Patents Represented by Attorney Edwin W. Uren
  • Patent number: 3972522
    Abstract: Disclosed is a document view station adjacent to a document guideway that will, upon being alerted to a misread document, ready itself to intercept the misread document. Once intercepted the misread document may be cammed out of the guideway to a position where it may be easily viewed, tactilibly manipulated, and optionally cammed back to is original location in the document stream for further processing. The document view station additionally has the ability to self-adjust its camming to the width of the document.
    Type: Grant
    Filed: September 2, 1975
    Date of Patent: August 3, 1976
    Assignee: Burroughs Corporation
    Inventor: Harry L. Wallace
  • Patent number: 3970935
    Abstract: A digital tachometer for generating electrical pulses at a rate indicative of the speed of rotation of a shaft-like member. A first toothed disk having N teeth is affixed to the shaft and a housing having a second set of M teeth is fixed with respect to the shaft and positioned around the toothed disk. As the shaft rotates, individual ones of the teeth on the outer periphery of the disk which is affixed to the rotating shaft alternatively pass into and out of close proximity to individual ones of the teeth of the outer housing resulting in periodic increases and decreases in the reluctance of the system. A sensing coil is positioned with respect to the housing so as to generate an electrical current which varies as the reluctance changes from one polarity to another as the shaft rotates.
    Type: Grant
    Filed: February 18, 1975
    Date of Patent: July 20, 1976
    Assignee: Burroughs Corporation
    Inventors: Jack Beery, Daniel A. Wisner
  • Patent number: 3968744
    Abstract: A light weight molded print hammer is provided with a pair of integrally formed and interconnected flexure members and an integrally formed rigid back-up member spaced from said flexure members, said print hammer being designed for pivotal mounting in a line priner in cooperable relationship with a solenoid and a printing position thereof, an armature carried by the molded print hammer being magnetically attracted upon energization of the solenoid to pivotally activate the rigid back-up member and to thereby translatably propel the pair of flexure members into free flight in the direction of the printing position, a metallic impact tip carried by one of the flexure members being translatably impacted into printing contact with a print media, inked ribbon and selectively positioned type character disposed in the printing position, the rigid back-up member and its spaced relationship relative to a contiguous one of the flexure members serving to absorb and to dampen the rebounding shock caused by the printing c
    Type: Grant
    Filed: March 3, 1975
    Date of Patent: July 13, 1976
    Assignee: Burroughs Corporation
    Inventors: Abdul L. Kasu, William J. Basse
  • Patent number: 3969600
    Abstract: The disclosure relates generally to key assemblies employed in electrical switch operating keyboard devices and more particularly to the improved assembly of parts forming an individual depressible key on such a keyboard. Each key assembly is comprised of parts cooperatively interfitting to provide both audio and tactile feedback for the keyboard as well as a bifurcated electrical contact provision. Included in each key assembly is a spring having a buckling beam member with two end supports that will resist a key depression, a hermetic rubber pad that will also resist key depression and a pair of spring straddling members depending from the key assembly for conveying forces employed to depress the key to the switch associated with the assembly to effect closure of the same as well as for substantially reducing if not eliminating a detrimental contact bounce encountered in the operation of such assemblies.
    Type: Grant
    Filed: June 11, 1975
    Date of Patent: July 13, 1976
    Assignee: Burroughs Corporation
    Inventor: Dewey M. Sims, Jr.
  • Patent number: 3965430
    Abstract: A system for accurately digitizing a signal from a high density optical tachometer using a psuedo zero-crossing detector for subsequent use in a speed measuring device. An added enhancement of the system is the ability to double the frequency response of the input signal to thereby provide a more sensitive indication of incremental speed changes.
    Type: Grant
    Filed: June 18, 1975
    Date of Patent: June 22, 1976
    Assignee: Burroughs Corporation
    Inventor: Arnold W. Brandt
  • Patent number: 3961784
    Abstract: Document transport apparatus in a document reader sorter is provided with a vacuum assisted friction feeder for picking documents one at a time from a document hopper and for advancing the documents at high speed along a document transport guideway to the control of a transport burst roller, the picking of the documents from the hopper by an apertured friction feed belt being assisted and facilitated by a low pressure vacuum directed upon a linearly disposed section thereof adjacent the hopper, and the high speed advancement of the documents into and along the document guideway to the control of the transport burst roller being assisted and facilitated by a high pressure vacuum directed upon a curvilinear section of the apertured belt cooperably disposed relative to the apertured circumference of a drive pulley, said high pressure vacuum being effective to lock the picked documents and particularly the leading edges thereof to the feed belt for an accelerated feeding thereof, said accelerated feeding of the d
    Type: Grant
    Filed: March 3, 1975
    Date of Patent: June 8, 1976
    Assignee: Burroughs Corporation
    Inventors: Nitin M. Sevak, Chauchang Su
  • Patent number: 3961371
    Abstract: A dampening system operative to effectively lower the transmission function of an external frequency coming in on a drive mechanism as to an associated magnetic read head so that the head's natural frequency is significantly below its response level.
