Including Moisture Or Waterproof Component Patents (Class 428/351)
  • Patent number: 5059479
    Abstract: A pressure-sensitive adhesive emulsion composition, characterized in that it is a pressure-sensitive adhesive emulsion composition containing the ingredients (A) and (B) below; the content of ingredient (B) is set at 1-70 solid parts per 100 solid parts by weight of the emulsion composition.(A) A polymer derived from at least one compound selected from a group including alkyl acrylates, alkyl methacrylates, and vinyl compounds, and having a glass transition temperature in the range of -60.degree. C. to -30.degree. C.(B) A bituminous emulsifier with an average particle diameter of the emulsified particles of 0.5-3.0 .mu.m.
    Type: Grant
    Filed: December 29, 1989
    Date of Patent: October 22, 1991
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Hajime Yuyama, Fumio Maekawa, Kazuo Umekage
  • Patent number: 5059481
    Abstract: Heat-shrinkable films suitable for packaging food articles such as frozen poultry, primal meat cuts, and processed meat products. In one embodiment, the film may be a biaxially stretched monolayer film of a very low density polyethylene copolymer. In another embodiment, the film may be a biaxially stretched multilayer film comprising a first outer layer of an ethylene-vinyl acetate copolymer, a core layer of a barrier film such as a polyvinylidene chloride copolymer or an ethylene-vinyl alcohol copolymer, and a second outer layer comprising a blend of an ethylene-vinyl acetate copolymer and a very low density polyethylene copolymer. The multilayer film is preferably made by coextrusion of the layers. The films are fabricated into bags useful for the aforementioned purposes. The bags have improved toughness.
    Type: Grant
    Filed: March 28, 1990
    Date of Patent: October 22, 1991
    Assignee: Viskase Corporation
    Inventors: Stanley Lustig, Nancy M. Mack, Jeffrey M. Schuetz, Stephen J. Vicik
  • Patent number: 5057345
    Abstract: A polymer blend comprises (A) a fluorinated ethylene-propylene copolymer and (B) a fluoroelastomer. The fluoroelastomer comprises a block copolymer comprising at least one elastomeric segment comprising tetrafluoroethylene, vinylidene fluoride, and hexafluropropylene repeat units in a mole ratio 45-90:5-50:0-35 and at least one nonelastomeric segment comprising tetrafluoroethylene and ethylene repeat units. The weight per cent of copolymer (A) relative to the combined weights of copolymer (A) and fluroelastomer (B) is between about 70% and about 97% or between about 3% and about 30%.
    Type: Grant
    Filed: August 17, 1989
    Date of Patent: October 15, 1991
    Assignee: Raychem Corporation
    Inventor: Leonard Barrett
  • Patent number: 5051259
    Abstract: An adhesive, flat skin barrier product for use as semi-manufacture in the production of, a.o., dressings, wound-care devices, electrodes and fastening means for ostomy equipment and catheters, consists of alternating zones of material of at least two different kinds (26,28,30) at least one of which is a skinfriendly self-adhesive material. The zones are parallel and extend in a direction usually at right angles to the main surfaces of the product. The zones may for instance be parallel strips, co-axial rings, co-wound Archimedean spirals or short strands.The skin barrier product offers the advantage that in a simple way it may be produced to comprise, besides the sealing material itself, other components for special purposes, e.g. having contents of antiseptics, medicaments or others biologically active substances of liquid-transporting or electrically conductive structures.
    Type: Grant
    Filed: October 10, 1989
    Date of Patent: September 24, 1991
    Assignee: Coloplast A/S
    Inventors: Hans Olsen, Finn Poulsen, Peter Samuelsen
  • Patent number: 5030487
    Abstract: A method of joining, repairing or reinforcing substrates, particularly polymeric pipes for transporting fluids, e.g. natural gas and water. The method makes use of an article, preferably a heat-recoverable article, which comprises a conductive polymer composition and which is heated to its recovery temperature by passing electrical current through the conductive polymer. Preferably the article is a heat-shrinkable coupler. The coupler may make direct contact with and fuse to the pipes, or there may be an insert between the coupler and the pipes. The article preferably comprises carbon blank dispersed in either a sintered polymer, particularly ultra high molecular weight polyethylene or a very high molecular weight polymer, particularly polyethylene having a molecular weight greater than 150,000.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: July 9, 1991
    Assignee: Raychem Corporation
    Inventor: Nachum Rosenzweig
  • Patent number: 5015512
    Abstract: A solder-enclosing heat-shrinkable tube comprising:a heat-shrinkable tube comprising a first fluororesin;a ring-shaped fusible solder inserted in the tube; andring-shaped thermoplastic resin inserts placed in the tube on either side of the ring-shaped fusible solder;wherein the ring-shaped thermoplastic resin inserts comprising a blend of(A) a second fluororesin analogues to the first fluororesin, and(B) an-ethylene-vinyl acetate copolymer compatible with the second fluororesin.
