C-frame Patents (Class 29/276)
  • Patent number: 9015917
    Abstract: A tool is provided for moving a first clamping or gripping member toward or away from a second facing clamping or gripping member, the tool having a double threaded drive shaft coupled to opposed threaded linkage driving members for causing the threaded linkage driving members to be driven toward or away from each other. As the threaded linkage driving members move closer, the resulting angle of the links becomes steeper, thus increasing the mechanical advantage of the clamping tool, enhancing clamping forces. A beneficial result is a clamping apparatus that requires less manual energy than a traditional clamp. Another beneficial result is provided if the same amount of energy is applied to the driveshaft as in a traditional clamp, the resulting clamping force is significantly higher. If the second clamping member is adjustable, it accommodates wide variations in thickness of an object positioned between the first and second clamping members.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: April 28, 2015
    Inventor: Daniel A. Norton
  • Patent number: 8783671
    Abstract: A clamp includes a first jaw, a second jaw, a first connection, a second connection, and an actuator. The first jaw and the second jaw include a first clamp surface and a second clamp surface, respectively. The first connection operatively connects the first jaw to the second jaw in a manner that permits relative movement between the first jaw and the second jaw. The second connection is operatively connected between the first jaw and the second jaw. The actuator is configured to shorten a length of the second connection to thereby reduce a relative distance between the first clamp surface and the second clamp surface.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: July 22, 2014
    Assignee: Stanley Black & Decker, Inc.
    Inventors: Eric Ranieri, Stephen Rowlay, Robert Christie, Stephen Skeels
  • Patent number: 8727291
    Abstract: An apparatus is provided for securing a panel to a substrate. The apparatus includes a base member, and an attachment member for securing the base member to the substrate. The apparatus further includes a clip member including a U-shaped member and an angle-sided member. The U-shaped member includes a central portion and first and second walls defining a generally U-shaped access region for accepting the angle-sided member. At least one of the first and second walls includes a longitudinal flange extending laterally outwardly from an upper end thereof. Each of the U-shaped member and the angle-sided member includes a corresponding hole for accepting the attachment member therethrough. The apparatus further includes a securing member for pressing the longitudinal flange against at top edge portion of the panel.
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: May 20, 2014
    Assignee: Sundance Renewable Solutions, Inc.
    Inventors: David B. Scoggins, Robert S. Balog, Jr.
  • Patent number: 8608143
    Abstract: The present pipe clamp device is configured for use with standard vee head jack stands. The present device can be used to secure a pipe or similarly shaped object to a standard vee head jack stand. Specifically, the present pipe clamp device can comprise one or more pivoting arms that can facilitate an object's placement into the pipe clamp device or its removal from the pipe clamp, a threaded rod, which can include a release button or quick release mechanism, which can be used to quickly tighten the clamp onto an object being secured and the jack stand or to remove an object from the jack stand.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: December 17, 2013
    Inventors: Wayne Michael Williams, Alex V. Palominos
  • Patent number: 8584334
    Abstract: The invention discloses a widening device and a method for applying label sleeves on objects. The inner diameter of the label sleeve is smaller than a diameter of a perimeter of the objects on which the label sleeve is to be applied. The widening device had four articulated widening jaws which engage an inner surface of the label sleeve. The third widening jaw and the fourth widening jaw are movably arranged between the first widening jaw and the second widening jaw. An articulated support carries the third widening jaw and the fourth widening jaw, wherein the articulated support is made up of a first and a second movable lever.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: November 19, 2013
    Assignee: Krones AG
    Inventors: Hermann Solleder, Bernd Braatz
  • Patent number: 8434205
    Abstract: A tool for releasing a tube from a fluid carrying tubing fitting having a C frame with a first end member and a second longer end member. A screw having a first end and a second end is rotatably coupled to the first and second end members and a knob coupled to the first end of the screw is provided for rotating the screw. A movable jaw is located between the first and second end members and has a threaded opening that engages the first end of the screw. The tool may include a bolster plate which is adapted to be attached to the second end member of the C frame or to the movable jaw to contact the back of a tubing fitting and has an adapter plate with a hook that engages the screw and has a slot for engaging a tube from the front of a tubing fitting.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: May 7, 2013
    Inventor: Douglas Dewell
  • Patent number: 8397365
    Abstract: A rack disassembly tool includes a substantially planar U-shaped collar having a pair of legs extending from a base. A pair of hook members depend downwardly from the distal ends of the pair of legs. A pair of resilient bumpers, or other resilient pads, are mounted in a corresponding pair of elbows formed at junctions between the pair of legs and the pair of hook members.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: March 19, 2013
    Assignee: Rackmate Industries Inc.
