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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.:

US 10646837 B1

PDFFull Text
Date of Patent:
May. 12, 2020

Filed:

Mar. 22, 2019

Method for producing fiber reinforced cementitious slurry using a multi-state continuous mixer

Applicant:

United States Gypsum Company, Chicago, IL (US);

Inventors:

Ashish Dubey, Grayslake, IL (US);

Peter B. Groza, Antioch, IL (US);

Christopher R. Nelson, Lindenhurst, IL (US);

Assignee:

UNITED STATES GYPSUM COMPANY, Chicago, IL (US);

Attorneys:

Vorys, Sater, Seymour and Pease LLP

Pradip Sahu

Philip T. Petti

Primary Examiner:

David L Sorkin

Int. Cl.
CPC ...
B28B 3/22 (2006.01); B01F 7/00 (2006.01); B28B 1/52 (2006.01); B28B 5/02 (2006.01); B28C 5/12 (2006.01); B28C 5/14 (2006.01); B28C 5/40 (2006.01); B29B 7/48 (2006.01); B29C 48/67 (2019.01); B29C 48/00 (2019.01); B29B 7/42 (2006.01); B29C 48/40 (2019.01); B29C 48/57 (2019.01); B01F 3/12 (2006.01); B01F 7/04 (2006.01); B01F 7/06 (2006.01); B01F 7/08 (2006.01); B01F 13/10 (2006.01); B01F 15/02 (2006.01);
U.S. Cl.
CPC ...
B01F 7/0065 (2013.01); B01F 3/1221 (2013.01); B01F 7/00041 (2013.01); B01F 7/00058 (2013.01); B01F 7/00341 (2013.01); B01F 7/00416 (2013.01); B01F 7/00633 (2013.01); B01F 7/00708 (2013.01); B01F 7/042 (2013.01); B01F 7/06 (2013.01); B01F 7/083 (2013.01); B01F 7/085 (2013.01); B01F 13/1027 (2013.01); B01F 15/0251 (2013.01); B28B 1/526 (2013.01); B28B 3/224 (2013.01); B28B 5/027 (2013.01); B28C 5/1238 (2013.01); B28C 5/1246 (2013.01); B28C 5/1276 (2013.01); B28C 5/143 (2013.01); B28C 5/146 (2013.01); B28C 5/148 (2013.01); B28C 5/402 (2013.01); B29B 7/421 (2013.01); B29B 7/429 (2013.01); B29B 7/481 (2013.01); B29B 7/482 (2013.01); B29B 7/483 (2013.01); B29B 7/485 (2013.01); B29B 7/489 (2013.01); B29C 48/022 (2019.02); B29C 48/402 (2019.02); B29C 48/57 (2019.02); B29C 48/67 (2019.02); B01F 2015/0221 (2013.01); B01F 2215/0047 (2013.01);
Abstract

A method in which a stream of dry cementitious powder from a dry powder feeder passes through a dry cementitious powder inlet conduit to feed a first feed section of a fiber-slurry mixer. An aqueous medium stream passes through at least one aqueous medium stream conduit to feed a first mixing section the fiber-slurry mixer. A stream of reinforcing fibers passes from a fiber feeder through a reinforcing fibers stream conduit to feed a second mixing section of the fiber-slurry mixer. The stream of dry cementitious powder, aqueous medium stream, and stream of reinforcing fibers combine in the fiber-slurry mixer to make a stream of fiber-cement mixture which discharges through a discharge conduit at a downstream end of the mixer.

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