Patents Assigned to Kollmorgen Technologies Corporation
  • Patent number: 5173651
    Abstract: A direct current brushless electric motor has a rotor, and a stator with inwardly extending teeth, between each pair of which a winding slot is defined. The radially inward face of each tooth has a dummy slot shaped so the reluctance forces between rotor and stator due to the presence of the dummy slots are the same as those due to the winding slots. Motor control arrangement incorporates a current feedback loop based on the incoming phase of each phase combination in the phase energization sequence in a driving mode and phase changeover may be initiated by Hall devices, two for each transition point, underlying the axial ends of the rotor magnets. The control arrangement may incorporate a pulse width modulation power supply permitting the establishment of bias currents under motor standstill conditions.
    Type: Grant
    Filed: July 15, 1988
    Date of Patent: December 22, 1992
    Assignee: Kollmorgen Technologies Corporation
    Inventors: Maurice Buckley, Arthur Stone, Aengus Murray
  • Patent number: 4859807
    Abstract: This invention relates to interconnection circuit boards and processes for making and modifying interconnection circuit boards wherein adhesive is applied to a wire used in scribing a conductor pattern. The adhesive is activated to a tacky state during the wire scribing operation which forms the conductor pattern, and can thereafter be cured to permanently bond the conductors to the board surface.
    Type: Grant
    Filed: October 1, 1987
    Date of Patent: August 22, 1989
    Assignee: Kollmorgen Technologies Corporation
    Inventors: Brian E. Swiggett, Ronald Morino, Raymond J. Keogh, Jonathan C. Crowell, George Szenczy, Andrew J. Schoenberg, Marju L. Friedrich
  • Patent number: 4853604
    Abstract: In a sensor having a drive winding for establishing a forward field, an electrically conductive screen is displaceable relative to a sense winding. In the presence of the drive field, eddy currents are generated in the screen to establish a counter-field opposing the forward field, so that the sense winding is shaded by the screen to a varying extent during relative displacement of screen and sense winding and the voltage induced in the sense winding is accordingly correspondingly varied. Application of a high frequency input to the drive winding results in a modulated output from the sense winding which may be demodulated to provide a signal indicative of screen position relative to sense winding. The position signal may be further processed to provide a speed signal. The sensor may assume a multiplicity of linear or planar, rotational and axial or solenoidal configurations.
    Type: Grant
    Filed: January 26, 1988
    Date of Patent: August 1, 1989
    Assignee: Kollmorgen Technologies Corporation
    Inventors: Francis McMullin, John V. Byrne, Aengus Murray
  • Patent number: 4818322
    Abstract: This invention relates to a method of using laser energy for bonding and stripping conductors during the scribing operation. The method provides and directs discrete laser beam pulses of substantially the same energy content at a rate which continuously varies as the conductor feed rate continuously varies to provide a constant number of discrete pulses for each incremental length of conductor being scribed.
    Type: Grant
    Filed: September 14, 1987
    Date of Patent: April 4, 1989
    Assignee: Kollmorgen Technologies Corporation
    Inventors: Ronald Morino, Brian E. Swiggett, Raymond J. Keogh, Jonathan C. Crowell
  • Patent number: 4797592
    Abstract: A rotary electric dynamo machine in which the ripple component in the output occurs at a higher frequency. One half of the pole faces have a nonuniform airgap while the other half have a uniform air gap and cover a noninteger slot distance. The armature has an odd number of slots. Instead of the usual ripple component at the slot frequency, a dynamo constructed as described above, surprisingly, has a predominant ripple component at twice the slot frequency.
    Type: Grant
    Filed: June 17, 1982
    Date of Patent: January 10, 1989
    Assignee: Kollmorgen Technologies Corporation
    Inventor: Thomas R. England
  • Patent number: 4782272
    Abstract: A direct current brushless electric motor has a rotor, and a stator with inwardly extending teeth, between each pair of which a winding slot is defined. The radially inward face of each tooth has a dummy slot shaped so the reluctance forces between rotor and stator due to the presence of the dummy slots are the same as those due to the winding slots. Motor control means incorporate a current feedback loop based on the incoming phase of each phase combination in the phase energization sequence in a driving mode and phase changeover may be initiated by Hall devices, two for each transition point, underlying the axial ends of the rotor magnets. The control means may incorporate a pulse width modulation power supply permitting the establishment of bias currents under motor standstill conditions.
    Type: Grant
    Filed: July 17, 1985
    Date of Patent: November 1, 1988
    Assignee: Kollmorgen Technologies Corporation
    Inventors: Maurice Buckley, Arthur Stone, Aengus Murray
  • Patent number: 4763057
    Abstract: A variable frequency AC induction motor servo control system wherein slip is momentarily increased in response to error signal transients. In a preferred embodiment, a phase shift is introduced in the energizing stator current as the servo velocity error signal increases over at least the lower portion of the error signal range, the maximum phase shift being between 45.degree. and 90.degree..
