公开(公告)号：US20180073246A1

公开(公告)日：2018-03-15

申请号：US15653283

申请日：2017-07-18

Applicant: UNITED STATES GYPSUM COMPANY

Inventor： James M. ULLETT ,  Naveen PUNATI

IPC: E04B2/78 ,  E04B2/74

Abstract: A panel for a shaftwall system includes a panel body with a core and at least one outer facing layer and an opposite backing surface. A score line is formed in the facing layer, defining two folded panel portions. The panel is folded along the score line to form a folded edge, and the folded panel portions are arranged so that the backing surfaces of the panel portions contact each other. A companion shaftwall building structure system is provided, including a plurality of the panels defining an enclosure, each panel being a ½-inch thick wallboard panel having a “V”-shaped score line defining a pair of panel portions, the score line forms a tapered edge of the folded panel. A plurality of brackets is provided, each bracket defining a panel track dimensioned for slidingly accommodating the folded panel and retaining the panel in place without the use of fasteners.

公开(公告)号：US20240150244A1

公开(公告)日：2024-05-09

申请号：US18205074

申请日：2023-06-02

Applicant: United States Gypsum Company

Inventor： Alexander J. DONOVAN ,  Naveen PUNATI

IPC: C04B28/14 ,  C04B11/02 ,  C04B14/10 ,  C04B14/20 ,  C04B14/28 ,  C04B24/06 ,  C04B24/26 ,  C04B24/38 ,  C04B38/10 ,  C04B40/00 ,  C04B40/06 ,  E04F21/02

CPC classification number: C04B28/146 ,  C04B11/02 ,  C04B14/102 ,  C04B14/20 ,  C04B14/28 ,  C04B24/06 ,  C04B24/2623 ,  C04B24/383 ,  C04B38/10 ,  C04B40/0032 ,  C04B40/0042 ,  C04B40/0641 ,  E04F21/026 ,  C04B2111/00637

Abstract: Perlite-free, lightweight setting-type joint compounds which comprise calcium sulfate hemihydrate with a dry density of less than 50 lb/ft3, a foaming agent having a HLB value of at least 10 and preferably comprising an alkylbenzene sulfonic acid having a linear alkyl chain containing 8 to 14 carbons and/or a salt thereof, and a combination of rheology modifiers. Methods for building wallboard assemblies and methods for wall patch and repair projects that include applying the perlite-free, lightweight setting-type joint compounds to a substrate.

公开(公告)号：US20210230067A1

公开(公告)日：2021-07-29

申请号：US17146940

申请日：2021-01-12

Applicant: United States Gypsum Company

Inventor： Christian HUCH ,  Alexander J. DONOVAN ,  Jeffrey F. GRUSSING ,  Naveen PUNATI ,  Pamela L. HARGROVE ,  Joseph W. SCHLUDE

IPC: C04B28/14 ,  C04B14/28 ,  C04B14/10 ,  C04B24/38

Abstract: A snap-setting joint compound with reduced calcium sulfate hemihydrate and improved sandability, as well as methods for building wall assemblies and repairing walls with the joint compound.

公开(公告)号：US20180087270A1

公开(公告)日：2018-03-29

申请号：US15466612

申请日：2017-03-22

Applicant: UNITED STATES GYPSUM COMPANY

Inventor： Gary Franklin MILLER ,  Joseph Edward SWINEA ,  Naveen PUNATI

IPC: E04B9/04 ,  E04B1/76 ,  E04B1/26 ,  E04B9/00 ,  E04B1/94

CPC classification number: E04B9/04 ,  C04B20/06 ,  C04B28/14 ,  E04B1/26 ,  E04B1/7654 ,  E04B1/94 ,  E04B1/945 ,  E04B9/001 ,  E04B9/225 ,  E04C3/16

Abstract: A combined wooden frame support and ceiling system is provided, each support including upper and lower wooden chords and a wooden structure connecting the lower chord to the upper chord for weight bearing purposes. A gypsum wallboard batten strip is attached to the lower chord, and defining a ledge extending from each side of the lower chord. A single thickness of gypsum wallboard panels is used to create a ceiling attached to the support, each panel used to create the ceiling is made from a slurry composition including less than 5% by weight of Grade 4 vermiculite. Upon the support being assembled in the ceiling system, with a plurality of the supports, and having lengths of insulation supported by the ledges of the adjacent supports, the ceiling system resists charring by fire for at least one hour.

