Flexible conduit for use in fresh air intake and gas vapor outlet incorporated into a vehicle fuel tank to eliminate whistling within the conduit
US8997793B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2012 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | Aug 8, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M37/20
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A tubing incorporated into a vehicle fuel tank system including an elongated and flexible tubular shaped body having a hollow interior exhibiting pluralities of alternating inner and outer diameter spaced locations. The inner diameter locations exhibit a first plurality of annularly projecting ribs, the outer diameter locations exhibiting a second plurality of ribs exhibiting a larger dimension. In this fashion, a plurality of individual tubing sections are incorporated into each of gas vapor (outflow) vent lines and fresh intake air (inflow) lines such that an inner airflow profile is established within the body to retard the generation of sound associated with volumetric airflow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.