Patents Represented by Attorney James R. Ignatowski
  • Patent number: 4318085
    Abstract: Signal information is converted between analog and digital form in a two-step process employing conversion apparatus having stable, but not necessarily highly accurate components. The component tolerances on such conversion apparatus are much greater than those on such conversion apparatus are much greater than those normally allowed on conventional conversion apparatus of equal accuracy. In an A/D conversion, an analog signal is first converted into an (n+m)-bit digital word in a special purpose digital code unique to the specific A/D conversion apparatus. The (n+m)-bit word is then translated into an n-bit word in binary digital code in accordance with a predetermined relationship therebetween. In a D/A conversion, an n-bit digital word in a binary digital code is first translated into a corresponding (n+m)-bit digital word in the special purpose digital code.
    Type: Grant
    Filed: June 1, 1978
    Date of Patent: March 2, 1982
    Assignee: The Bendix Corporation
    Inventors: Arliss E. Whiteside, William G. Wolber
  • Patent number: 4318173
    Abstract: A scheduler for selecting and scheduling the tasks to be executed by a computer in a multiple computer system is disclosed. One scheduler is associated with each computer, and the schedulers coordinate their operation by sending and receiving messages. Each scheduler comprises a status table (604) storing the status of each task assigned to its computer, and a scheduling status table (608) storing the tasks recently selected for execution by the computer. The scheduler further includes a record data ready module (600) which records in the status table (604) the reception of the data variables required for the execution of each task. A completed task recorder (612) records which tasks have been executed by itself or any other computer in the system. An unselected/selected task recorder records the selection and unselection of tasks by other computers. A task unselector records the tasks which have been unselected by itself.
    Type: Grant
    Filed: February 5, 1980
    Date of Patent: March 2, 1982
    Assignee: The Bendix Corporation
    Inventors: Morris D. Freedman, Arliss E. Whiteside, Alexander M. Rothschild
  • Patent number: 4294518
    Abstract: An improved dual mode display optimized for image contrast in both the active and passive modes is described herein. The dual mode display comprises two tandemly disposed light valves in which a semi-transparent reflective surface disposed behind the first light valve display reflects incident light in the passive mode and transmits light from a back illuminating light source in the active mode. The optical density of the electro-responsive material in the first light valve is selected to optimize the image contrast of the image formed by reflected incident light and the optical density of the electro-responsive material of the second light valve cooperates with the electro-responsive material of the first light valve to optimize the contrast of the transmitted image in the active mode of operation.
    Type: Grant
    Filed: November 30, 1978
    Date of Patent: October 13, 1981
    Assignee: The Bendix Corporation
    Inventors: James M. O'Connor, George W. Goodrich
  • Patent number: 4261653
    Abstract: A light valve is formed of a plurality of spherical dipolar particles suspended in a matrix material. Each spherical dipolar particle has a unified body formed in three discrete symmetrical sections. A central section is configured to permit light transmission when in a first orientation with respect to a path of light travel, and generally not permit light transmission when in a second, transverse orientation with respect to the path of light travel. A pair of intermediate sections bound the central section and are formed of a transparent material having an electrical permittivity that varies through a range of values as a function of the frequency of an applied electric field. A pair of outer sections bounds the intermediate sections and are formed of a material having a relatively stable electrical permittivity within the range of values of the intermediate sections.
    Type: Grant
    Filed: May 26, 1978
    Date of Patent: April 14, 1981
    Assignee: The Bendix Corporation
    Inventor: George W. Goodrich
  • Patent number: 4240382
    Abstract: The invention is an electronic fuel control system for an internal combustion engine having a first capacitance which is charged to a value indicative of the engine's speed during a first rotational interval of the engine. At the end of the rotational interval, a potential indicative of the charge on the first capacitance is transferred to a second capacitance which is further charged at a predetermined rate during a second rotational interval. A comparator compares the value of the potential on the second capacitance with a signal indicative of the engine's load. The comparator generates a pulse width signal indicative of the engine's fuel requirements during the interval the potential on the second capacitance is less than the value of the load signal.
