摘要:
A torque intensifying tool for tightening and loosening threaded connectors has at least one torque intensifier means having a torque intensifier housing portion, having input means and having a first output means and a second output means, a drive operatively connected with the input means for transmitting a torque from the drive through the intensifying means to a threaded connector, so that in one mode of operation the torque intensifier housing portion together with the first and the second output means turn in the same direction and the same speed and torque as the input means, and in another mode of operation the torque intensifier housing portion together with one of the first and second output means receives a turning force in one direction while the other one of the first and second output means receives an equal turning force in the opposite direction at a lower speed but higher torque than the input means, and so that one of the first and second output means turns in the one mode and in the another mode while the other of the first and second output means turns in the one mode and reacts in the another mode.
摘要:
A torque intensifying tool for tightening and loosening threaded connectors has at least one torque intensifier unit with a torque intensifier housing portion, an input and a first output and a second output, a drive connected with the input unit for transmitting a torque from the drive through the intensifying unit to a threaded connector, so that in one mode of operation the housing portion together with the first and the second outputs turn in the same direction, and in another mode of operation the housing portion together with one of the first and second outputs receives a turning force in one direction while the other one of the first and second outputs receives an equal turning force in the opposite direction, and so that one of the first and second output means turns in the one mode and in the another mode while the other of the first and second output means turns in the one mode and reacts in the another mode.
摘要:
A pulse hub motor having coils (101) and magnets (107) interacting three dimensionally in x, y, and z axes to facilitate both increased power and efficiency through the ability to have more coils (101) in the motor, have each coil (101) perform both push and pull functions, and yet have the flexibility to only use the amount of coils (101) needed for real-time power requirements, whilst regenerating power in both normal drive and braking modes.
摘要:
A method, apparatus, and system are provided for implementing spin-torque oscillator sensing with an enhanced integrated demodulator for hard disk drives. The demodulator receives an input signal from a STO read sensor having an oscillation frequency ω related to the strength of the detected magnetic signal field. The demodulator includes a pair of mixers coupled to a quadrature reference oscillator with respective quadrature components cos(ω0t), and sin(ω0t) of the quadrature reference oscillator being mixed with a received input signal to form signals at the sum and difference frequencies, ω±ω0. Each of these mixer products is lowpass filtered by a respective a lowpass filter to remove the sum frequency components for providing a demodulator output signal that is directly proportional the STO oscillation frequency ω. The demodulator output signal is used for processing by data detection electronics.
摘要:
Read elements and associated methods of fabrication are disclosed. A read element as described herein includes a magnetoresistance (MR) sensor sandwiched between first and second shields. The read element uses the first shield as an active portion of the MR sensor. Instead of implementing an AFM pinning layer in the MR sensor, the first shield takes the place of the AFM pinning layer. The first shield is orthogonally coupled to the pinned layer through an orthogonal coupling layer, such as a thin layer of AFM material. Through this structure, the magnetic moment of the first shield pins the magnetic moment of the pinned layer transverse to the ABS of the read element, and an AFM pinning layer is not needed.
摘要:
Read sensors and associated methods of fabrication are disclosed. A read sensor as disclosed herein includes a first shield, a sensor stack including an antiparallel (AP) free layer, and insulating material disposed on the sensor stack. A aperture is formed through the insulating material above the sensor stack so that a subsequently deposited second shield is electrically coupled to the sensor stack through the aperture. The width of the aperture controls the current density that is injected into the top of the sensor stack. Also, hard bias structures may be formed to be electrically coupled to the sensor stack. The electrical coupling of the sensor stack and the hard bias structures allows current to laterally spread out as it passes through the sensor stack, and hence, provides a non-uniform current density.
摘要:
An extraordinary magnetoresistive sensor (EMR sensor) having reduced size and increased resolution is described. The sensor includes a plurality of electrically conductive leads contacting a magnetically active layer and also includes an electrically conductive shunt structure. The electrically conductive leads of the sensor and the shunt structure can be formed in a common photolithographic masking and etching process so that they are self aligned with one another. This avoids the need to align multiple photolithographic processing steps, thereby allowing greatly increased resolution and reduced lead spacing. The EMR sensor can be formed with a magnetically active layer that can be close to or at the air bearing surface (ABS) for improved magnetic spacing with an adjacent magnetic medium of a data recording system.
摘要:
Methods and means are provided for reducing the phenotypic expression of a nucleic acid of interest in eucaryotic cells, particularly in plant cells, by introducing chimeric genes encoding sense and antisense RNA molecules directed towards the target nucleic acid, which are capable of forming a double stranded RNA region by base-pairing between the regions with sense and antisense nucleotide sequence or by introducing the RNA molecules themselves. Preferably, the RNA molecules comprises simultaneously both sense and antisense nucleotide sequence.
摘要:
A current-perpendicular-to-the-plane spin-valve (CPP-SV) magnetoresistive sensor has an insulating layer with at least one aperture that confines the flow of sense current through the active region. The apertures are located closer to the sensing edge of the sensor than to the back edge of the sensor. The aperture (or apertures) are patterned by e-beam lithography, which enables the number, size and location of the apertures to be precisely controlled. The insulating layer may be located inside the electrically conductive nonmagnetic spacer layer, or outside of the magnetically active layers of the spin-valve. More than one insulating layer may be included in the stack to define conductive current paths where the apertures of the insulating layers overlap. The apertures are filled with electrically conductive material, typically the same material as that used for the spacer layer.