Bizarre Patents
An enclosure for small animals which is wearable on the front or back of an animate being.
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 |
| 4739231 | Image forming system There is provided a moving body control device comprising a motor for driving a moving body, detector for detecting the speed of the motor, memory for storing a program for the phase comparison control of the speed of the motor, and control means for cont... | 04/19/1988 |
| 4723100 | Brushless motor with a rotor pole position detector associated with each armature winding and electrically connected to another armature winding A brushless motor includes a plurality of stator armature windings having winding frames with spaces defined therein, respectively, a rotor mounted on a rotatable shaft and having field poles rotatable with respect to the armature windings, and a pluralit... | 02/02/1988 |
| 4717864 | Speed control method and apparatus for electronically commutated motors A speed control system for an electronically commutated motor having stator windings, a rotor mounted for rotation relative to said windings, switches for individually energizing said windings, and phase steering means operable to close said switches to s... | 01/05/1988 |
| 4716348 | DC motor adaptive controller A method for operating a DC motor controller according to a first gain when the armature current of the DC motor is discontinuous, according to a second gain when the armature current is continuous, and according to a third gain when the armature current ... | 12/29/1987 |
| 4713590 | Control circuit for DC brushless motor producing constant output torque A control circuit for controlling a multi-phase brushless DC motor to produce a constant level of torque employs one Hall generator for each pair of armature windings corresponding to a motor phase, with each Hall generator being arranged to produce outpu... | 12/15/1987 |
| 4713591 | Control and drive arrangement for movable members A controller for controlling the movement of a member such as a sliding door driven by a motor. The door is controlled by the use of a motion detector coupled with the door. Pulses from the motion detector are counted by control circuitry, and the door is... | 12/15/1987 |
| 4712053 | Servo control for motor having cutoff device for preventing motor from being locked A device for preventing a motor from being locked comprises a position indicator for indicating a position to be moved in response to rotation of the motor, a position detector for detecting the position being moved in response to rotation of the motor, a... | 12/08/1987 |
| 4710644 | Replaceable deep anode system A replaceable deep anode system for the cathodic protection of underground metallic structures is disclosed. The system includes an anode casing received in a drilled hole. The casing has an electrically non-conductive upper portion and a substantially in... | 12/01/1987 |
| 4710684 | Drive circuit for brushless DC motors A drive circuit for a brushless DC motor capable of generating a torque in the acceleration and deceleration directions, respectively, and effective when used in a portable device such as an electronic still picture camera. In the drive circuit, a power a... | 12/01/1987 |
| 4710686 | Method and apparatus for control of current in a motor winding A current driver circuit for an inductive load, such as a motor winding, provides unidirectional, controlled current through the winding by use of two pulse width modulator switches on opposite sides of the winding or bidirectional current control by use ... | 12/01/1987 |
| 4709196 | Power window device with safety detector and control override A power window device has an arrangement to automatically invert the movement direction of a windowpane when an upward movement of the windowpane is prevented in the automatic drive mode by some reason before it reaches its proper upper limit, and also ha... | 11/24/1987 |
| 4709194 | Method of controlling the mode of driving electric vehicles A method of controlling the mode of driving an electric vehicle so that the electric vehicle is accelerated at a maximum acceleration and is decelerated at a maximum deceleration. The mode of variation of the running speed of the electric vehicle is estim... | 11/24/1987 |
| 4705994 | Electric equipment driving circuit A microphone senses a sound generated by the user clapping his hands and converts the sound into an electric signal which is applied to a flip-flop circuit to set the latter. The output of the flip-flop circuit is supplied through a time constant circuit ... | 11/10/1987 |
| 4705995 | Control circuit for airless spray gun An airless spray gun includes a pump piston and a drive arrangement formed of a coil and a swinging armature for connection to an alternating current network. A suppression circuit is provided for periodically suppressing an arbitrarily selectable whole n... | 11/10/1987 |
| 4704567 | Brushless D.C. motor having alternating wider and narrower pole shoes A brushless D.C. motor wherein one of projected stator poles positioned to be mutually equally spaced in mechanical angle is made sufficiently smaller than the other as partly cut off at circumferentially expanding pole tooth part, the stator poles being ... | 11/03/1987 |
| 4704566 | Self-starting disk-type brushless motor with screw projection for generating cogging A disk-type brushless motor comprises a 2p-pole magnet rotor (p represents an integer of 2 or more) having alternating N and S poles and a single position sensor element. A stator armature having an armature coil is formed on two conductors which contribu... | 11/03/1987 |
| 4703237 | Rain sensor A rain sensor for selectively supplying power from a constantly available power source to a wiper means (14) to remove moisture from a vehicle window (12) when moisture has collected. A passive circuit (18) is supported on the window (12) and has an initi... | 10/27/1987 |
| 4703236 | Brushless d.c. motor A brushless d.c. motor comprises a commutation device by means of which the stator coils are connected to and disconnected from a direct-voltage source in a cyclic switching pattern for energizing said stator coils. In order to reduce torque variations as... | 10/27/1987 |
| 4703235 | Brushless DC motor A brushless DC motor employs a set of coils positioned around the motor axis to respond to an aximuthal pattern of changing eddy current sensitivity. Rf voltage is frequency-multiplexed on the motor power leads at a frequency that does not affect motor op... | 10/27/1987 |
| 4701683 | Inverter circuit for converting DC power to pulse wave power A pulse wave inverter circuit having two PNP transistors and two NPN transistors which are arranged such that the transistors are connected in the form of a bridge. The transistors are turned on and off so as to produce a pulse wave power. A first transis... | 10/20/1987 |
