Abstract: A rapidly curable phenol-formaldehyde resin is provided in the form of an emulsion which has particular utility in panel board production, particularly waferboard production.
Type:
Grant
Filed:
April 14, 1975
Date of Patent:
April 12, 1977
Assignee:
Cor Tech Research Limited
Inventors:
Ramesh C. Vasishth, Pitchaiya Chandramouli
Abstract: Apparatus for manufacturing large, disposable specialty drapes such as laparotomy sheets. Strips of stock material are automatically drawn from a supply and glued together to form the required width. A reinforcement patch is attached and then a fenestration cut through the patch and the underlying stock material. Subsequently, the fenestrated stock material is cut off to provide the finished sheet. The work stations at which the reinforcement patch is applied, the fenestration cut and the finished sheet cut off are spaced so that these operations can be performed simultaneously on different sheets in a line. A control unit is provided to control these operations simultaneously.
Abstract: A method of building rubber articles, such as a pneumatic tire, and the resulting rubber article itself. The method particularly involves the preparation of a composite of a tacky, shaped, unvulcanized rubber stock having a selected, protective film overlay loosely adhered thereto. Such composites can particularly be comprised of tread and sidewall stocks to be adhered to an unvulcanized, rubberized, fabric-reinforced carcass for the purpose of building a tire which is subsequently shaped and cured. Optionally, at least a portion of the protective film overlay can be removed from the unvulcanized, shaped rubber stock prior to building the desired rubber article.
Abstract: A composite prepreg material comprising a carboxy-terminated polybutadiene, an epoxy novolak resin, a carboxylic acid accelerator and an epoxy catalyst. When reinforced with well known reinforcing fibers or filaments, the material is eminently suitable for use in the fabrication of structural composites.
Type:
Grant
Filed:
December 30, 1975
Date of Patent:
April 5, 1977
Assignee:
The United States of America as represented by the Secretary of the Air Force
Inventors:
Charles E. Browning, Theodore J. Reinhart, Jr.
Abstract: Volatile, organic solvent is removed from textile articles that are provided with thermosensitive fibers capable of visually indicating predetermined maximum temperatures. Textile articles, such as tufted carpet, are heated under conditions effective to evaporate the volatile organic solvent under prevailing pressure conditions, as indicated by the thermosensitive fibers which are woven or tufted directly into and form a part of the textile articles, to remove the solvent from the textile articles.
Abstract: Heater bars for a film sealing machine with traveling bands which grip and transfer heat to the film laminae, the heater bars having heat transfer slides spring pressed and guided for tilting in a horizontal plane against the bands and tiltable to accommodate variations in film thickness between the bands to continuously apply heat to all adjacent portions of the films traveling with the bands.
Abstract: A heat sealing unit for producing a heat sealed seam on plastic films wherein a plurality of fins made of thin ductile metal having good heat conducting properties are mounted on a thin flexible heating element. The heating element is in turn mounted on a resiliently compressible back-up pad. The fins are closely spaced and flattened against the heating element in overlapping relation so that they provide a relatively large heat sink and at the same time enable the unit to flex so as to conform to the contour of the plastic films to be heat sealed.
Abstract: An apparatus for applying glue to chips, fibers and the like of wood, bagasse and other cellulose containing substances, which comprises a substantially cylindrical mixing chamber in which a shaft rotates equipped with radially extending mixing and/or glue applying tools. These tools immerse with their head region partly into a ring of chip material rotating at a relatively high speed. The glue applying tools comprises a glue conveying passage which in the lower region of the glue applying tools communicates with a glue feeding conduit associated with the driving shaft and in its upper region has a glue exit opening. The upper section of the glue applying tool has a glue discharge passage extending in a direction opposite to the direction of rotation of the glue applying tool. The end region of the glue discharge passage has at least one glue discharge opening.
Type:
Grant
Filed:
July 17, 1975
Date of Patent:
April 5, 1977
Inventors:
Wilhelm Lodige, Fritz Lodige, Josef Lucke
Abstract: An integrated system for eliminating the vibrations generated in vehicular tires under cruising speed conditions by correcting the tire both for peripheral non-uniformities and for lack of symmetry. The system includes means for revolving the tire being corrected under conditions simulating the weight load placed on the tire in actual use as well as the centrifugal forces encountered when operated at a cruising speed of from 50 to 90 miles per hour, together with means for measuring both the magnitude and location of the forces generated by peripheral non-uniformities developed in the tire and also the magnitude and location of the forces generated by lack of tire symmetry.
Abstract: A machine of introducing sound-insulating members of a resilient material at predetermined places in concrete beams formed by a lower concrete element, preferably coffer-shaped, and an upper concrete element in the form of a slab. The machine comprises means to raise the upper element from the lower element so as to form therebetween a gap intended to receive the sound-insulating members, means to sense the vertical dimensions of said gap, means to cut off a piece of insulating material the vertical dimensions of which agree with those of the gap, means to apply an adhesive to said member, and means to position said member in the gap in the predetermined position. The invention ensures that the total thickness of concrete beams including such a sound-insulating layer is equal for all beams thus composed irrespective of the individual thickness of the discrete concrete elements.
