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:
Jul. 02, 2007
Filed:
Aug. 26, 2004
Craig R. Bruns, Danville, CA (US);
Mark S. Fernwood, Danville, CA (US);
Thomas S. Blake, Danville, CA (US);
Craig R. Bruns, Danville, CA (US);
Mark S. Fernwood, Danville, CA (US);
Thomas S. Blake, Danville, CA (US);
Danville Materials, Inc., San Ramon, CA (US);
Abstract
A hand-holdable apparatus useful for abrading a surface is provided. The invention is particularly useful for dental applications using a stream of abrasive particles suspended in a gas stream to abrade the surface of a tooth. The apparatus of the invention may be modified to easily minimize 'bleed down' of the gas/abrasive stream using a pinch valve and to remove worn flexible conduits for routine maintenance and autoclaving of the apparatus. The apparatus of the invention also provides a novel pick-up assembly for delivery of abrasive particles.