Double cardan universal joint
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United States of America Patent
Stats
-
Apr 2, 1985
Issued Date -
N/A
app pub date -
Mar 30, 1983
filing date -
Jan 10, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improvement in a double Cardan universal joint having a pair of spiders connected by a ring-shaped coupling member, a pair of yoke members angularly movably connected with each other by the spiders, a centering assembly for aligning the yoke members with each other and defining a reservoir for grease within a bridge forming a part of one of the yoke members and a breather hole formed in the bridge for making the reservoir communicate with the atmosphere. The improvement comprises a valve of elastic material inserted in the breather hole and capable of elastically blockading the communication of the reservoir with the atmosphere when internal pressure of the reservoir is below a predetermined amount and being elastically deformed to make the reservoir communicate with the atmosphere when the internal pressure reaches or exceeds the predetermined amount.
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