Patents Represented by Law Firm Krass, Young & Schivley
  • Patent number: 4498016
    Abstract: A digital processor implemented electronic governor for engine-generator units including a first control loop for producing a speed error and controlling fuel delivery setting as a function thereof and a second control loop for detecting rack error and producing a field excitation current control signal as a function thereof. Power dips and overruns are voided by modifying rack error as a function of engine acceleration. Means are provided for developing speed errors and rack control signals despite a breakdown in the rack position indicator. Open loop lower power setting controls are provided. Wheel-slip control, power limiting and variable acceleration functions are provided.
    Type: Grant
    Filed: August 4, 1983
    Date of Patent: February 5, 1985
    Assignee: Caterpillar Tractor Co.
    Inventors: Walter E. Earleson, Dennis M. King, Michael E. Moncelle
  • Patent number: 4493968
    Abstract: The invention pertains to a welding system having automatic groove tracking and adaptive groove filling capabilities. Data produced by a coordinated laser spot projector (10) and TV-scanner (12) combination is determined to an Intel 8085 computer (28) to provide a substantially continuous analysis of groove locations in a three-axis coordinate system as well as groove depth and area. Location information is fed to an LSI-11 computer (38) to control the tracking function through coordinate axis servo-type drives (46) and to control a fourth-axis or "swing" function which provides freedom between the welding torch (14) and the optical system (10, 12) which leads the torch by several inches. The groove depth and area information is also fed to the LSI-11 to control the welding parameters, i.e.; deposition rate and voltage and produce the desired weld along the groove.
    Type: Grant
    Filed: July 13, 1983
    Date of Patent: January 15, 1985
    Assignee: Caterpillar Tractor Co.
    Inventor: Ronald D. Brown
  • Patent number: 4458132
    Abstract: A resistance-type welder employing a pulsed power supply and a pair of opposed electrodes between which a workpiece may be clamped under pressure, includes a microcomputer based control system for allowing precise selection and control of welding sequences such as the duration during which the workpiece is clamped, the duration during which current is supplied to the electrodes and the duration during which the workpiece remains clamped between the electrodes after current flow is terminated. A plurality of switchable input devices allows data corresponding to a plurality of process variables to be input to a random access memory. A central processor enabled by a manually operable control switch produces control signals for operating a control and firing circuit in accordance with programmed instructions and the data stored in the random access memory in order to control each step in a welding cycle for precise time periods.
    Type: Grant
    Filed: November 10, 1980
    Date of Patent: July 3, 1984
    Assignee: Weldex, Inc.
    Inventors: Roger G. Reynolds, Thomas S. Holtaway
  • Patent number: 4449519
    Abstract: A multi-segmented endoscope (20) includes at least two sections (22), (24) which are detachably coupled together to provide endoscopes of varying lengths and openings for use during different stages of the birth process. The end (26) of the smaller section (22) is angled complementarily with respect to the fetus to insure a good seal to prevent contamination of blood samples taken from the infant.
    Type: Grant
    Filed: May 17, 1982
    Date of Patent: May 22, 1984
    Assignee: Transidyne General Corporation
    Inventor: Robert J. Sarrine
  • Patent number: 4449217
    Abstract: Process for control of the transmission of PCM signals between connectors of a PCM time-division multiplex communication network in a conference service and circuit for carrying out the process.
    Type: Grant
    Filed: February 12, 1981
    Date of Patent: May 15, 1984
    Assignee: Nixdorf Computer AG
    Inventor: Joachim W. Simon
  • Patent number: 4446585
    Abstract: A rugged and aesthetically pleasing cabana construction for a portable toilet is disclosed. Resilient plastic walls of the structure are connected to W-shaped corner extrusions to provide the cabana with indented corners to protect them from physical damage. The walls are secured in such a manner so as to minimize shear forces on the fasteners securing the edges of the walls to the corner extrusions. A cover hinged to the effluent holding tank is provided with an integral toilet seat. Preferably, the walls are co-extruded polyethylene plastic sheets with a double useable face, the inner faces of which have the same matching color to provide the interior of the cabana with a uniform aesthetically pleasing appearance while allowing the exterior of the cabana to be multicolored if desired.
    Type: Grant
    Filed: January 22, 1982
    Date of Patent: May 8, 1984
    Assignee: Sani-Jon Mfg., Inc.
