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:
Dec. 05, 1989
Filed:
Jun. 22, 1988
Lorin G Doyle, Ashland, OH (US);
Flint & Walling, Inc., Kendallville, IN (US);
Abstract
A nozzle/venturi with a bypass for controlling the pressure differential and therefore the amount of air which is entrained into the fluid stream. The nozzle/venturi assembly is utilized in a filtering system for removing contaminants from a water supply. The nozzle/venturi assembly includes a nozzle/venturi with a water inlet, an air inlet and an outlet passage and a bypass valve with an adjustable passageway to control the fluid flow through the bypass. The bypass valve includes a diaphragm which is effected by the downstream pressure resulting in an adjustment of the pressure differential and a spring biased seal valve to control the pressure which will open the bypass. The nozzle/venturi assembly provides efficient and precise control of the pressure differential to ensure that a constant amount of air is entrained into the fluid stream through the entire pump cycle.