Patent ID: 6460336
Filing Date: 2002-10-08
Classification: B29C,B60T

Abstract:
An injection molded master cylinder comprising: a housing having a wall surrounding a bore in which a piston is slidable to pressurize fluid ahead of a main seal on the piston for the supply of pressurized fluid to an outlet, the wall having two inlet openings extending therethrough between the bore and the exterior of the wall, a first opening of the two, for recuperation of fluid from an associated remote reservoir to that part of the bore ahead of the main piston seal which the piston is in a retracted position and a second opening of the two, placing that portion of the bore between the main piston seal and a second piston seal behind the main seal in permanent communication with the reservoir, and an elongated inlet pipe having an inner end integrally molded onto the exterior of the wall of the housing at a location surrounding the two inlet openings, and having an outer end for direct connection with a conduit, which in turn, is connected to the remote reservoir, the inlet pipe having an elongated smooth surface internal passage which is molded simultaneously with the first and second opening by a single molding core.