| Patent Number |
Title Of Patent |
Date Issued |
| 3998769 |
Mica, free, crack-resistant drying type joint compound |
December 21, 1976 |
| A drying type crack-resistant joint compound comprising terra alba and a binder, the compound being characterized in that it is essentially free of mica. |
| 3998419 |
Swivel type hanger bracket |
December 21, 1976 |
| An apparatus is disclosed for use in suspended ceilings. The apparatus is useful in leveling suspended ceilings while concurrently attaching them to supporting structures. The apparatus has an L-shaped connection piece having at least one opening in the base thereof, a swivel flange havi |
| 3998027 |
Decorative runner and wall |
December 21, 1976 |
| An improved ceiling runner and wall constructed therefrom wherein the exterior, decorative flange holding in place the wallboard of the wall is provided with means for removably engaging a decorative trim which may be added to alter the decorative appearance. |
| 3998020 |
Adjustable suspension systems for ceilings |
December 21, 1976 |
| An apparatus is disclosed for leveling suspended ceilings while attaching them to supporting structures. The apparatus has an upper body portion having a backplate, a top plate, and a side plate with each of the plates lying in a plane substantially perpendicular to the plane of the othe |
| 3998015 |
Resilient-edged wallboard and wall assembled therewith |
December 21, 1976 |
| A predecorated wall panel is disclosed for use in forming walls in which the joints between the panels are not to be finished. The panel includes a rigid core of green hydrated gypsum with a layer of resilient deformable material along at least one edge thereof being adhesively affixed t |
| 3998014 |
Protective edge configuration for structural sheeting |
December 21, 1976 |
| A structural sheeting unit, such as fiberous ceiling tile, is disclosed comprising a panel kerfed around the edge thereof and having an extended edge portion provided on one side of said kerf, thereby protecting the remaining edge portion from damage during handling, said extended edge |
| 3989398 |
Clip-on attachment members for structural steel joists |
November 2, 1976 |
| A clip-on attachment member is disclosed characterized by a portion of one leg of the member being bent slightly out of the plane of the rest of the leg, thereby permitting that leg of the member to be clipped to a hollow structural member to facilitate attachment thereto. |
| 3987600 |
Fire resistant doors |
October 26, 1976 |
| Fire-resisting doors having a novel framing, that is the stiles and rails of the door, are disclosed. The door comprises preferably a thermal insulating core and conventional outer facing cover sheets and is framed with a particular combination of glass fibers and gypsum in a particular |
| 3984596 |
Decorated gypsum board with expanded inorganic particle coating |
October 5, 1976 |
| A dried gypsum board article and a gypsum board to be dried, the latter comprising a wet gypsum core and a cover sheet to be securely laminated thereto in drying and a coating composition, the cover sheet having a porosity between about 90 and about 260 as determined by ASTM D 726-58; |
| 3975320 |
By-product gypsum fillers for mica-free joint compounds consisting of synthetic calcium sulphate |
August 17, 1976 |
| A filler for a mica-free joint compound, comprising by-product gypsum having a mean particle size between about 11 and about 12 microns, a percentage by weight of particles smaller than 1 micron of between about 5 and about 6.5, and a packed dry bulk volume no greater than about 93 cc. |
| 3974607 |
Fire-rated common area separation wall structure having break-away clips |
August 17, 1976 |
| A common area separation wall structure for separating adjacent occupancy areas is provided having a centrally located vertical fire barrier member comprised of a plurality of steel studs supporting a plurality of gypsum drywall panels, and wood-framed wall structures on each side of the |
| 3973302 |
Clip for attaching header to I-beam |
August 10, 1976 |
| A clip is disclosed for insertion into a C-shaped header for use in stiffening the header and concurrently attaching the stiffened header to an I-beam or the like. The clip includes a portion for insertion into the channel of the C-shaped header, said portion substantially filling a |
| 3970440 |
Compact air filter |
July 20, 1976 |
| A compact nestable air filter of generally rectangular form comprising a frame formed of an integral suitable cut and scored blank of paperboard, which, when assembled, comprises planar frame members engaging a substantially sheet-form filter element therebetween, and having flared f |
| 3965639 |
Beam-reinforced ceiling panels |