    Type: Grant
    Filed: October 26, 1989
    Date of Patent: May 14, 1991
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Yasuyo Matsumoto
  • Patent number: 5006376
    Abstract: A molded joint boot obtained by using a highly hard and highly elastic thermoplastic polyester elastomer as the molding material. The molded boot is formed into the shape of a conical bellows having a major-diameter portion connected to a minor-diameter portion by a tapered wave-like portion. Along the direction from the major-diameter portion to the minor-diameter portion, the ratio of the outside diameter of the crest portion on the minor-diameter side of a given wave to the outside diameter of the immediately-preceding trough portion of the same wave is confined within the range of about 1.08 to about 1.40. The subject molded boot is processed by injection molding, and the thermoplastic polyester elastomer employed as the molding material is above about 70 kg/cm.sup.2 in tensile yield strength, above about 30% in tensile yield elongation, and within the range of about 430 kg/cm.sup.2 to about 1700 kg/cm.sup.2 in tensile elasticity modulus.
    Type: Grant
    Filed: February 1, 1990
    Date of Patent: April 9, 1991
    Assignee: Toyo Tire and Rubber Co., Ltd.
    Inventors: Yoshihiro Arima, Soiti Otuka, Nishida Kazushige
  • Patent number: 4997689
    Abstract: A method is disclosed for forming longitudinally watertight sealed portions in a cable bundle comprising a plurality of cable strands which employs a composite adhesive strip having at least two layers, a first layer consisting of a mass having good adhesive properties at ambient temperature, and a second layer consisting of a melt adhesive. At the location of the portion to be sealed, the layer of the composite adhesive strip having good adhesive properties at ambient temperature is adhesively secured to the spread-out cable strands of the cable bundle to be sealed. After winding the cable strand layer provided with the composite adhesive strip upon itself or folding it together, an outer heat-shrinkable material (hose or sheet material) is applied about the portion to be sealed.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: March 5, 1991
    Assignee: DSG Schrumpfschlauch GmbH
    Inventors: Dieter Langen, Helmut Arenz
  • Patent number: 4992501
    Abstract: Repulpable tapes, their composition and the process of making the same, which retain adhesion and tack over a wide range of humidity and temperature, are provided. The improved composition comprises the addition of 10 to 50 parts by weight of a partially to fully hydrogenated rosin and at least 1 part by weight of polyethylene glycol.
    Type: Grant
    Filed: June 26, 1989
    Date of Patent: February 12, 1991
    Assignee: The Kendall Company
    Inventors: Robert Hanninen, Shiro G. Takemoto, Mildred C. Richards
  • Patent number: 4990379
    Abstract: A tubular article comprises an electrically conductive polymeric material. The article increases in wall thickness on recovery. It can be used for example as a duct seal or as an internal coupler or seal for hollow conduits such as pipes. The article may have plain or convoluted walls.
    Type: Grant
    Filed: September 8, 1988
    Date of Patent: February 5, 1991
    Assignee: Raychem Corporation
    Inventors: Per J. T. Jensen, Joergen M. Berth
  • Patent number: 4990380
    Abstract: A tubular heat recoverable article comprises conductive polymeric material and is heated to effect recovery by the passage of electrical current therethrough. Elongate electrodes are attached on the surface or embedded in longitudinal flanges extending along the article. The flanges also comprise conductive polymeric material but are not heat recoverable, and therefore remain substantially undeformed on recovery other than bending to accommodate transitions. This means that the contact resistance between the electrode and the conductive material of the flange does not increase significantly on recovery.
