Atomizer pump

Claim 1

A DEVICE FOR DISPENSING LIQUID IN THE FORM OF A FINELY ATOMIZED MIST COMPRISING AN ELONGATE HOLLOW BARREL PORTION HAVING A LOWER END IN COMMUNICATION WITH A RESERVOIR OF SUCH LIQUID AND AN UPPER END OPEN TO ATMOSPHERE, A FLUID CHAMBER INTERMEDIATE SAID UPPER AND LOWER ENDS, A PISTON WITHIN SAID FLUID CHAMBER, SAID PISTON HAVING AN UPPER LAND, A LOWER LAND AND A RADIAL FLUID PASSAGE BETWEEN SAID LANDS, A PLUNGER EXTENDING FROM THE UPPER SURFACE OF SID PISTON TO A POINT ABOVE SAID UPPER END OF SAID BARREL PORTION TO PROVIDE MEANS FOR DEPRESSING SAID PISTON, SAID PLUNGER CONTAINING A FLUID PASSAGE CONNECTING SAID RADIAL FLUID PASSAGE IN SAID PISTON TO A DISCHARGE NOZZLE ON SAID PLUNGER ABOVE SAID BARREL PORTION, A FIRST STOP MEANS DEFINING THE UPPER POSITION OF SAID PISTON, A SECOND STOP MEANS DEFINING THE LOWER POSITION OF SAID PISTON, RESILIENT MEANS URGING SAID PISTON UPWARDLY AGAINST SAID FIRST STOP MEANS, A FLUID BYPASS IN SAID FLUID CHAMBER HAVING ITS LOWER END IN VALVED COMMUNICATION WITH SAID LIQUID RESERVOIR AND ITS UPPER END TERMINATING BELOW SAID LOWER LAND OF SAID PISTON WHEN SAID PISTON IS IN ITS UPPER POSITION SUCH THAT NO FLUID CAN PASS SAID PISTON WHEN SAID PISTON IS IN AN UPPER POSITION, SAID FLUID BYPASS COMMUNICATING WITH SAID RADIAL FLUID PASSAGE IN SAID PISTON WHEN SAID PISTON IS DEPRESSED TO CAUSE SUCH FLUID TO FLOW UPWARDLY THROUGH SAID PLUNGER TO SAID DISCHARGE NOZZLE, AND A VALVE BETWEEN SAID LOWER END OF SAID FLUID BYPASS AND SAID LIQUID RESERVOIR PREVENTING RETURN FLOW OF LIQUID FROM SAID FLUID CHAMBER TO SAID RESERVOIR BUT ALLOWING FORWARD FLOW PAST SAID VALVE.

Claim 2

A DEVICE FOR DISPENSING LIQUID IN THE FORM OF A FINELY ATOMIZED MIST COMPRISING AN ELONGATE HOLLOW BARREL PORTION HAVING A LOWER END IN COMMUNICATION WITH A RESERVOIR OF SUCH LIQUID AND AN UPPER END OPEN TO ATMOSPHERE, A FLUID CHAMBER INTERMEDIATE SAID UPPER AND LOWER ENDS, A PISTON WITHIN SAID FLUID CHAMBER, SAID PISTON HAVING AN UPPER LAND, A LOWER LAND AND A RADIAL FLUID PASSAGE BETWEEN SAID LANDS, A PLUNGER EXTENDING FROM THE UPPER SURFACE OF SID PISTON TO A POINT ABOVE SAID UPPER END OF SAID BARREL PORTION TO PROVIDE MEANS FOR DEPRESSING SAID PISTON, SAID PLUNGER CONTAINING A FLUID PASSAGE CONNECTING SAID RADIAL FLUID PASSAGE IN SAID PISTON TO A DISCHARGE NOZZLE ON SAID PLUNGER ABOVE SAID BARREL PORTION, A FIRST STOP MEANS DEFINING THE UPPER POSITION OF SAID PISTON, A SECOND STOP MEANS DEFINING THE LOWER POSITION OF SAID PISTON, RESILIENT MEANS URGING SAID PISTON UPWARDLY AGAINST SAID FIRST STOP MEANS, A FLUID BYPASS IN SAID FLUID CHAMBER HAVING ITS LOWER END IN VALVED COMMUNICATION WITH SAID LIQUID RESERVOIR AND ITS UPPER END TERMINATING BELOW SAID LOWER LAND OF SAID PISTON WHEN SAID PISTON IS IN ITS UPPER POSITION SUCH THAT NO FLUID CAN PASS SAID PISTON WHEN SAID PISTON IS IN AN UPPER POSITION, SAID FLUID BYPASS COMMUNICATING WITH SAID RADIAL FLUID PASSAGE IN SAID PISTON WHEN SAID PISTON IS DEPRESSED TO CAUSE SUCH FLUID TO FLOW UPWARDLY THROUGH SAID PLUNGER TO SAID DISCHARGE NOZZLE, AND A VALVE BETWEEN SAID LOWER END OF SAID FLUID BYPASS AND SAID LIQUID RESERVOIR PREVENTING RETURN FLOW OF LIQUID FROM SAID FLUID CHAMBER TO SAID RESERVOIR BUT ALLOWING FORWARD FLOW PAST SAID VALVE.