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. 17, 1990
Filed:
Sep. 28, 1988
Mark Fernwood, Danville, CA (US);
Thomas S Blake, Danville, CA (US);
Other;
Abstract
Disclosed herein is an apparatus for abrading, etching, polishing and cleaning metallic or non-metallic surfaces that operates through mechanical sandblasting principles. The present invention is embodied in an apparatus for abrading, etching or polishing a surface with a jet stream containing a mixture of solid particles and a gaseous medium. The apparatus comprises a hollow tubular handle with a nozzle at one end for dispensing the mixture of a solid material and a gaseous medium, and a compressed air and pulverulent material receiving member at the other end of the handle. The nozzle section of the apparatus contains a mixing chamber where a vacuum is created by the flowing pressurized gaseous medium, the pressure gradient results in aspiration of the solid material which mixes with and becomes entrained in the gaseous medium flow and passes through the nozzle tip. The pulverulent material is contained in a small rear reservoir secured to a pick-up apparatus which is meshed with a supply receiving member and is located at the opposite end of the apparatus from the nozzle tip.