    Type: Grant
    Filed: September 8, 1988
    Date of Patent: February 5, 1991
    Assignee: Raychem Corporation
    Inventors: Per J. T. Jensen, George B. Park, Stephen M. Baigrie, George M. J. Gansbuehler, Richard J. Penneck
  • Patent number: 4979526
    Abstract: Wallpaper is removed by contacting the wallpaper with a liquid composition which permeates the paper and softens the adhesive which holds the wallpaper to a wall. A vapor barrier is applied to the liquid contacted wallpaper which prevents evaporation of the liquid and maintains continuous contact between the liquid and the wallpaper until the adhesive is softened, after which the wallpaper is stripped away from the wall surface. An article of manufacture for protecting one embodiment of this method includes a vapor barrier sheet having open-celled interstices on one side thereof and a dry composition carried in the interstices. The dry composition forms a gel when contacted with a paper-permeating, adhesive-softening liquid.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: December 25, 1990
    Inventor: Gus J. Rudy
  • Patent number: 4980214
    Abstract: The composite product consists of a central body is formed of a substance or a material having poor mechanical properties and is in the form of a beam or wedge having a large thickness with respect to width, said central body being is covered, at least over its length by a film or a sheath made of a heat shrinkable plastic shrunk by any suitable heating means after being placed in position around said central body said sheath surrounding the central body is produced by winding thin strips of at least one shrinkable film strip with the adjacent edges of the overlapping strips. The wrapped film can be heat shrunk and the adjacent edge thermally welded by the same heat treatment. The composite and the product can be utilized to produce casing elements for concrete or wedging blocks.
    Type: Grant
    Filed: May 31, 1989
    Date of Patent: December 25, 1990
    Inventor: J. J. Charriere
  • Patent number: 4969402
    Abstract: Permanent white indicia are applied to a polymeric surface, preferably of a black, heat-recoverable marker sleeve for wire or cable, using an ink composition comprising a pigment that is thermally stable at a temperature of at least about 350.degree. C., preferably titanium dioxide and a binder, such as nitrocellulose, and then heating the surface to permatize the mark. The marked article passes MIL-STD-202 in mark permanence.
    Type: Grant
    Filed: January 31, 1989
    Date of Patent: November 13, 1990
    Assignee: Raychem Corporation
    Inventors: Randolph W. Chan, Lawrence D. Schwartz, Richard E. Rodkey
  • Patent number: 4963405
    Abstract: Tape for encasing electronic parts comprising a carrier tape having a plurality of recesses for encasing electronic parts and a plurality of guide perforations, and a cover tape pasted onto said carrier tape with an adhesive so as to seal only said recesses while leaving said guide perforations open.
    Type: Grant
    Filed: July 20, 1989
    Date of Patent: October 16, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Shunsuke Yamashita, Norihito Kondoh
  • Patent number: 4961986
    Abstract: A sealing member for a container has a membrane, e.g. aluminum foil, and a first sheet, e.g. polyester, part of which is bonded to the membrane. The other part of the sheet is free, so as to form a tab, to enable the seal to be detached. The seal can be attached to the neck of a bottle by a hot melt adhesive. The sheet and membrane can be stamped from a compound sheet and be of the same size.
    Type: Grant
    Filed: March 2, 1988
    Date of Patent: October 9, 1990
    Assignee: Stanpac Inc.
    Inventors: Michael P. Galda, Stephen H. Witt
  • Patent number: 4960624
    Abstract: A fluoroelastomer composition is disclosed, which comprises a mixture of 100 parts by weight of a tetrafluoroethyline-propylene copolymer, not smaller than 1 part by weight and smaller than 100 parts by weight of a vinylidene fluoride-fluoroolefin copolymer having a fluoroolefin content of 1 to 20 mol %, and a cross-linking agent, said mixture being cross-linked by irradiation with electron beams. The fluoroelastomer composition has a high mechanical strength and improved low temperature characteristics. When the content of the vinylidene fluoride-fluoroolefin copolymer is not smaller than 10 parts by weight and smaller than 100 parts by weight per 100 parts by weight of the tetrafluoroethylene-propylene copolymer the fluoroelastomer composition is suitable as a material for producing heat shrinkable tubes.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: October 2, 1990
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Keiji Ueno
  • Patent number: 4954213
    Abstract: A wrap-around sleeve for environmental sealing of cables etc. comprises a first web of shrinkable material, preferably electrically-heatable and having closure rails at opposing edge portions which can be held together to maintain the sleeve in a wrapped configuration. A second web extends from one of the rails within the sleeve, it has a length less than the length of the sleeve, and it can act as a localized cable build-up, or help to seal between branching cables.
