Lid for beverage can excellent in pressure resistant strength

Details Lid for beverage can excellent in pressure resistant strength Lid for beverage can excellent in pressure resistant strength

2011-01-25

2011-01-25

Stashick, Anthony (Department: 3781)

Receptacles

End wall structure

Joint or seam between sidewall and end wall

C220S213000, C220S610000, C220S623000

Reexamination Certificate

active

07874450

ABSTRACT:
A lid for a beverage can possessing excellent characteristics in pressure resistant strength in which a predetermined pressure requirement is ensured by a simple gauging down. An annular groove portion of the can lid is formed to have such cross-sectional shapes that a panel wall portion is connected to a chuck wall radius portion so that a tangential line at a second contact point is vertical with respect to an axial direction of a center panel portion, while a chuck wall portion is connected to the chuck wall radius portion so that a tangential line at a first contact point is inclined to the radially inner side, and a curved portion with a radius R1is provided at a height h1from the lowest point of the chuck wall radius portion and bent to the radially outer side.

REFERENCES:
patent: 7500376 (2009-03-01), Bathurst et al.
patent: 2006/0071005 (2006-04-01), Bulso
patent: 2007/0007294 (2007-01-01), Jentzsch et al.
patent: 2005-119747 (2005-05-01), None
patent: 2006-69603 (2006-03-01), None
Notification of Copies of Translation of the International Preliminary Report on Patentability (Forms PCT/IB/338) of International Application No. PCT/JP2008/058813 mailed Jan. 21, 2010 with forms PCT/IB/373 and PCT/ISA/237.
International Search Report of PCT/JP2008/058813, Mailing Date of Jul. 22, 2008.

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