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:
Apr. 15, 1986
Filed:
Aug. 03, 1984
Applicant:
Inventors:
Bruce A Rabine, Oakdale, MN (US);
Steven M Stensvad, White Bear Lake Township, Ramsey County, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
356 36 ; 356244 ;
Abstract
The novel device prepares samples of loose particles such as roofing granules to present a level surface from which colorimeter measurements can be made. The particles to be measured overfill a dish, the lip of which has a bevel providing a knife edge at its inner diameter. A roller is rolled back and forth across the dish to push excess particles beyond the knife edge from which they fall through a grid on which the dish rests.