Molded hypodermic plunger with integral shaft and elastomeric he

Details Molded hypodermic plunger with integral shaft and elastomeric he Molded hypodermic plunger with integral shaft and elastomeric he

1978-05-24

1980-05-06

Hoag, W. E.

Surgery

Respiratory method or device

Ozone or ion generation

222386, 264255, 264259, 264328, B29D 900, B29F 100, A61F 5315

Patent

active

042012090

ABSTRACT:
Articles having portions of materials with different properties are integrally formed by injection of two different thermoplastic materials simultaneously through separate gates into the same mold wherein the materials fuse or bond together. A plunger for a syringe formed by the process has a rigid shaft and an elastomeric head.

REFERENCES:
patent: 3051994 (1962-09-01), Carozzo
patent: 3237815 (1966-03-01), Ogle
patent: 3291128 (1966-12-01), O'Neil
patent: 3348546 (1967-10-01), Roberts et al.
patent: 3524795 (1970-08-01), Petersen
patent: 3719735 (1973-03-01), Valyi
patent: 3822107 (1974-07-01), Wogerer
patent: 3966866 (1976-06-01), Ballman et al.
patent: 4035534 (1977-07-01), Nyberg
patent: 4082877 (1978-04-01), Shadle
patent: 4116914 (1978-09-01), Coran et al.

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