Abstract: A rotary plug valve is formed which is of the type comprising a housing formed of a polymer and a rotary plug disposed in a through-passage of the housing. The plug is formed of a polymer and includes a bore selectively alignable with the through-passage to admit the passage of fluid. The plug valve is formed by forming the plug and attaching thereto a preformed polymeric shield by snap-fitting the shield onto the plug. The shield has an inner surface conforming to the periphery of the plug. The plug and shield assembly is positioned within a cavity of a mold. The cavity corresponds to the shape of the housing. A molten polymer is introduced into the cavity and intimately contacts the shield and forms the housing around the plug.

Abstract: The invention comprises solid particulate filter bodies having so-called "sloppy" plugging configurations in which clusters of mutually adjoining cell ends are plugged at the two end faces of a honeycomb structure such that the clusters at each end face adjoin or partially overlap one another and at least some of the cells of the structure are closed at both end faces while the remaining cells of the structure are closed at only one end face. Preferably "sloppy" plugging is accomplished by providing a pair of masks each having a plurality of opening extending therethrough which are sufficiently large to expose clusters of mutually adjoining cell ends and are positioned so as to partially overlap one another when the two masks are aligned opposing one another on opposite end faces of a honeycomb structure. A flowable plugging material charged through the masks plugs the clusters of cell ends at each end face.

Abstract: A method of coating a core sample in which a distillate such as petroleum jelly is applied to the exterior surface of the sample. A cylindrical mold is partially filled with a plastic mixture of hardenable epoxy resin and hardener therefor, and one end of the core sample is slowly inserted into the mold under a pressure which preferably is not more than about 50 pounds per square inch. In some cases the inserted end of the sample is pre-coated with the plastic mixture. As the insertion of the sample is continued, the mixture flows up the side of the sample and covers the opposite end. The coating is cured by maintaining it in the mold at room temperature for a period of time sufficient to enable the resin to set up and then by holding it at an elevated temperature for at least about eight hours. Upon the removal of the coated sample from the mold, the ends are cut off to expose the sample material.

Abstract: The invention is a flexible mask for use in charging a flowable material into selected cells of a honeycomb structure and is of particular utility in charging a sealing material into the ends of selected cells of such a structure during fabrication of solid particulate filter bodies and other selectively plugged honeycomb structures. The mask has a central body with a set of openings extending therethrough which allow passage of the flowable material through to the selected cells and a second set of protrusions extending from one of the surfaces of the mask which are used to align the mask to the end face of the structure and which extend into and sealably cover the cells which are not to receive the flowable material. The mask may be formed from a polymer, preferably an elastomer, using any of three disclosed die apparatuses.

Abstract: A method for making a panel adapted for mounting on a building, the panel being formed from a plurality of thin panels of a selected stone facing material, such as granite or marble, backed and interconnected by fiberglass-strengthened concrete underlaying the plurality of thin panels and covering and engaging anchor means mounted in the backs of the stone panels. The method of forming the building panel involves placing the granite or marble panels face down in a form, mounting anchor means in the backs thereof, and overlaying both the plurality of thin panels and the anchor means with a fiberglass-strengthened concrete mixture, and curing the mixture both within and without a support form.

Abstract: In accordance with the inventive method, a one-sided coated element, in particular a screen element, is provided with a bonding agent after being cleaned. Subsequently, form elements are inserted into the openings of the elements from the rear side thereof which completely fill the openings and extend therethrough. Thereafter, the coating is applied in a lesser thickness than the height of the protruding form elements. This assures that, with a comparably thick coating, openings of a predetermined geometry are created. For this purpose, a device is preferably used having bars which consist of adjacent, successive tapered , pyramid- or horizontal prism-like form elements. The form elements consist of an elastic material which taper into a sharp pointed edge. Thereby, the form elements may be easily installed and removed and the coating runs off the form elements during application, so that the openings are not covered up by the coating material.