    Inventor: Colin Montgomery
  • Patent number: 8366089
    Abstract: A bar clamp includes a handgrip; a fixed jaw carrier; a slide bar comprising two opposite wing members; a moveable jaw carrier and comprising a transverse channel, a trough extending from center of the channel to one end of the channel, a bottom recess, and two opposite stop members in the recess wherein the slide bar passes the channel with the wing members being stopped by the trough in a locked position; and a U-shaped spring-actuated lock assembly in the recess and comprising inverted U-shaped opposite first and second lock members being engaged with the wing members in the locked position, and first and second projections between the lock members and a bottom of the lock assembly and being engaged with the stop members in the locked position. Pushing the locking assembly until being stopped will disengage the lock members from the wing members.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: February 5, 2013
    Assignee: Lai Lien Steel Co., Ltd.
    Inventor: Wei-Li Chen
  • Patent number: 8281471
    Abstract: This invention provides for a ceiling radiation damper fusible link tool and method of inserting a fusible link for a ceiling radiation damper. The fusible link tool has a holder capable of holding a fusible link and a handle connected to the holder so that the holder may be inserted into a ceiling radiation damper by a user.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: October 9, 2012
    Assignee: Aire Technologies, Inc.
    Inventor: Michael J. Florian
  • Patent number: 8276261
    Abstract: In a state where the expanded protruding portion of the heat-exchanging tube, which has been expanded inside a grip portion of a chucking sleeve whose diameter has been reduced by a clamp bushing, is gripped by the grip portion, a tube expanding billet is inserted into a yet-unexpanded part of the heat-exchanging tube to cause tube expansion. When doing so, a guide portion, which is formed on a flare punch and has the same diameter as the maximum outer diameter of the tube expanding billet, is inserted inside the expanded protruding portion of the heat-exchanging tube gripped by the grip portion.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: October 2, 2012
    Assignee: Hidaka Seiki Kabushiki Kaisha
    Inventor: Yoshihiro Baba
  • Patent number: 8266774
    Abstract: A mechanical apparatus designed to separate and spread apart pipe flanges used in industrial type piping systems comprising a screw-driven wedge assembly is herein disclosed. The jacking apparatus provides two (2) jaw assemblies which fit between a pair of mated flanges. The jaw assembly is held in place during the prying process by a tethered metal pin which extends through one of the pipe flange bolt holes. A pair of safety restraint straps support the apparatus during use. Once the apparatus has spread apart the flanges, flange gasket material therebetween can be changed as well as other repair, maintenance or modification activities such as inserting an isolation blind. The apparatus is available in multiple sizes to fit various pipe diameters and flange sizes.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: September 18, 2012
    Inventor: Walter M. Doty
  • Patent number: 8240018
    Abstract: The invention relates to a device for pulling out a terminal clamp with a fastening section for fastening the device to the terminal clamp and a grip section. The fastening section and the grip section are connected by a pivotable connection. A second fastening device for detachable fastening of the grip section to the terminal clamp is provided on this grip section.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: August 14, 2012
    Assignee: MC Technology GmbH
    Inventors: Frank Walter, Hermann Stadler
  • Patent number: 8235340
    Abstract: A spring-loaded clamp device including a C-shaped frame having first and second substantially opposing arms interconnected by an intermediate shank, the first arm having a substantially hollow carrier sleeve aligned substantially along a clamping direction oriented substantially transverse of the second arm, and the second arm having a thin and flat anvil portion positioned opposite from the carrier sleeve and further comprising an interior clamping surface that is oriented substantially transverse of the clamping direction. A clamping rod is carried in the hollow of the sleeve for longitudinal movement in the clamping direction toward an internal face of the second arm and in an opposite unclamping direction away from the second arm. An expansive biasing member is coupled for expanding the clamping rod for longitudinal movement along the clamping direction.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: August 7, 2012
    Inventor: Jeffrey D. Carnevali
  • Patent number: 8209836
    Abstract: A wall support mounting device and method use at least one drive surface that moves in a plane or about an axis contained between the wall hanging and the wall as it couples at least one wall support to the wall.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: July 3, 2012
    Inventor: Don W. Klein
  • Patent number: 8042242