    Type: Grant
    Filed: July 8, 1987
    Date of Patent: August 9, 1988
    Assignee: Kollmorgen Technologies Corporation
    Inventors: George E. Danz, C. Calvin Shuler
  • Patent number: 4763056
    Abstract: In a power supply system for a variable reluctance motor, each phase winding of the motor is connectible across a pair of supply rails by first and second switch means located respectively between the first supply rail and the winding and between the winding and the second supply rail. The first switch means is a fast switch-off device such as a gate turn-off thyristor or a transistor, while the second switch means is a slow turn-off device, such as a thyristor suitable for application to a line-commutation situation. In a two-phase configuration, where the second switch means is a thyristor, force-commutation of the second switch means may be achieved by means of a suitable capacitor interconnection between the thyristors switching the respective phases.
    Type: Grant
    Filed: January 7, 1986
    Date of Patent: August 9, 1988
    Assignee: Kollmorgen Technologies Corporation
    Inventors: John V. Byrne, Jeremiah B. O'Dwyer
  • Patent number: 4750092
    Abstract: An interconnecting package for attaching electronic devices, such as semiconductor chips, to an interconnection board and processes for the production and mounting thereof. The interconnection package comprises a multiplicity of metallic leads or pins aligned in a regular array and a first substrate of molded plastic material around the metallic leads or pins with the metallic leads or pins extending through the first substrate. A conductive pattern is formed on a surface, the conductive pattern being adapted to electrically connect to the electronic device, and the conductive pattern extends into a multiplicity of recesses. Each of said metallic leads or pins extends into a corresponding recess and makes an electrical connection to the conductive pattern within the recess.
    Type: Grant
    Filed: October 20, 1986
    Date of Patent: June 7, 1988
    Assignee: Kollmorgen Technologies Corporation
    Inventor: William E. Werther
  • Patent number: 4743710
    Abstract: In making coaxial interconnection boards according to this invention coaxial conductors are scribed onto a circuit board substrate. The coaxial conductors are preformed and affixed in a predetermined pattern on the substrate using an adhesive. A conductive layer forming a ground plane covers the surface of the substrate interconnecting the shields of the coaxial conductors. The conductive material other than the coaxial signal conductors is eliminated around the termination points of the coaxial conductors thereby creating clearance areas. The clearance areas permit connection of the signal conductors to surface terminal pads without shorting to the shield conductors or ground planes.
    Type: Grant
    Filed: October 18, 1985
    Date of Patent: May 10, 1988
    Assignee: Kollmorgen Technologies Corporation
    Inventors: Leonard Shieber, J. Philip Plonski, Michael Vignola, Benjamin G. Chin
  • Patent number: 4733149
    Abstract: A real time adaptive control capable of maintaining stable operation with changing inertia. The controller utilizes a pseudo-derivative feedback (PDF) type control wherein dynamic adjustment is achieved by adjusting only a single variable. The variable can be controlled as a function of the derivation of motor speed divided by motor current for adaptive control with changing inertia. Control may also be achieved as a function of motor speed divided by the integral of motor current over the same interval. In a digital implementation the integral of motor current the time required for a predetermined speed change provides effective control.
    Type: Grant
    Filed: May 31, 1985
    Date of Patent: March 22, 1988
    Assignee: Kollmorgen Technologies Corporation
    Inventor: Wayne T. Culberson
  • Patent number: 4729160
    Abstract: In an electric motor having a plurality of magnets bonded to a rotor hub, a composite sleeve is disposed over the rotor hub and magnets. The composite sleeve may be wound directly upon the rotor hub, or the composite sleeve may be wound upon a mandrel and slid over the rotor hub.
    Type: Grant
    Filed: August 14, 1985
    Date of Patent: March 8, 1988
    Assignee: Kollmorgen Technologies Corporation
    Inventor: Gerald W. Brown
  • Patent number: 4711026
    Abstract: This invention relates to interconnection circuit boards and processes for making and modifying interconnection circuit boards wherein adhesive is applied to a wire used in scribing a conductor pattern. The adhesive is activated to a tacky state during the wire scribing operation which forms the conductor pattern, and can thereafter be cured to permanently bond the conductors to the board surface.
