Preform Particularly Provided With Means To Provide Interlock With Shaped Material Patents (Class 264/274)
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Patent number: 4124676Abstract: A composite article having a first layer formed of one material and a second layer of a second material, said layers being mechanically bonded together by mating projections extending from one layer into cavities of said other layer, said cavities having inwardly diverging surfaces for receiving said projections to preclude axial separation of said layers. The disclosure also includes a process for the manufacture of such articles.Type: GrantFiled: September 29, 1976Date of Patent: November 7, 1978Assignee: Crane Packing Co.Inventor: Jerry Henzl
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Patent number: 4117071Abstract: The method of forming hollow concrete articles such as tanks which are cast in a mould around reinforcing metal, the mould being shaped to form a bottom and including an upstanding integral ridge which forms a mould for the inner lower portions of a wall subsequently formed on such bottom after the bottom is cast, characterized by an interlocking ridge at the join and by the absence of reinforcing metal at such join.Type: GrantFiled: May 11, 1976Date of Patent: September 26, 1978Inventor: James T. Hannah
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Patent number: 4114976Abstract: A contact retaining clip is fixed in an insulator cavity by the use of discontinuities around the clip which can be wedged or embedded in the insulator. Preferably a probe is inserted into the clip to expand it. The clip and/or the probe may be heated prior or during insertion or by heating after insertion of the clip but before expansion of the clip.Type: GrantFiled: April 18, 1977Date of Patent: September 19, 1978Assignee: International Telephone and Telegraph CorporationInventors: Gerald Joseph Selvin, Leland Wayne Oliver, Stephen Kazuo Yamamoto, Clarence Vaughn Hogan
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Patent number: 4110390Abstract: 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.Type: GrantFiled: October 18, 1976Date of Patent: August 29, 1978Assignee: W. R. Grace & Co.Inventors: Tyler K. Olcott, Robert M. Miller
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Patent number: 4108937Abstract: Hollow articles are made from a cylindrical preform by first elongating the preform to reduce its diameter and then blowing the elongated preform in a blow mold to produce the completed article, which is thus biaxially oriented.Type: GrantFiled: February 20, 1976Date of Patent: August 22, 1978Assignee: Carnaud Total InterplasticInventors: Pierre Martineu, Jean-Francois Gregoire
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Patent number: 4109224Abstract: A precision injection-molded form for an inductance coil comprises a cylindrical core member having a surface of relatively low dimensional precision, and a thin plastic layer molded over the surface to provide a surface of high dimensional precision for supporting the windings of the coil. Metal insert-members having threaded axial bores and radially extending wing portions are provided at either end of the core to establish electrical contact with the winding and a mounting capability for the assembly. The coil form is formed by injection molding techniques and apparatus which provide for axial compression of the assembly prior to molding to obtain a predetermined longitudinal dimension, and for equalization of forces exerted during molding to prevent longitudinal deformation.Type: GrantFiled: August 5, 1977Date of Patent: August 22, 1978Assignee: American Antenna CorporationInventor: James P. Liautaud
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Patent number: 4106658Abstract: A heat retention individual serving platter has a stainless steel tray-shaped insert integrally attached to and supported on a rigid nylon filled foam underlying base. The insert is formed with a downwardly turned edge having an outwardly extending locking portion which extends into the plastic material of the base and which locks the insert in place.Type: GrantFiled: June 6, 1977Date of Patent: August 15, 1978Inventor: Richard N. Brandon
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Patent number: 4101624Abstract: Disclosed is a method of casting silicon metal. Silicon metal expands upon solidification. According to the disclosed method a void volume of from 1 to 10 percent of the silicon metal, basis molten silicon metal, is established within the molten silicon metal. The void volume is capable of being decreased in volume upon the solidification of the silicon metal. In this way, the increase in volume of the silicon metal upon solidification is offset.Type: GrantFiled: March 6, 1974Date of Patent: July 18, 1978Assignee: PPG Industries, Inc.Inventors: Harlan B. Johnson, Aleksandrs Martinsons, Cletus N. Welch
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Patent number: 4096216Abstract: A microfiche structure consisting of a laminate of an opaque, apertured web sandwiched between two transparent sheets. The transparent material partially extends into each aperture to thereby define, for each aperture, an optical doublet. The laminate may be continuously formed by compression, as by rolls.Type: GrantFiled: May 12, 1977Date of Patent: June 20, 1978Assignee: Izon CorporationInventor: George J. Yevick
