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. 07, 1987
Filed:
Oct. 18, 1985
Wilhelm Weiss, Regensburg, DE;
Abstract
A method and apparatus for filling a bottle with an oxygen sensitive liquid such as beer in which the bottle is pre-evacuated, pressurized with pure CO.sub.2, over-filled with liquid at constant pressure and then brought back to the proper fill level by injecting pure CO.sub.2 and forcing the excess back into the gas pressurized liquid storage tank while the bottle is still coupled to the filling head. After uncoupling, the bottle is transported to under a closure cap applying device at which there are nozzles that project CO.sub.2 under the device and over and around the mouth of the bottle so the space even within the cap is purged of air. The CO.sub.2 used for purging is adequately free of air since it is taken from the storage tank to which CO.sub.2 is returned from the bottles as a result of filling liquid displacing the CO.sub.2 gas which is diluted only to the extent that pre-evacuation is not perfect.