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:
Sep. 13, 2005
Filed:
Sep. 04, 2003
Applicant:
David R. Johnson, Woodbury, MN (US);
Inventor:
David R. Johnson, Woodbury, MN (US);
Assignee:
Ecolab Inc., St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B021/00 ;
U.S. Cl.
CPC ...
Abstract
A flow verification sensor apparatus () is used with a constant volume pump () that pumps a liquid product () from a container (). A plummet () is positioned in a flow tube (). A sensor () is positioned upward from the lower end of the flow tube (). A timer () measures the length of time for the plummet () to move from a first position to a second position after activation of the pump (). Suitable alarms () are operated to indicate low flow or out of product conditions.