    Type: Grant
    Filed: October 27, 1988
    Date of Patent: September 4, 1990
    Assignee: Raychem Corporation
    Inventors: Doucet Jos, Mendes L. Neves
  • Patent number: 4946732
    Abstract: Improved insulation segments for fluid conduits such as pipes and ducts, having a nontacky moisture resistant strip which extends along edges of the insulation which are adapted to be secured to other portions of the insulation, or to other insulation segments using a pressure sensitive, adhesive tape. This strip preferably comprises a cured adhesive which bonds to the paper or other surface to which it is applied which provides a good, dry, dirt free, smooth surface to which the pressure sensitive adhesive tape will strongly adhere.
    Type: Grant
    Filed: January 3, 1989
    Date of Patent: August 7, 1990
    Assignee: Venture Tape Corp.
    Inventors: Lewis S. Cohen, Ivan Rodrigues
  • Patent number: 4944987
    Abstract: The invention relates to a heat-recoverable covers which comprises embedded electrical resistance heaters, and to methods of covering an elongate object using such covers.In a preferred embodiment, the cover comprises a heat-recoverable polymeric sheet (22) or fabric, provided with upstanding rails (24,25) as a first closure means. A heating element (36) is embedded in the sheet, and arranged to follow a serpentine path such that each return loop portion 38 projects beyond the edges of the cover. The sheet is coated on its inner surface with a layer of adhesive and/or sealant (28,30).In use, the cover is wrapped around a substrate (32) at least once, and first and second closure means (24,25 and 26,27) are engaged to hold the cover in the wrapped configuration. The cover is then heated to cause the cover to recover, and the adhesive and/or sealant to form a seal.
    Type: Grant
    Filed: February 22, 1989
    Date of Patent: July 31, 1990
    Assignee: N. V. Raychem S. A.
    Inventors: Johannes M. Cordia, Roger W. Evans, Robert H. Van Loo
  • Patent number: 4943463
    Abstract: Thermoplastic articles such as fenders, of large cross-sectional dimensions, may be made by extrusion without shrinkage voids by extruding a first stream of theremoplastic as a hollow profile, and extruding a second stream of molten thermoplastic by a second extruder and forcing same under pressure into the hollow profile to till the voids of shrink-age on cooling.
    Type: Grant
    Filed: August 21, 1987
    Date of Patent: July 24, 1990
    Assignee: Oy Wiik & Hoglund AB
    Inventor: John T. Back
  • Patent number: 4931330
    Abstract: The invention relates to a prefabricated, slip-resistant surface coating which comprises a sheet member having a film on its surface, said film embedded therein in plurality of finely divided abrasive particles. This coating can be adapted to make a bathtub surface slip-resistant.
    Type: Grant
    Filed: March 29, 1988
    Date of Patent: June 5, 1990
    Inventors: Sam S. Stier, Robert E. Kaufman
  • Patent number: 4929478
    Abstract: Sleeves formed of fabrics comprised wholly or in part from engineered plastic materials which are settable by heat to be biased to a specific sleeve geometry are disclosed. One form of sleeve illustrated involves heat-setting plastic material to a helical configuration by wrapping an elongated strip of the fabric material helically on a mandrel, heating the material while in the helical configuration, and thereafter cooling the material so that is has a permanent helical set with the side edges of the material in overlapping relation. the sleeves so formed may be collapsed into a short cylinder for packaging. In use, the compressed cylinder is allowed to expand lengthwise over an elongate object or objects to effect a jacketing of the same without additional assembly effort. A second form of sleeve disclosed involves setting the fabric material in tubular form, wherein the product is formed to have side edges abutting one another or in overlapping relation.
    Type: Grant
    Filed: June 17, 1988
    Date of Patent: May 29, 1990
    Assignee: The Bentley-Harris Manufacturing Company
    Inventors: Thomas B. Conaghan, Harry F. Gladfelter, Joseph S. Kite, III, Marie C. Tresslar
  • Patent number: 4920720
    Abstract: A method is provided for adhering a shrink sheet floor covering to subflooring using a double-faced adhesive tape applied along the perimeter of the subflooring, as well as a composition therefor. The adhesive tape includes a substrate having on each side an adhesive layer. One of the adhesive layers is bonded to the subflooring, and the other adhesive layer is bonded to the shrink sheet floor covering. The adhesive layer bonded to the floor covering is tolerant to plasticizer migrating from such covering. Migration of plasticizer to the adhesive layer bonded to the subflooring is prevented by means of the adhesive tape substrate layer, which is substantially impermeable to plasticizer migration. The adhesive tape is applied only along the perimeter of the subflooring, allowing the shrink flooring material to shrink freely at all points within the perimeter after application to the subflooring.
