公开(公告)号：US20190315659A1

公开(公告)日：2019-10-17

申请号：US16292988

申请日：2019-03-05

Applicant: UNITED STATES GYPSUM COMPANY

Inventor： David D. PELOT ,  Samar EMAMI ,  Robert H. NEGRI ,  Juan Carlos Ruiz Castaneda ,  Christopher R. NELSON ,  John J. ROXBURGH ,  Edgar R. DE LA ROSA CRUZ ,  Jorge A. GARCIA TORRES ,  Miguel Gama Goicochea ,  Antonio CONTRERAS ,  Juan HUITZIL

IPC: C04B28/14 ,  C04B24/38 ,  C04B24/04 ,  C04B24/26 ,  C04B24/12 ,  C04B22/06 ,  C04B22/16 ,  C04B22/14 ,  C04B18/02 ,  C04B38/02 ,  C04B40/00

Abstract: Method of making foamed gypsum slurry having 15 to 90 volume percent gas bubbles including: passing first slurry including water and on dry basis 50 to 98 wt. % calcium sulfate hemihydrate, 1 to 50 wt. % calcium carbonate, and 0.1 to 10 wt. % cellulose thickener via a first hose to a Wye connector conduit first inlet opening at Rate C and passing alum solution via a second hose to a second inlet opening of the conduit at Rate D to create combined mixed stream passing from the conduit to a static mixer for mixing for Time 3 to activate at least a portion of the calcium carbonate and alum to generate CO2 and create the foamed gypsum slurry; transferring the slurry from the mixer to a cavity between two wall boards via a third hose. Allowing the slurry in the cavity to expand, harden and dry.

公开(公告)号：US20190100927A1

公开(公告)日：2019-04-04

申请号：US15722359

申请日：2017-10-02

Applicant: UNITED STATES GYPSUM COMPANY

Inventor： David D. PELOT ,  William J. RAGO ,  Charles W. COCHRAN ,  Samar EMAMI

IPC: E04F21/02 ,  E04F21/165 ,  B44C7/04

CPC classification number: E04F21/026 ,  B44C7/04 ,  B44C7/06 ,  B65H35/0053 ,  E04F21/05 ,  E04F21/165 ,  E04F21/1652 ,  E04F21/1657 ,  Y10T156/1788

Abstract: A joint tape embedding apparatus configured to determine the bonding and/or “feel” of embedding joint tape into a dry wall or wall board joint using a particular joint compound. The joint embedding apparatus is configured to allow the same user or different users to accurately repeat the determination of the bonding and/or “feel” attributes of the joint compound.

公开(公告)号：US20180099908A1

公开(公告)日：2018-04-12

申请号：US15711583

申请日：2017-09-21

Applicant: UNITED STATES GYPSUM COMPANY

Inventor： Samar EMAMI ,  Salvatore C. IMMORDINO ,  Robert H. NEGRI ,  David D. PELOT ,  Jeffrey F. GRUSSING ,  Juan Carlos RUIZ CASTAÑEDA ,  Christopher R. NELSON ,  John Jason ROXBURGH ,  Srinivas VEERAMASUNENI

IPC: C04B28/14 ,  C04B22/06 ,  C04B22/14 ,  C04B22/10 ,  C04B38/10

Abstract: A gypsum-based composition of calcium sulfate hemihydrate with (a) alum and calcium carbonate and/or (b) zeolite and sodium percarbonate for making foamed gypsum slurry. A method to make foamed gypsum slurry from the composition. A method to make foamed gypsum product from the composition. A cavity wall having a cavity filled with the foamed gypsum product.