"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
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| Number | Title | Issue Date |
| 7345437 | Rechargeable vacuum with reduced AC voltage A motor is disclosed that operates on either AC outlet power or DC battery power with decreased power drop when switching between AC and DC power. The AC power to the motor may be stepped down by using a clipper circuit, while the DC power supplied to the motor may ... | 03/18/2008 |
| 7339298 | Compliant motor driven variable electrical device A motor driven electrical device includes: a variable electrical device having a rotational variable control; a first support plate positioned above the variable electrical device; a motor support plate pliably attached to the first support plate using a pliable sep... | 03/04/2008 |
| 7282880 | Power tool and motor controller A method and apparatus to automatically reverse the motor of a power tool, such as a dispensing gun or similar tool. In some constructions, a controller automatically reverses the direction of plunger movement and removes the plunger from contact with the back wall ... | 10/16/2007 |
| 7276805 | Manual-powered generator and assemblies therewith The invention provides a manually-powered electrical assembly. In one aspect, the manually-powered electrical assembly can be a light assembly that comprises a light source, an electrical generator, and a manual actuator assembly. The electrical generator is electri... | 10/02/2007 |
| 7098412 | Pressure activated latching switch A structure embodying a switch and method of operating thereof for creating a latching switch is disclosed. The latching switch utilizes an electrorheologic fluid and the electronic latch function thereof is actuated by a pressure signal and deactivated by the remov... | 08/29/2006 |
| 7066692 | Dual chuck electrical hand drill A drill comprising: a power head having a first chuck positioned on a first end and a second chuck positioned on an opposite second end of the power head; a handle attached to the power head, the handle having a trigger switch for controlling a drive motor coupled t... | 06/27/2006 |
| 7034499 | Electromagnetic motor An electromagnetic motor with increased torque. The motor has a rotor coil configured to generate a magnetic field. At least two stator coils are connected in series with the rotor coil. Each of the stator coils is configured to generate a respective magnetic field.... | 04/25/2006 |
| 6967291 | Double-pass pushbutton Double-pass pushbutton, able to act successively on one or both independent microswitches (M1), (M2), where the body shell and the pushbutton have a leaktight and flexible cap mounted between them, which hermetically seals the joint without int... | 11/22/2005 |
| 6943306 | Interlock mechanisms The present invention provides an interlock mechanism suitable for use with a blower-vacuum device, which comprises: a user-operable switch (30) having a first condition for activating a motor of said blower-vacuum device and a second condition for deactivati... | 09/13/2005 |
| 6930431 | Electric machine and manual machine tool comprising the same The invention is based on an electrical machine with a rotatable brush plate (10, 12), which is held in its end positions by means of at least one holding mechanism (16, 18) that acts in the circumference direction (14). The invention pro... | 08/16/2005 |
| 6887049 | Electric fan motor assembly A fan assembly is disclosed. The fan assembly has a frame and a motorized blade assembly. The motorized blade assembly has an electric motor and an integrally attached bladed propeller with a central hub. The motor includes a rotor and a stator, the rotor having a r... | 05/03/2005 |
| 6882070 | Electric motor having a terminal board An electric motor including having a housing, a stator fixed relative to the housing, a shaft rotatable about a motor axis, a rotor supported by the shaft for rotation with the shaft relative to the stator, a terminal board fixed relative to the housing, and first a... | 04/19/2005 |
| 6768234 | Electric actuator and fixing structure of the actuator In an electric actuator having inner component parts thereof inclusive of a motor 1 covered with a cover main body 10, the cover main body 10 having a coating (protection) function serves as a manually operating part and is equipped with a mecha... | 07/27/2004 |
| 6610942 | Switch assembly for food waste disposer A switch assembly usable in a food waste disposer is disclosed having several improvements over the prior art. The switch assembly positively retains an overload switch, making assembly of the switch into the disposer easier. The switch assembly includes ... | 08/26/2003 |
| 6380648 | Wheel drum structure of inner stator portion with inbuilt switches The present invention proposes an electromotor or generator having an inner stator portion with stator coils and inbuilt switches. The inner stator portion lets an electromotor or generator have KE and KT of different levels in the r... | 04/30/2002 |
| 6376947 | Motor mounted switch An electrical appliance which operates at multiple speeds includes a motor construction having a stator and a rotor which rotates within the stator. The stator includes a plurality of magnetic flux inducing wires coiled on different poles of the stator. T... | 04/23/2002 |
| 6111331 | Air switch assembly for an electric motor An air switch assembly for an electric motor including a first snap action switch, a second snap action switch, and an actuator, is described. The first snap action switch is connected to the motor start winding and the second snap action switch is connec... | 08/29/2000 |
| 6111330 | Arrangement for sensing the temperature of the armature of a direct current motor An arrangement for the determination of the temperature of a direct-current motor. The temperature is determined in an indirect manner from the temperature-dependent armature resistance, with the armature resistance being determined as the quotient of the... | 08/29/2000 |
| 6093987 | Appliance having an a.c. series motor and having switching means for switching this motor to different speeds In an appliance having an a.c. series motor, which comprises a rotor coil configuration and two stator coils, switching means are provided for switching the a.c. series motor to different speeds or speed characteristics. Both coil ends of each of the two ... | 07/25/2000 |
| 6081056 | Motor and method for producing the same The invention relates to a motor which comprises a drive system which has a stator (10) and a rotor (14), and a control system which controls the drive system and has circuit boards (21), (22), both being housed in a casing (2), wherein the casing (2) has... | 06/27/2000 |