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Patent number: 4093249Abstract: The invention provides ice skates and methods of making ice skates which have a body of a synthetic plastic material and a steel blade. The body includes an upper portion for attachment to the sole of a suitable boot and the blade has an upper portion enclosed in the body and a lower portion projecting from the body. The blade and body combine to define a localized and discrete anchor structure which locks the blade and body to one another, and the blade has a non-interfering upper surface. This surface allows the body to move freely other than at the anchor structure as the body moves longitudinally of the blade thereby limiting stress build-up in the body caused by shrinking. Mechanical fastening devices are used after shrinking to further hold the blade in the body.Type: GrantFiled: December 20, 1976Date of Patent: June 6, 1978Inventor: Alan F. Chambers
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Patent number: 4091068Abstract: A hardenable material such as epoxy is placed between a circuit board edge portion and a recessed channel of a keeper member mounted on a base. The epoxy fills the space between the channel walls and the board edge portion and immobilizes the board relative to the base once it hardens. This eliminates the movement of the circuit board relative to the base. Release agent may be coated on the edge of the circuit board and the recessed channel walls of the support base so that when required, the printed circuit board can be readily and non-destructively removed from the base.Type: GrantFiled: May 13, 1976Date of Patent: May 23, 1978Assignee: Motorola Inc.Inventor: Joseph Walter Karas
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Patent number: 4088156Abstract: An improved flexible conduit assembly comprising a flexible conduit including an inner tube of synthetic resin, a plurality of wires wound helically about the inner tube, an outer casing enclosing the wires and the inner tube and a motion-transmitting wire core element, and an improved holder wherein a resilient and plato-resistant end anchor obtained by reversely bending the wires is embedded by injection molding synthetic resin against an end of the conduit, thereby making possible remarkably strong resistance against a pulling force.Type: GrantFiled: August 2, 1976Date of Patent: May 9, 1978Assignees: Oiles Industry Co., Ltd., Chuo Spring Co., Ltd.Inventors: Shinsuke Kubo, Hiroyuki Kuzunishi
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Patent number: 4079500Abstract: Method of reinforcing concrete pipe in a rotary molding method using a wire reinforcing cage having a helical strand disposed about its exterior to resist torsional forces on the cage during molding, the cage being formed from a flat sheet.Type: GrantFiled: November 20, 1975Date of Patent: March 21, 1978Assignee: Wilbur E. TolliverInventor: Wilbur E. Tolliver
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Patent number: 4076777Abstract: Each one of a plurality of sector-shaped form members for a reinforced concrete or postensioned roof supported by a circumscribing wall, footing, columns or the like of a large building structure has an eyebolt located near its center of gravity to permit raising and lowering the form. The forms are lifted by this eye and successively positioned with their wide ends supported by brackets fastened to the circumscribing walls, footings, or columns and supported near their narrow ends by a central staging structure. If the building structure has circular walls or columns for supporting the roof, a pivoted station at the wide end of each form member provides a work platform for access to the bracket fastening means. When all of the forms are in place, their narrower ends define an opening which is centrally located. The forms are then covered by a layer of reinforced concrete. Holes are left in the roof at each eyebolt.Type: GrantFiled: February 16, 1977Date of Patent: February 28, 1978Inventor: Vladimir Petrovitch
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Patent number: 4075272Abstract: A method of mounting steps on the inner wall surface of a manhole section comprising implanting the steps in the section while the same is still green and following removal of the inner form but before removal of the outer form, positioning each step in confronting relation with the manhole section and thereupon smoothly and uniformly, without vibration and hammering, pushing the step into the concrete and compacting the concrete around the implanted step. The apparatus may be portable and shifted into the manhole section through an end thereof after the inner form has been removed but prior to removal of the outer form, and positioned against the base ring at opposite inside diameters thereof and engaging the outer form at the top of the manhole section and while thus engaged urging the step into the manhole section as aforesaid. Alternatively the apparatus may be stationary and the manhole section temporarily moved thereto and supported thereon during step implanting.Type: GrantFiled: April 16, 1976Date of Patent: February 21, 1978Inventor: Edward P. Washabaugh
