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| Number | Title | Issue Date |
| 7068361 | Apparatus, systems and methods for processing and treating a biological fluid with light Apparatus (10), systems and methods are disclosed for treating a biological fluid with light. A container (206) of biological fluid is introduced into a fluid treatment chamber (40) where it is contacted with light provided by one or more light ... | 06/27/2006 |
| 7032910 | Adaptable blood processing platforms An adaptable blood processing platform comprises a blood processing device and a ground engaging frame including a shelf to which the blood processing device is secured. The frame supports the shelf for movement between a lowered position and a raised position. The ... | 04/25/2006 |
| 4974112 | Apparatus for improved protection against lower magnitude faults in an electrical power distribution system Apparatus for improving the performance of conventional electromagnetic reclosing relays under continuous lower magnitude ground or phase faults in electrical power distribution systems. An incomplete sequence relay is connected to the reclosing relay to ... | 11/27/1990 |
| 4539684 | Automatic frame synchronization recovery utilizing a sequential decoder A digital communication system including an encoder and decoder for the transmission of digital information over a transmission medium, the system having automatic frame synchronization and error correction requiring a minimum of tansmission bits and deco... | 09/03/1985 |
| 4496882 | Inductorless pincushion correction circuit An internally generated raster scanning circuit includes self correction for pincushion distortion by multiplying the horizontal parabolic wave form by the vertical saw-tooth wave form. The multiplier is biased to provide the required 180° phase shift at... | 01/29/1985 |
| 4494184 | Process and device for servo-control This invention relates to a process for servo-controlling a magnitude TI depending on a parameter θ, whereby: the variations in time of a second magnitude TG which varies as a function of the parameter θ and to which the magnitude TI is related are moni... | 01/15/1985 |
| 4490804 | Self-correcting throttle position sensing circuit Any offset error in the throttle position sensor reading of a fuel injection circuit can be corrected by determining the actual reading at a time when the reading should correctly be zero, then adjusting subsequent readings by the error figure. The error ... | 12/25/1984 |
| 4490792 | Acceleration fuel enrichment system An acceleration fuel enrichment system is disclosed in which if the rate of increase of throttle position is determined as exceeding a predetermined minimum threshold (V1), asynchronous acceleration enrichment fuel control pulses are developed ... | 12/25/1984 |
| 4474061 | Sonic pressure volume measuring device The volume of gases in a container or the volume of liquid in the container is determined by creating cyclic pressure waves in the gases and detecting the waves by a second transducer. The signals produced by the second transducer are a function of the vo... | 10/02/1984 |
| 4466118 | Dual range audio level control A circuit providing a known change in a parameter of a function without interfering with the basic operation of the function is utilized in an audio circuit "loudness contour" control. Bass and treble controls function independently of the volume setting ... | 08/14/1984 |
| 4466001 | Polling system for multiple terminal units A semi-duplex communication system provides high channel efficiency by having the base station transmit a reference signal which each terminal uses as a sync signal. Each unit having data to send to the base responds with a very brief signal such as a bur... | 08/14/1984 |
| 4462114 | Signum signal generator A single carrier is amplitude-modulated by a signal which is a transform (as the sine function) of the audio signal, and one set of sidebands is removed. In a receiver, the signal can be recovered by first deriving the Hilbert transform of the sine transf... | 07/24/1984 |
| 4461026 | Radio with audio graphic equalizer A pushbutton tunable radio having an integral audio graphic equalizer is disclosed. During a tuning mode of operation for the radio actuation of any of five presettable pushbuttons results in the selection of a predetermined radio channel frequency within... | 07/17/1984 |
| 4459640 | Display mounting assembly A visual display mounting assembly is provided wherein a substantially rectangular parallelopiped central body 18 of a display module 17 is sandwiched between a planar surface 29 of a printed circuit board 23 and a substantially planar chassis wall 15 hav... | 07/10/1984 |
| 4453514 | Engine speed adaptive air bypass valve (dashpot) control During engine cranking and after cranking if engine coolant temperature has not yet exceeded a minimum value, an air bypass valve (dashpot) provides maximum additional air to the engine fuel mixture in addition to the air provided in accordance with engin... | 06/12/1984 |
| 4451824 | Color convergence data processing in a CRT color display station A preconverged color display station is disclosed which is compatible with a computer controlled control unit that provides electrical convergence control signals. Compatibility is obtained by causing the control unit to transmit the electrical convergenc... | 05/29/1984 |
| 4445072 | CRT Degaussing system A degaussing system in a CRT device detects a trigger pulse and provides a timed control pulse which controls a power circuit "on" time. The power supplied to the degaussing coil is gradually reduced by the increasing resistance of a PTC thermistor in ser... | 04/24/1984 |
| 4435844 | Remote control circuit A remote unit can be controlled by sensing the change of impedance in the power line of a control unit as the control unit is turned on. The power line circuit includes a portion of an oscillator which is damped by the turn-on. Functions such as power tur... | 03/06/1984 |
| 4434420 | Interline spacing adjustment circuit in a scanning CRT visual display system A scanning CRT visual display system is provided in which the operation of the CRT controller which provides video blanking pulses and horizontal and vertical sync pulses for controlling the CRT display is temporarily halted when a larger than normal vert... | 02/28/1984 |
| 4414851 | Gauge pressure sensor An atmospheric differential pressure sensor is disclosed comprising a pressure transducer, having a diaphram, mounted within a two piece protective transducer housing. An ambient atmospheric pressure receiving cavity is formed by the housing and coupled t... | 11/15/1983 |
