Dana Corporation

Dana Automotive Systems Group, LLC

Eric W Hesher

Troy Daniel McArthy

Robert W Lehmann

Troy D McArthy

Provided herein, is a valve stem seal assembly having an elastomeric sealing element, a symmetrical retainer and a valve guide. The retainer has first portion, a second portion, a continuous stop formed between the first portion and the second portion, an inner surface and an outer surface. The valve guide has a top surface in contact with the elastomeric sealing element and a side surface in contact with the inner surface of the second portion of the retainer. The stop of the retainer projects radially inward and the retainer is symmetrical.

Valve stem seal assembly with a symmetrical retainer

A valve stem seal having an annular valve body with an upper surface, a lower surface, and defining an aperture is disclosed. The valve body is positioned for selective sealing engagement with a valve stem. At least one orifice is disposed on an inner surface of the annular valve body between the annular valve body and the valve stem. The orifice controls the rate of oil flow between the annular valve body and the valve stem.

Oil metering valve seal

An improved integral valve seal body suitable for an internal combustion engine and a method for making the valve seal body is disclosed. The valve seal body is comprised of a valve seal retainer including a cylindrical body and a metal spring seat. The valve seal retainer defines an inner cylindrical passageway and includes a radially extending flange. The metal spring seat, which may be comprised of a corrugated metal washer, is substantially or entirely encapsulated within the radially extending flange of the valve seal retainer body.

Valve seal body including encapsulated metal spring seat and method for

A valve spring seat is disclosed having at least one annular flange in facing relationship with a surface of an engine head. The flange may be part of a valve seal retainer. A radial cut extending inwardly from the radially outermost edge of the flange to an intermediate position on the flange forms two opposing free edges. The first edge is bent in a first longitudinal direction to form a first tab, and the second edge is bent in a second, opposite longitudinal direction to form a second tab. The first tab engages at least one coil of the valve spring, and the second tab engages the cylinder head to prevent rotation of the spring during reciprocation of the spring.

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Avilla, IN, United States of America

Eric W Hesher