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:
Jun. 18, 2002
Filed:
Nov. 17, 1999
Joseph Hess, Vignes Perdues, CH;
Hu Bo, Peseux, CH;
Raphael Weber, La Chaux-de-Fonds, CH;
Isabel Ortega, Ruedes Jeanneret, CH;
Cedric Barraud, Haulerive, CH;
Nicolaas Frans de Rooij, B{overscore (o)}le, CH;
Bas de Heij, Neuchatel, CH;
Microflow Engineering SA, Neuchatel, CH;
Abstract
The liquid droplet spray device ( ) comprises a housing formed of a superposition of a first and a second substrate ( ) and a space ( ) within the housing for containing a liquid substance ( ), vibrating means ( ) for applying a frequency vibration to the substance ( ) thereby generating the liquid droplet spray, and outlet means ( ) for ejecting the liquid droplet spray. The outlet means comprise a cavity ( ), output nozzles ( ) and output channels ( ) connecting the cavity ( ) to the outlet nozzles ( ). According to the invention, the vibrating means ( ) creates a standing wave pattern within the liquid substance ( ), and the outlet means are arranged such that said outlet nozzles ( ) are superposed on the vibration mode peaks of the standing wave pattern. Advantageously, the first and second substrates have similar geometrical shapes. Minimal retention and optimal flow of the substance are obtained.