Abstract: An oral hygiene device comprises a rotating body 22 mounted to a rotating shaft 21 of an electric motor 14, an output shaft 11 resiliently supported via a resonance pin 25 to be swingable finely, a drive magnetic body 23 provided on the rotating body 22, and a driven magnetic body 31 provided on the output shaft 11 to face the drive magnetic body 23 so as to be out of contact therewith. The drive magnetic body 23 and the driven magnetic body 31 are composed of permanent magnets, and as the rotating body 22 revolves, a varying magnetic field is generated between the both magnetic bodies 23, 31 to cause vibration of the output shaft 11 at high speed. In this manner, there are provided a vibration generating device, which can be manufactured at low cost and efficiently transmits vibration, and an oral hygiene device using the same.

Abstract: A drive unit for a hoist, an elevator in particular, with a motor (6), a transmission (2), a breaking means (4) and a housing (8) is characterized in that said motor (6) and said breaking means are together arranged in said housing (8). Furthermore, at least one part of said transmission (2) can be arranged in said housing (8) as mounted or built-in transmission so that said housing (8) for the largest part also forms the transmission housing.

Abstract: A D.C. motor-generator and an electric double layer capacitor are fixedly connected directly to each other and a rotary shaft of the motor-generator is rotated in one direction by an external force to generate D.C. electric energy which is stored in the electric double layer capacitor. By supplying the electric energy from the electric double layer capacitor to the D.C. motor-generator, the stored electric energy can be discharged as mechanical rotation energy. By deriving the stored energy as electric energy, an emergency power source can be provided.

Abstract: A pedal activated motor attachment for a hand operated food grinder for allowing a user to convert a hand operated machine into a pedal driven machine. The inventive device includes a motor positioned within a housing. The motor powers a series of gears including a drive gear having a socket for receiving the grinder shaft of a hand operated food grinder. The housing has an aperture for receiving an attachment key of the hand operated food grinder whereby the grinder shaft is coupled to the drive gear. A foot pedal is electrically connected to the motor such that the motor is actuatable by depression of the foot pedal.

Abstract: An electric motor drive unit for surgical tools, in which a drive consisting of a motor or motor gear unit is connected to, and electrically insulated from a clutch for the tool by a shaft, and in which the drive as well as current-carrying components are electrically insulated from a housing which accomodates said drive and current-carrying components. To achieve an electrical isolation of the current-carrying components from the tool and the gripping surface of the housing, the shaft, at least over part of its length, is made from an insulating material and runs through a seal which is supported in the housing and sealingly divides the housing into a first and second chamber, of which the first chamber accomodates the drive and the second chamber accomodates the clutch for the tool, said tool being inserted into a distal opening in the housing in the second chamber and connectable to the clutch.

Abstract: A single phase induction motor for driving a high pressure cleaning device. The induction motor has a stator (1) with a drive shaft (2) and a rotor (4) which is located on the shaft (2). High pressure pump (3) of the high pressure cleaning device is driven by the shaft (2). A muscle-powered starting aid (5, 18) is used to activate an on-off switch (11) of the single phase induction motor. Alternatively, the on-off switch (11) can be activated independently of the starting aid (5, 18) or via an electrical starting aid (B). In accordance with preferred embodiments, the muscle-powered starting aid can be a rope pull starter (5) or a kickstarter (18) and may act directly on the shaft (2) or via a transmission.

Abstract: A gyroscopic rotor has a shaft with opposite ends rotatably supported in a housing on a first or spin axis and capable of rotating around the housing at right angles to the spin axis, comprising a second axis. The support of the shaft in the housing is a circular track concentric with the second axis and positioned on opposite sides of and adjacent the ends of the shaft for rolling contact by end portions of the shaft when a torque is applied to the housing about a third axis at right angles to both the spin and second axis whereby to cause precession of the shaft and rotor about the second axis. The track comprises a circumferential groove with opposed surfaces of a type having a friction engagement with the end of the shaft to provide an improved rolling precessional movement of the shaft and rotor. A ring is supported in the circumferential groove and has notches receiving end portions of the shaft for establishing a drive connection between the shaft and the guide ring.