    Type: Grant
    Filed: July 11, 1988
    Date of Patent: May 1, 1990
    Assignee: Tarkett Inc.
    Inventor: Michael H. LaBianca
  • Patent number: 4906497
    Abstract: A hot-melt adhesive comprising at least one component which under the action of microwaves on the dry hot-melt adhesive leads to an increased heating-up rate compared with a corresponding dry hot-melt adhesive without said component contains with a view to universal application with highest possible activatability and constant property characteristic as microwave-activatable component electrically conductive substances with an electrical conductivity higher than that of the dry hot-melt adhesive without said component. Provided as electrically conductive substances are in particular carbon fibres, carbon black, graphite, antistatic agents and metal particles, either on their own or in mixtures adapted to the use. Hot-melt adhesive coatings or self-supporting hot-melt adhesive films having these additives have a heating-up rate by microwaves which is greater by a factor of up to 400 than that of conventional microwave-activatable adhesives.
    Type: Grant
    Filed: November 4, 1988
    Date of Patent: March 6, 1990
    Assignee: Uzin-Werk Georg Utz GmbH & Co. KG
    Inventors: Horst D. Hellmann, Roland Krieger
  • Patent number: 4892763
    Abstract: The invention relates to fiber glass reinforced resins suitable to be used for producing articles such as containers, bottles and the like by stretch-blowing, and it relates also to the so obtained articles.The resins are mixed with from 0.3% to 5% by weight of glass fibers having a diameter from 5 to 20 microns and chopped to lengths such that the length to diameter ratio ranges between 50 to 1000.
    Type: Grant
    Filed: January 16, 1985
    Date of Patent: January 9, 1990
    Inventor: Diego Duse
  • Patent number: 4879430
    Abstract: Plastic web materials are provided which are selectively treated in a patterned manner with corona discharge. Methods for making and using such webs are provided. In one aspect, such a web is utilized as the inside surface of a container structure. During meat cook-in, such structure selectively in treated areas adhere to highly proteinaceous material cooked therein.
    Type: Grant
    Filed: May 14, 1987
    Date of Patent: November 7, 1989
    Assignee: Plicon Corporation
    Inventor: Kenneth Hoffman
  • Patent number: 4878980
    Abstract: Automobile protective side-molding (renamed Power Ridges for this application) can be retrofitted onto wave riding vehicles to improve rider control and maximum speed. They do this by redirecting a portion of the fluid flow causing generation of forces which hold the vehicle down and increase its forward thrust.
    Type: Grant
    Filed: January 7, 1979
    Date of Patent: November 7, 1989
    Inventor: Lewis P. Stedman
  • Patent number: 4868023
    Abstract: An article having a surface comprising an olefin polymer is marked with indicia using an ink comprising a binder capable of substantially complete cure at a temperature of about 100.degree. to 300.degree. C. for less than about 10 minutes and then heated to cure the binder. The indicia are permanent, e.g. are resistant to being rubbed off and are solvent resistant. Heat-recoverable marker sleeves having such permanent indicia are particularly useful for marking wires, e.g. in aircraft harnessing.
    Type: Grant
    Filed: October 2, 1987
    Date of Patent: September 19, 1989
    Assignee: Raychem Corporation
    Inventors: David Ryan, Lawrence D. Schwartz, Philip Wallis, Kenneth M. Winterstein
  • Patent number: 4868022
    Abstract: In a ribbon consisting of a cross-linked plastic which can be shrunk by the action of heat and can be placed in the manner of a collar (2a) around an elongated object (4), and after the connecting together of the edges (3a, 3b) of the ribbon, can be shrunk onto the object (4) by the action of heat. The edge regions (3a, 3b) of the ribbon consist of non-cross-linked plastic and a connecting together (5) of the ribbon edges (3a, 3b) is effected by fusion welding.
