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:
Sep. 18, 2007
Filed:
Sep. 20, 2005
Douglas Andrejewski, Hemlock, MI (US);
Thomas Dubay, Saginaw, MI (US);
Terence Lee Horstman, Frankenmuth, MI (US);
Roger Dale Spencer, Jr., Midland, MI (US);
Douglas Andrejewski, Hemlock, MI (US);
Thomas Dubay, Saginaw, MI (US);
Terence Lee Horstman, Frankenmuth, MI (US);
Roger Dale Spencer, Jr., Midland, MI (US);
Dow Corning Corporation, Midland, MI (US);
Abstract
A single roll crusher for comminuting high purity materials includes a roll with teeth spaced around the circumference of the roll. The roll is rotatably mounted inside a housing. The housing has a top with an entrance port, sides, and bottom with an exit port. The roll, teeth, and at least the inside surfaces of the top, sides, and bottom are fabricated from a material of construction that minimizes contamination of silicon. The material of construction may be tungsten carbide with a cobalt binder. The single roll crusher is used for processing polycrystalline silicon.