Nova Patents
US2420102A

Syringe extension

Abstract

This record has no abstract on file.

US2420102A, drawing sheet 1
Sheet 1 of 2

Term

Term ended

Expired 27 July 1965, 61.2 years ago.

  1. Priority and filed
  2. Granted
  3. Expired
  4. Today

2 claims: 2 independent, 0 dependent

  1. 1
    Having now described my invention that which I claim as new and desire to procure by Letters Patent is:1. A syringe and operating extension therefor 15 comprising spaced axially aligned upper and lower tubes, oppositely disposed parallel rods formed integrally with the adjacent ends of said tubes providing a seat at the upper end of said lower tube, a syringe body formed with an annular 20 flange adapted to be received in said lower tube with its flange on said seat, a piston in said syringe having a head on its outer end, an operating rod slidably mounted through said upper tube, and fingers on the lower end of said rod 25 engageable with the head on said syringe piston.
  2. 2
    A syringe and operating extension therefor comprising spaced axially aligned upper and lower tubes, oppositely disposed parallel arcuate rods formed integrally with the adjacent ends of said 30 tubes providing a seat at the upper end of said lower tube, a syringe body formed with an annular flange adapted to be received in said lower tube with its flange on said seat, a piston in said syringe having a head on its outer end, an 35 apertured guide between the upper ends of said rods, an operating rod slidably mounted through said upper tube and said guide, fingers on the lower end of said rod engageable with the head on said syringe piston, finger engaging rings 40 mounted on the upper end of said upper tube, a cooperating finger engaging ring on the outer end of said operating rod, and a resilient locking finger supported on said lower tube adapted to overlie and contact the upper surface of the 45 annular flange on the syringe body when the same is in operative position within said lower tube. EDWARD L. SHUFORD. REFERENCES CITED 50 The following references are of record in the file of this patent:UNITED STATES PATENTS Number Name Date 55 1,725,177 Bre Miller__________Aug. 20, 1929 1,591,761 Haines_____________July 6, 1926 1,993,630 Smith______________Mar. 5, 1935 1,144,343 Benmosche et al. — June 29, 1915 OTHER REFERENCES “Standard Surgical Instruments,” 22nd edition, Kny-Scheerer Corp., New York, pg. 5074. (Copy in Div. 55.)