Structure of pivot joint
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United States of America Patent
Stats
-
Dec 30, 1997
Grant Date -
N/A
app pub date -
Jul 1, 1996
filing date -
Jul 1, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pivot joint including a pivot bolt, which has an elongated flat mounting rod section at one end, a screw rod section at an opposite end, which has two longitudinal planes at two opposite sides, and a collar between in the middle, a mounting frame rotatable about the screw rod section, a lock nut in threaded engagement with the screw rod section, a first packing ring mounted around the screw rod section between the mounting frame and the collar, a second packing ring mounted around the screw rod section between the mounting frame and the lock nut, a locating ring mounted around the screw rod section between the second packing ring and the lock nut and rotatable by the pivot bolt relative to the mounting frame, reversed sets of disk-like spring rings mounted around the screw rod section between the locating ring and the lock nut, and a washer mounted around the screw rod section between the spring rings and the lock nut, wherein the second packing ring has a curved flange abutting the locating ring so that the second packing ring and the locating ring are connected through a line contact.
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