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:
Aug. 01, 2000
Filed:
Mar. 13, 1998
James S Belt, Utica, OH (US);
Frank R Wilgus, Powell, OH (US);
Frank A Wilgus, Westerville, OH (US);
Owens Corning Fiberglas Technology, Inc., Summit, IL (US);
Abstract
In a method of forming a pattern of granules on a moving asphalt coated sheet, a blend drop of first and second granules is discharged onto the sheet. The blend drop forms a granule deposit on the sheet including an inner portion of first granules and an outer portion of second granules. An apparatus for use in the method includes a nozzle having an orifice for discharging a blend drop of first and second granules onto the sheet. A first granule feed chamber is provided for feeding first granules into the nozzle. A second granule feed chamber is provided for feeding second granules into the nozzle. The first and second granule feed chambers are positioned so that the first granules are fed inside the second granules in the nozzle.