Apparatus for electrically disintegrating hypodermic needle

Details Apparatus for electrically disintegrating hypodermic needle Apparatus for electrically disintegrating hypodermic needle

2006-04-25

2006-04-25

Evans, Geoffrey S. (Department: 1725)

Electric heating

Metal heating

Cutting or disintegrating

Reexamination Certificate

active

07034243

ABSTRACT:
A device used to disable hypodermic needles uses a power supply (10) and two electrodes (12,14) in a housing. One electrode is placed over the other electrode and slants down towards the other. A collar is used to ensure that when the hypodermic needle is inserted in the device, it will hit the electrodes at the proper point. When the hypodermic needle contacts both electrodes, electricity will flow from the power supply through the lower electrode and up the needle to the top electrode. The electrical resistance of the needle is very high so that it quickly heats up to cause disintegration of the needle.

REFERENCES:
patent: 4628169 (1986-12-01), Ch'ing-Lung
patent: 5091621 (1992-02-01), Butler
patent: 5147304 (1992-09-01), Fladung
patent: 2719991 (1995-11-01), None
patent: 2770407 (1999-05-01), None
patent: 2297230 (1996-07-01), None
patent: 2000-262617 (2000-09-01), None

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