Primer for float-type carburetors
US4679534A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1986 |
| Grant date | Jul 14, 1987 |
| Priority date | — |
| Expiry date | Feb 25, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A primer for an internal combustion engine carburetor including a variable volume air chamber which is provided with a flexible resilient dome member. The dome member includes a protruding nipple including an aperture therein for admitting air into the chamber. Inside the chamber, a protrusion is provided including a sloping surface with an aperture therein. A passage connects the aperture in the sloping surface to the fuel supply bowl. When an operator abruptly depresses the flexible resilient dome member, a volume of air is abruptly displaced from the chamber through the passage and into the fuel supply bowl to force fuel from the bowl through a nozzle and into a fuel/air mixture passageway of the carburetor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.