Device for discharging viscous fluid

Claim 1

IN A DEVICE FOR DISCHARGING HIGHLY VISCOUS FLUID SUCH AS A THICK OIL FROM A CAN, SAID CAN HAVING (A) A TUBULAR BODY CLOSED AT ONE END BY (B) A CAN END CLOSURE, AND AT ITS OPPOSITE END BY (C) A PISTON-LIKE END CLOSURE WITH A SKIRT WITHIN THE TUBULAR BODY AND (D) FLEXIBLE DOMESHAPED PISTON HEAD JOINED TO SAID SKIRT, THE IMPROVEMENT COMPRISING, (1) A GUIDWAY SHAPED TO RECEIVE AND SUPPORT SID TUBULAR BODY (A) OF SAID CAN, (2) A FIXED END PLATE AT ONE END OF SAID GUIDEWAY (1), (3) A SPOUT MOUNTED IN SAID FIXED END PLATE (2) HAVING A DISCHARGE END ON ONE SIDE OF SAID END PLATE, (4) A PIERCING POINT ON SID SPOUT (3) PROJECTING FROM THE OPPOSITE SIDE OF SAID END PLATE (2) BESIDE SAID GUIDEWAY (1) AND PROVIDED WITH A CUTTING EDGE DISPOSED IN A DIAGONAL PLANE INCLINED AWAY FROM SAID GUIDEWAY (1), (5) A RESILIENT SEALING RING AROUND SAID PIERCING POINT (4) AND HELD AGAINST MOVEMENT AWAY FROM SAID PIERCING POINT BY LSAID END PLATE (2), (6) A MOVABLE PART ON SAID DEVICE OPERABLY TO MOVE ALONG SAID GUIDEWAY (1) TOWARD AND AWAY FROM SAID PIERCING POINT (4), (7) MEANS ON SAID DEVICE, UNDER THE CONTROL OF AN OPERATOR FOR MOVING SAID MOVABLE PART (6) AWAY FROM SAID PIERCING POINT (4) SO THAT A CAN BODY (A) MAY BE PLACED ON SAID GUIDEWAY (1) WITH ITS METAL END CLOSURE (B) ADJACENT SAID PIERCING POINT (4), AND (8) MEANS TO MOVE SAID MOVABLE PART (6) TOWARD SAID PIERCING POINT (4) TO POUNCTURE SAID END CLOSURE (B) AND COMPRESS SAID RESILENT SEALING RING (5), AND THEN TO MOVE SAID PISTON-LIKE END CLOSURE (C) AGAINST SAID END CLOSURE (B) TO DISCHARGE THE CONTENTS OF SAID CAN FROM SAID SPOUT (3), WHEREBY THE FLEXIBLE DOME-SHAPED PISTON HEAD OF SID FLEXIBLE END CLOSURE (C) IS FLATTENED ON SAID END CLOUSRE (B) AND FORMED INTO A POCKET AROUND SAID PIERCING POINT (4) DURING THE DISCHARGE OF THE CONTENTS FROM SAID CAN AND ON SUBSEQUENT ACTUATION JOF SAID MEANS (7) THE CAN IS EJECTED FROM SAID PIERCING POINT (4) BY EXPANSION OF SAID SEALING RING (5).