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Patent number: 4069289Abstract: A method of moulding an element of an insulating material, such as a thermosetting plastics material, on a bimetal strip in which the bimetal strip is clamped in an injection mould by narrow clamping jaws disposed on either side of the mould cavity in the longitudinal direction of the bimetal strip. The width of the clamping jaws is such as to enable the remaining portions of bimetal strip to bow freely in response to heat present in the injection mould.The bimetal strips may be processed individually or as a group formed from a blank, the individual bimetal strips in the group being transversely joined to each other.Type: GrantFiled: April 13, 1976Date of Patent: January 17, 1978Assignee: Ellenberger & Poensgen GmbHInventors: Fritz Krasser, William F. Sell
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Patent number: 4067093Abstract: A piston and cylinder assembly and a method for manufacturing the piston assembly. The piston assembly includes a circular integral piston. A glass-filled plastic bearing material is disposed completely annularly about the piston and extends entirely between end faces of the piston. The plastic bearing material provides a bearing surface for sliding engagement with an inner surface of a cylinder of the cylinder assembly. An annular groove extends through the plastic bearing material and into the piston between the end faces. The piston includes a central bore which is concentric with the groove and the outer circumference of the plastic bearing material. The method for manufacturing the piston assembly includes the step of disposing the piston on a positioning pin which extends into the central bore and disposing the piston in an enclosed mold cavity which is defined by a mold.Type: GrantFiled: January 7, 1977Date of Patent: January 10, 1978Assignee: Dynamic Seals IncorporatedInventors: Roger R. Schumacher, William Olson
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Patent number: 4067947Abstract: A process for fabricating a knife handle incorporating a decorative embedment upon a background of a different color than the knife handle. The handle is formed with a cavity having bottom and side walls and bounded by a lip which is raised from the outer surface of the handle. An undercut is made in the sides of the cavity, after which a plastic sealing material is applied to the bottom and sides of the cavity, in liquid form. A second layer of liquid plastic containing a dye of the desired background color is then poured into the cavity and allowed to harden, and the embedment is placed thereon. The cavity is then filled in one or more steps by a transparent plastic material. After hardening and curing of the plastic, the outer edges and surface are ground and polished to the final appearance.Type: GrantFiled: December 27, 1976Date of Patent: January 10, 1978Assignee: Camillus Cutlery Co.Inventor: Nilo M. Miori
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Patent number: 4065540Abstract: A form into which concrete is to be poured has rectangular rests on its bottom for placing thereon the outer frame of a sash window or the like. The outer sash frame is secured to the rests by means of several spaced-apart fixtures arranged on the inside of the rests. Concrete is then poured into the form, and upon its solidification, the precast concrete panel is withdrawn from the form with the built-in outer sash frame. Each fixture comprises upper and lower holders that can be actuated manually into and out of engagement with the upper and lower flanges, respectively, of the outer sash frame on the rests.Type: GrantFiled: October 17, 1975Date of Patent: December 27, 1977Assignee: Yoshida Kogyo K.K.Inventor: Eiryo Okami
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Patent number: 4064472Abstract: A miniature inductor comprising a sheet metal frame having a slot that divides the frame into two separated halves, each half having a pair of upstanding tabs and a pair of inclined tapered flanges. A plate of insulating material extends across the slot and is held in position by the tabs, while a bobbin lies on the insulator and has its ends attached to the flanges. A mass of plastic encapsulates all of the components except for the bottom surfaces of the frame halves which serve as terminals.Type: GrantFiled: April 8, 1976Date of Patent: December 20, 1977Assignee: Vanguard Electronics Company, Inc.Inventors: Shelly J. Gunewardena, Leslie P. Glick, Yoshinobu F. Sakihara
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Patent number: 4060581Abstract: A composite burial vault is provided having a hollow liner constructed of a synthetic plastic resinous material which is filled with concrete. In constructing the burial vault, the liner is constructed from thermosetting resinous material in any conventional method. While the liner is still wet, aggregate is applied to the surface of the liner by a flocking gun or the like. Concrete is then poured between a mold and the treated surface of the liner where it forms a mechanical bond to the coarse aggregate coating on the liner.Type: GrantFiled: November 8, 1974Date of Patent: November 29, 1977Inventors: David L. Darby, James W. Darby
