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:
Nov. 20, 1990
Filed:
May. 31, 1988
Applicant:
Inventors:
Paolo Benedetti, Modena, IT;
Fausto Filippi, Modena, IT;
Assignee:
Tetra Dev-Co, Modena, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B08B / ;
U.S. Cl.
CPC ...
1341041 ; 1341 / ; 134103 ; 134171 ; 141 89 ; 141 91 ;
Abstract
In packing machines which have a filling pipe with two or more ducts, a rinsing of the filling pipe with cleaning fluid may lead to only one duct being properly cleaned. In order to prevent this, an arrangement is provided on packing machines which have a coupling part provided with valves with passages which are coupled in series with respective ducts in the filling pipe. The valve is adapted so that it is acted on towards the closed position by the cleaning fluid flowing past and thus limits the flow through the one duct so that the other duct too is assured of an adequate flow for effective cleaning.