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:
Feb. 02, 1982
Filed:
Mar. 19, 1980
Applicant:
Inventors:
Walter A Nichols, Richmond, VA (US);
George L Mathe, Bon Air, VA (US);
Assignee:
Philip Morris Incorporated, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73 56 ;
Abstract
A rheometer of the extrusion plastometer type is provided with means for forcibly mechanically mixing the material to be tested within the chamber of the rheometer. The rheometer preferably includes a pair of telescopically arranged pistons which can be selectively coupled and uncoupled from one another so that one of them can serve as a mixing device. The pistons are coupled for unitary movement when discharging the material being tested.