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Patent number: 4051591Abstract: A method of assembling a floatation unit wherein the unit is formed of a monolithic cell including a plurality of support rods passing therethrough to support the framework of a floating structure. The supporting rods are installed after the sealed unit is formed, by threading the elongated rods from one side to the other of the cell walls. This is accomplished by use of a guide rod, a threaded support rod which is threaded between oppositely disposed, bushing members adapted to receive the support rod. The guide rod is first passed through opposing bushings engaging the support rod as it is fed back through the bushing members, the guide rod providing a means by which the support rod can freely enter the oppositely disposed, bushing member positioned within the sealed wall of the cell.Type: GrantFiled: December 20, 1976Date of Patent: October 4, 1977Inventor: Thomas L. Thompson
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Patent number: 4049756Abstract: Method for making a microfiche structure consisting of a laminate of an opaque, apertured web sandwiched between two transparent sheets. The transparent material partially extends into each aperture to thereby define, for each aperture, an optical doublet. The laminate may be continuously formed by compression, as by rolls.Type: GrantFiled: October 16, 1975Date of Patent: September 20, 1977Assignee: Izon CorporationInventor: George J. Yevick
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Patent number: 4044455Abstract: A printing hammer unit is produced by forming a group of hammers having hammer portions secured to resilient members of electrically conductive material connected together by connecting portions and also forming a base integrally secured to the resilient members at locations thereof spaced apart from the hammer portions, and by removing at least a part of the connecting portions to break the electrical connection between at least one of the resilient members secured to the hammer portions and the other resilient members.Type: GrantFiled: May 28, 1976Date of Patent: August 30, 1977Assignees: Canon Kabushiki Kaisha, Canon Denshi Kabushiki KaishaInventors: Satoshi Watanabe, Atsuo Tsunoda, Takeshi Kimura, Hitoshi Narita
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Patent number: 4041031Abstract: Method of making protective headgear including forming a peak or visor portion and thereafer injection molding a fiber-filled resin onto the peak portion to form a shell portion, the shell portion resin containing 10-40% by weight of fibers at least 5 mm in length.Type: GrantFiled: December 6, 1974Date of Patent: August 9, 1977Assignee: Imperial Chemical Industries LimitedInventor: Peter John Robert Heasman
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Patent number: 4038359Abstract: A shaft seal of the type including a metal case and a polytetrafluoroethylene sealing element, is provided with an auxiliary sealing lip by providing a radial flange of the metal case with a plurality of circumferentially spaced-apart apertures therethrough and molding an annular filler ring of synthetic rubber in the space between the sealing element and the metal case such that the rubber also flows through the apertures to the other side of the radial flange of the metal case and forms an auxiliary lip there. The filler ring chemically bonds to the metal case and mechanically bonds to the sealing element to lock the sealing element in place while also forming an auxiliary lip.Type: GrantFiled: January 27, 1975Date of Patent: July 26, 1977Assignee: Garlock Inc.Inventor: Darrell D. Pendleton
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Patent number: 4031601Abstract: A method of fabricating and mounting a fiberglass fan blade of predetermined configuration which includes the steps of producing a metal hub having a dovetail slot in one end thereof and also having a bore extending from the other end thereof into said slot, assembling a plurality of layers of resin-impregnated fiberglass sheet in superposed relation forming a blade blank of predetermined dimensions, each of said layers including a blade portion and a root portion of a width at least equal to the diameter of said hub, interleaving additional pieces of the fiberglass sheet with the root portions of said layers to increase the thickness of the resulting root portion of the blank to approximately the configuration of the hub slot, inserting the root portion of the blank into the slot, placing the assembled blank and hub in a mold which includes cavities for the blank and the hub and a shoulder at the inner end of said hub cavity, heating the mold until the resin substantially liquifies while maintaining the oneType: GrantFiled: July 30, 1976Date of Patent: June 28, 1977Assignee: Dayton Scale Model CompanyInventors: Norman T. Staub, Anthony F. Staub
