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. 23, 1989
Filed:
Jul. 15, 1986
Fred R Kohlbach, Schondorf a.Ammersee, DE;
Bowater Packaging Limited, London, GB;
Abstract
The device for the air-free filling in particular of flexible bags (1) under counterpressure consists of a filling pipe (5) which, with a sealing cone (9), can be guided into a filling and extraction connecting piece (2) of the bag. A filling valve (13) is provided in the direct proximity of the filling-pipe delivery orifice (4), which filling valve (13) is formed from a conical surface (15) of the filling-pipe inner wall (14) and a conical mating piece (18) which is provided on the end of a valve stem (17) which is guided in the filling pipe in axially movable manner. The product to be filled flows into the filling-pipe inner space (20) through a product feed line, and, via a longitudinal bore (19) made in the valve stem, a vacuum can be applied or a protective gas and also a sterilizing agent can be fed at the area around the delivery orifice (4). This device permits a complete, procedural separation between the product feed to the flexible bag and the evacuating, gassing and sterilizing operations required before or after filling.