    Abstract: The device is based on using a thrust bolt in a modified C-clamp design to push a pressure plate to pry apart two intersecting flanges of a profile. The device is primarily used for on-boat repairing of aluminum extrusion profile boat toe rails that have segments of their vertical flanges crushed inward. It has utility for bending any flanges apart that are greater than 20 and less than 160 degrees apart to start with. It has utility for bending flanges apart that are made from any material, such as metal, that has an elastic limit and enough plastic flow to permanently bend without rupture.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: October 25, 2011
    Inventors: Rexford Allison Maugans, John Smircic
  • Patent number: 8025275
    Abstract: A single hand operated ratchet clamp comprises a finger ring lever and a typical ratchet clamp having a slide rail, a sliding arm, a fixed arm, and a lever element with pressure plate. The finger ring lever is pivoted to the free end of the lever element so that the ratchet clamp can be operated with one hand only.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: September 27, 2011
    Inventor: Harry Wong
  • Patent number: 7946013
    Abstract: Provided is a driving jig for a closing cap which makes it possible to drive a closing cap straight into a bolt installation hole (11) formed in a track rail (1) and which allows this driving operation to be quickly repeated on a plurality of bolt installation holes (11). The jig includes a driving piston (73) and a guide holder (72) for maintaining the driving piston (73) in a predetermined attitude with respect to the track rail (1). The driving piston (72) has a pressing portion (75) coming into contact with an upper surface of the closing cap (70), and a hammering portion (74a) to be hammered by a tool. The guide holder has a cylinder (72a) in which the driving piston (73) slides, and has, at an opening at one end of the cylinder, a guide groove (77) into which an upper portion of the track rail is loosely fitted and which is orthogonal to an axial direction of the cylinder.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: May 24, 2011
    Assignees: THK Co., Ltd, THK GmbH
    Inventor: Masahiro Kumagai
  • Patent number: 7942293
    Abstract: A cosmetic holder includes a mounting base adapted for mounting to an appendage of a user, a plurality of cosmetic containers for storing cosmetics and/or cosmetic accessories, and a swivel joint connected between the mounting base and a selected cosmetic container for adjusting a position of the cosmetic container with respect to the mounting base about three mutually perpendicular axes.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: May 17, 2011
    Inventors: Steven Lawrence, Scott Hersh, Joseph L. Molino
  • Patent number: 7918002
    Abstract: A tubing disconnect tool and a method of disconnecting tubing. A disconnect tool for disconnecting a tubing end which is inserted within a collet of a fitting comprises a first plate member, a second plate member and bias member. The first plate member has a first front portion, a first rear portion and a first middle portion. The first plate member further has a channel disposed within the first middle portion. The second plate member has a second front portion, a second rear portion and a second middle portion. The second plate member also has a second channel disposed within the second middle portion.
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: April 5, 2011
    Inventor: Craig Kissel
  • Patent number: 7908725
    Abstract: An apparatus and method for aligning septic system pipe in a leach field is disclosed. The apparatus includes a plurality of curvilinear members each of which has portions that correspond to the outer circumference of a septic pipe to temporarily secure the pipe in a pre-designated position relative to other adjacent pipes. The curvilinear members can be fixed or variably positioned on an elongate beam that connects and sets the distances between adjacent curvilinear members. The use of multiple apparatuses enables the user to set the relative distances between septic pipes in a leach field with labor-reduced efficiency. A method for aligning pipe with the apparatus is also disclosed.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: March 22, 2011
    Inventors: James R. Irish, Stephen M. Bacon
  • Patent number: 7472493
    Abstract: An apparatus for locating at least one site on a first side of a workpiece in a predetermined relation with at least one aperture located on a second side of the workpiece includes: (a) at least one first locus-fixing structure; each respective first locus-fixing structure of the at least one first locus-fixing structure being configured for effecting the locating at least one respective site of the at least one site; (b) at least one second locus-fixing structure configured for cooperating with the at least one aperture to substantially fix the at least one second locus-fixing structure with respect to the workpiece in an installed orientation; and (c) a substantially rigid connecting member coupled with the at least one first locus-fixing structure and the at least one second locus-fixing structure. The connecting member situates the at least one first locus-fixing structure substantially in the predetermined relation in the installed orientation.
    Type: Grant
    Filed: May 23, 2007
    Date of Patent: January 6, 2009
    Assignee: Boeing Company
    Inventors: Mark A. Schmier, II, Paul J. Strand
  • Patent number: 7305755
    Abstract: A hydraulic processing tong for processing workpieces, with a tool, has a first tool part with an axially movable press ram or plunger, which with a first end or a tool located there and an opposing workpiece assembly forms a work area or work gap and with the first end can move toward and away from the workpiece assembly, and with a hydraulic actuating device for applying a force to the press ram, causing it to move in the direction of the workpiece assembly.
    Type: Grant
    Filed: February 12, 2004
    Date of Patent: December 11, 2007
    Inventor: Heiko Schmidt
  • Patent number: 7080433
    Abstract: A workpiece seat for the machining of bar-shaped workpieces by milling and turning. The workpiece seat has an elongated housing, a spindle rotatably supported in the housing, and an electric direct drive for the spindle. The drive rotor is fixed on the spindle and the drive stator is fixed in the housing. Clamping means are provided at the working end in the spindle for fixing a bar-shaped workpiece in the spindle. A connection unit is provided at the rear part of the housing for power supply. A fixing means is provided for fixing the spindle in the housing. To achieve high machining accuracy of thick bars and high clamping forces at reduced longitudinal dimensions, as well as relatively simple design, the fixing means is formed as a compact part and is arranged at the working end of the housing.
    Type: Grant
    Filed: February 23, 2004
    Date of Patent: July 25, 2006
    Assignee: Deckel Maho Pfronten GmbH
    Inventors: Alfred Geissler, Karl Lechleiter
  • Patent number: 6854173
    Abstract: The fastener installation apparatus and method of the present invention include a housing and a moveable body at least partially within the housing. The moveable body defines a plurality of openings and is fixably attached to at least one piston, which is in moveable contact with the housing. First and second cavities are defined on opposite sides of the piston and respective openings in the moveable body are in communication with opposite sides of the piston. In addition, a valve directs a fluid through the appropriate openings in the moveable body and into the first cavity or the second cavity, as desired, which, in turn, alternately extends and retracts the moveable body relative to the housing. A jaw extends from the housing in alignment with the moveable body, such that the jaw and the moveable body cooperate to install a fastener upon extension of the moveable body.
    Type: Grant
    Filed: July 8, 2002
    Date of Patent: February 15, 2005
    Assignee: The Boeing Company
    Inventor: Daniel A. Hippe
  • Patent number: 6789309
    Abstract: A self-piercing type rivet setting system 30 comprises: a rivet swaging assembly 35; a robot 6 which moves the rivet swaging assembly 35 to put it in position relative to a predetermined site on a workpiece to be riveted; a single integrated controller 31 made up by an integration of a controller for controlling a riveting operation of the rivet swaging assembly and a controller for controlling the motion of the robot; and a rivet feeder 9 for automatically feeding a self-piercing type rivet to the rivet swaging assembly. From the integrated controller 31, a interface cable 33 extends to the robot 6 and another interface cable 34 extends to the rivet feeder 9, and the rivet swaging assembly 35 is integrally incorporated into the robot 6.
    Type: Grant
    Filed: September 4, 2001
    Date of Patent: September 14, 2004
    Assignee: Newfrey LLC
    Inventor: Yoshiteru Kondo
  • Patent number: 6530135
    Abstract: The present invention comprises a camshaft holding tool and corresponding method for operating the camshaft holding tool in double overhead camshaft engines. In one embodiment, the holding tool includes a body portion including first and second curved portions, where each of the first and second curved portions includes two or more teeth. Each tooth of the first and second curved portions engages adjacent teeth of respective one of first and second camshaft sprockets. A method of operating the tool includes placing the tool between the first and second camshaft sprockets and rotating the tool about an axis until the teeth of the first and second curved portions engage teeth of the first and second camshaft sprockets, respectively.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: March 11, 2003
    Inventor: Bahram Soleymani
  • Patent number: 6233803
    Abstract: In accordance with the present invention, there is provided a riveting device. The riveting device is provided with a body defined by a body longitudinal axis and having a pressure port formed therein. The riveting device is further provided with a jaw defined by a jaw plane. The jaw has first and second jaw extensions with the first jaw extension having a jaw plunger orifice extending therethrough. The riveting device is further provided with an angular attachment having an attachment plunger orifice extending therethrough. The angular attachment is attached to the first jaw extension with the attachment plunger orifice being axially aligned with the jaw plunger orifice. The angular attachment is further attached to the body and formed to maintain the jaw plane at an angular orientation relative to the body longitudinal axis. The riveting device is further provided with a rivet plunger having opposing rivet and base ends.
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: May 22, 2001
    Assignee: Vought Aircraft Industries, Inc.
    Inventor: Craig M. Rose
  • Patent number: 6199271
    Abstract: The invention concerns an apparatus and a method for mechanically joining metal sheets, profiles and/or multi-sheet joints lying on top of each other, wherein joining tools are moved by power means towards the parts to be joined and a joint is made between the parts to be joined by the force effect of the joining tools. To make the joining tools easier to handle and widen the range of application for joints, it is proposed to reduce the reaction forces of the joining process by the fact that one joining tool applies the joining force to the joint at an exciting frequency which is above the characteristic frequency of the opposite joining tool, and the mounting of at least one joining tool is isolated from vibrations. The vibration isolation can also be arranged exclusively or in addition in the excited joining tool or the parts to be joined.
    Type: Grant
    Filed: January 13, 1999
    Date of Patent: March 13, 2001
    Inventors: Ortwin Hahn, Volker Schulte
  • Patent number: 6148507
    Abstract: A machine for pressing a fastener through sheet metal with a magazine for holding a strip of fasteners that self load semi-automatic, a clamp for loading the fastener, and holding material to be fastened, a fastener barrel guide to establish proper position of the fastener to be installed, a first stage low power source to provide pressure for loading the fastener and clamping the material, a second stage high power source for installing and securing the fastener, a lock seat set opposed to the clamp, to hold the opposite side of the material and the second part of the fastener component. A preferred embodiment includes a lock seat for holding the second part of the fastener. A preferred embodiment includes a removable lock seat, so that the tool will have the ability to use different type lock-seats, therefore allowing the same tool the capability of installing different type fasteners.
    Type: Grant
    Filed: March 12, 1999
    Date of Patent: November 21, 2000
    Inventors: Jeffery S Swanson, Eric S Swanson
  • Patent number: 5950294
    Abstract: A tool which immobilizes dual camshafts of an internal combustion engine by interfering with teeth of the gears or sprockets driving the camshafts when inserted into engagement with the teeth of both gears or sprockets. The tool comprises a generally U-shaped member, wherein the sides of the U pass into and occupy valleys of the teeth. The center of the U has reliefs exposing timing marks of the engine. The tool has optional adjustment structure for adjusting length of the sides of the U and optional second adjustment structure for variably spacing the two sides of the U apart. The former adjustment structure may comprise frictionally retained, slidably disposed members, or may comprise a clamp employing a threaded fastener. In an alternative embodiment, the tool may be formed in separable components wherein two interference members are mounted on a threaded shaft.