Abstract: An improvement is disclosed in the matrixing process employed in the manufacture of molded records. The improvement consists of using an insert in the matrixing process which is secured to the center portion of the matrix to be duplicated prior to electroforming a replica on the surface of the matrix. Metal is then electroformed over the surface of the matrix and the insert to form the replica and the insert is thereafter used to apply force at the center portion of the replica to force it away from the matrix on which it is formed.

Abstract: A method and apparatus for manufacturing double-gear trains in which gears of double-gear trains are molded already in engagement with one another. Upper and lower gear molding cavities are formed in upper and lower molds between which is sandwiched an intermediate mold. Apertures are formed in the intermediate mold for molding shafts which join gear pairs. Thin wall dividing portions are provided between adjacent gears which are molded in engagement with one another. A molten resin introducing cavity is formed between an outer mold and the upper mold. Coupling pieces may also be molded simultaneously with the formation of the double-gear train.

Abstract: A method of preparing an inflatable pad for a face mask in which a former (3) is coated with a curable composition which is cured to provide an elastic air-impermeable sheath (4) of rubber or like polymer which does not adhere to the former, thereby defining an inflation chamber. The former comprises a sheet of flexible material, e.g. polymer foam and remains within the pad in use thereby avoiding the conventional operations of slitting the air-impermeable sheath, removing the former and resealing the air-impermeable sheath.

Abstract: A method of producing encapsulated coils includes positioning a coil of wire on a inner coil adjacent one end thereof, positioning a metallic ring on the opposite end of the coil and surrounding the coil with an outer mold having a closed bottom, a resinous material is introduced to encapsulate the coil and provide a reservoir of excess resinous material which is then cured and the shrinkage is accommodated by the excess material above the ring. The encapsulated coil, ring, and excess material are removed from the molds and the ring and excess material are separated using a hammer to produce a finished encapsulated coil.

Abstract: A detachable balloon catheter apparatus and method. The apparatus includes an introducer catheter which is attached at its trailing end to a source of pressurized fluid. The leading end of the catheter is attached to an inflatable balloon which may be inflated as the pressurized fluid is injected through the introducer catheter. A valve mechanism is positioned inside the assembled introducer catheter and balloon and the leading end of the valve mechanism is bonded to the interior of the balloon. As the balloon is inflated by the pressurized fluid, a forwardly directed lateral force is exerted on the valve mechanism so that it is pulled forward into fluid-tight engagement with the valve seat placed at the opening of the balloon. Once the valve mechanism is pulled into fluid-tight engagement so as to close off the opening of the balloon, further injection of the pressurized fluid serves to detach the inflated balloon from the introducer catheter.

Abstract: A method for constructing ball joints includes positioning a ball within a ball joint socket. Plastic-bearing material is then allowed to congeal in the socket while in contact with the ball. A positioning fixture maintains the ball in the desired spaced position in the socket while also maintaining a seal between the ball and the socket housing so that the bearing material may be pressurized as it congeals.

Abstract: The invention relates to a method for the production of a medical instrument, in particular a tube or catheter, with a balloon made of an elastomeric and/or thermoplastic material, comprising the steps of providing an inflation line for the balloon on or in one hose section and applying thereafter the cuff-shaped balloon with its two ends closely fitting and overlapping one outlet of the said inflation line. To render the production economical, a coat (3) of a parting compound is applied to the hose section (1) in the area where the balloon (10) is to be formed, whereafter the hose is sheathed by extrusion with a sheathing coat (5) of a thermoplastic or elastomeric material.

Abstract: An expandable member is disclosed that includes a molded body of elastomeric material with a core embedded therein. At least a portion of the core is not bonded to the body. A fluid conduit is provided through which fluid can be injected between the core and the unattached portion of the body to move the core and the unattached portion apart and expand the member.

Abstract: In the manufacture of a protective glove, there is provided a mold having two parts interconnected to be moved into open and closed positions. There is also provided an inner glove lining, and each part of the mold is covered with it. The mold, in closed position, is dipped in a bath of protective coating material, removed therefrom, and exposed to initial draining of an excess of coating material. Thereafter, the mold is opened and the draining is completed, while portions of the coating material are retained and gelled.

