U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Bizarre Patents

Patent No. 5979328

Vehicular Impact Signaling Device

An apparatus for the deployment of a visible plume to alert other motorists that a proximate motor vehicle has been involved in a collision.

Newsletter  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.

 

Class 318/45 - Mechanically coupled in fixed ratio of movement


Subclass of Class 318 - Electricity: motive power systems
Definition: Subject matter in which means are provided for coupling,
No. of patents: 42
Last issue date: 05/24/2011


1    
NumberTitleIssue Date
7948192Dual redundant variable field permanent magnet dynamoelectric machine
A dual redundant permanent magnet type dynamoelectric machine includes a dual flux throttle system to selectively disable one of a first motor and a second motor. ...
05/24/2011
7417386Electronic line shaft
A method and assembly for synchronizing machine operations, the assembly comprising a reference generator for generating a speed reference signal and a position reference signal, a plurality of slave units, each slave unit including, a mechanical device, a separate ...
08/26/2008
7359783Method of detecting obstructions caused by motor-driven power windows and similar devices using fuzzy logic algorithms
The mobile element is a vehicle window pane, panel, movable seat or similar, conveniently guided, and driven by a DC electric motor with a permanent magnet, and the method comprises a step of detecting an entrapment or collision situation of the mobile element by me...
04/15/2008
7298104System for electrically regulating the movement transmission device for a motor vehicle
The invention concerns a system for electrically regulating a power transmission device between the heat engine and a pair of electrical machines and the drive wheels of a motor vehicle, the heat engine being connected to the two electrical machines via a mechanical...
11/20/2007
7205730Article transport vehicle
The invention provides an article transport vehicle that includes: a vehicle body; a first wheel that supports the vehicle body; a second wheel that is disposed spaced apart from the first wheel in a fore-and-aft direction, and that supports the vehicle body; a firs...
04/17/2007
7202616Synchronous control method and device of the same
A synchronous control device which is provided with drive motors and a central control unit generating a synchronous reference signal and with which the drive motor is controlled to rotate synchronously with the synchronous reference signal supplied from the central...
04/10/2007
7187142Motor drive with velocity noise filter
A drive unit for controlling a motor includes a position feedback device and a velocity noise filter. The position feedback device is operable to generate a position signal relating to a position of the motor. The velocity noise filter is coupled to the position fee...
03/06/2007
7164242Variable speed drive for multiple loads
A variable speed drive is provided having a converter to convert an AC voltage to a DC voltage, a DC link to filter and store energy from the converter, and a plurality of inverters, wherein each inverter is configured to convert a DC voltage to an AC voltage to pow...
01/16/2007
7088061Drive system for a group of machines
A drive system powering a group of machines each fitted with a rectifying unit, wherein the inputs of the control devices of the machines' drive motors are interconnected by an electrical bus which implements a power exchange. The system enables swapping current fro...
08/08/2006
7006888Semiconductor wafer preheating
Embodiments of the present invention provide a method, article of manufacture, and apparatus for processing semiconductor wafers. The method includes preheating a semiconductor wafer in two types of chambers. In one embodiment, a first preheating chamber is a load l...
02/28/2006
6977014Architecture for high throughput semiconductor processing applications
A semiconductor wafer processing system in accordance with an embodiment of the present invention includes a loading station, a load lock, a process module, an intermediate process module, and a transport module which further includes a load chamber, a transfer cham...
12/20/2005
6943523Brushless motor control system
For self-switching control of a brushless motor (10) powered by means of a predetermined electrical cycle in order to cause the rotor to advance, the control system comprises an indicator device (100) for indicating the mechanical position of the rotor...
09/13/2005
6837202Engine starter for remote-controlled model airplane
An engine starter includes two motors housed inside a housing, a driven gear wheel meshed between the pinions at the motor shafts of the motors, a first idle gear meshed with an internal gear at the driven gear wheel, a second idle gear coupled to the first idle gea...
01/04/2005
6832119Methods and systems for torque ripple compensation
A method for compensating for torque ripple in pulse width modulated machines including providing damping for transient disturbances utilizing a fixed feedback controller and rejecting steady disturbances utilizing an adaptive controller. ...
12/14/2004
6819017Method and apparatus for fan redundancy
A device is presented having a multiplicity of motors connected to a shaft. A multiplicity of motor control devices are connected to the motors. A multiplicity of bearings are connected to the motors and the shaft. The multiplicity of motors, the multiplicity of mot...
11/16/2004
6734645Electric powered vehicle
In an electrically driven automobile, a dynamo-electric generating device(s) is attached to one or more free-running wheels of the vehicle, which are not connected to the power drive of the vehicle. The free-running wheels are rotated by contact with the road surfac...
05/11/2004
5838121Dual blade robot
A multi-blade wafer handling device is provided to concurrently move two or more wafers through a vacuum processing system. The wafer handling device includes two motors magnetically coupled into a transfer chamber to move an arm assembly connected to a d...
11/17/1998
5804933Method for operating an adjusting apparatus and means for adjusting a positional device
A method and apparatus for operating a positioning device for an adjustable device. The positioning device is mechanically actuated by a bearing connected to a pivotable armature that interacts magnetically with an electromagnet. The electromagnet is ener...
09/08/1998
5789878Dual plane robot
The present invention provides a robot assembly for transferring objects, namely substrates, through a process system. A robot linkage is provided to a multi-plane, multi-arm robot assembly driven by two motors. In one embodiment, a linkage is provided wh...
08/04/1998
5708332Dual motor drive system
