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:
Jul. 08, 1986
Filed:
Nov. 02, 1984
Duane D Nowlin, New Brighton, MN (US);
Raymond C Walton, St. Paul, MN (US);
Ecodyne Corporation, Chicago, IL (US);
Abstract
A flow indicator and a method for monitoring the operation of a chemical feed pump are provided. This indicator includes a housing defining a flow chamber and having an inlet through one end and an outlet through the other end. The inlet and the outlet of the housing are in communication with the fluid conduit of the pump, and the flow chamber is a vertical component of the flow path of the fluid flowing through the conduit. The housing contains two freely movable balls in the flow chamber, one ball having a specific gravity greater than that of the fluid and the other having a lower specific gravity. It is at least partially transparent to enable the operator of the indicator to observe the movement of the balls. The method for monitoring the pump involves placing the two balls in the flow chamber, connecting the indicator to the fluid conduit, operating the pump, and observing the action of the balls.