Method and apparatus for assembling syringes

• US 3,270,483 A
• Filed: 09/20/1963
• Issued: 09/06/1966
• Est. Priority Date: 09/20/1963
• Status: Expired due to Term

• Current Assignee: Jack D. Vail Jr, Loyd L. Smoyer
• Original Assignee: Jack D. Vail Jr, Loyd L. Smoyer
• Inventors: Smoyer, Loyd L., Vail, Jack D. Jr.
• Application Number:
  US04/310,361
• Time in Patent Office: 1,082 Days
• US Class Current: 53/486
• CPC Class Codes: A61M 5/00 Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests vaccination appliances for veterinary use A61D1/025 ; tube connectors, tube couplings, valves or branch units specially adapted for medical use A61M39/00; containers specially adapted for medical or pharmaceutical purposes A61J1/00; combinations of vial and syringe for mixing or transferring their contents A61J1/20; holders for containers for collecting, storing or administering blood or medical fluids A61J1/16
• CPC Class Codes: Y10T 29/4984 Retaining clearance for motion between assembled parts
• CPC Class Codes: Y10T 29/49945 by driven force fit
• CPC Class Codes: Y10T 29/53339 Hypodermic syringe

Claims

1. A METHOD OF INSERTING PLUNGERS INTO SYRINGES HAVING A ROUND RESILIENT BARREL AND BEING PARTIALLY FILLED WITH A LIQUID WHICH COMPRISES SQUEEZING THE BARREL OF THE SYRINGE AT A POINT ABOVE THE LEVEL OF SAID LIQUID WHEREBY THE SHAPE OF THE BARREL IS DEFORMED FROM ITS ROUND TO AN OBLONG SHAPE WHILE SIMULTANEOUSLY INSERTING THE PLUNGER INTO THE BARREL OF SAID SYRINGE, THE AIR IN THE BARREL OF SAID SYRINGE BEING ALLOWED TO ESCAPE THROUGH THE PASSAGE CREATED BY SAID DEFORMATION OF SHAPE.

3. APPARATUS FOR INSERTING PLUNGERS INTO RESILIENT SYRINGES WHICH COMPRISES A HOLDER IN WHICH THE LOWER PART OF THE SYRINGE BARREL IS INSERTED, MEANS FOR BRINGING PRESSURE AGAINST THE OUTER SURFACE OF THE BARREL OF THE SYRINGE IN SAID HOLDER AT A POINT ABOVE THE LEVEL OF A LIQUID IN SAID SYRINGE SAID PRESSURE BEING APPLIED AT RIGHT ANGLES TO THE VERTICAL AXIS OF THE BARREL OF THE SYRINGE, MEANS TO SUPPORT THE OPPOSITE SIDE OF THE SYRINGE AT A POINT OPPOSITE THE SIDE OF THE SYRINGE AT WHICH PRESSURE IS