"Fooling around with alternating current is just a waste of time. Nobody will use it, ever."
Thomas Edison ; 1889
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| Number | Title | Issue Date |
| D631150 | Fan housing | 01/18/2011 |
| 7780422 | Assembly for transporting fluids An arrangement for pumping fluids has an electronically commutated external-rotor motor. The latter has a stator arranged on a stator carrier and a rotor joined to a first permanent magnet, which rotor is rotatably journaled, in a bearing tube, with respect to the s... | 08/24/2010 |
| D612429 | Label dispenser | 03/23/2010 |
| 7554279 | Method for operating an electronically commutated motor, and motor for carrying out a method such as this An electronically commutated motor (ECM 20) has terminals (56, 62) for connection to a DC power source (63). It has a permanent-magnet rotor (22), also a first and a second series circuit (40, 50) in each of which a stator winding ... | 06/30/2009 |
| 7548003 | External-rotor motor having a stationary bearing shaft An improved drum motor, preferably electronically commutated, features a unitary stationary central shaft (18) supporting a stationary inner stator (52), and an external rotor (49), including permanent magnets (54), secured to an inner su... | 06/16/2009 |
| 7500857 | Arrangement with a contact element A circuit board (20) is equipped with at least one conductor path (22) and a contact element (44). The latter is adapted to mechanically engage and electrically contact an electrical conductor (66). In the region of a conductor path (2... | 03/10/2009 |
| 7292028 | Apparatus for sensing the absolute-value angle of a shaft An apparatus serves to sense the absolute value of the rotational position of a shaft (14). The apparatus has a first single-turn rotary encoder (30) that is arranged at one end (20) of the shaft (14) and is arranged to sense the latter's... | 11/06/2007 |
| 7205689 | Electric motor with space-saving low-resistance neutral ring A compact electric motor has a rotor, and a stator (10) having a slotted lamination stack (16) defining slots separated by teeth, the teeth having tooth heads (153). Partial windings (17) are arranged on the teeth. On at least one axial e... | 04/17/2007 |
| 7189053 | Fan mounting means and method of making the same A fan arrangement comprises a fan (10) having a fan housing (30) within which is arranged a blower wheel (18) which, in operation, moves air from an intake side of the fan (10) to a delivery side. Arranged radially outside the fan housing... | 03/13/2007 |
| 7186075 | Mini fan to be fixed in a recess of a wall A mini-fan (126) is implemented for installation in a recess (124) of a wall (122), which wall is equipped on the periphery of the recess (124) with a plurality of retaining members (128, 129). The fan has, for air guidance, a hous... | 03/06/2007 |
| 7049718 | External-rotor motor having a stationary bearing shaft An improved drum motor, preferably electronically commutated, features a unitary stationary central shaft (18) supporting a stationary inner stator (52), and an external rotor (49), including permanent magnets (50), secured to an inner su... | 05/23/2006 |
| 6831431 | Method for regulating the rotational speed of a motor and a motor for carrying out a method of this type The invention concerns a method for regulating the rotation speed, of a motor with which a digital rotation speed controller is associated and which, during operation, furnishes an actual-value signal for the rotation speed in the form of a rotation speed frequency ... | 12/14/2004 |
| 6825632 | Direct current machine with a controllable arrangement for limiting current An electronically commutated direct current machine comprising a rotor and a stator has a stator winding arrangement that can be supplied, via a full bridge circuit (78), with current from a direct current source (73, 74). A commutation arrangement ( | 11/30/2004 |
| 6825625 | Device with an electromotor An arrangement having an electric motor (10) has a microcontroller (12) for influencing at least one motor function and a nonvolatile storage element (14) for storing at least one variable as a definition for that motor function. The arrangement... | 11/30/2004 |
| 6759820 | Arrangement for supplying a user, especially a D.C motor, that consumes power in a non-continuous manner from a D.C. system The invention concerns an arrangement for powering a load (12) that has non-continuous power consumption from a DC power supply (UB). The arrangement has a DC link circuit (14, 22) to which said load (12) can be connected and with which is assoc... | 07/06/2004 |
| 6680745 | Videoconferencing method with tracking of face and dynamic bandwidth allocation A videoconferencing method automatically detects, within an image generated by a camera, locations and relative sizes of faces. Based upon the detection, a control system tracks each face and keeps a camera pointed at and focused on each face, regardless ... | 01/20/2004 |
| 6663593 | Disposable syringe with plunger rupture A disposable syringe has a plunger rupture device and a washer-guide sealing barrel nozzle which make it safe against re-use, since the plunger breaks up and the piston is stuck at the bottom of the barrel, thereby making impossible reloading of the syrin... | 12/16/2003 |
| 6641560 | Injecting device An injection device has a housing (12) in which a container (14) for receiving an injectable fluid (18) is longitudinally movable. To its proximal end, an injection needle (26) can be releasably coupled. The injection device has a spring (50) associated w... | 11/04/2003 |
| 6580798 | Hearing aid The suppression of interfering noise in an input signal (7) takes place in a main signal path (5), which contains neither a transformation in the frequency range nor a splitting-up into partial band signals, but only a suppression filter (4). The transmis... | 06/17/2003 |
| 6545980 | Synchronous transmission system with fault location function and monitoring device therefor A synchronous transmission system is disclosed in which the transmission paths (leased lines) extend over several individual transmission systems (Sx). Monitoring devices (NIM) with access to at least one byte of the control data area are provided in sync... | 04/08/2003 |
| 6526067 | Method of transmitting data on an ISDN subscriber line, as well as line termination, exchange, network termination, and data terminal therefor The invention relates to a method of transmitting data on an ISDN subscriber line having a data channel (D16) and two or more voice- or data-carrying channels (B64), using the data channel. The method is characterized in that on receipt of each connection... | 02/25/2003 |
