Valve stem seal comprising a valve rotating device
AssigneeFederal-Mogul Valvetrain GmbH
InventorsDIRK SCHOBER, FRANK ZWEIN, FLORIAN RINGELING, THORSTEN MATTHIAS, STEFAN KELLERMANN
Life of this patent
Estimating the term…
Abstract
A valve rotating device with valve stem seal includes a valve rotating device, with a cylinder head rest and a spring rest intended to bear against a valve spring during operation. The valve rotating device is designed to rotate the spring rest relative to the cylinder head rest during operation. A valve stem seal is attached to the cylinder head rest of the valve rotating device. The valve stem seal being designed to bear against a valve stem and to seal same during rotational and axial movements.
Claims15
A valve rotating device with valve stem seal, comprising:
- a valve rotating device, with a cylinder head rest and a spring rest, operative to bear against at least one valve spring during operation;
- wherein the valve rotating device is cooperates with the spring rest to rotate the spring rest relative to the cylinder head rest during operation;
- and
- wherein a valve stem seal is attached to the cylinder head rest of the valve rotating device, said valve stem seal being positioned to bear against a valve stem and to seal the valve stem during rotational and axial movements of the valve stem.
A valve rotating device with valve stem seal, comprising:
- a valve rotating device, with a cylinder head rest and a spring rest, operative to bear against a valve spring during operation wherein the spring rest is positioned to be rotated relative to the cylinder head rest by the valve rotating device during operation;
- and
- wherein a valve stem seal is attached to the spring rest, said valve stem seal being positioned to bear against a valve stem and to seal the valve stem during rotational and axial movements.
A valve rotating device with valve stem seal, comprising:
- a valve rotating device, with a spring disc and a valve stem fastening, operative to be fastened to a valve stem end during operation;
- wherein the valve rotating device is positioned to rotate the valve stem fastening relative to the spring disc during operation;
- and
- wherein a valve stem seal is attached to the valve stem fastening, said valve stem seal being positioned to bear sealingly against a valve stem.
A valve rotating device with valve stem seal, comprising:
- a valve rotating device, with a spring disc and a valve stem fastening, operative to be fastened to a valve stem end during operation;
- wherein the valve rotating device is positioned to rotate the valve stem fastening relative to the spring disc during operation;
- and
- wherein a valve stem seal is attached to the spring disc, said valve stem seal being designed to bear sealingly against a valve stem.
Dependencies are inferred from the claim text.