公开(公告)号：US20210238096A1

公开(公告)日：2021-08-05

申请号：US17156258

申请日：2021-01-22

Applicant: United States Gypsum Company

Inventor： Qinghua LI ,  Mark K. HEMPHILL ,  Naveen PUNATI

IPC: C04B28/14 ,  C04B14/20 ,  B28B1/00 ,  B28B19/00

Abstract: Disclosed are a composite gypsum board and a method of preparing composite gypsum board. The board contains a set gypsum core sandwiched between two cover sheets. The core is formed from a slurry containing stucco, water, and optional ingredients such as foaming agent, accelerator, retarder, polyphosphate, starch, and dispersant, and core intumescent material. The board also contains at least one skim coat and/or hard edges. A face skim coat layer can be included on one side of the core, facing a face cover sheet. A back skim coat layer can be included on the other side of the core, facing a back cover sheet. Hard edges are known in the art and can be formed, e.g., continuously from a stucco slurry for forming the face and/or back skim coats. Preferably, the back skim coat layer and/or the hard edges are formed from a slurry containing stucco, water, skim coat or edge intumescent material (which have the same desired characteristics), and other optional additives as desired. The skim coat or edge intumescent material can be composed of the same material as the core intumescent material, if desired, but the skim coat and/or edge intumescent material is present in a higher relative concentration in its respective slurry than the amount of core intumescent material in the core slurry. Examples of suitable intumescent materials include expandable vermiculite (e.g., No. 4 or No. 5 according to the US naming system, or combinations thereof), expandable graphite, perlite, or any combination thereof.

公开(公告)号：US20130308411A1

公开(公告)日：2013-11-21

申请号：US13844133

申请日：2013-03-15

Applicant: UNITED STATES GYPSUM COMPANY

Inventor： James WITTBOLD ,  Chris C. LEE ,  Alfred C. LI ,  Naveen PUNATI ,  Bill RAGO ,  Luis CARRAZCO

IPC: B28C5/00

CPC classification number: B28C5/003 ,  B05C5/0254 ,  B05C5/0262 ,  B28B19/0092 ,  B29C33/30 ,  Y10T137/85938

Abstract: A slurry distributor includes a feed conduit and a distribution conduit in fluid communication therewith. The feed conduit includes an entry segment with a feed inlet and a feed entry outlet in fluid communication therewith and extending along a first feed flow axis. The feed conduit includes a shaped duct having a bulb portion in fluid communication with the feed entry outlet. The feed conduit includes a transition segment in fluid communication with the bulb portion and extending along a second feed flow axis in non-parallel relationship with the first feed flow axis. The bulb portion has an area of expansion with a cross-sectional flow area that is greater than a cross-sectional flow area of an adjacent area upstream from the area of expansion. The shaped duct has a convex interior surface in confronting relationship with the feed entry outlet of the entry segment.

Abstract translation: 浆料分配器包括进料管道和与其流体连通的分配管道。 进料管道包括具有进料入口和与第一进料流轴线流体连通的进料入口的进料段。 进料导管包括具有与进料入口出口流体连通的灯泡部分的成形导管。 进料导管包括与灯泡部分流体连通并沿第二进料流轴线与第一进料流轴线不平行关系延伸的过渡段。 灯泡部分具有膨胀区域，其横截面流动面积大于从膨胀区域上游的相邻区域的横截面流动面积。 成形管道具有与入口段的进料入口相对应的凸形内表面。