The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 1983
Filed:
Jul. 17, 1981
Efrem M Ostrowsky, Highland Park, IL (US);
Ethyl Products Company, Richmond, VA (US);
Abstract
A thermoplastic closure suitable for fitment to a threaded container neck is disclosed. The closure has a top wall with an annular sidewall depending therefrom. To provide a gas-tight seal between the closure and the container, there is provided a gas-tight sealing system above the closure thread. About the inside surface of the annular sidewall is an extended closure thread which, due to its extent, requires the user to make two turning motions to achieve removal of the closure from the container. By requiring two turning motions, sufficient time is provided for venting of any pressurized gas from the container to the atmosphere. This venting can be facilitated by the utilization of any conventional venting means.