Method and apparatus for injecting plants

Claim 1

A NON-REFILLABLE, SINGLE-DOSAGE TREATMENT DEVICE FOR INJECTING A LIQUID INTO A STEM OF A PLANT, COMPRISING: A SEALED HOLLOW CONTAINER HAVING A DISCHARGE PASSAGE EXTENDING THROUGH THE CONTAINER WALL; A MEASURED QUNATITY OF A LIQUID WITHIN THE CONTAINER TO BE ADMINISTERED TO THE PLANT; A DISPLACEABLE PLUG SLIDABLY RECEIVED IN THE DISCHARGE PASSAGE CLOSING THE PASSAGE AT ITS INNER END TO FLUID FLOW, SAID PLUG BEING SHORTER THAN THE PASSAGE AND DISPLACEABLE INWARDLY ONLY OF THE PASSAGE TO OPEN THE PASSAGE; A BODY OF GASEOUS PROPELLANT IN THE CONTAINER ABVOE AND IN DIRECT CONTACT WITH THE LIQUID THEREIN AT A PRESSURE ABOVE ATMOSPHERIC; AND A CONTAINER UNSEALING AND LIQUID INJECTING MEMBER, SAID MEMBER COMPRISING A RIGID TUBULAR MEMBER CONTINUOUSLY OPEN THROUGHOUT ITS FULL LENGTH AND SHARPENED AT ONE END TO PENETRATE A PLANT STEM, THE OTHER END OF THE TUBULAR MEMBER HAVING AN EXTERNAL DIAMETER SIZED TO BE RECEIVED SNUGLY WITH A FLUID-TIGHT FIT IN THE CONTAINER INWARDLY FROM THE PASSAGE INTO THE PLACE SAID PLUG INWARDLY FROM THE PASSAGE INTO THE CONTAINER TO OPEN THE PASSAGE TO FREE DISCHARGE OF SAID LIQUID THROUGH SAID TUBULAR MEMBER INTO A PLANT, THE PASSAGE BEING LONG ENOUGH TO ESTABLISH A FLUID-TIGHT FIT WITH THE PASSAGE WALL BEFORE THE PLUG IS OUT OF THE PASSAGE.