Unitary molded plastic valve seal
US4834037A · kind A · utility
26Cited by
26References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 14, 1987 |
| Grant date | May 30, 1989 |
| Priority date | — |
| Expiry date | Oct 14, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3268
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A unitary molded valve seal assembly includes a plastic body and an elastomeric seal which is molded in-situ within the plastic body. The plastic seal body preferably fabricated of Hytrel plastic and includes a plurality of obliquely oriented ribs or lips on its inside surface which seal against an engine valve guide. The elastomeric seal is preferably fabricated of Viton rubber and defines an irregular surface having curved regions which retain it within the seal body and a pair of spaced apart lips which sealingly engage the value stem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.