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. 19, 1993
Filed:
Aug. 24, 1992
Applicant:
Inventor:
William F Sand, Cincinnati, OH (US);
Assignee:
Hydro Systems Company, Cincinnati, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137888 ; 137896 ;
Abstract
An improved venturi eductor for proportional dispensing of chemicals into flowing water includes a large antisiphoning air gap section to satisfy water system regulations. The air gap section includes an outer wall and an inner wall with a gap between the walls. Both walls include offset windows that provide a circuitous path from the center of the air gap to the exterior of the unit. Passageways extend from the gap to a downstream section of the unit to carry away fluid that might collect in this gap. Further, the shape and location of various orifices within the device creates a slight suction to further limit overspray.