Abstract: A device for forming lengths of adhesive tape into tubes including a mandrel having an axis and a multiplicity of radially outwardly projecting resilient bristles having tips defining at least the major portion of a periphery around the axis in the shape of a tube to be formed. The tape is wrapped around the periphery of the mandrel and the ends of the tape overlapped to form a tube having an axially extending seam. A ring is then pressed against one end of the formed tube to slide it axially off of the bristles and mandrel.
Type:
Grant
Filed:
August 11, 1975
Date of Patent:
March 29, 1977
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: Bonds are made between two work pieces by using foils exploded by electrical energy typically stored in a large capacitor. To increase the uniformity of the bond area, a foil having at least one slit cut in the direction of current flow is used. The foil strips separated by the slit are attracted together by the pinch effect when current is applied, tending to eliminate loss of foil through a jetting action during explosion. Platings are made by pressing the foil between the work piece and a plastic layer to which the foil does not adhere. In both bonding and plating, the capacitor is charged with energy sufficient to bring the foil just to its boiling point. This "tuning" is more efficient and minimizes heat and blast effects that might otherwise damage a small work piece.
Type:
Grant
Filed:
February 21, 1975
Date of Patent:
March 29, 1977
Assignee:
Bell Telephone Laboratories, Incorporated
Abstract: A method of making an electric conductor wherein a plurality of glass strands are coated with a thermally curable liquid dispersion of conductive particles and the strands are heated to thermally cure the liquid dispersion. The method includes grouping the wetted strands in a roving and winding the roving about rotating heated drums, which flattens the roving into a ribbon and cures the liquid dispersion on the strands. The conductive roving is spirally wrapped with a non-conductive strand into a cylindrical core and then encased in a semi-conductive overcoat.
Abstract: Apparatus for supporting a tire while being retreaded with a precured tread including sealing a tread and tire enclosing envelope adjacent the beads of the tire. The tire supporting rim is constituted by two coaxial tubular members with envelope sealing flanges, a first member of which is inserted axially in the second member, with the first and second members having around their circumference parts that can be connected to one another in a free and complementary fashion at the time said first member is inserted in said second member. Each of the tubular members have a plurality of grooves aligned in batches perpendicular to the axis of the tubular members with it being possible to lock the first member to the second member by partially rotating a disk housed in one of the aforementioned batches of grooves.
Abstract: A method and apparatus for the replication of thin film patterns. A stencil is fabricated of a material such as silicon by etching or epitaxially growing on the silicon wafer. The stencil is used as a shadow mask in molecular beam deposition of the thin film pattern. The technique provides high yields in the formation of relatively large scale thin film patterns.
Abstract: The invention disclosed sets forth a method and machine for forming a sleeve of a shrinkable, cellular polymeric material from a predecorated web. The web is processed to provide (1) a partial-depth slit along the longitudinal dimension, and (2) cross-dimension pleats. Predecorated shrunken neck labels are formed from the web for overlying the neck and closure of the bottle and including a pilfer-proof feature. Such a label is formed from the processed web by cutting a blank having the cross pleats therein and winding the blank on a mandrel to overlap the ends and seam the overlap to make a sleeve. The sleeve is stripped onto the top neck and over the closure of a bottle at room temperature to a label position and shrunken to a snug fit, the pleats absorbing wrinkles that occur in shrinking the material onto a "cold" bottle.The disclosure includes a novel machine for making the sleeve from a plastic web and placing it on the bottle.
Abstract: A method for forming lengths of adhesive tape into tubes including providing a mandrel having an axis and a multiplicity of radially outwardly projecting resilient bristles having tips defining at least the major portion of a periphery around the axis in the shape of a tube to be formed. The tape is wrapped around the periphery of the mandrel and the ends of the tape overlapped to form a tube having an axially extending seam. A ring is then pressed against one end of the formed tube to slide it axially off of the bristles and mandrel.
Type:
Grant
Filed:
August 11, 1975
Date of Patent:
March 22, 1977
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: A migration imaged member comprising an image pattern of material comprising a dye or a dye receptive material is contacted with a dye transfer member or a dye respectively to form a dye image on the dye transfer member or the imaged member respectively.
Abstract: A reinforced matting of melt-spun, interlooped, substantially amorphous and continuous synthetic thermoplastic filaments of which one set of filaments is applied with random penetration to a flat, latticed structure such as a fabric mesh or wire screen while another set of filaments may be added to form at least one and preferably several additional rows of interlooped filaments adhered to the first set of filaments carried by the latticed structure as a reinforcing member.
Abstract: A method of continuously producing clad composites is disclosed. The cladding is combined with a resin-wet reinforcement and pultruded through a forming and curing die in a single processing step.
Type:
Grant
Filed:
July 10, 1975
Date of Patent:
March 15, 1977
Assignee:
Bell Telephone Laboratories, Incorporated