    Type: Grant
    Filed: August 14, 1987
    Date of Patent: September 19, 1989
    Assignee: Kabelmetal electro Gesellschaft mit beschrankter Haftung
    Inventors: Karl-Heinz Marx, Hermann-Uwe Voigt, Frank Patzke
  • Patent number: 4865895
    Abstract: This invention provides a marker sleeve assembly comprising a series of flattened tubular recoverable marker sleeves held by at least one longitudinal carrier strip which holds the sleeves in fixed spaced apart relationship extending laterally from the strip. In a preferred embodiment, this invention provides a marker sleeve assembly which comprises a pair of parallel longitudinal carrier strips the inner edges of which have two layers with adhesive means on the inside facing surfaces of the two layers. The ends of the flattened tubular recoverable marker sleeves are positioned between the layers and held in position by the adhesive means on the inside surfaces of said layers of the carrier strips. The flattened marker sleeves are spaced apart whereby a portion of each adhesive means on the inside surface on each said layer of each carrier strip alternately engages the ends of the flattened marker sleeves and the opposing adhesive means on the opposing surface of the opposing layer of that carrier strip.
    Type: Grant
    Filed: July 20, 1988
    Date of Patent: September 12, 1989
    Assignee: Raychem Corporation
    Inventors: Frank P. Vlamings, Yutaka Kawazoye, Erling Hansen, David W. Wessels
  • Patent number: 4865890
    Abstract: A protective sleeve comprising a sheet of sleeve-forming, chemically-dilated, elastomeric material which shrinks upon exposure to ambient air. The sheet has first and second opposed edges that can be brought into adjacency. The protective sleeve further includes a locking device comprising two locking members extending from the respective opposite edges of the sleeve. The locking members are formed of a material that is dimensionally stable upon exposure to air and substantially more rigid than the material from which the sleeve is made. The locking members provide a rigid locking surface which can adjoin the opposed edges of the sleeve to retain those edges in adjacency when the sleeve is positioned about a pipe, conduit, cable, or like member, and then exposed to ambient air to shrink around such a member.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: September 12, 1989
    Assignee: TTK Kenmark Corporation
    Inventor: Max Erlichman
  • Patent number: 4865892
    Abstract: A dimensionally recoverable article, preferably a heat-recoverable article, for providing an electromagnetic shield as a shielding layer which comprises an electrically conductive fabric. The fabric may be a non-woven fabric formed from electrically conductive fabrics or it may be a fabric that has been coated, for example with a metal, after it has been formed in order to render it electrically conductive.
    Type: Grant
    Filed: August 3, 1987
    Date of Patent: September 12, 1989
    Assignee: Raychem Corporation
    Inventors: Philip R. Winfield, Nigel R. Bates
  • Patent number: 4863769
    Abstract: Heat-shrinkable films suitable for packaging food articles such as frozen poultry, primal meat cuts, and processed meat products. In one embodiment, the film may be a biaxially stretched monolayer film of a very low density polyethylene copolymer. In another embodiment, the film may be a biaxially stretched multilayer film comprising a first outer layer of an ethylene-vinyl acetate copolymer, a core layer of a barrier film such as a polyvinylidene chloride copolymer or an ethylene-vinyl alcohol copolymer, and a second outer layer comprising a blend of an ethylene-vinyl acetate copolymer and a very low density polyethylene copolymer. The multilayer film is preferably made by coextrusion of the layers. The films for fabricated into bags useful for the aforementioned purposes. The bags have improved toughness.
    Type: Grant
    Filed: April 24, 1987
    Date of Patent: September 5, 1989
    Assignee: Viskase Corporation
    Inventors: Stanley Lustig, Nancy M. Mack, Jeffrey M. Schuetz, Stephen J. Vicik
  • Patent number: 4840987
    Abstract: A flame retardant heat-shrinkable tube comprising a crosslinked flame retardant resin composition which comprises:(a) 100 parts by weight of an ethylene/vinyl acetate copolymer having a vinyl acetate content of 20 wt % or more based on the total amount of the copolymer or 100 parts by weight of a resin mixture containing a polyolefin resin and an ethylene/vinyl acetate copolymer the resin mixture having a vinyl acetate content of 20 wt % or more based on the total amount of the resin mixture, and(b) from 150 to 250 parts by weight of magnesium hydroxide.
    Type: Grant
    Filed: March 18, 1988
    Date of Patent: June 20, 1989
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Yoshito Sakamoto
  • Patent number: 4829995
    Abstract: Disclosed is a barrier for medical dressings which is impervious to blood or other body fluids. The barrier may be joined or pre-attached to the top surface of a medical dressing. The dressing may then be handled by the barrier and applied to a wound. The barrier prevents blood and other body fluids from penetrating the dressing and contacting a health care worker or other individual who may be treating the patient.