    Type: Grant
    Filed: May 1, 1978
    Date of Patent: December 23, 1980
    Assignee: The Bendix Corporation
    Inventor: Junuthula N. Reddy
  • Patent number: 4227775
    Abstract: A colloidal light valve having enhanced image contrast is disclosed. The colloidal light valve has a diffusely transmissive front window and a specially reflective surface on the rear substrate. A thin colloidal suspension of dichroic particles disposed between the window and the rear substrate is operative to change its optical density in the presence of an electrostatic field. In the preferred embodiment, transparent electrodes are disposed on the inner surface of the front window permitting an electrostatic field to be applied across the colloidal suspension in the regions immediately underlying the electrodes. The electrodes are arranged in the familiar multi-element bar pattern capable of forming alpha numerical characters.
    Type: Grant
    Filed: December 21, 1978
    Date of Patent: October 14, 1980
    Assignee: The Bendix Corporation
    Inventor: George W. Goodrich
  • Patent number: 4221974
    Abstract: A lumber inspection and optimization system is disclosed combining the speed of electro-optic scanning for flaw detection with electronic data manipulation and computation for optimizing the utilization of the lumber in accordance with an order entry list specifying the dimensions, grade and priority of products desired to be cut from each board inspected by the system. The system receives input data from an order entry device and an electro-optical scanner. Digital scan data from the electro-optical scanner is electronically processed to form a flaw data buffer containing the edge location of all the detected flaws enlarged to compensate for defective material usually surrounding each flaw. Optimization of the material is accomplished by electronically comparing the order entry data with the location of the flaws in the flaw buffer to generate cut line data indicative of where the board is to be cut.
    Type: Grant
    Filed: February 2, 1979
    Date of Patent: September 9, 1980
    Assignee: The Bendix Corporation
    Inventors: Paul A. Mueller, John R. Hartz, Elaine D. Pawlowski, M. David Freedman
  • Patent number: 4207472
    Abstract: A lumber inspection and optimization system is disclosed combining the speed of electro-optic scanning for flaw detection with electronic data manipulation and computation for optimizing the utilization of the lumber in accordance with an order entry list specifying the dimensions, grade and priority of boards desired to cut from each piece of lumber inspected by the system. The system receives input data from an order entry device and an electro-optical scanner. The digital scan data from the electro-optical scanner is electronically processed to form a flaw data buffer containing the edge location of all the detected flaws enlarged to compensate for defective material usually surrounding each flaw. Optimization of the material is accomplished by electronically comparing the order entry data with the location of the flaws in the flaw buffer to generate cut line data indicative of where the board is to be cut.
    Type: Grant
    Filed: August 14, 1978
    Date of Patent: June 10, 1980
    Assignee: The Bendix Corporation
    Inventors: Jerome M. Idelsohn, Paul A. Mueller, M. David Freedman, Raymond T. Hebert, Edward A. King
  • Patent number: 4199424
    Abstract: A shield for introducing fluid, such as the gas within the exhaust system of an internal combustion engine, to a sensing means such as a zirconium dioxide element of an oxygen concentration sensor. The shield forms a chamber which surrounds the element and contains a particulate trap having a preferred orientation with respect to the main stream flow for intercepting and diverting a portion of fluid from the main stream into a partially closed end of the chamber. The diverted fluid enters the chamber near the tip end of the zirconia element; the closely spaced chamber permits the fluid flow to be generally parallel to the surface of the element and directed from the tip end to the base or housing end of the element. The shield further contains an opening near the base of the element to permit fluid to exit the chamber.
