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. 04, 2018
Filed:
Aug. 25, 2017
Dlhbowles, Inc., Canton, OH (US);
Shridhar Gopalan, Westminster, MD (US);
Dharapuram N Srinath, Elliot City, MD (US);
Christopher South, Washington, DC (US);
DLHBOWLES, INC., Canton, OH (US);
Abstract
An oscillating or pulsing fluid stream, or flow, is produced from a flow of pressurized air by fluidic apparatusin a deviceconfigured for use in surface cleaning, sweeping, lawn care applications, and the like. Converging inlet chamber walls, define a tapered internal lumen having a smooth narrowing profile is configured to generate at a power nozzlea high velocity stream with minimal pressure drop. Downstream of the power nozzle, first and second control ports CP, CPare in fluid communication with the high velocity streamand with each other via an inertance loophaving a lumen of selected cross sectional area and length. The varying air flow is directed through an outlet chambershaped to produce an oscillating flowor a pulsating flow