    Type: Grant
    Filed: July 19, 1985
    Date of Patent: December 8, 1987
    Assignee: Kollmorgen Technologies Corporation
    Inventors: Brian E. Swiggett, Ronald Morino, Raymond J. Keogh, Jonathan C. Crowell, George Czenczy, Andrew J. Schoenberg, Marju L. Friedrich
  • Patent number: 4712005
    Abstract: In an optical shaft encoder for converting rotary motion to an electrical signal, a shaft is rotatably mounted in a base and has a code disk attached thereto. A light source and photodetector are disposed on opposite sides of the code disk. The photodetector is covered by a mask which is attached thereto. The photodetector/mask assembly is loosely inserted into a printed circuit board and a spacer is placed between the code disk and the photodetector/mask assembly to achieve a predetermined air gap. The photodetector/mask assembly is then radially aligned with the code disk. After proper placement, the photodetector/mask assembly is soldered in place and the spacer is removed. This technique allows the optical shaft encoder to be manufactured to precise tolerances without the necessity of precision machining.
    Type: Grant
    Filed: December 19, 1985
    Date of Patent: December 8, 1987
    Assignee: Kollmorgen Technologies Corporation
    Inventor: Lalit J. Savla
  • Patent number: 4706206
    Abstract: In a multi-color printing process, measurements of the optical density of two different three-color halftone control areas are used to calculate dot gain and solid density of the cyan, magenta and yellow images. Since no single-color solid control targets are used, control targets may be hidden or camouflaged in a border or logo in the final printed product. The two control targets can consist of light and dark near-neutral gray balance targets. Alternatively, two different three-color halftone regions of the printed image can be used as control areas, eliminating the need for separate control targets. Densitometers having blue, green and red filters use the two three-color halftone control areas to provide density measurements which are used by a computer to calculate the densities of cyan, magenta, and yellow halftone images. The computer then calculates the dot gain and solid density of the process inks, which are displayed to a pressman who can make appropriate adjustments to the printing process.
    Type: Grant
    Filed: August 24, 1984
    Date of Patent: November 10, 1987
    Assignee: Kollmorgen Technologies Corporation
    Inventors: Albert J. Benoit, Dudley M. Boden, David G. Decker, Stanley J. Kishner, Robert D. Van Arsdell
  • Patent number: 4703243
    Abstract: A stepping motor including a plurality of stator poles wherein the stator poles are non-symmetrically displaced from their normal position to reduce harmonics in the torque/displacement crossing of the motor.
    Type: Grant
    Filed: April 17, 1986
    Date of Patent: October 27, 1987
    Assignee: Kollmorgen Technologies Corporation
    Inventors: David J. Ettelman, John G. Floresta
  • Patent number: 4698537
    Abstract: In a two-phase salient pole variable reluctance motor in which the number of stator poles is four or a multiple of four, alternate stator poles carry windings of different phases and each stator pole has an elongated pole shoe, so that the pole tips of each adjacent pair of stator poles are closely spaced. Each rotor pole has an iron depletion layer in the vicinity of its poleface surface which defines a saturating zone, across which the greater part of the magnetomotive force produced by stator windings is developed by uniform flux build-up with rotor angle throughout almost the entire duration of pole overlap. A working stroke approximating a stator pole pitch is achieved.
    Type: Grant
    Filed: January 7, 1986
    Date of Patent: October 6, 1987
    Assignee: Kollmorgen Technologies Corporation
    Inventors: John V. Byrne, Jeremiah B. O'Dwyer
  • Patent number: 4693778
    Abstract: This invention relates to an apparatus for making circuit boards in which insulated conductors are applied and bonded to a nonconductive surface to form a conductive path between contact points thereon in a predetermined precise pattern.
    Type: Grant
    Filed: July 19, 1985
    Date of Patent: September 15, 1987
    Assignee: Kollmorgen Technologies Corporation
    Inventors: Brian E. Swiggett, Ronald Morino, Raymond J. Keogh, Jonathan C. Crowell
  • Patent number: 4686437
    Abstract: An electromechanical energy conversion system comprising a brushless motor and a stored program controller for controlling motor operation in a plurality of modes in accordance with internally generated and/or external commands.
    Type: Grant
    Filed: September 17, 1986
    Date of Patent: August 11, 1987
    Assignee: Kollmorgen Technologies Corporation
    Inventors: Lawrence W. Langley, H. Keith Kidd
  • Patent number: 4683036
    Abstract: Method for electroplating non-metallic surfaces on a substrate, e.g. of plating holes in metal clad laminates, is disclosed. Metallic sites are formed on the surface and the resulting site-containing surface is electroplated by means of an electroplating bath comprising a component which causes the plating to preferentially occur at said sites in comparison to the plating on surfaces of the same metal as the one plated out; whereby a rate differential of the plating-reaction on site-surfaces is achieved with respect to the plating-reaction on a surface consisting of the metal to be plated out.
    Type: Grant
    Filed: November 21, 1985
    Date of Patent: July 28, 1987
    Assignee: Kollmorgen Technologies Corporation
    Inventors: Denis M. Morrissey, Peter E. Takach, Rudolph J. Zeblisky