Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 5212644 | Incremental rate locker system The remote control units of a electronic centralized locker system are programmed with incremental rate parameters, such that the rental fee for each locker increases as the time period during which the locker is used increases. In order to implement the ... | 05/18/1993 |
| 5210701 | Apparatus and method for designing integrated circuit modules A method and apparatus for generating a multiport static random-access memory (SRAM) in an integrated circuit. The apparatus includes a tape drive for accepting parameters describing a particular technology process and a keyboard for accepting user specif... | 05/11/1993 |
| 5210702 | Apparatus for remote analysis of vehicle emissions A gas analysis device for the remote detecting, measuring and recording of NOx, CO, CO2, HC and H2 O levels from the exhaust of moving motor vehicles. It utilizes a source of collimated infrared and ultraviolet radiation a... | 05/11/1993 |
| 5208765 | Computer-based method and system for product development A method and structure for monitoring product development is provided. In accordance with the method of this invention the product development is divided into a plurality of stages. Each stage in turn includes a set of requirements which must be completed... | 05/04/1993 |
| 5191533 | Franking machine To obviate the need for reading a postage rate table for franking purposes, its content is stored in the memory of the central control unit of the franking machine and the franking value is calculated in the computer of the central control unit on the bas... | 03/02/1993 |
| 5184310 | Signal generation circuit Pulse wave modulation waveform signals of three-phase alternating-current necessary for driving a compressor used in an air-conditioner incorporating an inverter circuit are, for example, generated by preliminarily storing the reference waveform data in a... | 02/02/1993 |
| 5179524 | Fan-powered mixing box assembly A fan-powered mixing box assembly through which conditioned air is supplied to a plurality of zones is controlled by a programmable fan-box monitor. The assembly comprises a mixing box, a multi-speed fan and a heating element having several stages. The mo... | 01/12/1993 |
| 5177687 | Insertion machine with postage categorization and selective merchandising In an insertion machine a track 20 moves groups of items past feed station 31, 32, 33, 34, 35, 36, 37, 38, 39, during respective machine cycles. The feed stations selectively feed items onto the tracks 20 for inclusion with a group of items and eventual s... | 01/05/1993 |
| 5175695 | UL trasonic measuring apparatus An ultrasonic measuring apparatus comprising a master unit and a slave unit each having a respective transmitter circuit for transmitting towards the other unit a burst of ultrasound and each having a respective receiver circuit to detect the burst of ult... | 12/29/1992 |
| 5175693 | Method of designing semiconductor integrated circuit device A method for designing a semiconductor integrated circuit device using a standard cell or gate array method. A chip is divided into a plurality of blocks to realize a hierarchical layout design in units of blocks. A first scheme is preferentially dividing... | 12/29/1992 |
| 5173862 | Envelope stamp imprinting device There is provided a device for printing an impression of both postal codes and postage stamps on envelopes which comprises a frame having a slot to receive an envelope so that the envelope is in position to be appropriately printed with an impression of a... | 12/22/1992 |
| 5173864 | Standard cell and standard-cell-type integrated circuit A standard cell for standard-cell type integrated circuits, designed with a computer, includes a basic functional circuit, for example, a flip-flop circuit and a signal delay circuit connected to the basic functional circuit. The signal delay circuit is l... | 12/22/1992 |
| 5172331 | Apparatus and method for effecting exposure of sample to charged particle beam An apparatus includes an optical unit for effecting an exposure of a sample to a charged particle beam and a control unit for effecting a deflection control of the charged particle beam. The control unit calculates a basic waveform based on the scanning o... | 12/15/1992 |
| 5170367 | Nondestructive determination of phase fractions of composite materials The fractions of the phases of a composite material are determined utilizing a calibration relationship between at least one nondestructively measured quantity and a destructively measured phase fraction. The proper calibration relationship is selected fr... | 12/08/1992 |
| 5166883 | Franking machine A franking machine is disclosed which has a microprocessor for carrying out accounting and control functions and in which printing of a franking impression is effected by ejecting droplets of ink from ink filled nozzles by means of selectively heatable el... | 11/24/1992 |
| 5164907 | Computer aided design system capable of placing functional blocks with a circuit constraint satisfied A system and method for logic circuit design in which functional blocks are placed on a substantially plane area in compliance with logic connection information under a circuit constraint. Critical nets are first extracted from logic connection informatio... | 11/17/1992 |
| 5161242 | Automated repeating sextant (ARS) The automated repeating sextant (ARS) is a navigational instrument suitable for air, sea and land use. The ARS uses an electronic artificial horizon, an A/D conversion board and either microchips or a computer, with software, to read a celestial body's al... | 11/03/1992 |
| 5161114 | Method of manufacturing a reticule In a method of manufacturing reticules of the present invention, device pattern data is generated by shrinking (or magnifying) the pregenerated device pattern by calculation with determined shrinking ratio and meanwhile it is combined with alignment mark ... | 11/03/1992 |
| 5161116 | System for evaluating the performance of a large scale programmable machine capable of having a plurality of terminals attached thereto A robot system for evaluating the performance of a host computer system which has a plurality of host communication ports connectable to a corresponding plurality of user terminals. Prior to placing the host computer system into service with the user term... | 11/03/1992 |
| 5161109 | Up/down loading of databases A communication system for processing information for distribution, including: a central data station, a plurality of user stations, a communication link interconnecting the user stations with the central data stations, each the user station including mea... | 11/03/1992 |
