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Reduced inertia stem seal flange

A technology of elastic sealing and valve stem, which is applied in the direction of engine sealing, valve lift, valve device, etc., and can solve the problem of increasing flange cracks and so on

Inactive Publication Date: 2015-09-09
FREUDENBERG NOK GEN PARTNERSHIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of this prior art stem seals do not have a sufficiently flat flange portion, thereby also increasing the likelihood of cracks in the flange

Method used

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  • Reduced inertia stem seal flange
  • Reduced inertia stem seal flange
  • Reduced inertia stem seal flange

Examples

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Embodiment Construction

[0018] Exemplary embodiments will now be described more fully with reference to the accompanying drawings.

[0019] Example embodiments are provided so that this invention will be thorough, and will fully convey the scope of the invention to those skilled in the art. In order to provide a thorough understanding of the embodiments of the invention, numerous specific details are set forth, such as embodiments of specific components, devices and methods. It will be apparent to those skilled in the art that specific details may not be required, that example embodiments may be embodied in various different forms and that neither should be construed to limit the scope of the invention. In some example embodiments, well-known methods, well-known device structures, and well-known technologies are not described in detail.

[0020] The terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. As used herein, the ...

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PUM

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Abstract

A valve stem seal including a radially outwardly extending flange that includes one or more circumferential grooves to allow the flange to flex and lay flat against a support surface and protect the flange from fatigue.

Description

technical field [0001] The present invention relates to valve stem seals, and in particular to valve stem seals or valve stem seal assemblies with integrated spring seats, preferably for use in internal combustion engines, but are also suitable for use in other valve stem seal applications. Background technique [0002] This section provides background information related to the present disclosure which is not necessarily prior art. [0003] For example, the main function of a valve stem seal in an internal combustion engine is to allow proper lubrication at the valve stem / valve guide interface while ensuring that internal oil consumption is minimized. Valve stem seals of this general type are known in the art, for example, as shown in US Patent Nos. (Additionally, two-piece stem seals of this general type are shown in U.S. Patent Nos. 6,901,902 and 5,775,284, assigned to the same assignee as the present invention.) [0004] Stem seal assemblies generally include a rigid s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L3/08
CPCF01L3/10F16J15/3252F01L3/08
Inventor J·A·伦敦P·L·沙伊布
Owner FREUDENBERG NOK GEN PARTNERSHIP