    Type: Grant
    Filed: September 13, 1978
    Date of Patent: April 22, 1980
    Assignee: The Bendix Corporation
    Inventor: Bernard R. Teitelbaum
  • Patent number: 4198255
    Abstract: The invention is a multiorifice structure and method of manufacuture. The structure comprises a plurality of triangularly shaped orifices angularly disposed with respect to a common axis. The structure is formed by fusing together concentric alternating layers of cylindrical members and parallel rods angularly disposed with respect to the axis of the cylindrical members. The fused structure is sliced generally normal to its axis to produce a plurality of multiorifice wafers or discs. The interstices between the rods and the cylindrical members form a plurality of small triangularly shaped orifices particularly well suited to use as an atomizer for an internal combustion engine fuel injector valve.
    Type: Grant
    Filed: May 12, 1978
    Date of Patent: April 15, 1980
    Assignee: The Bendix Corporation
    Inventor: Garland E. Busch
  • Patent number: 4195599
    Abstract: The invention is an electronic fuel control system for an internal combustion engine having a first capacitance which is charged to a value indicative of the engine's speed during a first rotational interval of the engine. At the end of the rotational interval the charge on the first capacitance is transferred to a second capacitance which is further charged at a predetermined rate during a second rotational interval. A comparator compares the value of the charge on the second capacitance with a signal indicative of the engine's load. The comparator generates a pulse width signal indicative of the engine's fuel requirements during the interval the charge on the second capacitance is less than the value of the load signal.
    Type: Grant
    Filed: April 25, 1977
    Date of Patent: April 1, 1980
    Assignee: The Bendix Corporation
    Inventor: David G. Luchaco
  • Patent number: 4192189
    Abstract: A rate sensor is disclosd for use in applications requiring high reliability such as in aircraft or tank gun stabilization systems. The rate sensor consists of a sensor rotor supported within a volume of magnetic fluid contained in a sensor housing to which is applied a magnetic field, levitating the sensor rotor in a central location within the housing cavity. A plurality of sensor means are provided positioned about the axis of the sensor rotor detecting the relative movement between the sensor rotor and the sensor housing occurring upon rotation of the housing from which an output signal corresponding to the rate of change of rotation of the housing.
    Type: Grant
    Filed: October 2, 1978
    Date of Patent: March 11, 1980
    Assignee: The Bendix Corporation
    Inventor: Rex W. Presley
  • Patent number: 4184934
    Abstract: A shield for introducing fluid, such as the gas within the exhaust system of an internal combustion engine, to a sensing means such as a zirconium dioxide element of an oxygen concentration sensor. The shield forms a chamber which surrounds the element and contains a fluid diverter having a plurality of circumferential fluid receiving cavities adapted to divert a portion of fluid from a main stream of flow into a partially closed end of the chamber. The diverted fluid enters the chamber near the tip end of the zirconia element; the closely spaced chamber permits the fluid flow to be generally parallel to the surface of the element and directed from the tip end to the base or housing end of the element. The shield further contains an opening near the base of the element to permit fluid to exit the chamber.
    Type: Grant
    Filed: September 13, 1978
    Date of Patent: January 22, 1980
    Assignee: The Bendix Corporation
    Inventors: James D. Bode, Bernard R. Teitelbaum
  • Patent number: 4169388
    Abstract: An integrated spark plug-combustion pressure sensor capable of extended use in normal operation of an automobile. Thermally conductive gas sealing means are provided between the plug insulator and shell. A piezo-electric pressure sensor element is positioned to sense combustion pressure through changes in the stress of plug shell and is enclosed as an integral part of the plug for protection against the harsh engine environment.
    Type: Grant
    Filed: December 13, 1978
    Date of Patent: October 2, 1979
    Assignee: The Bendix Corporation
    Inventors: Bernard R. Teitelbaum, John P. Carrico
  • Patent number: 4166564
    Abstract: A multiorifice structure and a method of making the multiorifice structure is disclosed herein. The structure is made by fusing a plurality of parallel rods stacked in a regular geometric pattern. The interstices between the fused rods form a plurality of small orifices of a noncircular configuration which are ideally suited for atomizing a pressurized fluid. In the preferred embodiment, the multiorifice structure is a fuel atomizer for atomizing the fuel ejected from an automotive type fuel injection valve.