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Patent number: 4031605Abstract: A fluid polymeric ablator liner is cast onto the inner surface of a ramjet combustion chamber which has been prepared with a screen liner substrate. A split mold is inserted through the nozzle and assembled inside the chamber allowing a thin layer of ablator to be cast and cured on the dome and nozzle regions of the combustion chamber.Type: GrantFiled: August 5, 1976Date of Patent: June 28, 1977Assignee: The United States of America as represented by the Secretary of the NavyInventors: Harold Thompson Couch, Leonard Selwyn Cohen, Lawrence Joseph Coulter
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Patent number: 4028459Abstract: Method for applying cover or cladding elements of heat shrinkable plastics material upon the externally screw threaded metal necks of dispensing containers such as toothpaste tubes comprises for mounting a succession of containers and presenting them at an insert applying station having means for advancing the tubular open end of a continuous length of synthetic plastics tubing toward a positioned container neck and for operating upon the leading end of the tubing to separate therefrom successive cover or cladding elements of desired length and dispose each on a container neck prior to a heat shrinking operation for permanently securing the elements upon the threaded necks.Type: GrantFiled: April 25, 1975Date of Patent: June 7, 1977Assignee: Colgate-Palmolive CompanyInventor: Dusan S. LaJovic
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Patent number: 4021518Abstract: A method of forming a two-dimensional array of reinforcement elements completely encapsulated in a thermoplastic material. The reinforcement array is supported above a vacuum forming table on a plurality of pegs moveable upwards from the surface of the table, a sheet of hot thermoplastic material is positioned over the reinforcement array, and a vacuum is applied through the table to draw the thermoplastic material down and around underneath the reinforcement. The pegs are then retracted to a position substantially flush with the surface of the table once the thermoplastic material is capable of supporting the reinforcement, the vacuum then drawing the thermoplastic material around and underneath the reinforcement and to those parts of the reinforcement above the pegs. The thermoplastic material is then allowed to cool and set.Type: GrantFiled: January 14, 1975Date of Patent: May 3, 1977Assignee: Bridgend Investments LimitedInventor: Herbert J. Sharp
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Patent number: 4016230Abstract: The invention relates to the production of an article such as a pallet by a vacuum moulding technique in which a substantially two dimensional array of reinforcement elements is supported above a vacuum forming table on a first section or sections of said table movable upwards from a second section or sections of said table, a hot sheet of thermoplastic material being positioned over said reinforcement array and drawn down and around underneath said reinforcement by the application of a vacuum applied through said second section or sections, said first section or sections then being retracted to a position substantially flush with said second section or sections once said thermoplastic material is capable of supporting said reinforcement above said second section or sections and said vacuum then drawing said thermoplastic material down and around underneath said reinforcement elements above said first section or sections.Type: GrantFiled: January 14, 1975Date of Patent: April 5, 1977Assignee: Brigend Investments LimitedInventor: Peter Michel
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Patent number: 4011819Abstract: Hoop stresses are relieved to eliminate the formation of cracks produced ing the molding of a thermoplastic fitment cover about a support ring structure. Heated plastic is directly molded about the support ring to form any desired cover shape. Hoop stresses created in the cover as the fitment shrinks upon cooling are relieved by means of an interfacing cushion of elastomer. Variation in elastomer configuration provides the flexibility of allowing the elastomer to be "snapped-on" or to be directly molded onto the support ring.Type: GrantFiled: March 3, 1976Date of Patent: March 15, 1977Assignee: The United States of America as represented by the Secretary of the NavyInventor: Hyman Kessler
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Patent number: 4010794Abstract: In a die casting technique, a first element is die cast with a cavity formed by a core, the first element having an interlocking surface such as a projection or shaped aperture. The core is then removed, and a second element is cast to extend into alignment with the cavity, employing the interlocking surface of the first element for a portion of the die in the formation of the second element. The second element is thereby interlocked with the first element to form a unitary article. The unitary article may be in the form of a hanger adaptable for use in extending a cord for suspending an object. The hanger has a body portion with a hole extending therethrough, one end of the hole being enlarged for receiving and holding therein the knot of a cord. A loop shaped portion of the hanger extends over the enlarged end of the hole. The loop shaped portion is rigidly affixed to the body portion, and serves as a hook.Type: GrantFiled: January 22, 1976Date of Patent: March 8, 1977Assignee: Coats & Clark, Inc.Inventor: Ruediger Einhorn