    Type: Grant
    Filed: September 4, 1987
    Date of Patent: May 16, 1989
    Assignee: Aegis Medical Corporation
    Inventor: John R. Metters
  • Patent number: 4830895
    Abstract: A length of tape 3 is bonded to a heat shrinkable film 2, and the film 2 is weakened along the edges of a central portion of the length of tape 3. The film 2 is then wrapped around an article or articles, has its two opposite ends sealed together, and is heat shrunk around the article or articles causing access openings 6, 7 in the sheet in the weakened areas along the central portion of the tape that can then be used as a handle for the resultant package 1.
    Type: Grant
    Filed: July 21, 1987
    Date of Patent: May 16, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Emile C. Bernard
  • Patent number: 4820560
    Abstract: Disclosed is a swellable nonwoven fabric strip for a cable wrapping having a specific resistance of 3,000 .OMEGA..multidot.cm.sup.2 or less and a method for its manufacture. The strip is in the form of a fibrous flat material without perceptible layered construction, wherein the fibers are aligned mainly lengthwise of the strip and are 95 to 75 wt.- % in the form of viscose fibers and 5 to 25 wt.- % in the form of shrunken polyvinylalcohol fibers soluble in water beginning at 80.degree. C. The flat material is uniformly impregnated with a binding agent which under the action of water loses its ability to adhere. The strip contains swelling powder particles which swell upon the access of water but do not dissolve, the swelling agent being distributed in an amount of 20 to 40 g/m.sup.2. The strip is capable of swelling at the place of access of the water to at least 90% of its achievable thickness in approximately one minute.
    Type: Grant
    Filed: May 21, 1987
    Date of Patent: April 11, 1989
    Assignee: Firma Carl Freudenberg
    Inventors: Holger Buchwald, Ingrid Schaffert
  • Patent number: 4820557
    Abstract: Disclosed is a high abuse-resistance film suitable for making bags and pouches. The film has at least one layer comprising a linear copolymer of ethylene and an alpha-olefin with a density of about 0.935 g/cc or less. The copolymer has a comparatively lower I.sub.10 /I.sub.2 ratio than the corresponding ethylene/alpha-olefin with the same comonomer and essentially the same density and essentially the same melt index at condition 190/2.16.
    Type: Grant
    Filed: September 17, 1987
    Date of Patent: April 11, 1989
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Thomas C. Warren
  • Patent number: 4820561
    Abstract: A recoverable article comprises a recoverable fabric, means for rendering the fabric impervious, and a shaped liner. The assembly can be used to form a pressure resistant splice case for telecommunications cables.
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: April 11, 1989
    Assignee: Raychem Corporation
    Inventors: Kenneth B. Pithouse, Thomas A. Kridl, James T. Triplett
  • Patent number: 4816309
    Abstract: A composite material comprising a recoverable fabric and a polymeric matrix material may be recovered around a cable splice to protect it. The fabric may have multifilament glass fibres in one direction which may be provided with a continuous coating to prevent moisture that may travel along their length from travelling through the thickness of the composite.
    Type: Grant
    Filed: October 2, 1987
    Date of Patent: March 28, 1989
    Assignee: Raychem Corporation
    Inventors: Norman Hutt, Winfield P. Roland
  • Patent number: 4816326
    Abstract: A cross linked film fibre is made by slitting or splitting polymeric film. In a preferred embodiment the fibre is made into a fabric which is impregnated with a polymeric matrix material. The matrix is preferably also cross-linked, this being done at the same time, or separately from, cross-linking of the fibre. The preferred embodiment is particularly useful for enclosing a substrate.
    Type: Grant
    Filed: May 19, 1986
    Date of Patent: March 28, 1989
    Assignee: Raychem Corporation
    Inventors: Thomas P. H. Jones, Frank J. Lowe
  • Patent number: 4806402
    Abstract: There is disclosed a termination device which includes a dimensionally heat-unstable tubular member and a dimensionally heat-unstable insert. The insert is positioned within the tubular member and is in abutting relationship therewith. The termination device may further include a fusible insert or inserts which may be thermoplastic polymeric materials or solder or both. The dimensionally heat-unstable insert is recoverable and the fusible insert or inserts, if present, are meltable at a temperature used to recover the dimensionally heat-unstable tubular member.
