PCV assembly and fitting
US6782878B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 27, 2003 |
| Grant date | Aug 31, 2004 |
| Priority date | — |
| Expiry date | May 27, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M35/10327
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A PVC assembly includes a tubular fitting which significantly reduces the possibility of vapors freezing so as to block the PCV passage entry into a manifold. The fitting may be a material, such as nylon, with low heat conductivity as compared to a metal fitting and which is thermally isolated by an air gap from the PCV inlet opening of an aluminum metal manifold to minimize heat loss to the manifold walls. A mounting portion of the fitting includes a primary seal and a secondary seal/retainer that provides backup sealing and also acts as a snap-in retainer that releasably holds the fitting in the manifold PCV inlet opening without further retaining means. A simplified inlet fitting with both retaining and heat conserving features is thereby provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.