Air breather plug assembly for use in power transmission unit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 3, 1989
Grant Date -
N/A
app pub date -
Jul 24, 1987
filing date -
Jul 25, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An air breather plug assembly adapted for use in a transmission or trans-axle casing includes a cylindrical plug body detachably threaded into an upper portion of the casing and having an inner end portion which extends into an interior of the casing in a predetermined length, a cup-shaped baffle-plate fixedly coupled within the inner end portion of the plug body and being formed with a slot for permitting the flow of air passing therethrough, a cup-shaped seal member of elastic material fixedly coupled within an outer end portion of the plug body and spaced from the baffle-plate in a predetermined distance, the seal member being formed with a slit to be opened by an internal pressure applied thereto from the interior of the casing through the baffle-plate, and a cap fixedly coupled over the outer end portion of the plug body in such a manner as to allow the air flowing from the interior of the plug body to the exterior through the slit of the seal member.
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