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| Number | Title | Issue Date |
| 4769001 | Method and apparatus for calibrating plural pump fluid flow system A blood constituent processing system uses a disposable plastic fluid flow path into which an anticoagulant must be accurately metered with respect to pumped blood flow. In a preliminary calibration phase, a closed fluid flow path is provided between the ... | 09/06/1988 |
| 4746863 | Contiguous slices in multi-slice MRI In a multi-slice magnetic resonance imaging system which employs a train of plural RF NMR nutation pulses, the frequency spectrum and/or magnetic gradient employed for succesive pulses is controlled so as to effect more nearly equal full-width-half-magnit... | 05/24/1988 |
| 4350972 | Multiple console control system A control system providing control from multiple control consoles of a circuit board fabricated device. Indicators at each control console provide users with status information so that users will not command conflicting functions of the device. The contro... | 09/21/1982 |
| 4335468 | Simultaneous transmission signal detection system In a communication system wherein multiple radio stations communicate with one another over a single channel, an arrangement for indicating to a first user who is transmitting over the channel that there is a simultaneous transmission occurring on the cha... | 06/15/1982 |
| 4329593 | Wind energy machine utilizing cup impellers Cup-type impellers are utilized on wind energy machines which are driven according to a first embodiment to rotate about a vertical axis and according to a second embodiment to rotate about a horizontal axis. In the vertical axis embodiment, the shaft dri... | 05/11/1982 |
| 4329570 | Lead calculator A calculating device and a method of use thereof for determining the lead required to shoot a projectile at a moving target including cooperating logarithmic scales with indicia corresponding to the parameters target speed, range, projectile speed and lea... | 05/11/1982 |
| 4327397 | Computer power/temperature protector A computer power/temperature protector is provided. A control and disconnect circuit is responsive to a power interruption to disconnect power from a computer to which the protector unit is connected in-line, and thereafter responsive to a reset signal to... | 04/27/1982 |
| 4327356 | Arrangement for monitoring the performance of a digital transmission system A monitor for monitoring the performance of a digital transmission system has three level sensors for sensing at decision instants the level of a signal derived from a transmitted signal. A first of the level sensors has its threshold set at a level corre... | 04/27/1982 |
| 4324182 | Apparatus and method for selectively activating plural electrical loads at predetermined relative times Separate electrical timing and load activation devices are provided for each of plural electrical loads and each device is connected to receive reference timing signals from a central unit. Each of the separate timing and load activation devices measures ... | 04/13/1982 |
| 4322754 | Systems for processing printed data A data processing unit including means for reducing original data or producing the data in coded form and for recording the same on photographic or magnetic media e.g. photographic film or disc or magnetic tape, scanning means for sensing the data recorde... | 03/30/1982 |
| 4319090 | Method of determining existing service capabilities of telephone exchange equipment The availability of service in a telephone exchange is evaluated by a technique which includes monitoring for each call type over a period of time the level of usage of the items of equipment required for that call type and evaluating using the monitored ... | 03/09/1982 |
| 4318043 | Method and apparatus for rapid NMR imaging of nuclear densities within an object Densities of resonant nuclei within elemental volumes along a line are measured using the nuclear magnetic resonance phenomenon called "spin echo". A first planar volume of nuclei is selectively excited to nutate spins by approximately 90°. Thereafter a ... | 03/02/1982 |
| 4315229 | Bandstop filters A filter network that exhibits a bandstop response comprises a network of basically low pass or high pass structure. The network is developed by choosing a bandstop transfer function, a fourth-orderelliptic is disclosed, which is converted to a low pass f... | 02/09/1982 |
| 4311902 | Lead calculator for moving targets A calculating device and a method of use thereof for determining the lead required to shoot a projectile at a moving target such as game including cooperating logarithmic scales with parameter indicia corresponding to the range of the target, the speed an... | 01/19/1982 |
| 4309756 | Method of automatically evaluating source language logic condition sets and of compiling machine executable instructions directly therefrom A method for use under program control in a digital computer for automatically evaluating compiler level language logic condition sets and for compiling machine executable instructions directly therefrom is disclosed. More specifically, a unique method of... | 01/05/1982 |
| 4309006 | Tethered airfoil wind energy conversion system A generally toric lighter-than-air gas bag-type airfoil is tethered to the ground at a plurality of angularly widely distributed points about the periphery of the gas bag. A wind turbine is mounted at the entrance to the axially central vent. The tether l... | 01/05/1982 |
| 4308998 | Milling, mixing or dispersing apparatus Milling apparatus wherein material to be milled is agitated with a charge of particulate material also includes one or more predispersing chambers through which the material to be milled enters the apparatus. The chamber includes pumping means which carry... | 01/05/1982 |
