US 4,325,513 A · Gun for dispensing a plural component system

a housing including a first component receiving means, a second component receiving means and a gas receiving means, said first component receiving means connectable to a pressurized source of a first component of said plural component system, said second component receiving means connectable to a pressurized source of a second component of said plural component system and said gas receiving means connectable to a source of pressurized gas;

a first component feed port means connected to said first component receiving means and receiving a pressurized supply of said first component of said plural component system from said first component receiving means;

a second component feed port means connected to said second component receiving means and receiving a pressurized supply of said second component of said plural component system from said second component receiving means;

a first valve means located in said first component feed port means;

a second valve means located in said second component feed port means;

a valve carrier means movably located in said housing;

said first valve means and said second valve means operatively connected to said valve carrier means and movable within said first and said second component feed port means respectively in response to movement of said valve carrier means;

a gas passage means connected to said gas receiving means and receiving a supply of pressurized gas from said gas receiving means, said gas passage means including a gas valve means, said gas valve means operatively connected to said valve carrier means and moving in response to movement of said valve carrier means;

a static mixing chamber means attaching to said housing and including a mixing chamber, a discharge outlet connecting to said mixing chamber, a first component inlet means connecting to said mixing chamber, a second component inlet means connecting to said mixing chamber and a gas inlet means connecting to said mixing chamber, said gas inlet means operatively connected to said gas passage means, said first component inlet means operatively connected to said first component feed port means and said second component inlet means operatively connected to said second component feed port means;

trigger means movably mounted on said housing, said valve carrier means operatively associated with said trigger means and moving between a first position and a second position in response to movement of said trigger means;

said first and said second valve means prohibiting the flow of said first and said second component from said first and said second component feed port means respectively into said first and said second inlet means respectively and said gas valve means allowing flow of said pressurized gas from said gas passage means into said mixing chamber through said gas inlet means when said valve carrier means is in said first position and said first and said second valve means allowing flow of said first and said second components from said first and said second component feed port means into said first and said second component inlet means respectively and into said mixing chamber and controlling the flow of said pressurized gas from said gas passage means into said gas inlet means when said valve carrier means is in said second position;

said first and said second components flowing into said mixing chamber and being discharged out of said discharge outlet when said valve carrier means is in said second position and said pressurized gas flowing into said mixing chamber and discharging the contents of said mixing chamber out of said discharge outlet when said valve carrier means is in said first position;

said first valve means includes a first valve seat located in said first component feed port means and a first valve slidably located in said first component feed port means and movable between a position wherein said first valve seals against said first valve seat and a position wherein said first valve is not sealed in said first valve seat;

said first component inlet means including a first passageway, said first passageway located between said mixing chamber and said first valve seat;

said second valve means includes a second valve seat located in said second component feed port means and a second valve slidably located in said second component feed port means and movable between a position wherein said second valve seals against said second valve seat and a position wherein said second valve is not seated in said second valve seat;

said second component inlet means including a second passageway, said second passageway located between said mixing chamber and said second valve seat;

said first and said second valves attaching to said valve carrier means and movable in response to movement of said valve carrier means;

said first component feed port means includes a first closed chamber located within said housing, said first passageway connecting to said first chamber, said first valve seat comprising an annular valve seat located around one end of said first passageway;

said first closed chamber including a valve stem opening, a valve stem sealing means located in said valve stem opening, said first valve including a valve stem slidably passing through said first valve stem sealing means, said first valve stem attaching to said valve carrier means external said first closed chamber;

said second component feed port means including a second closed chamber located within said housing, said second passageway connecting to said second chamber, said second valve seat comprising an annular valve seat located around one end of said second passageway;

said second closed chamber including a second valve stem opening, a second valve stem sealing means located in said second valve opening, said second valve including a second valve stem slidably passing through said second valve stem sealing means, said second valve stem attaching to said second valve carrier means external said second closed chamber;

said valve carrier means includes a carrier member;

said housing including a carrier member receiving chamber means, at least a portion of said carrier member slidably moving in said carrier member receiving chamber means;

said trigger means comprising a trigger pivotally mounted to said housing, said trigger operatively contacting said carrier member to slide said carrier member in said carrier member receiving chamber means between said first position and said second position;

said carrier member includes an elongated shaft, an annular flange integrally formed on said elongated shaft, an annular piston integrally formed on said elongated shaft and spaced from said annular flange axially along said elongated shaft;

said first and said second valve stems fixedly attaching to said annular flange;

said carrier member receiving chamber means includes a cylindrical chamber sized to receive said annular piston.

Gun for dispensing a plural component system

Life of this patent

Gun for dispensing a plural component system

Life of this patent

Abstract

Claims11