and said housing, whereby said outer race is prevented from rotating in operation;wherein fluid flowing through said fluid ducts is prevented from reaching the sliding bearing.