Simplified canister for prevention of atmospheric diffusion of fuel vapor from a vehicle
US5564398A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 1994 |
| Grant date | Oct 15, 1996 |
| Priority date | — |
| Expiry date | Oct 4, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M25/0854
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A canister for preventing diffusion of fuel vapor to atmosphere is disclosed herein. The canister includes a first case having an adsorbent material, such as activated charcoal, therein and a second case also having an adsorbent material therein. The two cases are joined by a passage having a valve disposed therein. The valve regulates the airflow between the two cases. The first case is connected to the valve, a gas tank, and an engine, while the second case is connected to the valve and to atmosphere. During a refueling operation, the valve is operated so as to allow air to flow from the tank, through the first case and out to the atmosphere through the valve, without passing through the second case.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.