Patents Represented by Attorney James R. Ignatowski
  • Patent number: 4381672
    Abstract: A rotation sensor having a vibrating cantilever beam is disclosed herein. The sensor comprises an integral single crystal silicon cantilever beam and support structure, an oscillator circuit for generating an electrical signal vibrating the cantilever beam at or near its natural resonant frequency and a piezoresistive element formed at the base of the base of the vibrating beam. The piezoresistive element is only sensitive to the stresses induced in the beam due to the rotation of the beam about an axis parallel to its length.
    Type: Grant
    Filed: March 4, 1981
    Date of Patent: May 3, 1983
    Assignee: The Bendix Corporation
    Inventors: James M. O'Connor, David M. Shupe
  • Patent number: 4380800
    Abstract: An engine roughness sensor for generating speed normalized digital roughness signals indicative of the variations in magnitude between successive torque impulses imparted to the engine's crankshaft by measuring the period or time it takes the crankshaft to rotate through the same angle for each torque impulse is disclosed herein. The digital roughness signal is normalized as a function of engine speed by dividing the measured magnitude of each torque impulse by a signal indicative of the engine speed to reduce the magnitude of operator induced variations in the generated roughness signals. In an alternate embodiment, the disclosed engine roughness sensor generates a second difference roughness signal which is the difference between the sequentially generated roughness signals.
    Type: Grant
    Filed: September 19, 1980
    Date of Patent: April 19, 1983
    Assignee: The Bendix Corporation
    Inventor: John R. Wilkinson
  • Patent number: 4376614
    Abstract: A propeller brake for a twin spool turbo-prop engine which permits the propeller to be locked in a stationary position with the engine running is disclosed. The propeller brake has a hydraulically actuated friction brake and hydraulically actuated locking mechanism rotatably connected to the engine spool turning the propeller. The friction brake stops the propeller from rotating in response to an external command. A hydraulic signal indicating the propeller has stopped rotating actuates the mechanical lock holding the propeller in a stationary position. A safety latch prevents the mechanical lock from being actuated in event of a hydraulic pressure or engine failure in flight.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: March 15, 1983
    Assignee: The Bendix Corporation
    Inventor: Frank Woodruff
  • Patent number: 4376660
    Abstract: A method for inducing superplastic properties in nonsuperplastic materials, metals or alloys, by mixing in powder form, the nonsuperplastic material with a second alloy having superplastic characteristics. The powder mixture is compacted into a billet and superplastically formed. The grain boundaries of the nonsuperplastic material are subsequently restored by heating the formed billet to a temperature slightly below the melting point of the second alloy.
    Type: Grant
    Filed: March 24, 1982
    Date of Patent: March 15, 1983
    Assignee: The Bendix Corporation
    Inventor: Kamal E. Amin
  • Patent number: 4375994
    Abstract: The invention is a method for inducing superplastic properties in nonsuperplastic metal and metal alloy powders by adding to such powders a small quantity of pure metal capable of alloying with the nonsuperplastic material to form a eutectic having superplastic properties. The powder is initially heated to the melting temperature of the desired eutectic to form the superplastic eutectic at the grain boundaries of the nonsuperplastic material. After forming, the powder is heat soaked to further dissolve the pure metal, destroying the formed eutectic and restoring the natural grain boundaries of the nonsuperplastic material.
    Type: Grant
    Filed: March 24, 1982
    Date of Patent: March 8, 1983
    Assignee: The Bendix Corporation
    Inventor: Kamal E. Amin
  • Patent number: 4375668
    Abstract: A closed loop timing optimization control for an internal combustion engine closed about the instantaneous rotational velocity of the engine's crankshaft is disclosed herein. The optimization control computes from the instantaneous rotational velocity of the engine's crankshaft, a signal indicative of the angle at which the crankshaft has a maximum rotational velocity for the torque impulses imparted to the engine's crankshaft by the burning of an air/fuel mixture in each of the engine's combustion chambers and generates a timing correction signal for each of the engine's combustion chambers. The timing correction signals, applied to the engine timing control, modifies the time at which the ignition signal, injection signals or both are generated such that the rotational velocity of the engine's crankshaft has a maximum value at a predetermined angle for each torque impulse generated optimizing the conversion of the combustion energy to rotational torque.
    Type: Grant
    Filed: September 15, 1980
    Date of Patent: March 1, 1983
    Assignee: The Bendix Corporation
    Inventors: Chun-Keung Leung, John J. Schira, Edwin A. Johnson
  • Patent number: 4367715
    Abstract: A distributor injection pump for diesel engines is disclosed. The pump includes a hydraulically balanced distributor head housing the moving parts of a cam actuated opposed piston injection pump rotatably driven in synchronization of the engine. A single solenoid valve disposed along the spill path of the injection pump controls the timing and duration of the fuel injection pulses generated at each of the pump's distributor output ports.
