Patent ID: 6318078
Filing Date: 2001-11-20
Classification: B62D

Abstract:
A fluid controller operable to control the flow of fluid from a source of pressurized fluid to a fluid pressure operated device; said controller including housing means defining an inlet port for connection to said source of fluid, and first and second control fluid ports for connection to said fluid pressure operated device; controller valve means disposed in said housing means and defining a neutral position, and at least one operating position (FIG. 1) in which said housing means and said controller valve means cooperate to define a main fluid path providing fluid communication from said inlet port to said first control fluid port and including a fluid actuated means for imparting follow-up movement to said controller valve means generally proportional to the volume of fluid flow through said main fluid path when said controller valve means is in said operating position, said fluid actuated means including a rotatable measuring member providing said follow-up movement; characterized by:(a) selector valve means disposed in series flow relationship in said main fluid path, between said fluid inlet port and said fluid actuated means and operable, in a first position (""R"" in FIG. 1) to permit normal flow through said main fluid path; and(b) said selector valve means being operable, in a second position (""W"" in FIG. 1 and FIGS. 2 and 3) to block fluid flow through said fluid actuated means while bypassing said fluid actuated means, thus permitting flow through said main fluid path while preventing said follow-up movement to said controller valve means.