Controller for fluid pressure operated devices providing high pressure to an auxiliary device

Claim 1

A controller including a housing having an inlet for receiving a system fluid flow and an outlet, a pair of control fluid ports adapted for connection to a primary fluid pressure operated device and an auxiliary fluid port adapted for connection to an auxiliary fluid pressure operated device, said controller comprising: a. valve means rotatably disposed within said housing and defining a neutral position, an operating position, and a central plane oriented generally perpendicular to the axis of rotation of said valve means; b. a fluid meter associated with said housing and including a movable member operable to measure the volume of fluid passing through said fluid meter; c. said valve means cooperating with said housing to define first and second supply passages in continuous open communication with said inlet and a first flow path including said inlet, said first and second supply passages, said fluid meter, one of said control fluid ports, the other of said control fluid ports, and said outlet when said valve means is in said operating position; d. said valve means cooperating with said housing to define a second flow path communicating between said inlet and said auxiliary fluid port when said valve means is in said neutral position, said valve means defining first and second auxiliary passages communicating between said auxiliary fluid port and said first and second supply passages, respectively, when said valve means is in said neutral position, said first and second supply passages and said first and second auxiliary passages being oppositely and approximately equally disposed about said central plane; and e. said second flow path being capable of communicating substantially all of said system fluid flow and said system fluid flow being progressively redirected from said second flow path to said first flow path as said valve means shifts from said neutral position toward said operating position.