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:
Apr. 22, 1986
Filed:
Jul. 19, 1983
Applicant:
Inventor:
Toshinori Kameda, Ishioka, JP;
Assignee:
National Can Corporation, Chicago, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65B / ;
U.S. Cl.
CPC ...
53431 ; 5311 / ; 141-6 ; 141 51 ; 141 67 ;
Abstract
Pressurization of containers with liquid nitrogen to impart container strength and content protection is effected by injecting a small quantity of liquid nitrogen before sealing the container by the methods and apparatus including a gas pressure system wherein liquid nitrogen is maintained by control means at a constant pressure with nitrogen gas being separated from liquid nitrogen before dispensing and a recirculating pump pressure system wherein liquid nitrogen from a second of two supplies is pumped through a conduit to a dispensing gun and surplus liquid and gas is returned to the supply.