Hypodermic syringe assembly
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 26, 1989
Grant Date -
N/A
app pub date -
May 5, 1988
filing date -
May 5, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A hypodermic syringe assembly includes an elongated container and a cup shape molded piston longitudinal movable in the container. The container has a sidewall, a needle receiving end, and a piston receiving end which terminates in a rim. The piston has an open rear end with at least three equally spaced integral hinged tabs therearound. The piston has a first position partially inserted at the container rear where the tabs extend radially outward from the container adjacent its rear end. The piston in this position can receive a disc shaped plunger head. The piston has a second position fully inserted in the container where the tabs are rotated about their hinges and extend radially inward within the container. In this position the piston tabs hold a disc shaped plunger head within the piston. The piston has a third position partially extended out of the rim of the dispensing container. In this position the tabs are rotated about the hinges and extend radially outward sufficient to permit the plunger head to withdraw from the piston. The sidewall of the dispensing container holds the tabs in a radially inward position in all fully inserted longitudinal positions of the piston.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully