Abstract: The device comprises a handling arm (21) arranged inside the water box of the steam generator and permitting the assembly for fitting and withdrawing a plug (22) to be placed in the alignment of the tubes of the steam generator bundle. The device additionally comprises an endless screw (35) for moving the tubes in the axial direction, which is fastened to the handling arm (21), a support (44) fastened to the endless screw (35), movable in the axial direction, a linking member (51) carried by the support (44) for removable fastening to the plug body, and a sliding rod (55) actuated by a jack integral with the support (44). The rod (55) actuated by the jack permits, a thrust to be exerted on the plug held by the connecting member (51), in order to produce its extension and facilitate its withdrawal.
Abstract: A rolling mill for rolling strip in which one of its rolls serves both as a mill roll and as a gauge and/or profile measuring roll. The one roll has an outer sleeve for deflection under the rolling force and an internal stationary member for carrying a number of axially supported sensors for measuring the deflection of the sleeve and the rolling force to which the sleeve is subject, and control means for receiving signals from the sensors to produce a signal representative of the gauge and/or profile of the strip as it is being rolled in the roll bite of the mill.
Abstract: A method for removing sprinkler pipe from a field in which the sprinkler pipe is disposed in rows in the field with the sprinkler pipe in each row being formed as a sprinkler line by serially connected lengths of pipe. The method comprises grasping one end of the sprinkler line and pulling it from the field without entering the field along a line generally coaxial with the sprinkler line for a distance at least equal to the length of a section of sprinkler pipe. A length of sprinkler pipe is then disconnected from the line, and the next sprinkler pipe is grasped and the sprinkler line is pulled at least one additional pipe length without entering the field. That next length of sprinkler pipe is thereafter disconnected from the sprinkler line, and the procedure is repeated until the entire sprinkler pipeline has been removed from the field.
April 27, 1987
Date of Patent:
February 6, 1990
William D. Miller, Inc.
William D. Miller, Omar L. Stiff, Benardo Mercurio
Abstract: A gas fired condensing furnace comprising a multiple cell condensing heat exchanger is provided wherein each condensing heat exchanger cell has a condensing flow passage of serpentine shape formed from a single flat sheet metal blank. The condensing heat exchanger cell is formed to be compact in size and to minimize heating fluid side pressure drop therethrough. The condensing flow passage for each condensing heat exchanger cell provides high velocity fluid flow therethrough for increasing its heat transfer characteristics.
Abstract: A method and apparatus for machining fragile workpieces of any material, by placing the workpiece upon a convex support, tensioning the workpiece into coextensive engagement over the support, and moving a cutting tool away from an anchored end of the workpiece to establish transverse and longitudinal configurations at exposed sides of the workpiece when removed from the support.
Abstract: A mass interconnect system connects and disconnects one or more banks of electrical connectors to and from the electrical leads of a plurality of printed circuit cards supported at an opening in a mainframe card cage. The mass interconnect system includes: (a) a frame assembly supported by the mainframe card cage; (b) a plurality of retractable support members carried by the frame assembly; (c) arm means carried by the frame assembly, for moving the support members outwardly from the frame and inwardly toward the frame; and (d) module means for carrying the bank(s) of electrical connectors. The module means is detachably mounted to the support members such that the electrical connectors are aligned with and coupled to the electrical leads on the printed circuit cards in the mainframe card cage when the arm means is moved from a first position to a second position. A terminal block is also provided for housing and supporting the electical connectors.
Abstract: A self-loading controlled deflection roll is rotatably mounted with non-self-aligning bearings at either end to bearing housings which, in turn, are pivotally-mounted to support stands. The stationary support beam extending through the roll is pivotally-mounted in the same support stands. At one end of the roll, a drive shaft having a drive gear engaging a ring gear which is mounted on the end of the roll shell concentric with its surface is provided to rotatably drive the roll shell while simultaneously permitting lateral movement of the roll shell relative to the support beam during the self-loading phase of roll oepration.
Abstract: The wire rolling mill has a plurality of roughing stands, a cropping shears, a finishing block, a coiler with a coiler pipe and a coiler drive including a coiler motor and a coiler gear unit and a delivery conveyor for the finished wire deposited in coils. The wire rolling mill also has a controller with a computer which controls the cropping shears with a predetermined rolling program by a computer shear command. The cropping shears cuts away a cropped length from the rolled wire rod workpiece prior to entry in the finishing block defined in the computer shear command thus producing a wire head to be deposited in coils. The cropped length of the wire is put in line with the position of the coiler. The coiler is provided with a rotation angle position transmitter operating with digital pulses which is connected with the controller and whose angular position corresponds to the coiler pipe positions.
Abstract: An electrical connection of a terminal contact to an electrical conductor is crimped by applying compressive force to the right and left sides of the barrel of the contact but not at the center and not applying it directly toward the center, thus forming an "oblique" crimp. Such an oblique crimp can be formed using a punch die and an opposing anvil die each having a crimping surface with a central recessed relief area whereby the crimping surface does not compress the center of the contact barrel. On each side of the relief area is a substantial diagonal portion of the crimping surface, and outward therefrom is a transverse shoulder, both of which engage the contact barrel during crimping. This crimping is especially useful for contacts having closed or seamless barrel walls and also especially for crimping a slightly oversized barrel to a many-stranded conductor without an intermediate sleeve, and it is particularly useful where confined crimping is required.
Abstract: A quick, easy, and permanent inline repair of a ruptured pipe is accomplished by the use of one of a firmly of rigid covers shaped to cover the rupture and adhering the rigid cover in sealing relation over the rupture. A utility tool is disclosed that may be used to restore the expanded metal surrounding a rupture in a freeze burst copper water pipe to its intended position in line with the pipe before the rupture is covered with a rigid cover.
Abstract: The present invention constitutes an apparatus for assembling multiple electrical contacts and filler elements into an electrical connector. The apparatus includes a filler assembly for automatically installing filler elements into the holes within the electrical connector which are to be unoccupied by electrical contacts, and a guide assembly which is functional for assisting the operator in manually inserting the electrical contacts into the correct holes within the connector by providing a visual indication of the holes into which the contacts should be inserted. The filler and guide assemblies operate on connectors held into position on a turntable-like indexing plate which allows the connectors to be rotated alternatively into position with respect to each of the assemblies. The filler assembly includes one or more filler element inserter tools which are adapted for inserting filler material from strands of such material into the holes within the connectors so as to form installed filler elements.
December 28, 1988
Date of Patent:
January 2, 1990
The Boeing Company
Leslie A. Anderson, Eric J. Selby, David L. Wagner, Alfred E. Walter, Jr.
Abstract: A press roll in a paper machine comprising a body cylinder mounted between two end pieces and fastened thereto, and a press cylinder surrounding the body cylinder and spaced apart therefrom. The press cylinder, which is rigid and receives the radial forces of the roll acting in the nip of the press, is fastened at the ends thereof radially immovably relative to the body of the roll. The press cylinder is at one end fastened to one end piece by means of axial bolts, whereby the conical surface of the press cylinder and a corresponding conical surface in the end piece are pressed against each other, thus clamping the press cylinder at the end thereof tightly against the end piece. At the other end of the roll the press cylinder is fastened to the other end piece of the roll by means of a separate fastening flange which is fastened both to the press cylinder and to the end piece by means of axial bolts. The fastening flange comprises an annular projection provided at both sides with a conical surface.
Abstract: A system of a plurality of lead frame matrices of standard width to obviate readjustment of matrix handling means of integrated circuit device assembly machinery. A standard width for each lead frame matrix is achieved by incorporating spacing elements into the construction of the lead frame matrices as is necessary to add to the width of the lead frame matrix to bring it up to standard width. The width of a lead frame matrix includes the lead frames along the width, the spacing elements and matrix guide bars.
Abstract: A fixing roller for use in the fixing stage of a fixing apparatus such as a copying machine provided with multiple rubber and/or fabric layers of certain thicknesses and hardnesses surrounding a core member to improve the copying characteristics of the roller.
October 19, 1988
Date of Patent:
December 19, 1989
Sumitomo Electric Industries, Ltd.
