Universal attachment extension tube with rotational locking device
AssigneeNavistar International Transportation Corp.
InventorsEdward F. Tausk, Andrew J. DeJacimo
Life of this patent
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Abstract
An extension tube for an internal combustion engine oil fill tube comprises an elongate bent cylindrical member having one threaded end adapted to engage within a threaded port in a valve cover. The tube includes a protruding nub thereon which is positioned to coact with a cavity between segmented threads in the port to produce a detent between the tube and the port when the tube is threaded into the port to a desired relative rotational orientation, for maintaining such orientation. The tube further includes a peripheral flange which compresses a high swell material seal member placed therebeneath against an area disposed about the port to ensure integrity of the engagement.
Claims16
In combination with an internal combustion engine cover having a threaded port, an extension tube comprising a tubular structure having a first threaded end engaged within said threaded port, the extension tube including cooperative detent means thereon which cooperate with said threaded port to create a detent between the tube and the port when the tube is threadedly engaged at a desired relative rotational orientation, for maintaining such orientation.
In combination with an internal combustion engine valve cover having threaded oil fill port, an oil fill extension tube which can be positively locked into said threaded fill port at a desired relative rotational orientation relative to the valve cover, the fill tube comprising an elongate cylinder having a first threaded end rotationally engageable within the threaded port and including a protruding nub thereon which is positioned to engage a cooperating depression located at a predetermined position in the port when the desired rotational orientation is achieved.
Dependencies are inferred from the claim text.