Valve seal body including encapsulated metal spring seat and method for making the same
AssigneeDana Corporation
InventorsEric Hesher, Troy McArthy
Life of this patent
Estimating the term…
Abstract
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.
Claims20
A valve seal body suitable for an internal combustion engine, comprising:
- a valve seal retainer with a lower surface, the retainer including a cylindrical body which defines an inner cylindrical passageway and a radially extending flange substantially adjacent to the lower surface of the valve seal retainer, and
- a metal spring seat, which is substantially encapsulated within the flange of the valve seal retainer.
A valve seal body suitable for an internal combustion engine, comprising:
- a valve seal retainer with a lower surface, the retainer including a cylindrical body that defines an inner cylindrical passageway and a radially extending flange;
- and
- a metal spring seat including a corrugated metal washer having a plurality of alternating top and bottom portions, wherein the metal spring seat is substantially encapsulated within the flange of the valve seal retainer and the alternating lower portions of the metal washer are substantially adjacent to the lower surface of the valve seal retainer.
A method for making a valve seal body suitable for an internal combustion engine, comprising:
- providing a metal spring seat;
- providing a mold having a mold cavity of a desired configuration;
- securing the metal spring seat within the mold cavity at a given location;
- and
- molding a heat-resilient plastic material around the metal spring seat and forming a valve seal retainer with a lower surface and a radially extending flange substantially adjacent to the lower surface substantially encapsulating the metal spring, seat within the flange of the valve seal retainer.
Dependencies are inferred from the claim text.