Patents Represented by Attorney George E. Manias
  • Patent number: 5531803
    Abstract: A metal respirator cartridge which may be completely assembled prior to performing the encapsulation process wherein the periphery of the filter element is completely sealed to the metal cartridge body. The cartridge has a metal cover provided with a unique air inlet opening which performs two distinct functions, that is, as an opening to admit air into the metal respirator cartridge as is normal; and as an opening which, during the manufacturing process, allows a liquid sealant to be introduced into the interior of the metal cartridge body to encapsulate the periphery of the filter element.
    Type: Grant
    Filed: October 21, 1994
    Date of Patent: July 2, 1996
    Assignee: Mine Safety Appliances Company
    Inventors: Thomas M. Salapow, Roger P. Wolf, Thomas J. Scanio, John F. Kuhn
  • Patent number: 5129151
    Abstract: A module gauge is described for moduling the next-to-be-erected roof panel to conform its actual width with the design modular width by compressing or expanding the roof panel as needed. Conformation of the panel widths results in a weathertight roof structure.
    Type: Grant
    Filed: December 26, 1991
    Date of Patent: July 14, 1992
    Assignee: Robertson-Ceco Corporation
    Inventors: Kwon S. Kim, Clarence S. Salisbury, Dennis P. Watson
  • Patent number: 5065557
    Abstract: A curtain wall system incorporating a dry seal system to preclude ingress of water and the infiltration of exterior air. The curtain wall system includes displaceable vertical splines, which when displaced release the opposite vertical side edges of any selected panel. The released panels may then be removed and replaced. The arrangement allows the removal and installation of panels in a non-sequential manner.
    Type: Grant
    Filed: November 1, 1990
    Date of Patent: November 19, 1991
    Assignee: Robertson-CECO Corporation
    Inventors: Russell Laplante, James A. Rockar, Robert H. Stegeman, Jr.
  • Patent number: 4558544
    Abstract: An adjustable pedestal adapted to support individually removable panel members in accurate, edge-aligned relation and in a common horizontal, that is level plane. The pedestal includes a head assembly supported on an upper end of a support. The head assembly includes a head member having a generally flat upper surface which is adjustable vertically, rotationally and laterally of the support rod. Abutment means adjustable along the support rod, is engaged by the head member and establishes a position of the head member wherein the upper surface resides in the horizontal plane. Clamping means clamps the head member to the support rod. Radially extending lugs extend above the upper surface of the head member. The arrangement is such that an adjacent pair of lugs of one pedestal cooperates with adjacent pairs of lugs from adjacent pedestals to define a panel supporting surface which is horizontal and which coincides with said horizontal plane.
    Type: Grant
    Filed: November 29, 1984
    Date of Patent: December 17, 1985
    Assignee: H. H. Robertson Company
    Inventors: Raymond E. Albrecht, Robert G. Lindner
  • Patent number: 4558548
    Abstract: A non-displaceable, self-righting shim for use in any application where critical alignment is required of adjacent vertical elements. The shim presents an elongated central opening including a large upper portion and a small lower portion, and a slot having an exit end communicating with the central opening and an entrance end at the perimeter edge of the shim. The weight distribution of the shim relative to the large upper portion is such that the shim will hang in a normal upright position with the small lower portion and the slot below the large upper portion. The arrangement assures positive placement of the shim once installed; avoids loosening and fall-off of the shim which may be caused by thermal expansion and contraction of the shimmed element and/or by vibrations associated with the adjacent vertical elements; and eliminates the need for holding the shim in position while securing the fastener.
    Type: Grant
    Filed: November 16, 1983
    Date of Patent: December 17, 1985
    Assignee: H. H. Robertson Company
    Inventor: Richard A. Hieger
  • Patent number: 4554771
    Abstract: A cellular decking unit, for field-assembly or factory-assembly, useful in the construction of a wire distributing floor structure. The cellular decking unit is assembled from upper and lower metal sheets arranged so as to provide laterally open channels. The channels are adapted to receive and to be closed by side portions of the adjacent fluted decking units thereby to form lateral enclosed raceways.
    Type: Grant
    Filed: July 2, 1984
    Date of Patent: November 26, 1985
    Assignee: H. H. Robertson Company
    Inventors: Ashok K. Marwah, Charles H. Norris, Jr.
  • Patent number: 4335269
    Abstract: An insert for an underfloor electrical wiring distribution system of the type incorporating a distribution unit presenting alternating cells and troughs and capping means enclosing one of the troughs to provide an intermediate cell having at least one trough portion accessible from the upper surface of the floor. The insert includes an isolator device having a generally U-shaped configuration including spaced sidewalls and a connecting front wall. The isolator device is installed in the trough portion to provide an isolated chamber. Connecting means in the form of cooperating tabs and apertures positively secures the device to the distribution unit. A partition plate may be installed with a lower portion thereof retained by the device and with an upper portion thereof extending above the isolator device.
