Patents Assigned to National Gypsum Company
  • Panel edge alignment clip
    Patent number: 4897978
    Abstract: A hollow wall having a V-shaped rigid wire clip with two almost parallel legs engaged in holes in a metal element on a wallboard back face, with the clip head extending across the wallboard edge joint, to hold abutting wallboard edges coplanar, in which at least one of the clip legs has an intermediate bend engaging the hole periphery, whereby a thin tool, extended through the joint, can rotate the clip head around the intermediate bend, which is engaged with the hole periphery, which removes the clip head from behind one of the two abutting edges, for nondestructive removal of one of the wallboards of the wall.
    Type: Grant
    Filed: November 21, 1988
    Date of Patent: February 6, 1990
    Assignee: National Gypsum Company
    Inventor: Robert J. Menchetti
  • Clip for outwardly opening C-stud
    Patent number: 4870794
    Abstract: A clip for permitting attachment of wallboard to the open side of an outwardly opening C-shaped metal stud, including a clip body portion which engages three sides of the metal stud for increased stability, and a clip hanger portion which extends upwardly and inwardly through the stud open front side and has tabs which engage behind the flanges of the stud open front side.
    Type: Grant
    Filed: December 9, 1988
    Date of Patent: October 3, 1989
    Assignee: National Gypsum Company
    Inventor: Robert J. Menchetti
  • C-stud and wedged bracket
    Patent number: 4845904
    Abstract: A hollow C-shaped vertical metal stud and a furniture bracket affixed thereto. The bracket includes a back plate which is disposed, at a rearwardly and a downwardly angle, within the confines of the stud, whereby weight of furniture on the bracket wedges the back plate between the stud front and back walls, preventing downward movement.
    Type: Grant
    Filed: June 6, 1988
    Date of Patent: July 11, 1989
    Assignee: National Gypsum Company
    Inventor: Robert J. Menchetti
  • Integral wallboard and stud
    Patent number: 4843784
    Abstract: A wallboard and stud unit formed of an elongate strip of foldable steel affixed to the wallboard back face, adapted to be folded outwardly away from the wallboard to function as a wall stud, in a hollow wall having a plurality of such units in back-to-back relationship.
    Type: Grant
    Filed: June 6, 1988
    Date of Patent: July 4, 1989
    Assignee: National Gypsum Company
    Inventors: Robert J. Menchetti, Richard P. Weir, Robert M. Chapman
  • Wall trim member
    Patent number: 4843771
    Abstract: A wall in which at least one wall trim member has a face portion, spaced outwardly from the plane of the wallboard, and has an angled sidewall which, by its angled nature, tends to blend with both the wall trim face portion and the wallboard surface, which angled side wall is removed in short sections of this first wall trim member whereat a second wall trim member, with a face coplanar with the first wall trim member face portion, is abutted against the first wall trim member.
    Type: Grant
    Filed: June 29, 1988
    Date of Patent: July 4, 1989
    Assignee: National Gypsum Company
    Inventors: Robert M. Chapman, Robert J. Menchetti
  • Casing trim
    Patent number: 4843783
    Abstract: A casing trim, and the combination therewith of a flat vinyl strip, and the method of concealing building wooden casings and the like, wherein the casing trim is nailed to the edge portion of a casing, with one flange of the casing trim extending over an edge of the casing, and the perpendicularly directed face portion has a channel which receives and retains an edge of the flat vinyl strip.
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: July 4, 1989
    Assignee: National Gypsum Company
    Inventor: Salvatore R. Taravella
  • Casing trim
    Patent number: 4843790
    Abstract: A casing trim, and the combination therewith of a flat vinyl strip, and the method of concealing building wooden casings and the like, wherein the casing trim is nailed to the edge portion of a casing, with one flange of the casing trim extending over an edge of the casing, and the perpendicularly directed face portion has a channel which receives and retains an edge of the flat vinyl strip. In an added embodiment, the flat vinyl strip is replaced by a wide cap having a rearwardly extending flange, for engagement in a forwardly extending channel of a receiver, all of which are disposed around the edge of adjacent vinyl siding.