| 4701682 | Control system for maintaining traction of rolling stock From the peripheral velocity vM of a driving wheel and vehicle velocity v, the changing rate Ɗvs /Ɗt of the relative velocity vs therebetween with respect to time is obtained. The changing rate Ɗf/Ɗt of the traction fo... | 10/20/1987 |
| 4701681 | Starting device for a toy motor using an ultrasonic wave signal Disclosed is a starting device for a toy motor using an ultrasonic wave signal. The starting device comprises a transmitter external to the toy which generates an ultrasonic wave signal and a receiving and starting element disposed within the toy for rece... | 10/20/1987 |
| 4700116 | System for controlling brushless DC motor A brushless DC motor control system comprises a commercially available semiconductor commutator supplying field current to stator windings of the DC motor, a current detector connected to a negative-side terminal of the semiconductor commutator, a signal ... | 10/13/1987 |
| 4700115 | Method of starting an electronically commutated direct-current motor Process for starting an electronically switched d.c. motor with n coils cyclically activated by pulses which are derived from the rotation of the motor. First, each time motor is switched any selected coil of the motor is supplied with current by means of... | 10/13/1987 |
| 4698563 | Semiconductor electric motor having a rotary transformer to excite a rotor A m-phase semiconductor electric motor comprises an rotary transformer to excite a rotor; a shaft and a bearing for rotatably supporting the rotor; an exciting coil for exciting the rotor magnetic poles; the rotary transformer includes a first and a secon... | 10/06/1987 |
| 4698564 | Spinning optics device A monocular and binocular spinning optics device for use by doctors, researchers, etc., that creates a specific visual phenomenon in front of one or both eyes of the person wearing the device wherein the lenses are constructed by cutting out and affixing ... | 10/06/1987 |
| 4698567 | Ribbon deck motor control Apparatus for adapting a common dc motor for use in a typewriter to drive the ribbon lift and advance functions. The motor is coupled by means of a set of gears to a shaft on which are mounted the ribbon advance gear and ribbon lift cams. Also mounted on ... | 10/06/1987 |
| 4698568 | Antiexplosion structure in a working robot An antiexplosion structure in an electric motor drive type working robot includes a sealing structure for sealingly enclosing electric motors for driving the robot and wirings for the motors. Dry air is continuously fed into the sealing structure at a pre... | 10/06/1987 |
| 4698565 | Hoist with overload safety protection The hoist, lifting apparatus or the like of our invention comprises at least one hoist motor, a protective controller for the hoist motor, and an overload safety device operating on the protective controller, wherein the overload safety device has a cable... | 10/06/1987 |
| 4698561 | Use of SCR's in extended retarding An improved drive system for large mining trucks employing combined diesel/electric propulsion or the like wherein AC current generated by the alternator is rectified before powering wheel motors and wherein the wheel motors are used as generators to prod... | 10/06/1987 |
| 4698560 | Adjusting device, especially for locking and unlocking motor vehicle doors In vehicular electric door lock arrangement the running time of a first adjusting unit is longer than the worst possible running times of the other adjusting units. The first adjusting unit operates a switching unit via which the running time of the other... | 10/06/1987 |
| 4697125 | Method and apparatus for determining shaft position and for providing commutation signals The invention provides a method and apparatus for determining the angular displacement of a rotating shaft, and for commutation of a brushless motor. At least two analog sensors, mounted near the shaft, generate phase-displaced analog signals responsive t... | 09/29/1987 |
| 4697124 | Integral series parallel and power brake controller for a transit vehicle An integral series parallel changeover and power dynamic brake controller apparatus for a transit vehicle disclosed. The controller utilizes a single cam shaft to operate switches for the series parallel function and the power brake function. The apparatu... | 09/29/1987 |
| 4695739 | Multi-function switch-controlled lamp circuit A multi-function circuit controller provides auxiliary control functions for an existing single-pole, single-throw toggle switch by counting the number of changes of state of the switch that occur within predesignated delay periods from one state change t... | 09/22/1987 |
| 4695781 | Digital time interval measuring apparatus A time interval measuring apparatus includes a single main counter, and a plurality of latch circuits each for latching the count content of the main counter every time a plurality of different pulses are supplied thereto. In this apparatus, one of the co... | 09/22/1987 |
| 4695776 | Power converter for an electrically-compensated constant speed drive An electrically-compensated constant speed drive according to the present invention includes a speed summer having first and second input shafts and an output shaft at which constant speed motive power is developed wherein the first input shaft is coupled... | 09/22/1987 |
| 4694227 | Current sharing circuit A controller for a wheelchair motor or the like including two power transistors each having a base and a collector-emitter path, the collector-emitter paths being connected in parallel. At least one oscillator and a flip-flop are provided to supply pulses... | 09/15/1987 |
| 4692671 | Electrically-compensated constant speed drive An electrically-compensated constant speed drive according to the present invention includes a speed summer having first and second input shafts and an output shaft at which constant speed motive power is developed wherein the first input shaft is coupled... | 09/08/1987 |
| 4692675 | Control and energization circuit for a brushless d-c motor A ring-connected d-c brushless stator winding has winding sections (I, II . . . XI), serially connected by junctions (1, 2 . . . 11) and selectively and sequentially connected to a source of d-c power (15, 16) by controlled switches (20, 21), the connecti... | 09/08/1987 |
| 4692677 | Windshield wiper system A windshield wiper system for motor vehicles includes an electric motor which drives at least one wiper during normal wiper operation, too and fro between two reversing positions within a wiping area. When the wiper system has been switched off by means o... | 09/08/1987 |