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Patent number: 4009066Abstract: The opposite ends of at least one pair of tubular members, for instance steel tubes, are closed by inserts which have radial portions overlying end faces about the open ends of the tubular members. The tubular members are then axially aligned with each other while maintaining the radial portions of the inserts spaced from each other, whereafter the tubular members and the spacing therebetween are covered with a jacket of plastic material. Subsequently thereto, the jacket is severed intermediate the annular portions of the inserts to thereby obtain two discrete tubular elements.Type: GrantFiled: July 27, 1973Date of Patent: February 22, 1977Assignee: Benteler Werke AGInventor: Wilhelm Lachenmayer
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Patent number: 3990136Abstract: There is provided a method for producing revolving parts, such as sprockets, gears and pulleys, for light loads. A metallic annular member formed with notches in its inner periphery is mounted on a bearing. A boss is molded on each side of the annular member by use of a mold to secure the annular member to the outer race of the bearing. Engaging means formed in the outer periphery of the outer race of the bearing serve to make the annular member integral with the outer race.Type: GrantFiled: October 6, 1975Date of Patent: November 9, 1976Assignee: Wada Seiko Kabushiki Kaisha (Wada Seiko Co., Ltd.)Inventor: Tadashi Hishida
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Patent number: 3991152Abstract: To form winding slot plugs in a dynamoelectric machine armature, viscous uncured plastic is fed onto the cylindrical surface of the armature core, intermediate its ends, while the armature is rotated in contact with a paddle that wipingly forces the plastic into the winding slots. Preferably this is done simultaneously with coating the windings. The viscous plug material comprises the same plastic used for coating the windings, but admixed with enough inert powered material to be nonflowing.Type: GrantFiled: March 5, 1975Date of Patent: November 9, 1976Assignee: Briggs & Stratton CorporationInventors: John D. Santi, Edward A. Boyd
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Patent number: 3987142Abstract: A flexible baby soother comprising a tubular component defining a teat and a handle portion and a flange forming a shield moulded to the tubular component at the junction between the teat and handle portion.Type: GrantFiled: September 27, 1974Date of Patent: October 19, 1976Assignee: Lewis Woolf Griptight LimitedInventor: Eric Kenneth Hurst
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Patent number: 3984904Abstract: The invention provides a hollow core filled piston including core retaining means for mechanically interlocking and retaining a core of filler material within the piston against angular and axial displacement. The piston includes a hollow skirt portion defining a stepped-bore cavity, and retaining means for retaining a core of filler material within the cavity comprising a plurality of annular projections formed from the shoulder between the stepped bores. The invention further provides a tool for cutting and displacing segments of the shoulder to form the annular projections.Type: GrantFiled: November 27, 1974Date of Patent: October 12, 1976Assignee: Caterpillar Tractor Co.Inventor: Charles H. Schlecht
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Patent number: 3983205Abstract: Grilled flooring and stairways are made by moulding unsaturated polyester D.M.C. round metal reinforcing bars which, during moulding, are located in the mould on a plastics support.Type: GrantFiled: May 16, 1974Date of Patent: September 28, 1976Assignee: The British Petroleum Company LimitedInventor: Joseph Edward Barrett
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Patent number: 3971837Abstract: A composite foamed synthetic resin bowling pin is formed by first placing a base support element composed of a disc element and having a central sleeve with a hollow reinforcing tube secured thereto and an annular collar with an outwardly extending transverse flange thereon of lesser diameter than the disc element in one end of an undesired mold cavity. The peripheries of the disc elements and flange are disposed in recesses in the mold cavity wall. A foamable thermosetting resin reaction mixture is cast in the mold cavity and foamed and cured. The resulting assembly is then inserted in second mold of larger diameter and of the size of the final product. A molten thermoplastic resin is then introduced into this second mold cavity to form a thermoplastic shell on the assembly and which shell is interlocked with the collar on the base support element.Type: GrantFiled: September 10, 1973Date of Patent: July 27, 1976Inventors: Tadashi Hasegawa, Tetsuo Yamaguchi