Chiaki Kato, Masaya Nishi, Toshiyuki Hatta
Abstract: A broadcasting arrangement includes a source of signals to be transmitted which is subject to distortion in the event that signals are reflected. An antenna is adapted for radiating all the signal applied to a polarization sensitive input part with a particular polarization. The antenna is mounted on a tower. A waveguide is coupled to the source of signals and to the input port of the antenna. If the waveguide is circular waveguide, the windload on the tower due to wind loading of the circular waveguide is low, but flexure which occurs results in polarization changes which causes signals applied to the antenna input port to be reflected, thereby reducing radiated power and causing distortion. If the waveguide is rectangular, the wind loading is high and the tower must be more sturdy and therefore more costly than for circualr waveguide. A truncated circular waveguide is used which has a wave propagation channel defined by a cylinder and a pair of parallel longitudinal plates in the cylinder.
Abstract: A nozzle plate in which a nozzle through which fluid can pass is formed is prepared, and an insulator layer is located in layer on the nozzle plate except a location of the nozzle. An electrode plate is provided so as to cover the insulator layer, and a valve beam made of a conductive substance is located in an opposing relationship to the nozzle plate. A valve for opening and closing said nozzle is formed at a yieldable portion of the valve beam opposing to the nozzle. Upon energization of the electrode plate and the valve beam of a valve element thus produced, the valve is attracted toward the electrode plate to open or close the valve. Binary control of the valve to fully open or fully close the nozzle and infinite control of the valve to infinitely open or close the nozzle can be readily attained in the valve element.
Abstract: An apparatus for forming leads of semiconductor devices includes a tie-bar cutting device for cutting tie-bars connecting adjacent leads in a lead frame on which semiconductor chips are mounted and which has unwanted resin burrs as a result of resin-sealing, a resin-burr removing device for removing resin burrs from the lead frame whose tie-bars have been cut, and a bending device for bending the leads of the lead frame whose resin burrs have been removed. After tie-bars are cut from a lead frame on which semiconductor chips are mounted, resin burrs are removed from the lead frame and the leads of the lead frame are bent.
Abstract: An electrical component (21) for mechanical mounting and electrical connection with respect to plated through holes (34) of a printed circuit board (20) compatibly with a surface mount attaching process includes an electrically non-conducting body (30), plural generally elongate contacts (31) extending from the body for insertion into such plated through holes (34), and the component (21) having a strip of solder type material (33) for melting, for flow into respective plated through holes, and for re-solidifying mechanically and electrically to couple the component to such printed circuit board. The strip preferably encircles the contacts and has reduced cross section portions between adjacent contacts. Preferably the component is a connector, such as a header, and the contact pins or leads thereof provide an interface connection between the printed circuit board and a separate or portable connector.
June 29, 1988
Date of Patent:
December 5, 1989
Minnesota Mining and Manufacturing Company
Michael J. McCoy, John E. Hartman, John L. Wesbster
Abstract: A method for temporarily sealing holes in a printed circuit board laminate during processing is disclosed. A sheet of deformable material is placed on one side of the PCB and then deformed so that the material extends into each hole to form a protectively sealing plug therein. Thereafter, the other side of the PCB is coated with a suitable resist for subsequent processing. The resist can be either photo-imagable or non-photo-imagable, such as silk screening inks, lacquers and varnishes. After conventional processing of the resist coated PCB, the deformed sheet material that forms the protectively sealing plugs is removed from the PCB. In the preferred embodiment, deformation of the sheet material is accomplished by thermally deforming a thermodeformable sheet material with a pressure differential applied across the thickness of the sheet material.
Abstract: A method and apparatus is disclosed for rotation of a hydroelectric assembly (1) for purposes of repairing and resurfacing of turbine liner walls (8) pitted as a result of cavitation. The method includes rotation of turbine blades (6) and a turbine shaft (7) through a turning mechanism (18) positioned on a blade (6) so that turning forces are exerted directly between the turning mechanism and the surface of the liner wall (8). The turning mechanism (18) comprises a mounting assembly (19) which mounts a turning wheel (22) driven by a motor drive assembly (24) through a gear reduction mechanism (26). A biasing assembly (27) is provided to selectively urge the turning wheel (22) into frictional contact with the surface of the liner wall (8).