A dual motor drive system particularly adapted for the drive of long printing presses provides uncoupled control of both the voltage and current provided to the motors. A current divider proportions the current provided to a main and secondary motor in ac...
01/13/1998
5491390Electric propulsion system for a bicycle
An electric propulsion system for a bicycle includes one or two electric motors secured to a mounting assembly attached to the bicycle, a drive roller that impinges on the front wheel of the bike, a battery pack secured to the frame of the bicycle, and a ...
02/13/1996
5420486Multiple motors controllers
This invention is for incrementally controlling energizing and de-energizing of at least two electrical motors in which motor armatures are mechanically coupled to a single mechanical member and in which motor stators are mechanically referenced to a seco...
05/30/1995
5420485Uncoordinated machine initialization system and method
A system and method for initializing a plurality of mechanical elements of a machine includes a plurality of housings and an uncoordinated motion controller. The housings are coupled to the mechanical elements and include at least a motor controller elect...
05/30/1995
5166582Drive arrangement of an open-end spinning machine
Drive arrangement for spinning stations of an OE spinning machine. The feed rollers of the spinning stations can be driven by an electric motor and the draw-off rollers by another electric motor. At least one of these two motors is a synchronous motor. Ea...
11/24/1992
4939431Control system for synchronous rotation of cutter heads, for use in shield machine
In a control system for synchronous rotation of the cutter heads in a multi-cutter shield machine, the rotation cutter heads are so disposed in generally the same plane such that the distance between the centers of the adjoining cutter heads is larger tha...
07/03/1990
4798999Numerically controlled electromechanical precision drive system
A numerically-controlled electromechanical precision drive system in which a plurality of low-current servomotor units are arranged in a circle around the driven shaft or push rod of an intermediate gear-wheel in such a way that pinion gears linked with i...
01/17/1989
4788476Machine for lapping two curved-tooth bevel gears
A lapping machine for correcting the asymmetrical hardening distortions which occur during the hardening of gear wheels, especially bevel gears, is disclosed. This machine is particularly advantageous in connection with large bevel gear transmissions or d...
11/29/1988
4689527Double driving device for machines
This invention provides a double driving device which includes two motors, sharing a same common shaft or having their shafts linked together, and a control circuit. The two motors have different horse power and are used in machines, such as presses or sh...
08/25/1987
4683407Authority limiter
An authority limiter includes an input shaft clutched to an output shaft. The output shaft is geared to a motor. Opto-sensors provide control signals to a current source supplying power to the motor. Different amounts of opposing torque are applied by the...
07/28/1987
4585977Electronic motor
An electronic motor includes a shaft mounted for rotation about a rotational axis. A plurality of radial lever arms are mounted with respect to the shaft. Each lever arm has an inner end connected to the shaft by a one-way clutch. The clutches allow the s...
04/29/1986
4525655Two stage electric drive
An electric motor drive system having a first direct current electric motor, a first drive shaft to which the first electric motor is coupled, a second direct current electric motor having a higher power rating than the first, a second drive shaft to whic...
06/25/1985
4350936Cascaded fin winding machine control and method
Apparatus and a method for controlling the operation of a fin winding machine. Various motor drives are utilized to regulate the speed of rotation of a heat exchange tube upon which fin is wrapped to regulate the speed of rotation of forming wheels for be...
09/21/1982
4346334DC Servomotor system
An automatic motion or position control DC servomotor system in which a load-driving axis driven by a DC motor to be controlled in one rotary mechanism is rotated synchronously with, or following the rotation of, a reference axis manually operated or driv...
08/24/1982
4323828Apparatus for use with a motor drive
An apparatus is provided for use with a motor drive for cancelling the electromagnetic reaction energies developed by a pair of drive motors upon rapid starting or sudden stopping, the latter occurring upon the application of dynamic braking to said motor...
04/06/1982
4300078Method of constructing models of rotary electrical machines to provide simultaneous similitude of electromagnetic, thermal and mechanical working conditions of the rotor
The method makes possible experimentation on reduced scale models, more especially in non-stationary operating conditions, of the rotor of rotary electrical machines respecting the physical conditions which ensure in the rotor under test a simultaneous si...
11/10/1981
4222512Device for controlling rotary motion
A rotary drive device for effecting, for example, displacement of a printing roller towards or away from a pressure roller in a printing press, is formed by a direct current or alternating current high speed motor coupled mechanically to a permanent magne...
09/16/1980
4152994Frame positioning device for automatic stitching apparatus
For an automatic stitching apparatus of a type comprising at least one sewing machine having a stitching needle operable to perform a stitching operation to form an embroidery pattern on a fabric supported on an embroidery frame, a frame positioning devic...
05/08/1979
4122377Variable speed, alternating current motor unit and methods and apparatus for speed control of same
A variable speed, alternating current motor unit which operates continuously in a stepless manner and delivers full torque over a speed range from zero to maximum speed. The unit includes two induction motors which are mounted side-by-side in a housing. E...
10/24/1978
4093896Speed control for rotatable element driven by direct current motors
Disclosed herein is a control comprising a rotatably supported wheel, a first direct current motor, means drivingly connecting the first direct current motor to the wheel with a first drive ratio, a second direct current motor, means drivingly connecting ...
06/06/1978
4032824Variable-speed 3-phase drive
A variable-speed three-phase drive is disclosed. The drive includes a switchable, undersynchronous converter cascade for driving two mechanically coupled asynchronous motors which have slip ring rotors and which can be connected separately to a three-phas...
06/28/1977
1    
 
Sign InRegister
Username  
Password   
forgot password?