Bizarre Patents
A sealed crustless sandwich for providing a convenient sandwich without an outer crust which can be stored for long periods of time without a central filling from leaking outwardly.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4596995 | Dot printer having means for correcting intensity variations A dot printer has an LED array printer head consisting an array of LEDs, drivers for independently driving the LEDs, and time control circuits for controlling ON or OFF times of the LEDs by energizing the drivers in accordance with image data and correcti... | 06/24/1986 |
| 4539571 | Thermal printing system Disclosed is a thermal printing system in which, an auxiliary heating means is driven to heat a main heating means for dot printing to a print feasible temperature, and at the time of dot printing, the main heating means is heated to the said print feasib... | 09/03/1985 |
| 4536774 | Thermal head drive circuit A thermal head drive circuit with the input connected to a source of printing data and the output connected to a thermal head including heater elements, so as to improve the printing quality of a thermal head recording apparatus for printing successive li... | 08/20/1985 |
| 4528576 | Recording apparatus A recording apparatus includes a plurality of recorders each of which is provided for a color to be recorded, these recorders being reciprocated relative to a recording medium such that they are selectively driven in a combination upon their forward movem... | 07/09/1985 |
| 4520304 | Three phase scaling current-to-voltage convertor An induction motor controller with a scaling convertor for both providing selective alteration of the overload sensitivity characteristic of the controller and converting the input current to a proportional control voltage. The feedback circuit includes a... | 05/28/1985 |
| 4516136 | Thermal print head A thermal print head 10 with a support surface 12 having first and second intersecting axes 14, and 16 is shown. A logic unit in the form of a shift register 50 and driver transistor 20 controlled by the shift register 50 are along the second axis 16. A h... | 05/07/1985 |
| 4492911 | Static phase converter Single-speed, three-phase motors and two-speed, three-phase motors are started and run by a static phase converter which comprises a timing circuit, adjustable for a starting interval, and a switching device which configures a plurality of capacitors, wit... | 01/08/1985 |
| 4486699 | Tapped auxiliary winding for multi-speed operation of electric motor and method therefor A capacitor motor and method is disclosed which utilizes one or more tap points within the auxiliary winding of the motor which can be selectively connected to a source of AC power via a selector switch for multi-speed operation of the motor.... | 12/04/1984 |
| 4481786 | Electronic control for a domestic appliance An automatic control for various domestic appliances has a ferrite core which surrounds the run winding for the drive motor of the appliance. The run winding represents the primary winding for the ferrite core, which has a secondary winding at which a bri... | 11/13/1984 |
| 4481456 | Microprocessor controlled multifrequency AC converter An AC converter changes the frequency of an incoming voltage waveform to operate an induction motor driving a ventilation system at one or several different speeds. A program followed by a microprocessor utilizes the phase-to-phase incoming voltage wavefo... | 11/06/1984 |
| 4479082 | Motor control system A motor control system in which an actual torque indication is derived from the motor and compared with a reference, or demand, torque. From the difference signal is derived a stator M.M.F. in magnitude and position relative to a reference frame locked to... | 10/23/1984 |
| 4477761 | Method of and system for minimizing current consumption of one or more A-C motors driving a variable load In order to minimize the current consumption of an alternating-current motor of the induction or the synchronous type (or possibly a plurality of such motors connected in parallel) driving a variable load, a sensor coupled to a supply line of the motor de... | 10/16/1984 |
| 4477763 | Method of controlling inverter and system therefor Method and system of controlling an inverter are disclosed. A reference rotary magnetic flux as a desired magnetic flux of an AC motor is so determined as to make a uniform rotary motion, an actual magnetic flux of the AC motor is detected, voltage vector... | 10/16/1984 |
| 4476418 | Well pump control system A well pump control system is disclosed for utilization with a conventional well pump having a stationary member and a reciprocating member. The reciprocating member operates a down-hole pump and is attached to a rocking beam. The rocking beam is driven b... | 10/09/1984 |
| 4472671 | Inverter startup circuit A control circuit for a DC inverter for an induction motor comprises: circuitry to produce a control waveform characterized by a sequence of pulse groups wherein the durations of the pulse groups increase with time, and wherein the widths of the pulses within ... | 09/18/1984 |
| 4471365 | Recording apparatus Herein disclosed is a battery-operated, dot type recording apparatus which comprises a drive mechanism unit having its number of revolutions regulated by the output of a quartz oscillator, a circuit for connecting a d.c. power source with a meter only whe... | 09/11/1984 |
| 4467258 | Power factor correction for variable speed drive A variable speed drive for an AC motor has features to improve the power factor. The system uses a rectifier for converting AC supply voltage into DC voltage on a positive rail and a negative rail. Frequency switches are controlled to alternately connect ... | 08/21/1984 |
| 4467249 | Remote automobile window control Apparatus is provided by which a motor vehicle window can be raised and lowered remotely by the use of a unique circuit which interfaces with the motor provided in the vehicle for such purposes. A hand-held transducer, utilizing either radio frequency ene... | 08/21/1984 |
| 4467260 | Motor control apparatus with rotor heating protection A microprocessor controlled motor starter is utilized in which the short term temperature differential between the rotor bars and the rotor end bells is accounted for by the microprocessor-based system as a function of operator programmed stall time and l... | 08/21/1984 |
| 4461987 | Current sensing circuit for motor controls A current sensing circuit includes an impedance network having a capacitor which produces a voltage proportional to the steady-state component of current and an inductance which produces a voltage proportional to the transient component. The capacitor vol... | 07/24/1984 |