Abstract: An annular metal outer race with a concave bore is placed in an outer mold. A pair of coaxial annular inner molds are inserted into the outer race. Liquid plastic is flowed into an annular space between the inner molds and the outer race. The liquid plastic is allowed to solidify and shrink whereby a clearance between the plastic ball outside diameter and the outer race is provided.

Abstract: A method for making a dimensionally stable decorative floor covering product. A sheet is first formed, and this is then provided with a decorative design. A clear wear layer is applied thereon, mechanically embossed-in-register, and then the sheet is cut into a plurality of individual tile units.

Abstract: A process for producing a drawing stencil characterized in that a plastic border edging is applied, by a spray or injection molding, upon a preformed stencil sheet. A further feature disclosed is the use of a lubricated interface between a border edging and a stencil sheet, to relieve stress buildup and resultant distortion of the stencil.

Abstract: A method for manufacturing an opening device for a package is disclosed. The opening device comprises an outer wall portion an an inner layer of substantially gas-tight material, the outer wall portion including a first tearing notch defining an opening and a second tearing notch defining a grip tongue, and the outer wall and the inner layer being interconnected substantially over their total surfaces facing each other with the outer wall portion and the inner layer being separated within an area substantially under the grip tongue. The method comprises the steps of coating the inner layer with an adhesion preventing coating within an area corresponding to said grip tongue, and connecting the inner layer to the substantially rigid outer wall portion.

Abstract: A process for making and assembling a rotary regenerator comprising a ceramic core adapted to rotate upon its central axis and a ring gear surrounding the periphery of the core for purposes of driving the core rotatably including preparing and forming a yieldable compliant ring sandwiched between the ring gear and the periphery of the core to prevent stresses in the core caused by differential rates of expansion of the core and the ring during operation of the regenerator in a gas turbine engine and during processing of the regenerator and the regenerator drive ring.

Abstract: Spherical friction or sliding bearings are produced by first making a laminate from a layer of a thermosetting resin and a layer of material having a low friction coefficient. The thermosetting resin is used to impregnate a first web or fabric. The low friction coefficient material may be provided in the form of a further webbing or fabric, for instance, made of polytetrafluoroethylene. The thermosetting material may, for example, be a phenolic resin which is at this point of manufacture in its A-state and hence tacky. In order to permit the immediate further processing of the laminate with the thermosetting resin still in its tacky A-state, a dry adhesive film which neutralizes the tackiness, is applied to the laminate in sandwich formation which is then cut into pieces or strips of suitable size. The sandwich strips are then placed into a mold and pre-shaped and precision cut at room temperatures while the resin is still in its A-state.

Abstract: A plastic-like container liner having spaced apart ridges at the bottom of said liner has a non-adhering material positioned on the upper inner surface of each ridge. A lower container body is positioned into a female foaming fixture and an expanding exothermic foam is injected onto the inside bottom surface of the lower container body. A male foaming fixture having spaced apart recesses conforming to the ridges of the liner intimately receives the liner and urges the peripheral flat portion of the liner toward the bottom surface of the lower container body. The foam expands exothermally such that heat released by the foam causes the non-adhering material to flow. The expanding foam is bonded to the lower container body and to the portion of the liner not in contact with the non-adhering material. Resultingly, an integral insulated container is formed having projecting ridges on the bottom surface thereof which assist in resisting the shock of items dropped into the container.

Abstract: A solenoid and electric terminal heads are embedded in plastic by injection molding. Die faces accurately position and orient contact surfaces on the heads relative to the solenoid and contacts on the solenoid plunger, eliminating subsequent machining. The solenoid windings and lead wires are encapsulated by plastic injected in the molding process through openings in the coil casing. Portions of the lead wires outside of the casing and contact posts connected thereto are also embedded in the plastic. Injection molded walls guide axial movement of a rectangular contact member with the plunger and prevent its rotation out of alignment with the terminal heads. A fibrous washer compresses axially under the die force to compensate for cumulative axial tolerances of the solenoid and terminal heads for accurately positioning the bottom of the plunger opening relative to the contact surfaces on the terminal heads.