| 4306303 | Switching of digital signals A digital switching device of the stored program type operating under the control of a central control unit has a multiplexing stage for multiplexing signals from a plurality of ports, an input time switching stage which receives multiplexed signals from ... | 12/15/1981 |
| 4304184 | Selectively actuable electrical circuit A control circuit for firing an electrically actuable igniter in response to a firing signal having predetermined characteristics. For protection from inadvertent or accidental actuation, the control circuit includes at least one inductor in series with t... | 12/08/1981 |
| 4302757 | Bore telemetry channel of increased capacity Apparatus and method for signaling within a drill hole without disturbing an ongoing drilling operation. High data rates are achieved by using phase and/or amplitude modulation techniques which enable information transfer rates well in excess of the data ... | 11/24/1981 |
| 4297947 | Electric igniter An ignition system for the firing of a plurality of electrically actuable igniters (16) and methods for construction and use of the assembly. The ignition leading wire (17) of each electrically actuable igniter (16) is formed from a continuous length of i... | 11/03/1981 |
| 4297637 | Method and apparatus for mapping lines of nuclear density within an object using nuclear magnetic resonance Densities of resonant nuclei within elemental volumes along a line are measured using the nuclear magnetic resonance phenomenon called "spin echo." A first planar volume of nuclei is selectively excited to nutate spins by approximately 90°. Thereafter a ... | 10/27/1981 |
| 4287425 | Construction of a CT scanner using heavy ions or protons A computed tomography X-ray scanner, in which a monochromatic X-ray beam is generated by irradiating an X-ray producing target with high energy monoenergetic ions. The ion beam is preferably produced by a cyclotron. The X-ray beam is preferably rotated th... | 09/01/1981 |
| 4285703 | Apparatus for cleaning gas An air washer comprises upper and lower plenum chambers which are separated by a panel which carries tubes. A spray nozzle above each tube is oriented to direct the conical spray it forms into the tube to wet the lower half of the bore of the tube. An inl... | 08/25/1981 |
| 4285235 | Method and apparatus for non-destructive inspection of tires A pulsed through-transmission ultrasonic non-destructive inspection of the internal structure in a tire wall is effected. The ultrasonic inspection is preferably carried out through the walls of a rotating inflated tire with the ultrasonic transducers bei... | 08/25/1981 |
| 4278931 | Location of contact faults on electrically conductive cables The invention relates to the location of contact faults on electrically conductive cables such as telephone pairs. Contact fault location apparatus has a pair of resistors, a constant current source, and means such as a differential amplifier and meter fo... | 07/14/1981 |
| 4276597 | Method and apparatus for information storage and retrieval Method and apparatus for identifying particular desired information bearing records having desired predetermined identifiable characteristics from a set of such records in a base data file. A special retrieval file including arrays of binary coded element... | 06/30/1981 |
| 4275589 | Method and apparatus for non-destructive inspection of tires A pulsed through-transmission ultrasonic non-destructive inspection of the internal structure in a tire wall is effected. The transmitted acoustic signals preferably have a frequency of least 40 Khz, are transduced to electrical form, amplified with a rel... | 06/30/1981 |
| 4273215 | Safety harness for hunters A safety harness particularly adapted for use by hunters who hunt from trees. The harness includes a waist web, a chest web, a shoulder web all slideably engaging a rear gang connector, a lifeline attached to the rear gang connector and adjustable quick r... | 06/16/1981 |
| 4273051 | Electric device An electrically ignited load such as a fusehead is connected to the secondary winding of a transformer. The secondary winding is magnetically linked to a primary winding through a magnetic circuit and the transformer is constructed so as to provide a subs... | 06/16/1981 |
| 4271706 | Ultrasonic scanner An ultrasonic pulse is directed into a body and electrical representations of pulse reflections from body interfaces along its path are generated. The ultrasonic signal path is scanned through a volume of the body and position signals indicative of the in... | 06/09/1981 |
| 4266428 | Method and apparatus for non-destructive inspection of tires A pulsed through-transmission ultrasonic non-destructive inspection of the internal structure in a tire wall is effected. The transmitted acoustic signals preferably have a frequency of least 40 Khz, are transduced to electrical form, amplified with a rel... | 05/12/1981 |
| 4263983 | Single stile ladder A portable, multisectional ladder for scaling poles, trees and like objects and a method of use thereof. Individual ladder sections are formed of steps welded to individual angle metal sections. The angle metal sections are removably joined using male/fem... | 04/28/1981 |
| 4257334 | Apparatus and method for regulating the distribution of granulate Apparatus and method for the independently regulated distribution of granulate to a plurality of points of consumption. A container (1), at least partially filled with granulate (10) to be distributed, includes a plurality of container apertures (4) each ... | 03/24/1981 |
| 4255659 | Semiconductor radiation detector An electrical charge amplifier including a filter circuit is AC coupled to a semiconductor (CdTe) detector and generates a voltage pulse in response to an electrical charge generated in the detector by an incident pulse of radiation. The filter allows onl... | 03/10/1981 |
