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:
Oct. 15, 2002
Filed:
Apr. 02, 1999
Paul J. Mattia, Prior Lake, MN (US);
James L. Copeland, Apple Valley, MN (US);
Oliver Murphy, III, St. Paul, MN (US);
Kaye Kit-han Yuen, Minneapolis, MN (US);
Ecolab, Inc., St. Paul, MN (US);
Abstract
An apparatus that prevents an undesirable chemical reaction between different liquid chemical streams in a dispenser comprising a dispenser having a common manifold leading to a use locus. The common manifold has a pumping station directed to the common manifold and the pumping station has at least two chemical input lines. The dispenser is controlled by an electromechanical controller that prevents pumping two liquid chemical streams in sequence without an intervening water flush and prevents pumping two liquid chemical streams simultaneously. The liquid inputs to the pumping station are keyed such that the inputs can be connected only to containers that fit the keyed inputs.