    Type: Grant
    Filed: January 17, 1989
    Date of Patent: July 4, 1989
    Assignee: National Gypsum Company
    Inventor: Salvatore R. Taravella
  • Universal secondary stud
    Patent number: 4837988
    Abstract: A secondary vertical stud or furniture channel for mounting against one side of a plurality of vertically spaced upwardly opening horizontal channels in a hollow partition wall framework, with slots in the secondary stud for engaging the upwardly extending flanges of the horizontal channels. The secondary studs are able to be freely located at any position along the length of the wall, for supporting wall furniture where desired, for locating a perpendicularly extending second partition wall wherever desired, or for receiving fasteners or adding stability to the wall framework wherever desired, by very simple installation procedures.
    Type: Grant
    Filed: January 29, 1988
    Date of Patent: June 13, 1989
    Assignee: National Gypsum Company
    Inventors: Robert J. Menchetti, Richard P. Weir
  • Wall framing system
    Patent number: 4811539
    Abstract: A wall framing system including U-shaped metal studs in which there are two web portions with a plurality of aligned holes in the two webs, short sections of channel are disposed through said aligned holes for supporting wallboard thereon, and means are provided near the ends of the short channel for maintaining the ends of the channels in a fixed position relative to the wallboard supported thereon.
    Type: Grant
    Filed: November 2, 1987
    Date of Patent: March 14, 1989
    Assignee: National Gypsum Company
    Inventor: Robert J. Menchetti
  • Sag resistant ceiling panel
    Patent number: 4802321
    Abstract: A ceiling panel, in a drop ceiling, formed from a relatively large ceiling board and at least one reinforcing metal channel affixed to the board top side, in which the channel has at least one opening shaped to form a tongue. The tongue extends into an opening on a metal plate which is mechanically affixed to the top of the board, such as by a plurality of tangs which penetrate the back of the board.
    Type: Grant
    Filed: May 18, 1988
    Date of Patent: February 7, 1989
    Assignee: National Gypsum Company
    Inventor: Robert J. Menchetti
  • Electrical raceway floor track
    Patent number: 4800695
    Abstract: An electrical raceway floor track and a partition embodying such floor track wherein the floor track is an elongate aluminum extrusion with a relatively wide upwardly opening lower channel connected to a relatively narrower upwardly opening upper channel by a solid rigid vertical wall. Wallboards and studs are supported by the upper channel, utilities are disposed between the channels and base trim strips are attached to the lower channel to hide the track and utilities. Electrical boxes and cable shelves are easily mounted between the channels with clips engaging ridges in the channels. Shallow grooves guide during screw insertion and provide lines of weakness for removal of short narrow sections where needed.
    Type: Grant
    Filed: October 2, 1987
    Date of Patent: January 31, 1989
    Assignee: National Gypsum Company
    Inventor: Robert J. Menchetti
  • Integral wallboard and stud
    Patent number: 4796396
    Abstract: A wallboard and stud unit formed of an elongate strip of foldable steel affixed to the wallboard back face, adapted to be folded outwardly away from the wallboard to function as a wall stud, in a hollow wall having a plurality of such units in back-to-back relationship.
    Type: Grant
    Filed: August 10, 1987
    Date of Patent: January 10, 1989
    Assignee: National Gypsum Company
    Inventor: Robert J. Menchetti
  • Hurricane protector clips
    Patent number: 4782638
    Abstract: Post-formed vinyl siding affixed to a substructure by nails extending through a channel shaped hurricane clip disposed over the top nailing portion of the siding. A top narrow strip of the clip front leg projects outwardly a short distance to form a guide so an applicator won't drive the nail in tightly and prevent movement of the siding during expansion and contraction.