    Type: Grant
    Filed: December 20, 1974
    Date of Patent: June 1, 1976
    Assignee: Burroughs Corporation
    Inventors: Lawrence P. Kobylarz, Ronald H. Mack
  • Patent number: 3956734
    Abstract: An apparatus which is responsive to the pressure variations inherent in an individual's act of handwriting a signature for generating electrical signals representative of these characteristic pressure variations for use in signature identification systems. The apparatus employs a handwriting surface which is suspended in space and positioned for receiving a handwritten signature by a pair of cantilever arms which extend from a single semi-rigid vertical support member, the vertical support member being provided with a sensing means responsive to the varying strain induced in the support member when an individual is writing his signature on the handwriting surface for generating an electrical signal representative of the pressure variations in said signature.
    Type: Grant
    Filed: November 18, 1974
    Date of Patent: May 11, 1976
    Assignee: Burroughs Corporation
    Inventor: Arthur J. Radcliffe, Jr.
  • Patent number: 3955738
    Abstract: A mechanism for incrementally advancing continuous paper forms comprising a pair of opposing cams which drive said forms therebetween, each said cam having a plurality of camming surfaces whose phase relative to the other said cam may be manually varied. For each rotation of said pair of cams, said forms are incremented a number of times equal to the total number of camming surfaces per one said cam where an increment is phase dependent.
    Type: Grant
    Filed: November 20, 1974
    Date of Patent: May 11, 1976
    Assignee: Burroughs Corporation
    Inventor: Anthony Horak
  • Patent number: 3953887
    Abstract: A low cost credit card reader is provided wherein the magnetic stripe on a stationarily positioned credit card is read by the spring powered transverse activation of a read head, and wherein the normal spring-related fluctuations in read head velocity are compensated for and offset by a rotatable member having a concentric circumference and a variably radiused spiraling circumference, the rotatable member being interposed between and cable interconnected with said spring and a translatable read head carrier, said spring and said rotatable member in association with an opposing airpot cooperating to provide the read head with a uniform controlled velocity of movement throughout each reading cycle.
    Type: Grant
    Filed: November 15, 1974
    Date of Patent: April 27, 1976
    Assignee: Burroughs Corporation
    Inventors: Lawrence P. Kobylarz, Ronald H. Mack
  • Patent number: 3953663
    Abstract: Relates to printed circuit boards which are devoid of electrical discontinuities likely to arise in the production of two-sided circuit boards having plated-through-holes and solder fillets therein for improving the electrical interconnections. Research disclosed that the cause of these discontinuities lay in the material of the boards surrounding the holes which either included entrapped gas or matter vaporizable under the high temperatures of the liquid solder applied to fill the holes and which impaired the attainment of reliable plated-through-hole connections. A vacuum evaporation operation is incorporated in the fabrication of printed circuit boards and the like and found highly useful and efficient in the production of reliable hole connections in the boards substantially reducing if not completely eliminating any need to apply solder touch-ups to the boards thereafter. Specifically, the boards are treated prior to the soldering of the plated-through-holes to a temperature of approximately 250.degree.
    Type: Grant
    Filed: January 2, 1973
    Date of Patent: April 27, 1976
    Assignee: Burroughs Corporation
    Inventor: William G. Kelhm, Jr.
  • Patent number: 3946254
    Abstract: An electronically controlled switch circuit for providing a single noise-free output pulse from the output of a modified master-slave flip flop circuit in response to an input signal alternately applied to set and clock pulse inputs from the output of a single pole double throw switch coupled therebetween.
    Type: Grant
    Filed: August 2, 1974
    Date of Patent: March 23, 1976
    Assignee: Burroughs Corporation
    Inventor: Lawrence A. Millben
  • Patent number: 3946285
    Abstract: A solenoid control system wherein the duration of actuation of a solenoid is a function of the workload imposed thereon so that the current to the solenoid is always turned off as soon as the solenoid plunger or armature is seated. Solenoid control logic responds to an external demand for the energization of the solenoid and enables a solenoid drive circuit which supplies current to the solenoid coil. The level of current builds in the solenoid coil until the solenoid plunger or armature is pulled in. The current continues to build as the solenoid plunger or armature is drawn in until that point at which the reluctance of the magnetic circuit is changing faster than the current in the solenoid coil is able to build. From this point until the solenoid plunger is seated, the current drops. As soon as seating has occurred, the reluctance ceases to change and the current once again begins to build in the solenoid coil.
    Type: Grant
    Filed: February 18, 1975
    Date of Patent: March 23, 1976
    Assignee: Burroughs Corporation
    Inventors: Jack Beery, Daniel A. Wisner
  • Patent number: 3942369
    Abstract: Resonant vibration is employed for imparting oscillations to a stressed wire, cable or metallic strip for the purpose of measuring its tension or for setting the vibrated member at a desired tension. A U-shaped magnetic resonator has an air gap to receive a stressed wire or cable and to impart vibrations thereto, the air gap being of such a width as to permit the received element to vibrate freely at its resonant frequency. The tension of the stressed element can be measured by varying the frequency of the resonator and noting when the condition of resonance exists or the tension of the element may be set by varying its tension while subjected to a steady predetermined pulsating magnetic flux field until the condition of resonance is noted. Either operation is performed in the absence of current flow through the stressed element.
