The disclosure is of a disposable hypodermic syringe and the method of its manufacture. The syringe comprises a barrel, a piston-plunger slidably mounted in the barrel, a handle and shank connected to the piston-plunger, a needle hub welded to and closing one end of the barrel and supporting a hypodermic...http://www.google.com/patents/US4121588?utm_source=gb-gplus-sharePatent US4121588 - Disposable hypodermic syringe and method of manufacture
