Bottle caps
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 16, 1991
Grant Date -
N/A
app pub date -
Mar 14, 1989
filing date -
Jul 14, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A bottle cap for use with moulded plastics bottles which have an integral flanged seal over the aperture of a threaded neck, a frangible membrane joining the seal to the neck, the cap having a complementary screw-thread to that of the neck and at least two inwardly projecting resilient members located above the screw-thread such that, when the cap is screwed onto the bottle, the members pass around the seal with resilient deformation and, on unscrewing of the cap, engage the flanged seal in a lifting action, is characterized in that at least one, preferably 2, and ideally 6, of the inwardly projecting members comprises an upwardly directed blade, adapted to engage an underface of the seal so as to cut the seal, allowing its easier removal, a wall being preferably provided on the blade to reinforce the blade by acting against a side of the seal.
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