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. 18, 2003
Filed:
Aug. 22, 2001
Applicant:
Inventors:
John B. Long, Knoxville, TN (US);
Armistead M. Long, Austin, TX (US);
Assignee:
Heron Holdings, Knoxville, TN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 1/12 ; G01N 1/00 ; G01N 1/20 ; B01L 3/00 ;
U.S. Cl.
CPC ...
G01N 1/12 ; G01N 1/00 ; G01N 1/20 ; B01L 3/00 ;
Abstract
An apparatus is provided for extracting cross-sectional samples of bulk material from a moving belt conveyor with a rotating sample cutter. The sample cutter is driven around a circular sampling path by a pair of double-acting pneumatic cylinders that are connected to angularly offset crank throws. Fluid flow in and out of each pneumatic cylinder pressure chamber is independently regulated as a function of the respective cylinder rod position and direction of movement whereby both chambers may be simultaneously open to the pressure supply or to the atmospheric vent for a brief rotational arc.