Patent ID: 6540212
Filing Date: 2003-04-01
Classification: F02M,Y10S,Y10T

Abstract:
A retaining assembly to maintain yieldingly the rotational settings of a low and a high speed needle valve of a carburetor comprising:a low speed needle valve having a rotatable elongated shank, a spring, and a head, the elongated shank engaged threadably to and projecting outward from the carburetor body, the spring disposed about the shank and axially compressibly between the carburetor body and the head, the head engaged with the shank, the head having an annular surface facing the carburetor body, the shank defined radially by a longitudinal outward surface and a longitudinal inward surface, the annular surface disposed radially outward from and perpendicular to the outward and inward surfaces; a high speed needle valve having a rotatable elongated shank, a spring, and a head, the elongated shank engaged threadably to and projecting outward from the carburetor body, the spring disposed about the shank and axially compressibly between the carburetor body and the head, the head engaged with the shank, the head having an annular surface facing the carburetor body, the shank defined radially by a longitudinal outward surface and a longitudinal inward surface, the annular surface disposed radially outward from and perpendicular to the outward and inward surfaces, the shank of the low speed needle valve being parallel to the shank of the high-speed needle valve, the inward surface of the low-speed needle valve shank facing the inward surface of the high-speed needle valve shank; a retainer engaged resiliently to the springs of the low and high-speed needle valves and thereby biasing laterally the low-speed needle valve shank and the high-speed needle valve shank; and two limiter caps engaged to the respective heads of the low and high-speed needle valves, wherein the limiter caps are engaged to the heads after the retainer is engaged to the springs of the low and high-speed needle valves.