Accelerator Pump Cap for a Motorcycle Carburetor
OwnerEdward Brazinainventor
Life of this patent
Estimating the term…
Abstract
An accelerator pump cap for an accelerator pump assembly of a carburetor, such as a motorcycle or ATV carburetor, has a cap body with a base and a sidewall projecting from the base defining a fuel chamber within the cap body beneath an open top. Preferably, one or more ports extend through the sidewall closely-spaced to the open top of the cap body to ensure that any vapor or gas residing within the fuel chamber is flushed out of the fuel chamber through the port or ports when the accelerator pump assembly is actuated to supply fuel to the carburetor. Accelerator pump assemblies and the use of a separate collector ring within an accelerator pump cap are also provided.
Claims20
An accelerator pump assembly for a carburetor, comprising:
- an accelerator pump cap having a recess defined by a base, a sidewall and an upper end of said cap;
- a diaphragm mounted on said upper end of said cap and being deflectable within said recess;
- and
- a fuel chamber located within said cap and defined by said base, sidewall and diaphragm;
- said cap having at least one port adjacent said upper end of said cap to ensure that any vapor, including fuel vapor, air and water vapor, within said chamber is flushed through said at least one port when said diaphragm is deflected into said cap.
An accelerator pump cap for an accelerator pump assembly of a carburetor, comprising:
- a cap body having a base and a sidewall projecting from said base defining a fuel chamber within said cap body beneath an open top;
- and
- at least one port extending through said sidewall closely-spaced to said open top of said cap body to ensure that any gas or vapor within said fuel chamber is flushed out of said fuel chamber and through said at least one port each time said accelerator pump assembly is actuated.
For use with a carburetor having a fuel bowl with a wall forming a cavity with at least one port and a diaphragm moveable in the fuel bowl, a collector ring adapted to be installed in the fuel bowl to form with the wall of the fuel bowl a chamber for receiving liquid fuel, said collector ring having at least one aperture providing communication between the chamber and the cavity, said aperture being located closely adjacent the diaphragm when said collector ring is operatively installed in the fuel bowl, whereby displacement of the diaphragm into the fuel bowl causes unwanted gas to be displaced from the cavity and through the at least one port.
Dependencies are inferred from the claim text.