Means for operating a fire extinguisher

Claim 1

A FIRE EXTINGUISHER DISCHARGE APPARATUS COMPRISING: A CONTAINER HAVING FIRE EXTINGUISHER AGENT UNDER PRESSURE, A HEAD HAVING A BORE THEREIN AT ONE END OF SAID CONTAINER A DISCHARGE PASSAGE IN SAID HEAD, A HOSE REMOVABLY CONNECTED TO SAID DISCHARGE PASSAGE, SEALING MEANS IN SAID BORE, AN AXIALLY MOVABLE PLUNGER ATTACHED TO SAID SEALING MEANS, A CAM LOCATED ADJACENT ONE END OF SAID PLUNGER AND HAVING A FIRST WORKING SURFACE AND A SECOND WORKING SURFACE, A THIRD SURFACE ON SAID CAM WHICH ABRUPTLY DEPARTS FROM SAID FIRST SURFACE AND MERGES WITH SAID SECOND SURFACE, A LEVER CONNECTED TO SAID CAM FOR ROTATING SAID CAM WHEREBY SAID SEALING MEANS IS MOVED TO AN OPEN POSITION BY SAID FIRST WORKING SURFACE ENGAGING AND MOVING SAID PLUNGER AND SAID SEALING MEANS CAN THEN BE MOVED BY PRESSURE IN THE CONTAINER INTO A DESIRED OPEN POSITION WHICH POSITION SAID ONE END OF SAID PLUNGER ENGAGES SAID THRID SURFACE, SAID LEVER BEING LOCATED WITH RESPECT TO SAID HOSE SO THAT A PORTION OF SAID LEVER IS ADAPTED TO ENGAGE SAID HOSE AFTER SAID SEALING MEANS HAS BEEN MOVED TO THE DESIRED OPEN POSITION TO THEREBY PREVENT MOVEMENT OF SAID CAM WITH RESPECT TO SAID PLUNGER, SAID SECOND SURFACE BEING ADAPTED TO ENGAGE SAID PLUNGER UPON ROTATION OF SAID ARM TO DISENGAGE SAID PLUNGER AND SAID THIRD WORKING SURFACE WHEREBY SAID CAM CAN BE RETURNED TO ITS ORIGINAL POSITION.