    Type: Grant
    Filed: May 24, 1978
    Date of Patent: September 4, 1979
    Assignee: The Bendix Corporation
    Inventor: William G. Wolber
  • Patent number: 4159703
    Abstract: An improved air assisted fuel atomizer is disclosed herein. The atomizer receives air from a source having a higher pressure than the output environment of the atomizer and fuel under pressure from a pulsed source. Each fuel pulse is injected tangentially into a circular fuel swirl chamber to form a rotating fuel ring concentric with air path through the atomizer. Fuel from the rotating fuel ring is gradually carried off by the air flow to produce uniformly distributed effectively continuous air/fuel mixture. In the preferred embodiment the air assisted fuel atomizer is embodied in an internal combustion engine, single point fuel injection system.
    Type: Grant
    Filed: December 10, 1976
    Date of Patent: July 3, 1979
    Assignee: The Bendix Corporation
    Inventor: Endre A. Mayer
  • Patent number: 4149089
    Abstract: An electro-optical scanner system for generating digital flaw data for a lumber inspection and optimization system is disclosed. The electro-optical scanner system includes an optical scanner generating analog scan data having frequency components indicative of the surface characteristics of the material being scanned. A dual quantizer separates the high frequency components of the scan data indicative of cracks, checks or splits from the low frequency components and converts both the high and low frequency components to a digital format. A digital filter removes extraneous noise from the digital high frequency scan data and a scanner interface encodes the digital high frequency and digital low frequency data in a predetermined multi-bit data byte format which simplifies data manipulation for subsequent flaw analysis by a computer.
    Type: Grant
    Filed: July 22, 1977
    Date of Patent: April 10, 1979
    Assignee: The Bendix Corporation
    Inventors: Jerome M. Idelsohn, Paul A. Mueller, M. David Freedman, Raymond T. Hebert
  • Patent number: 4144747
    Abstract: The invention is a single crystal force transducer in which the crystal is simultaneously resonated in two different modes having substantially the same frequency-temperature characteristics and different frequency-force characteristics. The difference in the change between the two resonant frequencies with a force applied to the crystal is therefore a temperature compensated signal indicative of the applied force. In the preferred embodiment the two resonant modes are anharmonic modes having a plurality of antinodes angularly disposed to each other.
    Type: Grant
    Filed: January 30, 1978
    Date of Patent: March 20, 1979
    Assignee: The Bendix Corporation
    Inventor: Walter F. Datwyler, Jr.
  • Patent number: 4141326
    Abstract: Disclosed herein is a closed loop fuel control system for a hydrogen fuelled engine embodying a hydrogen sensor in the exhaust manifold to provide a feedback signal indicative of the quantity of unburned hydrogen in the engine's exhaust. The system electronically controls or trims the fuel delivery to the engine in response to signals indicative of the engine's operating parameters and the signal generated by the hydrogen sensor to maintain the concentration of hydrogen in the exhaust at a predetermined level.
    Type: Grant
    Filed: March 11, 1977
    Date of Patent: February 27, 1979
    Assignee: The Bendix Corporation
    Inventor: William G. Wolber
  • Patent number: 4134106
    Abstract: An absolute resolver digitizer for a numerical control system generating a digital number indicative of the absolute angular position of a resolver's rotor within a given revolution is disclosed herein. The resolver digitizer comprises a reference generator generating resolver excitation signals and a digital number indicative of the phase of the generated excitation signals and a resolver follower generating a digital number indicative of the sum of phase of the excitation signal generated by the reference generator and the angular position of the resolver's rotor. Subtraction of the digital number generated by the reference generator from the digital number generated by the resolver follower produces a digital number indicative of the resolver's absolute position within a given revolution. This subtraction may be performed by a separate circuit within the absolute resolver digitizer or may be performed by the computer associated with the numerical control system.
    Type: Grant
    Filed: December 16, 1976
    Date of Patent: January 9, 1979
    Assignee: The Bendix Corporation
    Inventor: William R. Hungerford