Lubrication – Automobile crank and gear case service
Patent
1991-06-21
1993-02-09
Lazarus, Ira S.
Lubrication
Automobile crank and gear case service
4295, 220235, 411 34, 411 55, 411435, F16N 3300
Patent
active
051846985
ABSTRACT:
An expandable plug particularly adapted to plug an engine's oil pan drain hole. The expandable plug includes a threaded bolt, a compression plate assembled with the bolt, and a compression nut assembled with the bolt and adapted to bear against the compression plate. A resiliently deformable section of tubing is assembled in slip fit relation with the bolt, the tubing section being axially compressible and radially deformable but not being a specially molded part. With the plug located within the pan's drain hole, tightening of the compression nut causes the tubing section to bulge outwardly into a liquid sealing with the hole, and also to bulge inwardly into liquid sealing relation with the bolt, thereby plugging the drain hole against oil flow therethrough.
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Cariaso Alan B.
Lazarus Ira S.
SDI Operating Partners, L.P.
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