Abstract: A portable manually cranked electrical generator apparatus has a stirrup separated from the generator by a rigid support member. The support member may be adjusted vertically or angularly to accommodate differences in operator size and height while the stirrup is anchored by the operator's foot. A brace or clamp is fastened to an operator for steadying the apparatus for ease of use.

Abstract: A hub and dynamo arrangement includes a wheel hub rotatable about the axis of a fixed shaft; a dynamo having an annular stator carried by the hub, an annular armature disposed radially inwardly of the stator and a current collector fixed to the armature for leading off current generated by the dynamo, the armature being mounted for rotation about the axis of the shaft independently of the hub; a control device for selectively arresting and permitting rotation of the armature about the axis of the shaft, whereby electric current is generated when the armature is arrested, the control device including a contact member mounted for radial movement relative to the axis of the shaft and mounted in a position such that the radial movement effects current-transmitting and rotation-locking engagement with the current collector; and an electrically-conducting, actuating wire attached to the contact member, both for transmitting current from the contact member, and for applying mechanical actuating force to the contact

Abstract: Physiological loading device having a central pedal drive shaft 5 which drives via a freewheel a drum-shaped wheel 21 with inner gearing to which are advantageously coupled three follower gears. These drive, via gearing, an inner shaft 10 which is arranged around the drive shaft. The rotor of an electric rotational motor is arranged at the inner shaft, the rotor being surrounded by an armature 4 with poly-phase winding. The armature 4 is located between an inner and an outer housing part. The rotor windings are supplied with energizing current from sliding contacts, and the armature windings are connected to a braking unit.

Abstract: A hand-cranked power source intended for use in emergency situations to grate electrical energy. The power source features a lightweight construction as well as the ability to generate a reasonable amount of power. The preferred embodiment couples an input drive shaft to a harmonic drive system having a high speed output shaft. Upon the output shaft are preferably mounted samarium cobalt magnets forming the rotor of a three phase alternator. The output of the alternator may be utilized to power a field device, such as a radio, or the like, or may be used to charge fast-charging batteries.

Abstract: An electromagnetic power generator for installation in the interior of a vehicular tire, working on the principle of deriving energy from the fact that a portion of the tire becomes flattened once every revolution, causing a change in the length of the corresponding chord. A small closed magnetic circuit is alternately opened and closed by this movement, by means of a flexible strap coupled between the tire interior and the magnetic circuit. The circuit is reclosed by magnetic attraction.

Abstract: A hand crank generator-powered slide projector is provided in which the hand cranking both powers a projection lamp to illuminate a transparency and causes automatic film frame advance of the transparencies after a preset number of cranks to provide a stationery illuminated slide display. The generator comprises a stator coil capable of having a current induced therein and a magnetic rotor rotatable within the stator for producing a changing magnetic field across the stator coil due to such rotation for inducing the current therein. The stator coil is electrically connected to the illumination source for providing induced current thereto for enabling illumination of a positioned transparency. The crank is mechanically connected to the rotor for enabling rotation thereof and gear means are drivingly connected to the rotor for enabling simultaneous rotation therewith in response to rotation of the rotor by the crank.

Abstract: An energy absorbing unit for physical exercising devices is arranged as an asynchronous motor the stator of which has windings to be connected to an AC supply and cooperates with the rotor of ferromagnetic material having a circular circumference, and an input shaft and an epicyclic gearing arranged inside the rotor circumference operatively connecting the input shaft to the rotor with the input shaft adapted to be driven by the training person, in order to generate an electromagnetic motive force on the rotor to tend to drive it in the direction opposing movement of the shaft by the training person and thereby act as a braking force on the shaft independently of the movement thereof.