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:
Jan. 21, 2003
Filed:
Jun. 24, 1999
Applicant:
Inventors:
Assignee:
Mydata Automation AB, Bromma, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05C 5/00 ; B05B 3/14 ; B05B 1/706 ; B05B 3/500 ; B23K 3/06 ;
U.S. Cl.
CPC ...
B05C 5/00 ; B05B 3/14 ; B05B 1/706 ; B05B 3/500 ; B23K 3/06 ;
Abstract
In a device for ejecting small amounts of a liquid material having accurately defined volumes from a chamber ( ), the chamber has a nozzle aperture ( ) and a rod ( ) is mounted in or attached to a wall of the chamber ( ), so that an end surface ( ) of the rod is located opposite and at a small distance of the nozzle aperture ( ). A driving device is coupled to the rod ( ) for displacing the end surface ( ) forwards and backwards inside the chamber with a very small stroke, with a high acceleration and a large force, so that a pressure wave is formed and propagates in the material in the chamber ( ). The pressure wave then ejects material out of the nozzle aperture ( ).