| 4460852 | Method of controlling mill motors speeds in a cold tandem mill This invention concerns a method of controlling mill-motor speed in a cold tandem mill. During unsteady phases of rolling operation such as threading, rolling speed acceleration and/or deceleration, and tail out with respect to the coil being rolled, mill... | 07/17/1984 |
| 4460855 | Linear motor A linear motor comprises an armature and a stator each adapted to provide a sequence of North and South poles along the length of the motor. The pole pitch of the stator magnets is different from that of the armature coils such that with appropriate energ... | 07/17/1984 |
| 4460860 | Method and apparatus for increasing the maximum speed of rotation of a synchronous machine with a given excitation field strength and terminal voltage An apparatus and method for increasing the maximum speed of rotation of a synchronous machine having constant excitation field strength is disclosed. The synchronous machine is preceded by a converter, which has an adjusted current reference value as an i... | 07/17/1984 |
| 4459524 | Food processor A food processor is comprised of a food processing cutter which is driven by a motor connected to an AC power source, a switch for controlling on and off of the motor, a pulse generator for forming count pulses having a given period from the AC power sour... | 07/10/1984 |
| 4459528 | Phase detector for three-phase power factor controller A phase-detector (16, 18, 20) is provided for use in a power factor controller for a three-phase induction motor. The power factor controller includes switching thyristors (10, 12 14) for each motor phase winding and the phase detector for each phase incl... | 07/10/1984 |
| 4459518 | Window wiper A device for extending the operating time of a glass wiping system comprises a motor and reduction gear unit, a fixed-stop member for automatically stopping said motor at a fixed position and a complementary reduction gear driven from the output member of... | 07/10/1984 |
| 4458182 | Drive device with two mutually counteracting motors for eliminating gearing backlash With small drive torque the motors counteract one another, with full-load output they act in the same sense upon the load, so that the backlash or play between the drive, the gearing and the load is eliminated. As the motors there are used compound motors... | 07/03/1984 |
| 4458187 | Vending machine control and diagnostic apparatus Vending machine control and diagnostic apparatus for a vending apparatus having product delivery means comprising an electrically operated actuator for delivery of products, an impedance element and a circuit opening switch. The impedance element and the ... | 07/03/1984 |
| 4454456 | Method and circuit for operating a spray gun having a vibrating armature drive The invention deals with a method and a circuit for operating a spray gun having a vibrating armature drive which is energized with an electrical a.c. signal. To reduce the liquid which is sprayed per unit of time by the spray gun, a pulse width modulated... | 06/12/1984 |
| 4453117 | Motor control apparatus with short term undervoltage motor mode saver A microprocessor control motor starter is utilized in which a capacitor-backed random access memory is utilized to store certain critical data about the status of a motor so that if the power supply voltage temporarily drops below a certain value the crit... | 06/05/1984 |
| 4453116 | Scalar decoupled control for an induction machine using current control A scalar control supplemented by a decoupler transfer function control is provided to develop frequency and current commands for a current controlled inverter driving an induction machine. The machine torque is controlled by the slip and corresponding tor... | 06/05/1984 |
| 4453111 | Electric drive for submarines A direct current electric motor marine propulsion system is provided with a pair of shunt wound direct current electric motors which are alternatively connected in a series/parallel circuit configuration. A forward biased diode between the motors in the s... | 06/05/1984 |
| 4453115 | DC Motor control system In a motor control system of the present invention, a series circuit comprising a current sensing resistor, a DC motor and a power transistor, is connected between the output terminals of a DC power source; and a diode and a capacitor are connected to the... | 06/05/1984 |
| 4453118 | Starting control circuit for a multispeed A.C. motor This disclosure depicts a starting control circuit for a multispeed alternating current motor having at least two run windings and at least two start windings and a mechanical rotational output. The circuit comprises: an alternating current source; speed ... | 06/05/1984 |
| 4451768 | Windshield wiper control circuit A control circuit for a windshield wiper circuit provides for a depressed parking position by including a timing element which delays turn off of the motor for a time interval after the wiper reaches a position adjacent the parking position area.... | 05/29/1984 |
| 4451771 | Apparatus for controlling AC motor Disclosed is a control apparatus for an AC motor which is driven by a power converter constituted by switching elements. A current control circuit turns on/off the switching elements in accordance with a current pattern signal in the form of an AC signal ... | 05/29/1984 |
| 4450390 | Window lifter and door locking system A circuit arrangement for a reversible electric motor supplied from a voltage source, which motor drives a combined window-lifter and door-locking installation in motor vehicles. The motor is switched on by way of a first operating switch developed as a r... | 05/22/1984 |
| 4449080 | Electric vehicle protection scheme A fault detection and inhibit circuit for a power control unit in an electric traction motor propelled vehicle of the type wherein the power control unit includes a chopper circuit and a bypass contactor for shunting the chopper circuit when its percent c... | 05/15/1984 |
| 4449077 | Chopper control equipment for electric railcars When a plurality of shunt motors connected in parallel are used for driving an electric railcar, the differences in the characteristics of the motors introduced during the manufacturing thereof causes the armature currents to vary greatly even when they a... | 05/15/1984 |
| 4447767 | SCR Motor speed control Apparatus is disclosed for controlling the duty ratio of the application of an energization source such as a battery to a load in the form of a motor for driving a vehicle. More particularly, there is disclosed a motor control implemented by solid state d... | 05/08/1984 |