    Inventors: George W. Harding, Ronald E. Sears
  • Patent number: 4443848
    Abstract: A digital processor including both macro and micro instruction generators. The micro-instruction generator comprises a sequencer for generating instruction addresses, a memory for generating instructions in response to the addresses and a pipeline register adapted to receive the instructions for execution. The sequencer operates at a constant CLK 1 rate while the pipeline register operates at a variable CLK 2 rate; i.e., the occurrence of a branch instruction in the pipeline register operates to inhibit CLK 2 for one CLK 1 time so as to prevent loading for execution of the aborted sequential instruction during the loading of a new non-sequential instruction address. CLK 2 resumes upon the next CLK 1 signal to resume sequential operation. Special branch instructions are utilized to fetch macro-instructions from a pipelined system of macro-instruction registers. A two-tier synchronous arbitration system for memory requests is also disclosed.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: April 17, 1984
    Assignee: Nixdorf Computer Corporation
    Inventor: John T. Gehman
  • Patent number: 4441653
    Abstract: A thermally actuated damper for insertion in the flue pipe of furnaces consists of a cylindrical section of pipe having a diametrically extending bar fixed across its interior. The bar supports a pair of identical, semi-circular vanes formed of a bi-metallic laminate which project in a common direction from the bar. When the furnace is operating the hot flue gases cause the vanes to bend into abutment with one another so that they extend longitudinally along the flue pipe and allow substantially unrestricted flow of vent gases. When the furnace is off the cooling blades bend outwardly, toward the walls of the flue pipe, substantially blocking the flow of gases through the flue so that the warm air from the heated space is not drawn up the flue.
    Type: Grant
    Filed: June 11, 1981
    Date of Patent: April 10, 1984
    Assignee: Paragon Resources, Inc.
    Inventor: George Grudich
  • Patent number: 4441207
    Abstract: A pipeline of programmable serial neighborhood stages is used to automatically check for adherence to a set of predetermined geometrical constraints or design rules used in the fabrication of electronic components such as integrated circuit devices. In a disclosed embodiment, bit-map representations of several IC masks are superimposed in one composite image matrix for processing in the pipeline. Advantages in processing speed, especially for design rule checking requiring data from more than one mask, are obtained since all necessary data is available to the stages in the pipeline.
    Type: Grant
    Filed: January 19, 1982
    Date of Patent: April 3, 1984
    Assignees: Environmental Research Institute of Michigan, Regents of the University of Michigan
    Inventors: Robert M. Lougheed, Trevor N. Mudge
  • Patent number: 4440451
    Abstract: A plurality of spaced ramps are formed in the inner surface of a vehicle hub interiorly of the bearings to facilitate removal thereof. Preferably, the hub is designed for use in an automatic tire inflation system and the ramps extend radially outwardly from a portion in the hub for receiving sealing rings cooperating to form an air passageway through the wheel assembly.
    Type: Grant
    Filed: September 28, 1982
    Date of Patent: April 3, 1984
    Assignee: AM General Corp.
    Inventors: Fred L. Goodell, Michael J. Ellison
  • Patent number: 4438940
    Abstract: A combination sled and shelter device for use while ice-fishing or the like comprising a drumshaped container body disposed on a pair of snow runners and having doors in the cylindrical drum surface. To use the device as a shelter, one stands the device on the runner ends and sits within the container body.
    Type: Grant
    Filed: April 14, 1982
    Date of Patent: March 27, 1984
    Inventor: Frederick J. Hunt
  • Patent number: 4438877
    Abstract: A helmet restraining device employing a seat strap which is pulled taut over the top surface of the saddle-seat of a vehicle and anchored at either end of the strap to the seat and an elliptically shaped restraining cup which is relatively elastic along the major axis of the elipse. A motorcycle helmet or the like is placed on the seat, over the seat strap, and the restraining cup is stretched over the helmet, the elliptical cup enveloping a substantial portion of the helmet. The two ends of the restraining cup are then secured to connector rings located on the seat strap, anchoring the helmet therebetween.
    Type: Grant
    Filed: June 13, 1983
    Date of Patent: March 27, 1984
    Inventor: William S. Jackson
  • Patent number: 4437374
    Abstract: A ram driven tube cutting apparatus of the double cut type in which sections of tubing are successively severed from a continuous length thereof by a notching cut followed by a severing cut, includes improved mechanism for clamping the tubing during the cutting process. A pair of opposed, complemental die jaws are mounted on slides controlled by spaced cam followers carried by the slides. A reciprocating wedge cam engages and forces the cam followers apart to move the slides thereby closing the jaws on the tubing. One of the cam followers comprises a roller mounted on an eccentric shaft which may be selectively rotated to adjust the clearance between the die jaws. The other cam follower is spring loaded toward the cam within a slide mounting provided in its slide and automatically shifts to an overload position to avoid damage to the mechanism when foreign objects become lodged between the die jaws.
