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:
Nov. 20, 2007
Filed:
Dec. 14, 2005
Bruce Lynn Petersen, Lisle, IL (US);
Richard James Haszel, Mundelein, IL (US);
James R. Wittbold, Des Plaines, IL (US);
Bruce Lynn Petersen, Lisle, IL (US);
Richard James Haszel, Mundelein, IL (US);
James R. Wittbold, Des Plaines, IL (US);
United States Gypsum Company, Chicago, IL (US);
Abstract
A method for providing a smoothly mixed slurry to a web is provided which includes inserting calcined gypsum and water into a mixer (), agitating the contents of the mixer () to form an aqueous dispersion of the calcined gysum, and passing the agitated contents from an outlet () of the mixer () into a slurry dispensing apparatus () including a flexible, resilient conduit (). Additionally, the method includes the step of creating a back-pressure on the mixture in the slurry dispensing apparatus by constricting the conduit (). The constricting of the conduit () is effected by a constrictor valve () located on the conduit ().