| 4412187 | Phase adjustable horizontal oscillator for a data display monitor A horizontal oscillator for a CRT device runs at a rate higher than the line rate, and has a wide lock-in range. The horizontal sync signal is delayed in an adjustable monostable circuit and coupled to the oscillator for allowing a centering adjustment of... | 10/25/1983 |
| 4412157 | Protection circuit for a horizontal scanning circuit and CRT One circuit, providing a feedback signal from the horizontal output transistor to the horizontal drive circuit, prevents damage to the output transistor in the event of a disruption or noise in the input signal, and also prevents "spot burn" of the CRT sc... | 10/25/1983 |
| 4410762 | Dual mode tone detector circuit A low frequency tone detector filters out undesired frequencies in a received signal, than a latching circuit locks on when a given number of low frequency cycles are detected, having at least a predetermined peak amplitude. Thereafter, only a second give... | 10/18/1983 |
| 4409539 | Self-excitation for an alternator of the low-carbon steel rotor type A charging system for amplifying AC output voltages induced in at least one stator winding of an alternator by residual magnetism from a low carbon steel rotor to self-excite the charging system by means of the residual magnetism at low engine RPM. An ele... | 10/11/1983 |
| 4406922 | Stereo broadcast system The signal transmitted is a compatible amplitude modulated carrier with amplitude directly proportional to the monaural information or 1+L+R up to a frequency near the upper end of the normal program spectrum. Above the transition region, the amplitude be... | 09/27/1983 |
| 4405837 | Tone detector circuit A low frequency tone detector filters out higher frequencies, then a latching circuit locks on when a given number of low frequency cycles are detected which have at least a predetermined peak amplitude. Thereafter, only a second given number of missing o... | 09/20/1983 |
| 4405836 | Signal equalization selector A combination radio and tape player is disclosed which includes a signal equalization selector wherein the audio program selection switches which select either an AM or FM radio mode or a tape player mode of operation also simultaneously select various di... | 09/20/1983 |
| 4392382 | Linearized electronic capacitive pressure transducer A capacitive pressure transducer 10 with an analog output voltage which varies linearly as a function of sensed pressure is provided. A capacitive pressure sensor Cx provides a pressure variable capacitance that determines the frequency of a se... | 07/12/1983 |
| 4392254 | Mechanical tuner with microphonics elimination circuitry A mechanical radio receiver tuner with microphonics elimination circuitry is disclosed. During a mechanical tuning mode, the mechanical position of a movable tuning element provides an associated adjustable reactance which determines a control voltage for... | 07/05/1983 |
| 4388672 | Printed circuit board assembly A printed circuit board assembly usable in a transceiver microphone is disclosed. The assembly comprises a first printed circuit board having components mounted thereon which is fixed to one side of a circuit board carrier by retaining tangs. Second and t... | 06/14/1983 |
| 4387282 | Electrical switch assembly An electrical switch assembly (10) is provided having upper (11) and lower (12) housing portions which house a dome switch contact assembly (13). A switch actuator (20) substantially comprising a planar oblong plate (21) is mounted to a housing wall (41) ... | 06/07/1983 |
| 4386311 | Dual slope pulse width modulation regulator and control system A dual slope pulse width modulation regulator for separate control of two independently operative power supplies is provided. An oscillator supplies a triangle wave having a period T signal to each of two separate DC comparators each of which also receive... | 05/31/1983 |
| 4386310 | Constant frequency automotive alternator battery charging system A regulated automotive alternator battery charging system is disclosed. The system comprises an engine-powered alternator which provides a rectified alternator output signal for charging an automobile battery in accordance with an alternator field coil ex... | 05/31/1983 |
| 4385605 | Electronic ignition input logic Information is derived from two given sets of sensor output pulses relating to crankshaft position for use in determining the proper cylinder to be fired, the spark time and the dwell. The spark is enabled only after the crankshaft position is known, and ... | 05/31/1983 |
| 4385270 | Temperature limited voltage regulator circuit Field coil current of an alternator is controlled in response to temperature as well as to battery voltage, thus allowing maximum safe output power at any ambient temperature. A monostable circuit is utilized for reducing the maximum duty cycle of the fie... | 05/24/1983 |
| 4384899 | Bonding method adaptable for manufacturing capacitive pressure sensing elements A method of utilizing anodic bonding to bond a conductive semiconductor wafer to a metallized dielectric glass plate so as to form a capacitive pressure sensing element is disclosed. The method includes positioning the semiconductor wafer in contact with ... | 05/24/1983 |
| 4380980 | Ignition spark timing circuit The circuit determines which cylinder is to be fired and continually updates the determination so that the circuit recovers immediately from any false detect and responds to any change of engine condition. The dwell timing is derived from sensors adjacent... | 04/26/1983 |
| 4379990 | Fault detection and diagnostic system for automotive battery charging systems An in situ self-diagnostic automotive alternator battery charging system is disclosed. Included are: a battery; voltage regulator sensing battery voltage and generating an excitation signal; and an alternator driven by a vehicle engine provide a rectified... | 04/12/1983 |
| 4378004 | Engine control system with cylinder identification apparatus A four-cylinder engine control system (10) for controlling the functions of ignition or fuel injection is disclosed. The control system includes cylinder identification apparatus (30, 50, 60) which operates in conjunction with a rotary member (11) rotated... | 03/29/1983 |
| 4377728 | Phase locked loop with improved lock-in The circuit determines whether an incoming frequency is within the normal "lock-in" range of a phase locked loop VCO or not, and whether it is higher or lower than the VCO frequency. If not within normal range, the beats are rectified and gated to provide... | 03/22/1983 |
