Carol,

The Barnhart patented disk was designed to be destroyed upon opening ... 
read the specifications in their patent # 411368.

http://www.google.com/patents?id=2SFlAAAAEBAJ&pg=PA43&dq=ininventor:Barnhart&as_drrb_ap=q&as_minm_ap=1&as_miny_ap=2007&as_maxm_ap=1&as_maxy_ap=2007&as_drrb_is=b&as_minm_is=9&as_miny_is=1889&as_maxm_is=9&as_maxy_is=1889#PPA44,M1

~~~~~~~~~~~~~
"There is also an artificial aristocracy founded on wealth and birth, 
without either virtue or talents ... The artificial aristocracy is a 
mischievous ingredient in government, and provisions should be made to 
prevent its ascendancy."

- Thomas Jefferson (1743-1826)
----- Original Message ----- 
From: "Carol Serr" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, September 12, 2007 3:10 PM
Subject: Re: Weird disks - milk lids


> The opening dia. of a typical Common Sense milk bottle is 1 9/16" dia.
> (above the ledge/seat)...so just over 1 1/2".  But, I don't know how
> much 'slack' they had (I don't have a lid here to measure) - yet
> wouldn't think slack would be a good thing, for keeping out airborne
> 'stuff'.  But, prior to ones being made with a tab to pull on (get the
> lid out)...wouldnt the lids need to be of a material that the bottle
> pick could dig in to...yet not break...since the lid was used to reclose
> (wasn't it?).
>