| 5161108 | Franking machine The franking machine has a control console (50) on which is provided a number of keys (21-24) corresponding to the decimal places of a maximum franking value amount. The most frequently occurring franking value amounts and also surcharge amounts for speci... | 11/03/1992 |
| 5157616 | Method for filling the valve quantity memory of a franking machine For filling the value preset memory (20) of a franking machine, a return code is released by the franking machine's read-only memory (21). This return case must be provided to an authorizing central room or station together with the value quantity to be f... | 10/20/1992 |
| 5155696 | Position detecting apparatus In a position detecting apparatus, digital signals in the presence of excitation signals are corrected by digital signals in the absence of excitation signals which are off-set values generated by each components of this postiion detecting apparatus. It t... | 10/13/1992 |
| 5155694 | Apparatus for measuring groove positions of a workpiece An apparatus for measuring groove positions of a workpiece includes a sensor for detecting grooves formed on the workpiece and a position sensor for detecting angular position of the workpiece with respect to a predetermined standard position, a measuring... | 10/13/1992 |
| 5153837 | Utility consumption monitoring and control system The present invention is a digital and analog system for generating an energy log for instant recall and display. The system is permanently programmed in read-only memory with the task of scanning sensor inputs, performing consumption calculations, updati... | 10/06/1992 |
| 5151868 | Signal line terminal allocation method A signal line terminal allocation method includes an electronic device which is hierarchically designed to obtain terminal allocations which satisfy electrical restrictive conditions. The electronic device includes high hierarchial components and low hier... | 09/29/1992 |
| 5150309 | Comprehensive logic circuit layout system Random logic circuitry (210) is laid out in a logic array (212) that has a plurality of row and column locations. The logic circuitry (210) implements a plurality of dynamic logic circuits, each logic circuit having a plurality of logic gate field effect ... | 09/22/1992 |
| 5146412 | Method and means for sensing a change in capacitance by a computer A method and means for using a computer for sensing a capacitive change in a sensor having a capacitive impedance component. The sensor is connected between the input and output ports of a computer which produces a periodic waveform at the output port and... | 09/08/1992 |
| 5144565 | Measurement of metallurgical properties in ferromagnetic test parts Apparatus for measuring metallurgical properties of a ferromagnetic test piece that includes a variable frequency oscillator for providing a periodic signal, and a test coil arrangement for applying the periodic signal to a test piece to generate eddy cur... | 09/01/1992 |
| 5136527 | Surface finish measuring device and method for gear teeth A surface finish measuring device for gear teeth. The device includes a probe for tracing an involute surface such of a gear tooth, a computer numerical control (CNC) machine for receiving perimeters relating to the geometry of the structure being measure... | 08/04/1992 |
| 5136514 | Tariff arrangement with secure bidirectional interface A tariff arrangement which is preferably intended for an electricity meter comprises a microprocessor, a data memory and a bidirectional interface for transfer of data with a read-out device. For the duration of a data transfer operation a timing member i... | 08/04/1992 |
| 5134574 | Performance control apparatus and method in a processing plant Processing plant control apparatus provides real-time indications of performance of plant operations with respect to curent state of process means. The real-time indications enable operations personnel to timely adjust process means to improve current per... | 07/28/1992 |
| 5134567 | Franking machine The franking machine has a control console (50) on which is provided a number of keys (21-24) corresponding to the decimal places of a maximum franking value amount. The most frequently occurring franking value amounts and also surcharge amounts for speci... | 07/28/1992 |
| 5133050 | Telescope operating system A method of operating a telescope is provided herein for a telescope having an eyepiece. The method uses a graphics display having a data base of celestial bodies, and means for generating and displaying a graphics display comprising graphics artefacts, e... | 07/21/1992 |
| 5128875 | Franking machine A franking machine includes an electronic microprocessor having pairs of ports for communication between the microprocessor and other electronic devices comprising memories, a keyboard display device or a real time clock device. One port of each pair is u... | 07/07/1992 |
| 5126944 | Data processing apparatus for producing in sequence pulses having variable width at output ports A CPU includes a program counter, an execution unit, and a program status word register. A pulse producing unit connected to the CPU includes a plurality of output terminals, a port selection register for designating at least one of the output terminals, ... | 06/30/1992 |
| 5124926 | Carrier management system having accounting registers A register system such as a carrier management system has a scale for weighing parcels, and a computer for determining shipping costs of the parcels. The computer has a memory including one or more accounting registers. A user PROM having a unique identif... | 06/23/1992 |
| 5121328 | Fee calculating apparatus for calculating delivery fee of parcel in accordance with its weight, length, and delivery area In a fee calculating apparatus for calculating a delivery fee, when weight data obtained by measurement in a weight measuring section such as an electronic scale, length data obtained by measurement in a length measuring section such as an automatic measu... | 06/09/1992 |
| 5121346 | Difference comparison between two asynchronous pointers and a programmable value In the preferred embodiment of the invention, a first-in, first-out (FIFO) memory includes flag generation circuitry which utilizes a write clock counter and a read clock counter to provide the number of write clock pulses received since the previous writ... | 06/09/1992 |
| 5121335 | Method and apparatus for verifying microcircuit fabrication procedure An apparatus is used to perform a fabrication procedure on a microcircuit under control of specification data. In a preferred embodiment of the invention, the procedure includes making relatively undetectable modifications to the microcircuit using a focu... | 06/09/1992 |
