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A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.
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| Number | Title | Issue Date |
| 7418302 | Floating deadband control A method of controlling an input device is disclosed. A deadband is generated about a first position when the input device is at the first position. The input device is moved from the first position to one or more additional positions. The deadband width is varied b... | 08/26/2008 |
| 7216497 | Slope predictive control and digital PID control The present invention provides an airflow control loop that uses averaged airflow measurements without the problems that are normally encountered with averaging measurements, such as the delay introduced into the airflow control loop. This is accomplished, in the pr... | 05/15/2007 |
| 7173467 | Modified high-efficiency phase shift modulation method Disclosed is a high-efficiency phase shift modulation method suitable for use in a traditional DC/AC single-phase full-bridge inverter. In this method, phase-shifted signal timing is used to modulate a duty cycle so that a power transistor is operated in a zero volt... | 02/06/2007 |
| 7161431 | Class B amplifier with process variation independent deadband A class B amplifier circuit produces a deadband that is independent of semiconductor process variations and creates a positive voltage when a differential input voltage is non-zero. A differential input amplifier couples differential currents representing the differ... | 01/09/2007 |
| 7142931 | Control system with controlled dead zone A method of operating a control device having a setpoint value, an error signal, and a control output is disclosed. The error signal is representative of a difference between a controlled variable and the setpoint value, the control output operable to affect the con... | 11/28/2006 |
| 7139621 | Floating deadband control A control system having a floating deadband control includes an input device moveable from a first position to a second position. In addition, the control system includes a controller configured to automatically generate a first electronically defined deadband about... | 11/21/2006 |
| 7039476 | Control system with filtered dead zone A method of operating a control device having a setpoint value, an error signal, and a control output is disclosed. The error signal is representative of a difference between a controlled variable and the setpoint value, the control output operable to affect the con... | 05/02/2006 |
| 7026780 | Method for stabilizing the movement of an articulated chain of a chain block, especially to prevent the formation of a resonance oscillation of the chain, and a chain block apparatus The invention concerns a method for stabilizing the motion of an articulated chain of a chain block, especially to prevent the formation of resonance oscillation of the chain, in which an articulated chain is led across a polygonal chain wheel with non-uniform pitch... | 04/11/2006 |
| 6906488 | POSITION CONTROL SYSTEM FOR USE IN DRIVING SYSTEM TRANSMITTING DRIVING FORCE OF DRIVING SOURCE TO DRIVEN MEMBER THROUGH POWER TRANSMISSION MECHANISM, IMAGE FORMING APPARATUS, POSITION CONTROL METHOD, PROGRAM FOR PERFORMING THE POSITION CONTROL METHOD, AND STORAGE MEDIUM HAVING THE PROGRAM STORED THEREON A position control system uses a speed command supplied to a driving source. The speed command has a change pattern which has an acceleration section (1) for eliminating a dead zone of a power transmission mechanism, a constant-speed section (or an acceleration sect... | 06/14/2005 |
| 6876168 | Disturbance attenuation in a precision servomechanism by a frequency-separated acceleration soft sensor In servomechanisms, like for example used in disk drives, disturbances, for example, friction, shock and vibration, prevent the system positioning accuracy from further improvement. These disturbances occur in a relatively low-frequency range compared to the electri... | 04/05/2005 |
| 6639375 | Control device and method for controlling a control element A control device and method is provided for controlling a control element by receiving a controller demand signal and a control element sensor signal, and processing the signals to determine if there is a change in the controller demand signal and/or a ch... | 10/28/2003 |
| 6265843 | Detection of saturation status for non-synchronous incremental actuators using a variable position estimate window A method for controlling non-synchronous actuators using a first and second estimate of the position of the actuator to create a variable position estimate window between which the actual position of the actuator is always bound. The first and second esti... | 07/24/2001 |
| 6184644 | Deflection-error-reduced position control apparatus for ball screw drive system In an apparatus for controlling the position of an object driven by a servomotor via a ball screw drive system, parameters of the ball screw drive system are determined from a position command value, an acceleration command value, a torque command value a... | 02/06/2001 |
| 5939851 | Position control device A position control device for driving a movable member by a motor to a target position prevents a re-start of the motor by the vibration after stopping of the movable member. A re-start operation is forcedly inhibited during a predetermined period after a... | 08/17/1999 |
| 5918195 | Calibration of a command device in control system A method of generating a calibrated command signal in a control system including a command device is disclosed herein. The command device (e.g., a control lever) is moveable between predefined positions (e.g., detents). A sensing circuit generates a signa... | 06/29/1999 |
| 5745647 | Method and apparatus for automatically controlling and scaling motor velocity A method and apparatus automatically associate a sensed mechanical parameter to a range of motor velocity for controlling the rotational velocity of a motor driving a medical instrument. The method and apparatus sense or measure the mechanical parameter w... | 04/28/1998 |
| 5543696 | Position control for hybrid servomechanisms A hybrid servomechanism includes a speed control, a rotor position control and a brushless motor. When enabled, the position control commands a stationary stator mmf vector, allowing the motor's rotor to rotate until load torque and motor torque are balan... | 08/06/1996 |
| 5122720 | Automated fader system A moving fader system, primarily for the processing and combining of audio signals, includes a dedicated preprocessor to implement the execution of repetious input instructions. Other features contributing to the operation of the system include (1) "Look-... | 06/16/1992 |
| 4926100 | Zero-torque eddy current motor system and method for controlling same A variable speed eddy current electric motor includes a zero-torque regulating circuit that senses and responds to the current flowing through an eddy current motor field coil. As the magnitude of the field coil's current is changed by the eddy current mo... | 05/15/1990 |