| 6057614 | Device for switching electromagnetic equipment A device (1) for switching electromagnetic equipment. It is especially intended for switching a direct-current brake for a three-phase motor (3) with a switching contact (6) with a rectifier (7) with integrated protective circuitry downstream of the switc... | 05/02/2000 |
| 6040646 | Plug for changing an operating condition of an electric motor Provided is a plug for changing an operating condition of an electric motor. The plug includes at least one electrical contact. A support structure includes at least one electrical contact. The plug is electrically connectable to the support structure in ... | 03/21/2000 |
| 6037724 | Electronic controlled surgical power tool A surgical power tool is disclosed including a power console and a handheld motor unit. The power console provides controlled power and to the handheld motor unit. Pressure sensitive switching elements on the handheld unit provide signals to the power con... | 03/14/2000 |
| 6005314 | Systems and apparatus for controlling energization of electric motor windings, and methods of assembling motors Systems and apparatus for integrating an air switch and a power cord into an electric motor, and methods for assembling an electric motor including an integral air switch and an integral power cord, are described. In one embodiment, an air switch and a po... | 12/21/1999 |
| 5932942 | DC motor drive with improved thermal characteristics An integral brushless DC motor and drive package is disclosed that includes the brushless DC motor and drive circuitry supported by one of the motor end caps. The drive circuitry includes power electronic devices for converting input power to pulsed power... | 08/03/1999 |
| 5814911 | Module and method for connecting timer to an electric motor A module and method are disclosed for adding an electrical device such as a timer to an existing electric motor such as that found in a whirlpool bath system for driving a water pump. The module includes an input connector configured for mating with a con... | 09/29/1998 |
| 5793131 | Systems and apparatus for controlling energization of electric motor windings, and methods of assembling motors Systems and apparatus for integrating an air switch and a power cord into an electric motor, and methods for assembling an electric motor including an integral air switch and an integral power cord, are described. In one embodiment, an air switch and a po... | 08/11/1998 |
| 5753984 | Apparatus and method for starting a single-phase variable reluctance motor A single-phase switched reluctance motor is disclosed. The motor includes a stator having a plurality of projecting poles and a rotor rotatably disposed adjacent to the stator. The stator and rotor poles may be formed from laminations of ferromagnetic mat... | 05/19/1998 |
| 5753993 | Adjusting apparatus for carbon brushes on an electric motor An apparatus for adjusting carbon brushes of a reversible electric motor includes: a swivelable support; a fixed position contact plate disposed adjacent the support; a plurality of fixed contacts received in the contact plate and adapted to be electrical... | 05/19/1998 |
| 5744883 | Contoured switch lever for centrifugal switch A switch lever for use with a centrifugal starting switch of an electric motor. The starting switch has at least one switch contact which is moveable, in response to axial movement of a centrifugal actuator, between a start position in which a starting wi... | 04/28/1998 |
| 5684348 | Automatic damping and transient supressing improvement in synchronous motors and generators A synchronous motor/generator is modified by mounting the conventional rotor on a sleeve that rotates freely on the main shaft rather than being fixedly mounted on the shaft. Limits to this rotation are incorporated in the design such that the maximum ang... | 11/04/1997 |
| 5677586 | Commutation of a universal motor operating in brake mode A universal motor (18) for a power tool (10) has a stator assembly (22) and an armature (24). The stator assembly includes a plurality of interconnected field windings (28-34) to which current is supplied to run the motor. The armature has a commutator (3... | 10/14/1997 |
| 5672922 | Commutator motor In a non-commutating-pole commutator motor, in particular as the drive of a power hand tool, a device for reversing the direction of rotation includes a switch (8) for reversing the direction of current in the rotor winding, and a brush apparatus (4) moun... | 09/30/1997 |
| 5636731 | Switch assembly and mounting bracket therefor A switch assembly (10) for installation on a dynamoelectric machine (M). An electrical overload switch (12) is interconnected with the dynamoelectric machine and electrical conduits (C) are routed thereto for resetting the dynamoelectric machine after it ... | 06/10/1997 |
| 5602436 | Motor starting switch with adjustable running clearance A dynamoelectric machine of the present invention includes a stator, a rotor journaled with respect to the stator, and a rotor shaft having a longitudinal axis extending axially from said rotor. An auxiliary winding and a starting switch operable to de-en... | 02/11/1997 |
| 5600107 | Electric switch with dynamic brake contact shared for making and breaking a power circuit A double pole single throw electric switch has normally closed contacts of one pole connected in a dynamic braking circuit with a motor load and normally open contacts connecting the motor to a source of power. A partial movable contact conductively conne... | 02/04/1997 |
| 5596236 | Motor capable of using high or low voltage A motor comprises an armature, first and second commutators disposed at either side of the armature, first and second amateur coils wound on the armature through commutator pieces in a double winding back alpha type, and first and second stator coil group... | 01/21/1997 |
| 5590019 | Device for change-over switching of individual electric motors or groups of electric motors A device for change-over switching of electric motors has a housing and two safety disconnecting switch systems positioned adjacently to one another in the housing. A cover is slidably connected to the housing so as to cover one of the safety disconnectin... | 12/31/1996 |
| 5581137 | Motor multiple switches and circuitry This apparatus incorporates an electric motor disconnecting safety switch within the motor's electrical terminal housing. This results in a single, compact device directly mounted to the electric motor body which is used for the safety disconnect as well ... | 12/03/1996 |
| 5572859 | Individual-motor drive for spinning-machine spindle A spinning- or twisting-machine has an elongated spindle bank, a row of rotatable spindles supported on the bank, respective individual drive motors on the bank for each spindle, respective electrical control circuits connected to the respective motors an... | 11/12/1996 |