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:
Oct. 02, 1990
Filed:
Sep. 26, 1989
Applicant:
Inventor:
Roger A Howells, Orefield, PA (US);
Assignee:
Air Products and Chemicals, Inc., Allentown, PA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B24C / ;
U.S. Cl.
CPC ...
51436 ; 51263 ; 51438 ;
Abstract
A method and apparatus for preventing binding and overloading of feed augers or screws used to convey blast media (e.g. shot, pellets or irregular shaped particles) from a media storage hopper to a media blasting device. The invention includes a damper to close off media to the screws and a method for controlling start-up and shut down of the media blast system.