Rotational motion generates velocity of a mass wherein the mass' release from the rotating system, becoming a projectile, and subsequent impact can result in cutting, abrasion, mixing of chemicals, coaling, and other surface and bulk volume effects including the transfer of momentum. Structures and devices are used to insert a mass into a rotating device. While inside the rotating device the mass gains velocity. Transitioning from the rotational system to a stationary surface is accomplished with a minimum of velocity loss by selecting trajectories, air flows, and surface finishes to reduce energy losses in the mass' transition onto the stationary surface and info a fixed stationary guide tube, and ultimately to an impact point. Single and multiple conduits, stationary and rotating, can be used to accomplish complex chemistry and physics affects.

Provided is a rotating electric machine, including: a rotary shaft rotatably supported by a front bearing and a rear bearing; a field core firmly fixed to the rotary shaft; and a pulley fitted over the rotary shaft on one end side so as to be rotatable integrally with the rotary shaft. In the rotating electric machine, the pulley, the front bearing, and the field core are arranged in a stated order from the one end side of the rotary shaft toward another end side of the rotary shaft. The pulley is fastened to the rotary shaft with use of a male thread formed on the one end side of the rotary shaft and a nut to be mounted to the male thread. The rotary shaft has a flange portion, which projects radially outward, and is arranged to a position between the front bearing and the field core in an axial direction of the rotary shaft.

Cable-actuated position sensors are described that employ multiple block and tackle arrangements to measure displacement of a draw wire or flexible cable. The disclosed sensors are relatively small and inexpensive. The disclosed sensors may also be used as part of a servo motor, or in conjunction with gear motors to provide positional information for operation of the gear motor.

A retrofitted flood irrigation valve apparatus includes a housing; a motor coupled to the housing, the motor to generate mechanical energy; a first wheel operatively coupled to the motor, wherein the first wheel is positioned within the housing and wherein the first wheel is to translate the mechanical energy generated by the motor to rotational motion; a second wheel positioned within the housing, wherein the second wheel is to be coupled to a stim of an existing flood irrigation valve; and a coupling between the first wheel and the second wheel, the coupling to transmit the rotational motion from the first wheel to the second wheel, wherein the rotational motion at the second wheel causes actuation of the existing flood irrigation valve.

An electrical generator assembly including a central rotatable shaft (12) having a winding assembly (26) mounted thereto for rotation therewith, a rotatable permanent magnet assembly (28) surrounding the winding assembly (26) adjacent thereto and in use cooperating therewith to induce a current in the winding assembly (26), and a drive system (38, 138, 238, 338, 438) drivingly interconnecting the central shaft (12) and the permanent magnet assembly (28), the drive system (38, 138, 238, 338, 438) defining a relative rotational speed between the permanent magnet assembly (28) and the winding assembly (26) which is greater than an absolute rotational speed of the winding assembly (26). A method of powering an electrical system (22) on a rotating rotor blade (18) supported by a rotating mast (12) is also discussed.

A drive motor for a laundry appliance includes a stator having a plurality of windings that extend around teeth of the stator. A rotor is in electromagnetic communication with the stator. The rotor is coupled to a drive shaft that extends through the stator. When the winding of the stator is electrically energized, the rotor rotates relative to the stator at a predetermined range of rotational frequencies that includes a baseline natural frequency of the rotor. A harmonic-modulating member is attached to the rotor that modulates the baseline natural frequency of the rotor to be a modulated natural frequency. The predetermined range of rotational frequencies is free of the modulated natural frequency of the rotor.

A power steering assembly includes a housing having a first hole on a first axis. The power steering assembly includes a cartridge in the first hole and having a second hole and a third hole that are both centered on a second axis that is parallel with and spaced from the first axis. The power steering assembly includes a pulley supported by the second hole and the third hole. The power steering assembly includes a motor releasably fixed to the cartridge and operatively coupled to the pulley.

A modular power unit (2; 200) for use with a power tool (1; 101; 102; 103) is provided. The modular power unit comprises a housing (3, 5, 7; 201); a motor (24); and a controller (23) arranged to control an operation of the motor (24), wherein the motor and the controller are at least partially enclosed by the housing. A power tool comprising the modular power unit is also provided.

A servo motor includes a housing, a rotor, a stator, a planetary reduction mechanism, a first Hall magnet, Hall switches, a second Hall magnet, and a position sensor; the rotor, stator, the planetary reduction mechanism, and the position senor are arranged in the housing. The rotor has a rotor support and a rotor shaft; the planetary reduction mechanism includes a sun gear, a planetary carrier, and planetary gears; a reduction ratio of the planetary reduction mechanism is N:1, where N is a positive integer; the first Hall magnet is arranged on the planetary carrier; the Hall switches correspond to the first Hall magnet and are arranged in the housing at even intervals around a rotation axis of the rotor shaft. The number of Hall switches is N; the second Hall magnet is arranged on the rotor; and the position sensor is opposite the second Hall magnet.

Systems are disclosed for power systems and enclosures having an improved compressor drive. In examples, a power system includes a generator to be driven by an engine. The generator is coupled to the engine on a first side of the generator and has a clutch extending from a second side of the generator opposite the engine. The clutch is coupled to the engine. A compressor is positioned at the second side of the generator opposite from the engine. The compressor comprising a shaft extending toward the generator and configured to be driven by the clutch.