    Type: Grant
    Filed: January 28, 1983
    Date of Patent: March 20, 1984
    Inventor: John J. Borzym
  • Patent number: 4436610
    Abstract: Apparatus is disclosed for measuring the electrochemical activity of a liquid, for example, the hydrogen ion activity or pH value of blood. A disposable cartridge includes spaced indicating and reference electrodes which develop electrical properties as a function of the electrochemical activity. The cartridge carries a capsule containing an electrolyte solution. A machine for measuring the electrochemical activity includes a socket in a pivoting door for receiving the cartridge. When the door is pivoted into a closed position, the capsule is automatically crushed thereby covering the electrodes with the solution. The breaking of the capsule triggers an electronic measurement of the resultant electrical properties that develop between the two electrodes. This calibration factor is stored and used to compute the electrochemical characteristics of the sample when it is introduced into the cartridge to cover the indicating electrode.
    Type: Grant
    Filed: December 13, 1982
    Date of Patent: March 13, 1984
    Assignee: Transidyne General Corporation
    Inventors: Steven E. Enzer, Robert J. Sarrine
  • Patent number: 4434950
    Abstract: A device for winding-on sheets of material (3), particularly sheets of paper and lengths of textile, includes a winding-on device and a feed unit (6,8) coupled with the winding-on spindle (4) of the winding-on device through a belt drive (21,22,26), which unit discontinuously feeds the material sheet (3) to the winding-on device. The belt (22) of the belt drive (21,22,26) is elastically extensible in its lengthwise direction, while the winding-on spindle (4) is joined with one part (15) of a locking catch (15,13) the other part (13) of which is intermittently movable into its released position by means of a driver arrangement (9) joined with the feed unit (6,8). The device is particularly suitable for winding-on paper sheets in print units.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: March 6, 1984
    Inventors: Wilhelm Nunnerich, Peter Schmidt
  • Patent number: 4433274
    Abstract: A home security and garage door operator system includes a gas sensor for detecting the level of toxic gas in the garage. When the gas level exceeds a predetermined threshold the garage door is automatically opened. Lock out circuitry is provided for preventing the door from being accidentally closed as long as the gas sensor detects an excessive level of toxic gas in the garage. A two button transmitter is used to sequentially close the garage door and set a security alarm subsystem. Warning devices are activated if the security alarm is attempted to be set without the garage door and windows in the home being closed. Once the security alarm has been set, the lock out circuitry also disables the garage door motor control circuitry until the security alarm is first deactivated. The transmitter generates a digital pulse train according to a preselected code, with the operation of the dual buttons changing the state of a particular control bit in the pulse train.
    Type: Grant
    Filed: July 27, 1981
    Date of Patent: February 21, 1984
    Inventor: Dean C. Duhame
  • Patent number: 4431043
    Abstract: An automatic tire inflation/deflation system for a vehicle (10) is disclosed. Air passageways for the pressurize air are provided internally through the wheel assemblies without cutting into load bearing members. A rotating seal is provided by way of a pair of sealing rings (52,54) located inboard of the hub bearings (32,33) to protect the seals from adverse environmental conditions. A kit for retrofitting vehicles to include an automatic tire inflation/deflation system is also disclosed. Ramp surfaces (90, 91, 92) formed in the hub (30') are provided to facilitate removal of the bearing assemblies (32, 33).
    Type: Grant
    Filed: October 16, 1981
    Date of Patent: February 14, 1984
    Assignee: AM General Corporation
    Inventors: Fred L. Goodell, Michael J. Ellison
  • Patent number: 4429805
    Abstract: A straight sided injection molded plastic container and lid combination wherein the cylindrical sidewall of the container exhibits a neck section of reduced interior diameter and structure in said neck section for reinforcement thereof in a direction parallel to the longitudinal axis of the container.
    Type: Grant
    Filed: May 10, 1982
    Date of Patent: February 7, 1984
    Assignee: Letica Corporation
    Inventor: Ilija Letica
  • Patent number: RE31549
    Abstract: A unitary metal vent apparatus for securement to the roof of a building is formed from a single aluminum disk, into the form of a first flange portion, a tubular second portion, a cap-shaped third portion, and a vent hole portion disposed between the tubular portion and the cap portion. Preferably, the apparatus is produced by spinning a tubular protrusion in an aluminum disk, drilling vent holes, and collapsing the end of the tubular protrusion to form a cap-shaped portion.
    Type: Grant
    Filed: October 3, 1980
    Date of Patent: April 10, 1984
    Assignee: Charles Bonnici
    Inventors: James W. Ballard, Larry R. Ballard
  • Patent number: D273647
    Type: Grant
    Filed: August 24, 1981
    Date of Patent: May 1, 1984
    Inventor: Richard Kandarian