Patent ID: 6581901
Filing Date: 2003-06-24
Classification: F16K

Abstract:
An automatic vacuum airflow shut-off system for use with an air powered tool, such system comprising:a first hose portion in communication with a vacuum coupler portion of said tool; a second hose portion in fluid communication with the first hose portion and in fluid communication with an exhaust port of said tool; a ram disposed in said first hose portion, wherein said ram is moveable between a first position and second position; a biasing member for maintaining said ram in said first position; a valve disposed in said second hose portion, wherein said valve is positionable between an open position and a closed position in response to movement of said ram between said second position and said first position, respectively; and a member operatively coupling said ram and said valve, wherein said ram operatively moves said member to position said valve in said open position in response to an exhaust airflow from said exhaust port, thereby permitting a vacuum airflow to be applied to said vacuum coupler of said tool, and wherein an interruption of said exhaust airflow enables said biasing member to urge said ram into said first position, thereby moving said valve into said closed position and interrupting said vacuum airflow drawn through said vacuum coupler of said tool.