WILLIAM MCCLURE WEST
Pilots at Park Ave, San Jose, CA
License number
California A2033435
Issued Date
Jul 2015
Expiration Date
Jul 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
1905 Park Ave STE 100, San Jose, CA 95126
Professional information
Snap-On, Screw-Off Cap With Tamper-Evident Skirt And Container Neck
US Patent:
5593055, Jan 14, 1997
Filed:
Mar 16, 1994
Appl. No.:
8/213864
Inventors:
Richard E. Repp - San Jose CA
William R. West - San Jose CA
Daniel Luch - Morgan Hill CA
William R. West - San Jose CA
Daniel Luch - Morgan Hill CA
Assignee:
Portola Packaging, Inc. - San Jose CA
International Classification:
B65D 4134
US Classification:
215256
Abstract:
A tamper-evident, snap-on, screw-off closure is used with a specially shaped container neck. The neck has at least one first helical thread on a neck stretch portion, and at least one external ratchet tooth on a locking wall portion below the neck stretch. The closure has an upper skirt having at least one second helical thread mating with the first helical thread of the neck and a lower skirt with at least one internal ratchet tooth shaped and positioned to engage the external ratchet tooth when the closure is applied to the neck. The teeth formed on the skirt interior and neck exterior are arranged to provide at least one circumferentially extending stretch of the tamper-evident band where the teeth are not engaged. A line of weakness extending vertically through the disengaged stretch of the tamper-evident band is ruptured when the closure is unscrewed from the neck.