    Type: Grant
    Filed: March 17, 1998
    Date of Patent: September 14, 1999
    Inventor: Joseph L. Gibbs
  • Patent number: 5850680
    Abstract: A new disc brake assembly tool for providing an easy means for positioning a piston into the piston cylinder of a caliper to provided proper clearance so that a disc brake pad may be installed. The inventive device includes a base having an elongate center 1t portion, an arm portion, and a foot portion. The arm and foot portions are extended substantially perpendicular from the center portion and are spaced apart from one another. A mount member is coupled to the terminal end of the arm portion. The mount member has a mount bore extending therethrough. Inserted through the mount bore is a tubular sleeve having a threaded lumen. the sleeve being positionable within the mount bore between an extended position and a retracted position. The proximal end of the sleeve has a radial flange outwardly extending therefrom.
    Type: Grant
    Filed: January 29, 1998
    Date of Patent: December 22, 1998
    Inventors: Theresa Verrier, James Verrier
  • Patent number: 4837915
    Abstract: A system and method for use in quickly and easily removing bearings or collars from shafts, without damaging the shafts, is disclosed. The system comprises a frame to which are attached a slider and breaking point members, which slider and breaking point members can be adjusted to accept bearings or collars of varying sizes, and contain them in a stable manner so that a force can be imparted to the breaking point members, thereby causing the bearing or collar to break and be removed from the shaft to which it was mounted. The system is constructed to allow replacement of the slider, breaking point members and other elements, for instance when they become worn through use.
    Type: Grant
    Filed: January 4, 1988
    Date of Patent: June 13, 1989
    Assignee: James D. Welch
    Inventor: Richard G. Willms
  • Patent number: 4724599
    Abstract: A machine tool for supporting a workpiece during the finishing of a plurality of surfaces has a pair of center support means which are coaxially aligned for rotatably supporting a shaft and gear structure. Bearing support surfaces can be simultaenously machined concentric with the axis of the center supports. A gear finishing tool is supported on another axis which is disposed in nonintersecting relation with the axis of the center supports for simultaenously machining a gear surface.
    Type: Grant
    Filed: December 17, 1986
    Date of Patent: February 16, 1988
    Assignee: General Motors Corporation
    Inventor: William R. Corkin
  • Patent number: 4711016
    Abstract: The invention relates to a flexible manufacturing unit with at least two machine tools (1,2) and a transport device (9) movable in rectangular coordinates having receptacles for carriers (8) holding workpieces and for the tools (6). The invention consists in that the transport device (9) is numerically controlled, that the tools (6) are individually transportable between a tool buffer store (29) and the machine tools (1,2) and that tool magazines (5) integrated with the machine tools are provided, which tool magazines are also accessible for tool exchange during the working period of the machine tools (1,2). In this way, a rapid method of operation is possible which is independent of the cycle and permits free selection.
    Type: Grant
    Filed: November 8, 1983
    Date of Patent: December 8, 1987
    Assignee: Werner and Kolb Werkzeugmaschinen GmbH
    Inventors: Henning Genschow, Uwe Heisel, Joachim Schuster
  • Patent number: 4512222
    Abstract: The loosening tool includes a U-shaped body with a bore in one of the legs thereof. A shaft is slidably located in the bore and carries a hammer at one end and a reciprocating hammer engaging means at the other end. The hammer and the other leg have surfaces that generally match the surfaces of interconnected threaded members which are to be loosened.
    Type: Grant
    Filed: May 2, 1983
    Date of Patent: April 23, 1985
    Assignee: Snap-on Tools Corporation
    Inventor: Steven L. Christophersen
  • Patent number: 4301588
    Abstract: The process employs ion implantation for precise dopant control. The implantation is performed into a thin layer of amorphous silicon covering the emitter and collector opening. The implantation energy is chosen so that the damage is confined to the amorphous layer. Since the deposited silicon layer is to be removed by subsequent processing, its thickness must be carefully controlled. The layer is preferably deposited by a sputtering technique which allows the necessary uniformity and reproducibility of the layer thickness. Furthermore, the sputtering process with its energetic ions provides a reproducible quality interface which is of critical importance for a diffusion source. With such a source, the diffusion into the single crystal silicon extends about the same distance in the horizontal as the vertical direction. This provides the greatest possible horizontal displacement of the junction under the passivating silicon dioxide layer.
    Type: Grant
    Filed: February 1, 1980
    Date of Patent: November 24, 1981
    Assignee: International Business Machines Corporation
    Inventors: Cheng T. Horng, Alwin E. Michel