    Type: Grant
    Filed: December 17, 1980
    Date of Patent: January 11, 1983
    Assignee: The Bendix Corporation
    Inventor: Edwin B. Watson
  • Patent number: 4357925
    Abstract: A distributor injection pump for diesel engines is disclosed. The pump includes a hydraulically balanced distributor head housing the moving parts of a cam actuated opposed piston injection pump rotatably driven in synchronization of the engine. A single solenoid valve disposed along the spill path of the injection pump controls the timing and duration of the fuel injection pulses generated at each of the pump's distributor output ports.
    Type: Grant
    Filed: December 17, 1980
    Date of Patent: November 9, 1982
    Assignee: The Bendix Corporation
    Inventor: Frank Woodruff
  • Patent number: 4357662
    Abstract: Closed loop timing and fuel distribution controls for an internal combustion engine operative to control the timing and fuel delivery to each engine combustion chamber is disclosed herein. The closed loop timing and fuel distribution controls are closed about the instantaneous rotational velocity of the engine's output shaft and generate timing and fuel correction signals operative to modify the timing functions of the engine as well as the quantity of fuel delivered to each of the engine's combustion chambers. The control generates from the crankshaft's instantaneous rotational velocity a profile of each torque impulse imparted to the engine's output shaft and computes the phase angle signal indicative of the phase angle of each torque impulse to generate a timing correction signal indicative of the difference between the computed phase angle signal and a desired phase.
    Type: Grant
    Filed: September 15, 1980
    Date of Patent: November 2, 1982
    Assignee: The Bendix Corporation
    Inventors: John J. Schira, Chun-Keung Leung
  • Patent number: 4356546
    Abstract: A Fault-Tolerant Multi-Computer System for control applications is disclosed. The system has a plurality of Computers (10a-10n), each having an assigned set of tasks which it is capable of executing. No one Computer in the system acts as a master and no one Computer executes all of the tasks. Communication between the Computers is by individual communication links (16, 18, 20) over which each Computer sends information directly to all other Computers in the system. Each Computer comprises an Applications Computer (100) and an Operations Controller (200). The Operations Controller receives messages over the communication links and selects, from the assigned tasks, the tasks to be performed by the associated Applications Computer. Each Operations Controller includes a fault handler which checks the messages received from the other Computers. The fault handlers send and receive error messages, over the communication links, to assist in the identification of a faulty Computer.
    Type: Grant
    Filed: February 5, 1980
    Date of Patent: October 26, 1982
    Assignee: The Bendix Corporation
    Inventors: Arliss E. Whiteside, Morris D. Freedman, Alexander M. Rothschild, Omur Tasar
  • Patent number: 4355917
    Abstract: A fastener for securing a starter jaw coupling member to the accessory shaft of an internal combustion engine is disclosed. The fastener, attached to the starter jaw coupling member is inserted into an internally splined bore formed in the end of the accessory shaft. A pair of pivotally connected arms are rotated in opposite direction with a forward arcuate motion by advancing a bolt passing axially through the starter jaw coupling member. The rotated arms engage the rear ends of the accessory shaft's internal splines locking the starter jaw coupling member securely to the end of the accessory shaft.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: October 26, 1982
    Assignee: The Bendix Corporation
    Inventor: Dennen J. Bunger
  • Patent number: 4347571
    Abstract: An integrated closed loop engine control is disclosed in which the fuel delivery and timing functions of the engine are closed about a measurement of the engine's instantaneous rotational velocity. Signals indicative of the profile of each torque impulse imparted to rotary output member of the engine from the burning of an air/fuel mix in the engine's combustion chambers are generated and electrically analyzed to detect perturbation caused by deviations of at least two different engine operational parameters from desired values. Feedback correction signals indicative of the magnitude of the detected perturbations are generated to correct the fuel delivery and timing functions of an engine control to minimize the difference between the actual operating parameters and the desired values.
    Type: Grant
    Filed: September 15, 1980
    Date of Patent: August 31, 1982
    Assignee: The Bendix Corporation
    Inventors: Chun-Keung Leung, William R. Seitz
  • Patent number: 4342083
    Abstract: A communication system for a multiple computer or distributed computing system is disclosed. The communication system comprises a set of individual communication links. Each computer (10a through 10n) has its own communication link (16, 18, and 20), over which it alone can transmit messages to every other computer in the system. Each computer (10a through 10n) includes a plurality of receivers, one receiver for each computer in the system. Each receiver is connected to one of the communication links, and only receives messages transmitted by the single computer which transmits messages over that communication link.
    Type: Grant
    Filed: February 5, 1980
    Date of Patent: July 27, 1982
    Assignee: The Bendix Corporation
    Inventors: Morris D. Freedman, Arliss E. Whiteside
  • Patent number: 4333075
    Abstract: A method and apparatus for converting between analog signals and corresponding digital signals that is accurate relative to the actual value of the input signal, and not relative to the upper limit on the analog input signal. The method and apparatus are disclosed in terms of a serial-feed-back A/D converter that performs an A/D conversion through a plurality of cycles equal in number to the number of bits in the digital output word. In each cycle a comparison voltage is tested to determine if the bit output for the cycle is high or low. The comparison voltage is the amplified difference of the comparison voltage for the preceding cycle and another reference signal. The scale factor for the amplification of the difference between the two signals is one value if the bit value for the preceding cycle was high, and another complementary value if the bit value for the preceding cycle is low.
