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:
Jan. 31, 1995
Filed:
Aug. 25, 1993
Applicant:
Inventors:
John E Thomas, River Falls, WI (US);
Jody A Toetschinger, Crystal, MN (US);
John E McCall, Jr, St. Paul, MN (US);
Assignee:
Ecolab Inc., St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
G01F / ;
U.S. Cl.
CPC ...
73295 ; 222-1 ; 222 23 ; 222154 ; 222185 ; 422119 ; 422263 ; 422264 ; 422266 ; 374 54 ; 116216 ; 116227 ;
Abstract
Disclosed is an indicator (15, 35) for determining the level of contents in an opaque, plastic container (10). The container (11) is filled with a solid chemical (11), such as a detergent. A spray of warm or hot water (19) impinges upon the eroding surface (16) of the solid chemical (11) to produce a chemical solution. The container (10) is provided with a thermo-chromatic strip (15, 35) for detecting the level of solid chemical (11) within the plastic capsule (10). A method of dispensing a solid chemical (11) and a dispensing container (10) are also disclosed.