Patent · US Active

Valve stem seal

US9284863B2 · kind B2 · utility

3Cited by

10References

20Claims

0Family size

Assignee

AKTIEBOLAGET SKF · SE

Inventors

Juergen Kurth · Odenthal, DE
Juergen Netzer · Burscheid, DE

Key dates

Filing date	Sep 27, 2012
Grant date	Mar 15, 2016
Priority date	—
Expiry date	Sep 27, 2032

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16K41/04
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A valve stem seal (1) seals a valve stem (4) that is reciprocally movable in an axial direction. The valve stem seal includes a base body (8) that is connectable with a valve stem guide (6). A first seal lip (10) is resiliently positioned relative to the base body via an elastic connection (16) and seals the valve stem relative to an oil chamber (24). A second seal lip (12) is spaced in the axial direction (2) from the first seal lip and seals the valve stem relative to a gas chamber. The second seal lip is also resiliently positioned relative to the base body via the elastic connection.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.