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Patent number: 3969474Abstract: 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.Type: GrantFiled: September 10, 1971Date of Patent: July 13, 1976Inventor: John R. Gaug
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Patent number: 3961011Abstract: Netting, made by bonding together crossing strands consisting of or containing thermoplastic material by means of individually moulded masses of thermoplastic material, is given enhanced bond strength by compressing the crossing strands together within the die cavities employed for moulding the thermoplastic masses. The improvement is particularly marked in the case of netting made from braided strands, for example of nylon, and intended for use as cargo nets. The compression may be applied by a pressure member, for example a fluid-actuated piston, mounted within the die. If desired, a pair of counteracting pistons can be used. After compressing the strands, the pistons may be withdrawn before the thermoplastic material is introduced or may be forced back by the entering thermoplastic material.Type: GrantFiled: April 9, 1974Date of Patent: June 1, 1976Inventor: Anthony Bramley
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Patent number: 3961006Abstract: A flat composed of a flat body with a flexible covering fastened thereto and having a plurality of outwardly extending card wires distributed across the covering, for use in carding machines, is produced by disposing such a flexible covering against the outer surface of a cylinder with the outwardly extending wires directed toward the cylinder surface, the outer surface of the cylinder being shaped to define the desired contour of the array of card wire tips; pressing the flexible covering against the outer surface of the cylinder for causing the array of card wire tips to conform to the shape of the outer surface of the cylinder; disposing an associated flat body at a distance from that surface of the covering which is directed away from the cylinder; and filling the region between the flexible covering and the rigid body with a hardenable plastic mass and permitting the mass to harden and to become firmly attached to the flat body and to the covering.Type: GrantFiled: November 12, 1974Date of Patent: June 1, 1976Assignee: Fried. Krupp Gesellschaft mit beschrankter HaftungInventors: Curt Brandis, Peter Muller
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Patent number: 3949531Abstract: A hollow cored concrete slab is the product of the method which includes casting a base layer of concrete into a suitable form. Placing precast concrete channel members in transversely spaced relation on the freshly cast base layer with the flanges of the members in contact with the base layer and the webs of the members in spaced relation from the base layer. Casting an upper layer of concrete onto the fresh base layer and around the channel members and striking the upper layer in spaced relation above the channel members so that the upper layer of concrete covers the webs of the channel members to a given depth. The slab is then cured with the channel members remaining a structural part thereof and providing for the transversely spaced hollow cores therein.Type: GrantFiled: April 18, 1974Date of Patent: April 13, 1976Inventor: James L. Fanson
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Patent number: 3943021Abstract: A circuit plane or "board" includes a plurality of optical-micro-circuit device sockets with optical interface windows around the periphery of each socket. Each socket is adapted to receive a wafer or like component which comprises an electrical micro-circuit having optical input and output devices at the periphery of which register with the interface windows of the socket. The windows are optically interconnected with optical interface windows of other sockets or with optical terminals along the edge of the "board" by means of optical fibers embedded in a potting material typically sandwiched between two thermally and electrically conductive plates. Operating power for the circuits is applied to the conductive plates to which the micro-circuits are electrically coupled. A plurality of circuit boards so formed can be stacked on one another and optically coupled by means of light transmitting end connectors including optical fibers therein to form a complete data processing system.Type: GrantFiled: June 25, 1973Date of Patent: March 9, 1976Inventor: Richard W. Lindsey
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Patent number: 3937780Abstract: This invention relates to a method of forming a locking ring for the closure plug of a pressure vessel for storing fluid under pressure and particularly of the type having a deformable partition such as a bladder therein. The closure plug has a flanged inner end of diameter slightly less than the diameter of the port of the pressure vessel into which it is to be inserted and the locking ring normally is of greater diameter than said port and is foldable for insertion through said port so that it may then be restored to its original shape to encompass the closure plug and restrain outward movement thereof from such port.Type: GrantFiled: May 3, 1974Date of Patent: February 10, 1976Inventor: Jacques H. Mercier