Patent application number | Description | Published |
20130112523 | ELECTROMAGNETIC CLUTCH - An electromagnetic clutch includes a wrap spring being wound around to be in a pressure bonding state relative to an outer peripheral surface of a tubular portion of a driving-side rotation member. A first end of the wrap spring connects to a driving arm of a driving member, which connects to a driven-side rotation member. A second end of the wrap spring connects to a rim portion of an operating member formed in a disc form. The operating member is rotatable relative to the driven-side rotation member about the rotation axis as the center and movable along the rotation axis. After a rotation of the operating member is restrained, the driving member is restrained from rotation, which operates the wrap spring to twist and cancels the pressure boding state of the wrap spring relative to the driving-side rotation member, which in turn provides a power cutoff state. | 05-09-2013 |
20130341150 | ELECTROMAGNETIC CLUTCH - An electromagnetic clutch is configured to achieve a cutoff state by changing a winding diameter of a wrap spring. The electromagnetic clutch includes a driving element connected to a shaft and supporting one end of the wrap spring, an operating element fitted on the shaft and supporting the other end of the wrap spring, and an armature rotatable in unison with the shaft between the driving element and operating element and movable along a rotational axis. A main aperture is formed in the operating element while an auxiliary aperture is formed in the armature to achieve a positional relationship to electrify an electromagnetic solenoid to attract the operating element and then allow rotation of the driving element by dynamic inertia and attract the armature to the operating element with the wrap spring being remote from an inner surface of an input pulley. | 12-26-2013 |
20130341151 | ELECTROMAGNETIC CLUTCH - A compact-size electromagnetic clutch reaches a blocking state as an electromagnetic solenoid is switched from a non-driving state to a driving state and can save wasteful consumption of energy under this blocking state. This electromagnetic clutch includes a wrap spring in pressure-contact with an outer face of a cylindrical portion of a drive pulley provided on the center side thereof. One end of the wrap spring is coupled to a drive arm of a drive member operably connected to a shaft. The other end of the wrap spring is coupled to an operational member rotatable relative to the shaft and movable along the rotational axis thereof An electromagnetic solenoid attracts the operational member. An operational mechanism permits realization of the blocking state by preventing rotation of the drive member after a twisting operation of the wrap spring subsequent to the attraction of the operational member by this electromagnetic solenoid. | 12-26-2013 |
Patent application number | Description | Published |
20120292287 | METHOD OF FORMING MAIN POLE OF THERMALLY-ASSISTED MAGNETIC RECORDING HEAD - In a method of forming a main pole, an initial accommodation layer is etched by RIE using a first etching mask having a first opening, whereby a groove is formed in the initial accommodation layer. Next, a part of the initial accommodation layer including the groove is etched by RIE using a second etching mask having a second opening, so that the groove becomes an accommodation part. The main pole is then formed in the accommodation part. The first etching mask has first and second sidewalls that face the first opening and are opposed to each other at a first distance in a track width direction. The second etching mask has third and fourth sidewalls that face the second opening and are opposed to each other at a second distance greater than the first distance. | 11-22-2012 |
20120315716 | TAPER-ETCHING METHOD AND METHOD OF MANUFACTURING NEAR-FIELD LIGHT GENERATOR - A method of taper-etching a layer to be etched that is made of SiO | 12-13-2012 |
20130107681 | PLASMON GENERATOR INCLUDING TWO PORTIONS MADE OF DIFFERENT METALS | 05-02-2013 |
20130308227 | MAGNETIC HEAD FOR PERPENDICULAR MAGNETIC RECORDING HAVING A MAIN POLE AND A SHIELD - A magnetic head includes a magnetic structure incorporating a write shield. The magnetic structure is formed to include a first magnetic layer, a second magnetic layer stacked on the first magnetic layer, and a seed layer. The first magnetic layer has a front end face located in the medium facing surface and a top surface. The second magnetic layer has a front end face located in the medium facing surface and a bottom surface. The top surface of the first magnetic layer includes a first region including an end located in the medium facing surface and a second region farther from the medium facing surface than the first region. The seed layer is not present on the first region of the top surface of the first magnetic layer but is present on the second region. | 11-21-2013 |
20140298644 | METHOD OF MANUFACTURING PLASMON GENERATOR - A method of manufacturing a plasmon generator includes the steps of: an initial film made of a metal polycrystal and including a pre-plasmon-generator portion that later becomes the plasmon generator; heating the initial film with heating light so that a plurality of crystal grains constituting the metal polycrystal grow at least in the pre-plasmon-generator portion; stopping the heating of the initial film; and forming the plasmon generator by processing the initial film after the step of stopping the heating. The step of forming the plasmon generator includes the step of providing the pre-plasmon-generator portion with a front end face that generates near-field light. | 10-09-2014 |