June 29, 1976 |
| An extra-wide ceiling panel and ceiling constructed therefrom characterized by a reinforcing member extending along the back surface thereof, the member being generally flat with negligible vertical extension so as not to interfere with the stacking of such panels. Means are provided for |
| 3964944 |
Manufacture of cementitious board |
June 22, 1976 |
| The invention relates to the manufacture of cementitious board, such as gypsum board, faced with paper or other sheets and having an improved accuracy of edge profile. A sheet to be folded at the lateral edges of the board is scored, and quick-setting adhesive, preferably a hot melt |
| 3964214 |
Smoke stop |
June 22, 1976 |
| A smoke stop for doors is disclosed. The smoke stop comprises a metal frame with a slot therein extending substantially the entire length of the frame on the door side thereof; a movable lid pivotally attached along one outer edge of the metal frame and releasably attached to a second ou |
| 3962840 |
Corner construction and clip therefor |
June 15, 1976 |
| A corner construction is provided which utilizes a support having an elongated metallic flange, a back-up clip resiliently engaging the flange, and a pair of panels. One panel has a surface thereof engaging a first portion of the clip and is secured to the flange. The second panel has a |
| 3956855 |
Door frame structure with safety lock bracket |
May 18, 1976 |
| A safety lock bracket is provided for affixing the end of a door frame header having internal roller tracks to the end of a door jamb over which it is mounted. |
| 3955330 |
Smoke stop for doors |
May 11, 1976 |
| A smoke stop for doors is disclosed. The smoke stop consists of a metal frame with a slot therein extending along substantially the entire length of the frame on the door side thereof; a continuous tube within the slot, the continuous tube having retarded decomposability at the kindling |
| 3952130 |
Mineral wool paper |
April 20, 1976 |
| A paper product comprising mineral fibers and a nonfibrous, highly refined gel binder, the product having a thickness no greater than about 0.080 inches and an apparent specific gravity of between about 0.25 and about 0.85. The product may be a sheet no thicker than about 0.012 inches, o |
| 3945741 |
Self-aligning hanger attachment bracket for structural steel joists |
March 23, 1976 |
| A hanger for mounting hollow metal joists perpendicular to headers and the like is disclosed. The hanger has a U-shaped top flange for hanging the hanger and a backplate suspended from the hanger with the backplate terminating at its bottom edge in a saddle for the joist to rest upon and |
| 3945167 |
Clip for the assembly of composite structural members |
March 23, 1976 |
| A clip and assembly of two structural channels front-to-back by use of the clip, the clip having a one-channel connecting portion and means for gripping portions of the side flanges of the other channel. |
| 3944698 |
Gypsum wallboard and process for making same |
March 16, 1976 |
| A specially prepared fiber reinforcement and improved gypsum wallboard are disclosed. The fiber reinforcement includes a multiplicity of relatively long fibers which are disposed at the interface of the core and cover sheets of the wallboard and are adhesively bonded to the cover sheets |
| 3943680 |
Stud having kerf-engaging flange and fire-retardant wall structure formed therewith |
March 16, 1976 |
| A unitary integral metal stud formed of sheet metal for constructing a fire-retardant wall and the wall structure formed of a plurality of studs and a pair of spaced-apart layers of gypsum wallboard panels in abutting relationship, the stud comprising a web having a pair of flanges defin |
| 3940899 |
Stud having struck-out flanges and fire-rated wall structure formed therewith |
March 2, 1976 |
| A metal stud for constructing a fire-rated wall and the wall structure formed of a plurality of studs mounted in runners and having at least two spaced-apart layers of wallboard panels with adjacent panels in abutting relationship, the stud being formed of an integral piece of sheet meta |
| 3935343 |
Molten salt method of producing fire resistant wood articles |
January 27, 1976 |
| Hardboard and other wood articles are made fire resistant by immersing the wood in a molten ammonium phosphate salt batn, preferably monoammonium phosphate. |
| 3934465 |
Post-tensioning load cell |
January 27, 1976 |
| The load cell disclosed is for detecting changes in tensile loading of a multiwire structural post-tensioning tendon for a concrete structure. The load cell has a pair of spaced end plates, an elastically deformable cylindrical steel member which extends between and is connected to the |