    Type: Grant
    Filed: September 19, 1980
    Date of Patent: June 15, 1982
    Assignee: H. H. Robertson Company
    Inventor: Paul L. Haskins
  • Patent number: 4323723
    Abstract: A dual service outlet unit provides above-the-surface accessibility to power and to telephone and signal services. The unit includes cover and base members comprising segments of separate metal extrusions. When interfitted, the cover and base members provide separate compartments, one for power wiring and the other for telephone/signal wiring.
    Type: Grant
    Filed: April 4, 1980
    Date of Patent: April 6, 1982
    Assignee: H. H. Robertson Company
    Inventors: Frank W. Fork, Charles J. Kelly
  • Patent number: 4304083
    Abstract: An anchor element inserted through the end of a panel joint into the joint cavity provides an anchor site. Components, such as window frames, flashings, girts and the like, are secured to the anchor element by positive fasteners. Integrally formed flexible arms retain the anchor element in fixed position until its anchoring function is required.
    Type: Grant
    Filed: October 23, 1979
    Date of Patent: December 8, 1981
    Assignee: H. H. Robertson Company
    Inventor: John W. Anderson
  • Patent number: 4297524
    Abstract: An electrical activating assembly provides a flush-with-the-surface simplex or duplex electrical receptacle. The assembly incorporates support means comprising a receptacle support plate, and partition means dividing a chamber provided within a barrier, such as a floor, into a first compartment containing the receptacle and a second compartment for connections to low voltage services, such as telephone and signal services. The partition means may support a second receptacle which is accessible for plug connections from the second compartment. A protective closure member provides access to the receptacle from the barrier outer surface, and permits passage of the low voltage wiring from the second compartment.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: October 27, 1981
    Assignee: H. H. Robertson Company
    Inventor: Frank W. Fork
  • Patent number: 4289921
    Abstract: An electrical activating assembly provides a flush-with-the-surface electrical receptacle. The assembly includes a closure member providing access to a simplex or duplex receptacle supported by a support plate substantially flush with a barrier upper surface. The closure member includes a perimeter bead extending upwardly from the member upper face to provide a cover socket. A cover fitting within the cover socket is pivotally and removably connected to the perimeter bead for access to the receptacle. An alternative closure member is disclosed for use with a high voltage simplex receptacle. A cover fits within the cover socket, is secured to the receptacle, and includes an access opening exposing the outlet.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: September 15, 1981
    Assignee: H. H. Robertson Company
    Inventors: Rodney W. Gartner, Charles R. Gray, John O. Hazen
  • Patent number: 4262514
    Abstract: Apparatus for bending a laminated panel about at least one intended bend line extending parallel with the bottom of a notch formed in the backing of the panel. The panel is retained in engagement with a forming edge which extends along and is at least coextensive with the bend line. The panel and the forming edge are supported spaced-apart from a base. A substantially air-impervious membrane covers the panel and cooperates with the base to provide a substantially closed chamber. Means is provided establishing a pressure within the chamber which is less than the pressure outside of the chamber, whereby the pressure outside of the chamber forces the panel to bend about the forming edge thereby to place the panel portions on opposite sides of the bend line in angular relation relative to each other. A method for bending laminated panels is disclosed.
    Type: Grant
    Filed: October 22, 1979
    Date of Patent: April 21, 1981
    Assignee: H. H. Robertson Company
    Inventors: Norbert C. Howell, Walter Tischuk
  • Patent number: 4257549
    Abstract: An aluminum-base metal clad galvanized steel laminate is prepared by pressing a foil of aluminum-base metal against a steel sheet which has a molten zinc-rich metal coating adhered to both surfaces. The preformed aluminum-base metal foil is metallurgically bonded to the zinc-rich metal coating by a zinc-aluminum eutectic layer as the zinc-rich coating cools and solidifies. The resulting laminate has an outer aluminum-base metal surface, a zinc-aluminum eutectic layer, an intermediate zinc-rich metallic layer, a zinc-iron intermetallic layer, and a steel core.
    Type: Grant
    Filed: May 2, 1979
    Date of Patent: March 24, 1981
    Assignee: H. H. Robertson Company
    Inventor: Robert J. Bricmont
  • Patent number: 4248021
    Abstract: A roof or wall structure incorporating support assemblies of this invention is disclosed. The roof or wall structure comprises an inner sheath secured to plural spaced-apart purlins or girts; an outer sheath; plural spaced-apart support means each assembled from a plurality of the present support means, secured to the inner sheath and to the outer sheath for maintaining the outer sheath spaced from the inner sheath; and thermal insulation filling the space between the inner and outer sheaths. The arrangement is such that the thermal insulation has a substantially uniform thickness throughout the roof or wall structure. The depth of the support means may be varied to accommodate the desired thickness of thermal insulation. The support means accommodate thermal expansion and contraction of the outer sheath independently of the inner sheath, thereby totally eliminating the possibility of leaks associated with prior art structures.