Abstract: According to the invention, electrically conductive paths are formed between the coil armor and the core laminations of dynamoelectric machines for inhibiting corona. This is achieved by injecting an uncured, semi-conducting, elastomeric material between the coil sides and the walls of the core slots by way of the air ducts in the core, and thereafter curing the material. The uncured material has a viscosity which enables it to be forced under pressure between the coil sides and slot walls by means of a pneumatically actuated gun assembly whose construction and operation are described in detail. The cured material has a resistance high enough not to form eddy current paths between laminations and yet low enough to conduct charge from the coil armor to the core. It is also capable of retaining its strength, elasticity, conductivity, etc., and remaining in place between the coils and core under vibrations, coolant flow, electric stresses, repeated temperature changes, etc.

Abstract: A molded plastic article having either a transparent window or a mirror insert therein is produced by molding a plastic mass around the insert with a layer of insulation or parting material interposed between the plastic mass and the insert.

Abstract: An end portion of a bundle of thread-like bodies to be set is dipped into a solidifiable liquid. At least a part of said bundle, adjacent to the predetermined level of the solidifiable liquid, is contacted with a specific liquid or gas which substantially prevents wicking of said solidifiable liquid along said thread-like bodies due to capillary action. The solidifiable liquid is not drawn up through the bundle beyond predetermined level of the solidifiable liquid, and solidified at the predetermined level.

Abstract: An end portion of a bundle of thread-like bodies to be set is dipped into a solidifiable liquid. At least a part of said bundle, adjacent to the predetermined level of the solidifiable liquid, is contacted with a specific liquid or gas which substantially prevents wicking of said solidifiable liquid along said thread-like bodies due to capillary action. The solidifiable liquid is not drawn up through the bundle beyond predetermined level of the solidifiable liquid, and solidified at the predetermined level.

Abstract: A demountable fishing rod is formed as a single tapering tube with a thick walled central portion, the tube is cut in two at the large end of the thick walled central portion to form a butt portion and a tip portion, the thick walled central portion is sized to receive a cylindrical sleeve which is glued over the sized portion to extend rearwardly beyond the tip portion, the tapering small end of the butt portion is sized and coated with a mold release agent, the sleeve has a molding material inserted therein, and the tapered end of the butt is held in the sleeve while the molding material hardens to provide a demountable joint.

Abstract: A method for coupling tubes. One tube has a female coupler member at one end and the other tube has a male coupler member that is inserted into the female coupler member so that the outer surfaces join along a regular path. Then wire is wrapped around the joined couplers.

Abstract: An elastomeric encapsulated chain wherein the individual links of the chain are covered with an elastomer suitably of polyurethane and in one embodiment the individual links of the chain are separated by a plug of elastomer to permit the chain to be pulled under tension to compress the elastomer plug.

Abstract: A method of forming a steel rule die for the high speed rotary cutting and creasing of foldable carton blanks, characterized by the repeat accuracy of the die forming process, simplicity of assembly and operation for rotary die cutting procedures, and ease of maintenance. In carrying out the process, the rules of the die to be formed are initially set in their final cutting or working position with their cutting edges against a precisely formed, cylindrically curved mold surface, locked in place by removable spacer blocks and furniture of a solid and rigid material, and then permanently bonded into a rigid base with the working edges exposed, upon removal of the spacer blocks, for die cutting operation when the base is mounted on the surface of a rotary press cylinder.

Abstract: A method and apparatus is disclosed for making a combined needle and catheter of the type in which the needle is used to lead the end of the catheter thereon into a body cavity and, after insertion, is withdrawn through the catheter with most of the catheter remaining in the body. To form the catheter, the needle is initially placed in an upright position with its pointed end downward and located within the orifice of a die wiper. Thereafter, a measured quantity of a viscous plastic material or fluid plastisol is applied to the die wiper on the side thereof opposite the pointed end of the needle and the assembly of needle, die wiper and plastisol is then inverted so that the die wiper falls by gravity and wipes a coating of fluid plastisol along the shank of the needle. When the die wiper has completed its traverse of the needle shank, the assembly is heated to solidify the fluid plastisol on the needle and thereby form a removable flexible catheter on the needle.