| 6496340 | Arrangement with an electric motor The rotation speed of an electric motor (9) is controlled by a controller (6) which receives its setpoint from a characteristic function (23). The characteristic function (23) calculates a setpoint for the controller (6) on the basis of an originally anal... | 12/17/2002 |
| 6496786 | Method and apparatus for measuring a frequency datum An improved method, for obtaining a datum concerning the rotation speed (n) of a rotating object, such as a motor rotor (32), offers high precision. Typically, the motor has a sensor (61) which supplies a sensor signal that has, for each revolution of the... | 12/17/2002 |
| 6463546 | Method and apparatus for monitoring a microprocessor A watchdog circuit for a microprocessor which has a reset input and a control output, which output, when operation is normal, periodically delivers, under program control, a signal (P0B2) of predefined duration (t1); and having a capacitor (32)... | 10/08/2002 |
| 6456024 | Electronically commutated DC motor An electronically commutated direct-current motor has a permanent-magnet rotor (19), a stator (2) that has at least one drive winding (25), and an H-bridge circuit (52) in which two bridge elements are configured as transistors (54, 56) and the other two ... | 09/24/2002 |
| 6452349 | Electronically commutated motor In an electronically commutated motor, both the driving current (i2) and the braking current (i2 ') are monitored. When excessive driving current occurs, a pulse duty factor which regulates the current is reduced. When excessive brak... | 09/17/2002 |
| 6429615 | Electronically commutated DC motor An electronically commutated motor (4) has a permanent-magnet rotor (28) and has a stator (14) that has two winding phases (25, 26). During one rotor rotation of 360° el., firstly current is delivered to the one winding phase (25) within a first rotation... | 08/06/2002 |
| 6396226 | Electronically commutated DC motor An electronically commutated motor (4) has a stator (14) with two winding phases (25, 26) which are alternatingly supplied with current during one rotor rotation through 360° cl. The motor also has a permanent-magnet rotor (28) which, when the motor (4) ... | 05/28/2002 |
| 6370255 | Loudness-controlled processing of acoustic signals With the method acoustic signals, e.g. in hearing aids, are processed in loudness-controlled manner in such a way that the loudness subjectively received by the hearing impaired person again always corresponds to the loudness received by listeners with no... | 04/09/2002 |
| 6357044 | Hybrid Fiber-Coax telecommunication system A Hybrid Fiber-Coax [HFC] telecommunication system including several modulation devices (MC1-MCn) and a combiner device (CSN) coupled thereto. The modulation devices provide modulated telecommunication signals under the form of output currents that are ap... | 03/12/2002 |
| 6307338 | Electronically commutated motor An electronically commutated motor has at least two winding phases (112, 114) which are wound together or otherwise inductively coupled. Current in each phase is controlled by a respective power transistor (124, 128). An integrated circuit controller (146... | 10/23/2001 |
| 6281616 | Claw pole motor An electronically commutated claw pole motor has an external rotor (42) with a shaft (40) and a rotor magnet (62). The claw pole motor contains a stator (64) which has a first soft ferromagnetic stator pole piece (74) located on its side facing away from ... | 08/28/2001 |
| 6255966 | Method of remotely programming a cellphone via a network The invention relates to a method of setting and performing freely programmable functions of a telecommunications terminal (U) with function control keys (KB) and a control unit (Ctrl) for initiating functions which are selected by actuating the function ... | 07/03/2001 |
| 6236660 | Method for transmitting data packets and network element for carrying out the method A method is disclosed for transmitting data packets in wide area networks (WAN) by way of a synchronous digital data transmission network (SDH), wherein the data packets are packed into synchronous transport modules (STM-N) and are transmitted by way of v... | 05/22/2001 |
| 6228067 | Injection device An injection device has a housing (112,116) wherein there is a longitudinally movable expressing member (186) for expressing an injection fluid from a fluid container (118). In order to displace the expressing member (186) longitudinally within the housin... | 05/08/2001 |
| 6215770 | Method of establishing a connection as well as an exchange, service computer and communications network A requesting terminal signals a call request (CALL) to a control unit of a first communications network. The control unit then determines whether sufficient capacity is available in the first communications network to establish the connection requested by... | 04/10/2001 |
| 6205121 | Method of establishing logical connections in a synchronous digital communications network, as well as network elements and management system A method of establishing logical connections in a synchronous communications network (SDH) comprising a plurality of at least partially interconnected network elements (NE1, NEn; CC1-CC3) and designed for the transmission of data packets containing a dest... | 03/20/2001 |
| 6203529 | Needle arrangement The invention concerns a needle arrangement for an injection device (16). It has a hollow needle carrier (10) on which a hollow needle (12) is mounted and which is configured for mounting on the injection device (16). The arrangement has a cap (32) which ... | 03/20/2001 |
| 6169378 | Electronically commutated motor with galvanically separate user interface circuit The arrangement has a motor (16) which has an electronic commutator and during operation is supplied from alternating current (AC) mains (L, N) via a rectifier (52) connected thereto, and a direct current (DC) link (22, 58) connected to said rectifier (52... | 01/02/2001 |
| 6167272 | Test transmitter, method and computer for testing a cellular mobile radio network It is known to introduce into a cellular mobile radio network (CN) a test transmitter (TS) which transmits a test signal for reception by mobile stations located in the coverage area of the mobile radio network. A simple, computer-aided method for testing... | 12/26/2000 |