Apparatus comprising a device for blending and applying resins to a surface with solvent cleaning means

Claim 1

VALVE APPARATUS FOR METERING AND BLENDING TWO OR MORE LIQUID COMPONENTS OF A THERMO-SETTING RESIN SYSTEM, SAID APPARATUS COMPRISING A VALVE HOUSING STRUCTURE HAVING A MIXING CHAMBER THEREWITH AND HAVING AN OUTLET COMMUNICATING WITH SAID MIXING CHAMBER, SAID HOUSING STRUCTURE HAVING A PLURALITY OF INLET PORTS COMMUNICATING WITH SAID MIXING CHAMBER, A SHIFTABLE VALVE ELEMENT FORMED OF COMPRESSIBLE ELASTIC MATERIAL POSITIONED WITHIN SAID MIXING CHAMBER AND EXTENSIBLY AND RETRACTABLY SHIFTABLE RELATIVE THERETO TO OPEN AND CLOSE SAID INLET PORTS, SAID VALVE ELEMENT BEING OF A CROSS-SECTIONAL SIZE GREATER THAN THE CROSS-SECTIONAL SIZE OF THE MIXING CHAMBER WHEREBY TO SEALINGLY CLOSE SAID INLET PORTS WHEN EXTENDED INTO SAID MIXING CHAMBER AND RETRACTABLE TO OPEN SAID INLET PORTS, MEANS FOR SHIFTING SAID VALVE ELEMENT, AND MEANS FOR FLUSHING AND REMOVING RESIDUAL TRACES OF THE THERMOSETTING RESIN FROM THE MIXING CHAMBER AT THE END OF THE BLENDING OR METERING OPERATION, SAID MEANS FOR FLUSING COMPRISING A DISCHARGE PASSAGE COMMUNICATING WITH SAID MIXING CHAMBER AND A VALVE MECHANISM DISPOSED INFLOW CONTROL RELATIONSHIP WITH RESPECT TO SAID DISCHARGE PASSAGE MOVABLE BETWEEN PASSAGE OPEN AND PASSAGE CLOSED POSITIONS, MEANS RESILIENTLY BIASING SAID VALVE MECHANISM TO PASSAGE INTO POSITION, AND MEANS FOR FLOWING SOLVENT UNDER PRESSURE INTO SAID PASSAGE, MEANS RESPONSIVE TO THE PRESSURE OF SAID SOLVENT IN SAID PASSAGE EFFECTIVE AGAINST SAID RESILIENT BIAS MEANS TO MOVE SAID VALVE MECHANISM TO PASSAGE OPEN POSITION.