| 4914367 | Operating device for the cover of a sliding and lifting sunroof Operating device for the cover of a sliding and lifting sunroof of a motor vehicle having a desired value transmitter and an actual value transmitter for controlling the sliding sunroof function and the lifting roof function via an actuator that is part o... | 04/03/1990 |
| 4786849 | Offset compensating circuit in fine control servo device An offset compensating circuit in a fine control servo. When the servo loop for an error signal is opened, the error signal is sampled and its positive and negative peaks are found. The average of the positive and negative peaks is determined as an offset... | 11/22/1988 |
| 4770065 | Variable speed drive A mechanically adjustable variable speed drive includes an electric actuation apparatus which can be controlled by an analog embodiment or a digital circuitry embodiment. A speed change actuator is automatically and mechanically adjustable, such as with a... | 09/13/1988 |
| 4742465 | Control system for doser actuator having improved resolution The invention is a control system for generating time modulated pulse signals to effect movement of a doser type actuator. The control system is characterized in that it includes an augmenter circuit which generates a first correction signal additive to s... | 05/03/1988 |
| 4742284 | Advanced motor controller A controller for close positioning or modulating control of an electric motor is disclosed. The controller compares a signal representative of the demand on the system with a signal representative of the actual position of the motor or a valve associated ... | 05/03/1988 |
| 4687976 | Electromagnetic servo device for electric power steering systems for vehicles An electromagnetic servo device for electric power steering system for vehicles including a driving control circuit (100) adapted to generate a torque magnitude signal (Sa) and a torque direction signal (Sdr, Sdl), based on an output signal (VR, VL) from ... | 08/18/1987 |
| 4673854 | Electronic cross-level detection system An electronic levelling apparatus using an inclinometer mounted to a platform for sensing deviations from the horizontal and generating an output signal representative thereof, filtering the inclinometer output signal to remove electromagnetic and radio f... | 06/16/1987 |
| 4658908 | Electronic control system for a work implement A tractor control system has a work implement, an actuator for the work implement, an electronic circuit utilizing an analog/digital technique and including an analog/digital control unit and a device for measuring a factor dominating the performance of t... | 04/21/1987 |
| 4639651 | Electromagnetic servo device An electromagnetic servo device (200) includes a driving control circuit (100) adapted for, in accordance with an output signal (VR, VL) from a torque detection mechanism (11) for detecting steering torque (Ti) acting on an input shaft (1), providing a fi... | 01/27/1987 |
| 4629952 | Driving control method and circuit for electromagnetic servo devices A driving control method for an electromagnetic servo device including a driving control circuit adapted to generate a torque magnitude signal and a torque direction signal on the basis of an output signal from a torque detection mechanism for detecting t... | 12/16/1986 |
| 4595867 | Steering amplifier Described herein is a steering amplifier for use in the steering systems of watercraft. Potentiometers are mounted within the helm unit and the feedback unit of the craft and these potentiometers are used to determine the various helm and rudder positions... | 06/17/1986 |
| 4556835 | Operating mechanism for movable parts, especially for sliding roofs and sliding/lifting roofs An operating system for movable parts for the selective closing or exposing of openings, especially for sliding roofs and sliding/lifting roofs of motor vehicles. The operating mechanism has a motor drive for the movable part and an actuating member for s... | 12/03/1985 |
| 4549124 | Circuit arrangement for controlling the action of an adjusting device, in particular for a patient chair A circuit arrangement for controlling the action of an adjusting device, in particular of a patient chair, which comprises, as target value indicator, a digital-analog converter (1) and, as actual value indicator controllable by the adjusting device, a po... | 10/22/1985 |
| 4540926 | Circuit arrangement for an alternating control In a circuit arrangement for an alternating control a PI controller comprises a first operational amplifier having an output connected via a resistor to the non-inverting input of a second operational amplifier wired as an impedance transformer. The outpu... | 09/10/1985 |
| 4538098 | Method and apparatus for controlling electric discharge machine A method and apparatus for controlling an electric discharge machine wherein a motor for moving an energized electrode relative to a workpiece is driven in accordance with command data. The method includes the steps of storing in a memory retraction contr... | 08/27/1985 |
| 4529039 | Control system for controlling the displacement of a working portion of an implement The present invention relates to a control system. The control system controls the displacement of a working portion of an implement with respect to a reference position. The reference position can be the ground surface in the proximity of the working por... | 07/16/1985 |
| 4513782 | Electrohydraulic servovalve device A servovalve device assembly is provided with an electronic matching circuit positioned upstream of the servovalve. The matching circuit supplies electric control signals whose purpose is to modify the hydraulic flowrate response curve of the servovalve a... | 04/30/1985 |
| 4509110 | Method and apparatus for detecting failures in a control system A system for detecting the failure of a control system and its object includes a mathematical model of the control system and its object which continuously predicts the output of the object. An error signal is continuously calculated which is the differen... | 04/02/1985 |
| 4506203 | Small deadband servocontrol system A circuit for controlling the position of a driven member is disclosed which includes a control circuit for controlling the application of electrical power to a motor and a circuit element operable for generating position error signals corresponding to th... | 03/19/1985 |
| 4366743 | Control system for doser actuator A control system 54 for a doser type hydraulic actuator 56 is disclosed. The doser actuator includes a pair of unequal area pistons 18, 20 on a common shaft 16 which are moved incrementally by injecting into or removing from a control pressure chamber met... | 01/04/1983 |
| 4335341 | Automatic control method and apparatus An automatic control system in which a controlled quantity of an object to be controlled is compared with a preset quantity through a comparator, the output signal of which is applied to blind controller means having a dead zone set therein. When the outp... | 06/15/1982 |
