Carburetor for internal combustion engines, especially very small portable engines
US4455266A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 9, 1982 |
| Grant date | Jun 19, 1984 |
| Priority date | — |
| Expiry date | Jul 9, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/81
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A carburetor for internal combustion engines, especially for very small portable engines. The carburetor has a control chamber arranged in the carburetor in the fuel supply to the intake pipe. The control chamber is connected with the intake pipe via inlet passages, the rate or quantity of flow through which can be regulated, and is connected with fuel feed supplied by a fuel pump via an inlet valve, which is biased in the closed position. The inlet valve is opened by a control membrane which delimits the control chamber. The control membrane, on that side thereof remote from the control chamber, delimits an equalizing chamber along with a closure cover fastened to the carburetor housing. The equalizing chamber is constructed as a pressure chamber which can be selectively connected via a reversing or change-over valve with either the crankcase housing of the internal combustion engine, or with the atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.