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:
May. 03, 1988
Filed:
Aug. 01, 1986
Applicant:
Inventors:
Teruo Tano, Tokyo, JP;
Shuji Hamada, Yokohama, JP;
Assignee:
Niigata Engineering Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B24C / ; B24C / ;
U.S. Cl.
CPC ...
51319 ; 51421 ; 51424 ; 51426 ;
Abstract
A method and apparatus for sandblasting a workpiece. The workpiece is placed at a machining position. Air is sucked around the workpiece at the machining position in a first direction to produce air streams. During sucking, abrasive grains are blown against a face of the workpiece in a second direction for sandblasting the work, the second direction crossing the first direction at an angle .theta. smaller than 90.degree.. Abrasive grains blown against peripheries of the workpiece are larger in velocity than abrasive grains blown against a central portion of the workpiece.