    Type: Grant
    Filed: August 22, 1979
    Date of Patent: February 3, 1981
    Assignee: H. H. Robertson Company
    Inventor: Frederick W. Dyer
  • Patent number: 4232493
    Abstract: A floor structure comprising a metal subfloor including metal cellular units providing plural enclosed cells; housings associated with certain of the cells, each adapted to provide future access to different electrical services at one location in the floor structure; a covering layer of monolithic concrete covering the subfloor and the housing, and a layer of fireproofing material covering the lower face of the metal subfloor. Activating means is provided establishing access to the enclosed cells through the housing without significantly reducing the desired fire endurance of the floor structure and without increasing the thickness of the layer of fireproofing material. The fireproofing material has a thickness which is less than that required to provide the floor structure with a desired fire endurance when the housing is activated. A method is disclosed for establishing acess to the enclosed cells through the insert while maintaining the fire endurance capability of the floor structure.
    Type: Grant
    Filed: April 28, 1978
    Date of Patent: November 11, 1980
    Assignee: H. H. Robertson Company
    Inventors: Charles R. Gray, John O. Hazen, Charles J. Kelly
  • Patent number: 4232085
    Abstract: A flexible polyurethane foam having a low flame spread index is produced by combining polyol (preponderantly diol and/or triol) with polyisocyanate (preponderantly diisocyanate) in the presence of a foaming catalyst and a blowing agent. By combining at least 75% by weight of pentabromoethyl benzene, based upon the weight of the polyol, a flame spread index less than 150 can be achieved for the resulting foam in the ASTM test E-162-76. Significantly, polyurethane foams having a flame spread index less than 25 have been produced with this invention.
    Type: Grant
    Filed: August 14, 1979
    Date of Patent: November 4, 1980
    Assignee: Freeman Chemical Corporation
    Inventors: William L. Carlstrom, Gary L. Maechtle
  • Patent number: 4227593
    Abstract: A pad adapted to sustain an impact load by stepwise absorption of kinetic energy. The pad incorporates a collapsible, i.e., crushable core adapted to undergo stepwise deformation under the force of the impact load. Stepwise deformation of the core provides, during impact load application, a significant lowering of the peak dynamic load sustained by the pad and applied to the pad support. The normally encountered high buckle-initiating peak loads are entirely avoided by the present pad.
    Type: Grant
    Filed: November 25, 1977
    Date of Patent: October 14, 1980
    Assignee: H. H. Robertson Company
    Inventors: Robert J. Bricmont, Philip A. Hamilton, Raymond M. L. Ting
  • Patent number: 4223503
    Abstract: Upstanding polysurfaced male and female lips are provided along confronting edges of adjacent elements, such as building panels. The female lip is engaged over the male lip and when rotated about the male lip is snap-fitted into interlocked relation therewith. The lips provide an upstanding joint which secures the adjacent elements in fixed angular relation to each other. The lips are interengaged along plural angularly spaced-apart regions and are overlapped such that vertical and lateral disengagement of either lip relative to the other is precluded along the entire length of the joint.
    Type: Grant
    Filed: February 26, 1979
    Date of Patent: September 23, 1980
    Assignee: H. H. Robertson Company
    Inventor: James G. Hague
  • Patent number: 4223068
    Abstract: Rigid polyurethane foam is produced from polyisocyanate and polyol wherein 5-30% by weight of the polyol ingredient is a digestion product of polyalkylene terephthalate residues or scraps digested with organic polyols. The resulting rigid polyurethane foam exhibits uniform density and, when compared with a corresponding polyurethane foam which does not include the said digestion products, exhibits equivalent or superior physical strength properties. With fire retardant rigid polyurethane foams wherein the organic polyol ingredient includes halogenated organic polyols, use of 5-30% by weight of the said digestion product in the organic polyol ingredient, achieves a rigid fire retardant polyurethane foam having a lower flame spread and a lower smoke generation than a corresponding polyurethane foam which does not include the said digestion product. When fabricated in a closed mold, the present rigid polyurethane foam has a more uniform density, i.e.
    Type: Grant
    Filed: September 27, 1978
    Date of Patent: September 16, 1980
    Assignee: Freeman Chemical Corporation
    Inventors: William L. Carlstrom, Ronald W. Reineck, Glenn R. Svoboda
  • Patent number: 4216306
    Abstract: A film-forming polymerizable resin is produced from combining acrylic acid, the diglycidyl ether of N-butyl diol and 3,3',4,4'-benzophenone tetracarboxylic dianhydride (BTDA). The diglycidyl ether of N-butyl diol is combined with BTDA and sufficient acrylic acid to combine with unreacted epoxide groups. The BTDA constitutes 2 to 10 percent by weight of the three ingredients. The ingredients are heated to a low acid number where the epoxy equivalent of the mixture is greater than 3,500.The resulting film-forming resin can be pigmented and can be cured in the presence of ultraviolet radiation.
    Type: Grant
    Filed: March 22, 1979
    Date of Patent: August 5, 1980
    Assignee: Freeman Chemical Corporation
    Inventor: Rudolph H. Boeckeler