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:
Feb. 18, 2020
Filed:
Sep. 20, 2017
Palo Alto Research Center Incorporated, Palo Alto, CA (US);
Victor Beck, Menlo Park, CA (US);
David Mathew Johnson, San Francisco, CA (US);
PALO ALTO RESEARCH CENTER INCORPORATED, Palo Alto, CA (US);
Abstract
A controlled-volume spray deposition system has a fluid feed system including a pair of bi-directional, counter-rotating rollers to dispense fluid as a first surface, the rollers operable to rotate in a first direction to dispense the fluid, a second surface positioned to receive the fluid when the rollers rotate in the first direction, and the rollers operable to rotate in a second direction to retract the fluid to cause the fluid to stretch and form a filament until it breaks to form a spray. A method of generating a controlled-volume spray includes feeding fluid between two counter-rotating rollers as a first surface as they rotate in a first direction until the fluid contacts a second surface, reversing the counter-rotating rollers such that they pull the fluid to form a fluid filament, and causing the filament to break into a spray.