    Type: Grant
    Filed: August 26, 1971
    Date of Patent: March 9, 1976
    Assignee: Burroughs Corporation
    Inventors: Edwin O. Roggenstein, Donald Allen Andrews, Chockalingam Manthiram
  • Patent number: 3938757
    Abstract: A constant speed reel-to-reel tape transport system is described including a drive motor having a pair of quadrature windings, and a motor supply producing a pair of square-wave motor-drive pulse trains of the same repetition rate, but 90.degree. out of phase, one train being supplied to each of the quadrature windings. The system further includes control means responsive to the change in the effective radius of one of the reels, for example the drive reel, for varying the repetition rate of the pulse trains, and thereby the speed of the motor, to maintain a constant linear tape speed.
    Type: Grant
    Filed: March 29, 1974
    Date of Patent: February 17, 1976
    Assignee: Burroughs Corporation
    Inventor: John E. Sargunar
  • Patent number: 3936925
    Abstract: A cotter pin having a conical circumferential recess is provided for securely attaching extrusions and the like to frame members in business machines and other apparatus, such recess serving to translatably carry a C-shaped spring member as between discrete positions of varying diameters within the recess, insertion of the pin through an aperture formed in the frame member, with a concave resilient washer disposed adjacent the head thereof, into a cylindrical channel formed in the extrusion serving to translate the C-shaped spring to a discrete position corresponding to the smallest diameter of the recess, to thereby permit ready ingress of the pin to a position in the channel wherein the head of the pin has effectuated a yielding action of the resilient washer, release of the pin upon completion of its insertion serving to translate the C-shaped spring to a discrete position within the recess where it is grippably impinged between a larger diametered portion of the recess and the walls of the cylindrical cha
    Type: Grant
    Filed: December 19, 1974
    Date of Patent: February 10, 1976
    Assignee: Burroughs Corporation
    Inventor: Dewey M. Simms, Jr.
  • Patent number: 3938089
    Abstract: An improved character reading system that utilizes two separate read devices: a first read device and a second read device in combination with a random access memory for storing each character read by the first read device, a memory control circuit for writing each character into the random access memory, and a comparison logic circuit for comparing each character as read by the second read device with the corresponding character stored in the random access memory. The system also includes a time-out counter for indicating when the last character has been read and a comparison logic timing circuit for controlling the comparison logic and triggering the random access memory read control circuit so as to provide the corresponding character to the comparison logic.
    Type: Grant
    Filed: February 25, 1974
    Date of Patent: February 10, 1976
    Assignee: Burroughs Corporation
    Inventors: Arvin D. McGregor, William E. Holmes
  • Patent number: 3936601
    Abstract: In order to provide for a digital data transmitting system of increased security, means are provided to dynamically alter the synchronous compare character between message transmissions. Included in the data communication system are: a character general for programmatically generating a synchronous compare character; a character storage register for storing the character so generated; and circuitry for moving the synchronous character from the storage register to the data transmission circuitry. By dynamically altering the synchronous character between message transmissions, it is possible to substantially enhance the security of the data transmission system.
    Type: Grant
    Filed: May 28, 1974
    Date of Patent: February 3, 1976
    Assignee: Burroughs Corporation
    Inventor: Carl Obeginski
  • Patent number: 3935372
    Abstract: An improved circuit modification method is provided for wire-wrapped electrical back planes such that changes in the back plane circuitry may be accomplished in areas remote from a production facility where wire-wrap equipment and highly skilled technicians may not be available, such method involving the preparation of a slip-on, post-terminal-compatible printed circuit board at the production facility, delivery of the printed circuit board to the remote area, and the slip-on attachment of the printed circuit board onto the post terminals of the back plane by a repairman who may be unfamiliar with the intricacies of the back plane and its wire-wrapped interconnections, said slip-on printed circuit board being inherently provided with whatever guidance may be required by the repairman in effectuating its installation on the back plane.
    Type: Grant
    Filed: August 2, 1974
    Date of Patent: January 27, 1976
    Assignee: Burroughs Corporation
    Inventors: Triplett: Gerald H., Edward A. Nicol, William G. Klehm, Jr.
  • Patent number: RE28701
    Abstract: Apparatus for dispensing items desired by the user in response to the introduction of a valid security card and additional predetermined information. The apparatus includes means for reading data from the security card, keyboard means for introducing additional information and electronic logic for determining the validity of the card and the validity of the predetermined information. A security card is provided including a first area to record the number of uses of said card and a second area to record the date of the last use. The apparatus includes logic to prevent dispensing and to retain the card if the card has been used more than a predetermined number of times or more than once within a predetermined time interval.
    Type: Grant
    Filed: September 30, 1974
    Date of Patent: January 27, 1976
    Assignee: Burroughs Corporation
    Inventors: John David Edwards, Leonard Perkins, John Henry Donald, Peter Lee Chappell, Sean Benjamin Newcombe, Malcolm David Roe