    Type: Grant
    Filed: July 6, 1987
    Date of Patent: February 21, 1989
    Assignee: Raychem Corporation
    Inventor: Lajos J. Vidakovits
  • Patent number: 4804733
    Abstract: A heat shrinkable plastic sleeve having an inner surface deformed in circumferentially spaced portions by unequal amounts from its normal heat stable or unstable configuration so as to provide different stresses in the circumferential direction whereby uniformity of heating of the sleeve throughout its thickness can be observed during heat shrinking by observing the shrinkage of the sleeve at its ends. Also, a method of making such sleeve in which a sleeve of heat shrinkable material is placed on a mandrel having expandable fingers, the sleeve is heated and the fingers are radially expanded and the sleeve is cooled to provide the desired sleeve.
    Type: Grant
    Filed: July 6, 1987
    Date of Patent: February 14, 1989
    Assignee: Treficable Pirelli
    Inventor: Claude Bataille
  • Patent number: 4803103
    Abstract: A recoverable article comprises a fabric having zones of different or uniformly varying recovery forces or ratios. The fabric can be made impervious and used for environmental protection.
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: February 7, 1989
    Assignee: Raychem Corporation
    Inventors: Kenneth B. Pithouse, Thomas A. Kridl, James T. Triplett
  • Patent number: 4803104
    Abstract: A heat-recoverable wrap-around sleeve for pipe protection, with a patch-type closure.The patch is heat-stable and comprises two polymeric layers bonded together through, for example, an open mesh glass-fibre fabric. No separate adhesive is required.The hot modulus of one of the layers is low enough to enable it to bond to the overlapping edges of the wrap-around sleeve, and the hot modulus of the other layer is high enough to withstand installation temperature.This new patch is easier to install and requires less materials than prior art patches, and does not need to be bonded to the sleeve in such a distinct heating step.
    Type: Grant
    Filed: June 19, 1987
    Date of Patent: February 7, 1989
    Assignee: N.V. Raychem SA
    Inventors: Paul G. L. Peigneur, Yvo F. H. Leest, Jozef F. L. Van Beersel
  • Patent number: 4789578
    Abstract: The invention relates to protective waterproof membranous sheeting which will prevent the passage of water and corrosive salt solutions into structures.The protection membrane comprises a bituminous adhesive waterproof sheet 1, a flexible polymeric protection grid 2 and a release sheet 3. The waterproof sheet 1 may comprise a fibre core in a matrix of a polymer modified bitumen polymer. The protection grid is partially embedded in the waterproof sheet 1, and is formed with drainage channels 13,14 on each face, provided by ribs or strands 4 and 5 defining the grid. The aperture size of the grid may be up to about 10 mm across. A filter web may be fixed to the face of the grid.
    Type: Grant
    Filed: May 14, 1987
    Date of Patent: December 6, 1988
    Assignee: Premier Coatings Limited
    Inventors: David R. Twyford, Edward E. Hankins
  • Patent number: 4788089
    Abstract: Self-supporting helical heat-recoverable material provides easily installed insulating covering for wires and cables. The helical arrangement may be made by differential recovery of a two-layered tape of the heat-recoverable material around a cooled mandrel such that the inner tape layer recovers more than the outer. The inner layer may also serve as an adhesive layer or may carry an adhesive coating.
    Type: Grant
    Filed: March 5, 1986
    Date of Patent: November 29, 1988
    Assignee: Raychem Limited
    Inventor: Richard S. Skipper
  • Patent number: 4783353
    Abstract: A heat recoverable article comprises a fabric cover (2) which has an aperture (4) therein around the edges of which is clamped a rivet (2), fixed so as to prevent pull-out of the fabric fibres on recovery of the cover. The article is particularly suitable for use as a pressurized splice case since a valve can be passed through the aperture in the cover. The valve can be secured directly to the cover, or to a correspondingly apertured liner positioned within the cover.
    Type: Grant
    Filed: April 29, 1987
    Date of Patent: November 8, 1988
    Assignee: Raychem Corporation
    Inventors: Erwin De Bruycker, Henri Van Emelen, Robert Vanhentenrijk
  • Patent number: 4775567
    Abstract: A waterproofing laminate suitable for use in roofs, floors, or other surfaces where waterproofing is desired, comprises an elastomeric sheet secured to a modified bitumen layer and a release sheet secured to the modified bitumen layer. Certain preferred materials for use in the laminate are recited.
    Type: Grant
    Filed: October 24, 1986
    Date of Patent: October 4, 1988
    Assignee: Hyload Corporation
    Inventor: Alex W. Harkness