    Type: Grant
    Filed: March 27, 1980
    Date of Patent: June 1, 1982
    Assignee: The Bendix Corporation
    Inventor: Arliss E. Whiteside
  • Patent number: 4333144
    Abstract: A task communicator for each computer in a multiple computer system is disclosed. The task communicator provides communication of data values between cooperating tasks executed by different computers. The task communicator comprises a data values table (804) storing the current data values required for the execution of each task assigned to its computer. A store data value module (802) which stores the data values received from the other computers in the data values table. A task dispatcher (806) which copies the data values required for the execution of a selected task into a task input table (810). A release task module (814), which releases for execution the identified task and data values stored in the task input table. A task output table (812) storing the values of the data resulting from the execution of each task by its own computer.
    Type: Grant
    Filed: February 5, 1980
    Date of Patent: June 1, 1982
    Assignee: The Bendix Corporation
    Inventors: Arliss E. Whiteside, Morris D. Freedman, Omur Tasar
  • Patent number: 4330826
    Abstract: The invention is a synchronizer for synchronizing the operation of the computers in a multiple computer system. One synchronizer is associated with each computer, and it regularly generates signals to initiate the operations in its own computer which must be synchronized among the computers. The synchronizer comprises a start synchronizer module (458), a sampling data table including a sampling timer (460), a check sampling timer module (464), and a find sampling number agreement module (466). The sampling period timer times a sampling period having a predetermined time interval. At the end of each sampling period, the check sampling timer module sends a sampling number message containing a new sampling number. The find sampling number agreement module (466) generates a voted sampling number when sampling number messages received from like synchronizers in a predetermined number of computers contain the same sampling number.
    Type: Grant
    Filed: February 5, 1980
    Date of Patent: May 18, 1982
    Assignee: The Bendix Corporation
    Inventors: Arliss E. Whiteside, Morris D. Freedman
  • Patent number: 4327689
    Abstract: In an electronic fuel injection system for an internal combustion engine an oxygen sensor tests the exhaust gas for oxygen content and provides a feedback signal for fuel/air mixture control. During cold start and engine warm-up the oxygen sensor is inoperative and mixture is controlled as a function of engine coolant temperature. During this phase the mixture may be excessively lean causing rough engine running. Means responsive to cylinder misfirings temporarily enrich the mixture to eliminate engine roughness.
    Type: Grant
    Filed: October 3, 1979
    Date of Patent: May 4, 1982
    Assignee: The Bendix Corporation
    Inventor: Todd L. Rachel
  • Patent number: 4327527
    Abstract: An apparatus for adjusting the torsional output of a flexible pivot assembly is provided. The apparatus precisely rotates the flexible pivot to a maximum rotational angle at which the torsional output of the flexible pivot is trimmed to a predetermined value by an air abrasive unit. After the trimming the flexible pivot is rotated to an intermediate rotational angle and its torsional output rechecked. Electronic circuits are included to automatically control the air abrasive unit to trim output torque of the flexible pivot to its desired value, and to signify the torsional output at the intermediate rotational angle is within specifications.
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: May 4, 1982
    Assignee: The Bendix Corporation
    Inventors: Frederick A. Seelig, William E. Coman
  • Patent number: 4323966
    Abstract: An operations controller for each computer in a multiple computer system is disclosed. Each operations controller controls the operations of its associated computer, so that all of the computers cooperate to perform system functions in a fault-tolerant manner. Each operations controller comprises a fault handler (204), a scheduler (206), a task communicator (208), plus a transmitter (212) and requisite receivers (202) which receive and send messages to all the other computers in the system. The fault handler (204) checks each message received and decides which computers are operating correctly and which are faulty. A scheduler (206) selects each task its own computer will execute, from the tasks assigned to its own computer. A task communicator (208) assembles the data values required for the execution of the selected task, and forwards this data to the computer for execution.
    Type: Grant
    Filed: February 5, 1980
    Date of Patent: April 6, 1982
    Assignee: The Bendix Corporation
    Inventors: Arliss E. Whiteside, Morris D. Freedman, Omur Tasar, Alexander M. Rothschild
  • Patent number: 4321666
    Abstract: A fault handler for each computer in a multiple computer system is disclosed, which excludes faulty computers from participating in the operation of the multiple computer system. The fault handler comprises one or more message checkers (216, 218, 220, 222 and 224) and a fault tolerator (228). In the disclosed embodiment, the fault handler further includes a synchronizer (226) for synchronizing the operation of the associated computer with the operation of the other computers in the system. The checker modules check each message received from the other computers, and forward the messages to the fault tolerator. From error messages received from the other computers and errors detected by its own checker modules, the fault tolerator (228) decides which computers are faulty and discards the messages received from those computers. Only messages received from non-faulty computers are passed on for further processing.
    Type: Grant
    Filed: February 5, 1980
    Date of Patent: March 23, 1982
    Assignee: The Bendix Corporation
    Inventors: Omur Tasar, Arliss E. Whiteside, Morris D. Freedman