    Type: Grant
    Filed: November 3, 1986
    Date of Patent: November 8, 1988
    Assignee: National Gypsum Company
    Inventor: John K. Hovind
  • Aqueous joint compound seal
    Patent number: 4773556
    Abstract: In a bucket, partially filled with an aqueous slurry of drywall joint compound, the joint compound is hermetically sealed from the air above by a formed-in-place flexible solid seal disposed over the entire top of the joint compound and preferably extending a short distance up the inner wall of the bucket. For partial use of the joint compound, the seal is first separated from the bucket inner wall and then lifted off the joint compound, cleaned, and kept in a condition suitable for reuse.
    Type: Grant
    Filed: January 24, 1983
    Date of Patent: September 27, 1988
    Assignee: National Gypsum Company
    Inventor: Richard E. Smith
  • Interior corner drywall bead
    Patent number: 4763455
    Abstract: An elongate thin strip, with two similar flanges forming a 90.degree. angle, each flange having a shallow step whereby a recessed area for joint compound is provided, when used as a drywall inside corner bead.
    Type: Grant
    Filed: June 16, 1983
    Date of Patent: August 16, 1988
    Assignee: National Gypsum Company
    Inventor: Joseph W. Schneller
  • Encapsulated PCM aggregate
    Patent number: 4747240
    Abstract: Phase change materials (PCM's) having a phase change at about 10.degree. C. to 30.degree. C. are incorporated like a fine aggregate into building materials.
    Type: Grant
    Filed: August 6, 1981
    Date of Patent: May 31, 1988
    Assignee: National Gypsum Company
    Inventors: Walter E. Voisinet, Deall Daymon, John A. Slyh
  • Roll-coating method and apparatus
    Patent number: 4741929
    Abstract: A roll-coating apparatus and method of using it, the apparatus having a pair of narrow rubber tires mounted to be driven by the roll-coater doctor roll, disposed to transfer a narrow band of coating material along the two opposite edge areas of a board which is subsequently coated throughout the full width of the board by the roll-coater main applicator roll.
    Type: Grant
    Filed: March 19, 1987
    Date of Patent: May 3, 1988
    Assignee: National Gypsum Company
    Inventor: Donald A. Kossuth
  • Staple gun application of vinyl siding
    Patent number: 4731917
    Abstract: A pneumatically operated staple gun with an adjustably spaced away elongate guide shoe allows control, with fine adjustment, of depth of penetration of staples, when stapling, through nailing slots of vinyl siding, into thick low density insulating boards. Shoe includes slot locating means in one embodiment.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: March 22, 1988
    Assignee: National Gypsum Company
    Inventor: Thomas R. Krowl
  • Wallboard identification system
    Patent number: 4725078
    Abstract: Gypsum wallboard, for use in drywall construction, printed with suitable identifying indicia on the face using an optical brightener which is visible only under ultra-violet light. The wallboard is identifiable as to source, after the board is installed, and even after having been painted.
    Type: Grant
    Filed: June 30, 1986
    Date of Patent: February 16, 1988
    Assignee: National Gypsum Company
    Inventor: Edmund J. Janicki
  • Predecorated gypsum board
    Patent number: 4725477
    Abstract: A predecorated gypsum wallboard and the method of manufacture wherein a protective base coat is applied on the face paper by a rotogravure printing of the protective coat with minute openings very closely spaced throughout the coating, as by printing the coat in the form of reasonably uniformly sized tiny dots with about 1000 to about 100,000 dots per square inch, a decorative coat is applied over the base coat, gypsum wallboard is formed with the coated surface of the paper on the outside face, and the newly formed wallboard, when hardened, is dried by heating and removing water from the gypsum core through the still porous coated paper.
    Type: Grant
    Filed: December 23, 1985
    Date of Patent: February 16, 1988
    Assignee: National Gypsum Company
    Inventors: Donald R. Kole, Arthur E. Kennedy, George J. Bean, Jr.