Disposable hypodermic syringe

Claim 1

A DISPOSABLE HYPODERMIC SYRINGE CONSTRUCTION CONSISTING OF A GENERALLY CYLINDRICAL CASE SURROUNDING A TUBULAR CARTRIDGE, THE CARTRIDGE HAVING A TUBULAR BARREL, A PLUNGER PISTON RECIPROCALLY MOUNTED IN THE BARREL, CLOSING ONE END THEREOF, AND ELASTIC SEALING MEANS BEARING AGAINST THE RIM OF THE BARREL AT THE OTHER END THEREOF, MEANS FOR ATTACHMENT OF A PLUNGER SHAFT TO THE PLUNGER PISTON AND A PLUNGER SHAFT WHICH IS ADAPTED TO ATTACHMENT TO THE PLUNGER PISTON ATTACHED TO SAID SYRINGE, THE CASE CONSISTING OF (A) A SLEEVE, HAVING TWO GENERALLY CYLINDRICAL END PORTIONS CONNECTED BY TWO OR MORE LONGITUDINAL STRAPS AND AN INTERNALLY DIRECTED ANNULAR WALL FORMING A BARRIER AT ONE END OF THE SLEEVE, THERE BEING A PASSAGE THROUGH THE BARRIER, AND (B) A GENERALLY CUPSHAPED CAP, HAVING A RESILIENT SKIRT, TELESCOPED WITH AND SNAP-FASTENED TO THE SLEEVE AT THE OTHER END THEREOF, THE SLEEVE AND THE CAP FORMING THE CASE AND ENCLOSING THE CARTRIDGE, THERE BEING A PASSAGE THROUGH THE BASE OF THE CAP AND TWO OR MORE LUGS PROJECTING LATERALLY FROM THE SKIRT OF THE CAP, THE FACE OF EACH LUG REMOTE FROM THE RIM OF THE SKIRT FORMING A SHOULDER, THE CAP BEING ATTACHED TO THE SLEEVE BY MEANS OF THE INTERLOCKING OF SUCH SHOULDERS WITH MATCHING BUT OPPOSITELY FACING SHOULDERS, FORMED BY SEGMENTS, LOCATED BETWEEN THE LONGITUDINAL STRAPS, OF THE INNER RIM OF THE CYLINDRICAL END PORTION OF THE SLEEVE ADJACENT THE CUP-SHAPED CAP, SAID ADJACENT END PORTION OF THE SLEEVE AND SAID SKIRT OF THE CAP BEING ADAPTED TO BE DEFLECTED SUFFICIENTLY IN RELATION TO EACH OTHER, WHEN TELESCOPED TOGETHER, TO PERMIT SAID LUGS TO SNAP PAST SAID END PORTION OF SAID SLEEVE AND INTERLOCK WITH THE SHOULDERS FORMED BY SAID SEGMENTS OF THE INNER RIM OF THE SLEEVE, MEANS FOR ATTACHMENT OF A HYPODERMIC NEEDLE AND FOR REMOVABLE ATTACHMENT OF A PROTECTIVE HOOD AT THE END OF THE SYRINGE ADJACENT THE SEALING MEANS OF THE CARTRIDGE, A PROTECTIVE HOOD REMOVABLY ATTACHED TO THE SYRINGE AND MEANS FOR GRIPPING THE SYRINGE PROJECTING LATERALLY OUTWARD FROM THE CASE.