Fuel jet having stepped needle
US5662836A · kind A · utility
2Cited by
8References
14Claims
0Family size
Inventor
Key dates
| Filing date | Oct 25, 1995 |
| Grant date | Sep 2, 1997 |
| Priority date | — |
| Expiry date | Oct 25, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/38
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A carburetor includes a main fuel jet having a reciprocal needle received therein for controlling fuel as such fuel flows into an air flow passage of the carburetor. The needle includes a stepped portion which is integrally formed or rigidly affixed thereto. The stepped portion is located along the length of the needle such that is located within the fuel jet in the minimum fuel flow position of the needle. This stepped portion prevents unwanted fuel from wicking or traveling up along the length of the needle when the needle is in its minimum fuel flow position and fuel flow through the fuel jet is to be at its minimum value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.