Air filter apparatus for removing moisture and foreign matter from compressed air

Claim 1

AN AIR FILTER APPARATUS FOR REMOVING THE MOISTURE FROM COMPRESSED AIR COMPRISING IN COMBINATION: AN ENCLOSED CYLINDER HAVING A TOP WALL, A BOTTOM WALL, AND A SIDE WALL, SAID SIDE WALL HAVING AN INLET OPENING FORMED THEREIN ADJACENT THE TOP THEREOF AND AN OUTLET OPENING FORMED THEREIN ARCUATELY SPACED FROM SAID INLET OPENING, SAID BOTTOM WALL HAVING AN INVERTED FRUSTO-CONICAL INNER SURFACE WITH A DISCHARGE OPENING FORMED CENTRALLY THEREIN AT THE APEX THEREOF, BAFFLE MEANS MOUNTED WITHIN SAID CYLINDER AND INCLUDING A BARREL UNIT HAVING AN UPPER FRUSTO-CONICAL SURFACE AGAINST WHICH AIR INCOMING THROUGH SAID INLET OPENING IMPINGES, SAID BARREL UNIT HAVING AN OPENING FORMED IN SAID UPPER SURFACE FLUIDLY CONNECTED TO SAID OUTLET OPENING, SAID BARREL UNIT HAVING A CYLINDRICAL WALL CONCENTRIC WITH SAID CYLINDER SIDE WALL WHEREIN SAID INCOMING AIR SPIRALS DOWNWARDLY BETWEEN SAID CYLINDER SIDE WALL AND BARREL CYLINDRICAL WALL, SAID BARREL CYLINDRICAL WALL HAVING A PLURALITY OF ARCUATELY SPACED UPPER HOLES FORMED THEREIN THROUGH WHICH THE AIR FLOWS INTERNALLY OF SAID BARREL UNIT, SAID BARREL CYLINDRICAL WALL HAVING A PLURALITY OF ARCUATELY SPACED LOWER HOLES FORMED THEREIN THROUGH WHICH MOISTURE IS ADAPTED TO FLOW INTERNALLY OF SAID BARREL UNIT, SAID BAFFLE MEANS ALSO INCLUDING A BOTTOM BAFFLE UNIT SECURED TO THE BASE OF SAID BARREL CYLINDRICAL WALL, SAID BOTTOM BAFFLE UNIT HAVING A CHAMBER OPEN TO THE INTERIOR OF SAID BARREL UNIT AND FOR RECEIVING SAID MOISTURE, AND HAVING FURTHER AN OUTLET PORT FORMED IN THE BOTTOM THEREOF; A FIRST VALVE MEANS INCLUDING A CUP-SHAPED VALVE HAVING AN UPPER LEDGE DISPOSED AGAINST SAID BOTTOM BAFFLE UNIT, SAID FIRST VALVE HAVING A PASSAGE FORMED THEREIN, AND A FIRST SPRING MEANS COMPRESSED BETWEEN SAID BOTTOM BAFFLE UNIT AND SAID BOTTOM WALL AND BIASING SAID FIRST VALVE AGAINST SAID BOTTOM BAFFLE UNIT OBSTRUCTING THEREBY SAID PASSAGE. SAID FIRST VALVE MOVABLE AGAINST THE BIAS OF SAID SPRING MEANS, IN RESPONSE TO COMPRESSED AIR INTERNAL OF SAID BARREL UNIT, AND AWAY FROM SAID BOTTOM BAFFLE UNIT WHEREBY SAID PASSAGE IS UNOBSTRUCTED, SAID PASSAGE AND SAID DISCHARGE OPENING BEING IN CONSTANT FLUID COMMUNICATION WHEN SAID VALVE IS MOVED AWAY FROM SAID BOTTOM BAFFLE UNIT; AND