Patents by Inventor Mitsunobu Hanyu

Mitsunobu Hanyu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8611051
    Abstract: According to one embodiment, a bearing surface of the head slider includes a leading step at the inflow end portion, a skirt portion at the inflow end portion, a leading pad on the leading step and including a junction extending to the skirt portion, first groove surfaces individually on the opposite sides of the junction and being continuous with a downstream central portion of the skirt portion, second groove surfaces on an upstream side of the first groove surfaces and formed deeper than the first groove surfaces, and negative-pressure grooves individually on the transversely opposite sides of the first groove surfaces between the second groove surfaces and the skirt portion and formed deeper than the second groove surfaces.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: December 17, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Mitsunobu Hanyu
  • Patent number: 8320082
    Abstract: According to one embodiment, a head includes a slider and a head section on the slider. A supporting surface of the slider includes a leading step in an inflow side of airflow, a leading pad on the leading step, a negative-pressure cavity in a downstream side of the leading pad, a trailing step in an outflow end side of the airflow, a center rail extending from the leading step to the trailing step, a guide groove in the center rail, configured to guide the airflow to the trailing step, and an intake groove formed in the leading pad, extending in a direction transverse to the airflow, communicating with the guide groove, and includes two end parts in its longitudinal direction, the two end parts extending in a direction of the airflow and forming openings open to the inflow side of the leading pad.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: November 27, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Mitsunobu Hanyu
  • Patent number: 8264794
    Abstract: According to one embodiment, a facing surface of a slider of a head includes a leading step on an inflow side of the slider, a leading pad on the leading step, a pair of side steps extending in a first direction from the leading step toward an outflow end of the slider and opposed to each other across a space in a second direction, side pads provided on the side steps to be continuous with the side pads, individually, a trailing step located on an outflow side of the airflow and provided with a head section, and induction grooves continuously extending from the leading pad to the side pads, individually, and configured to guide introduced airflow.
    Type: Grant
    Filed: October 25, 2010
    Date of Patent: September 11, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Mitsunobu Hanyu
  • Patent number: 8194350
    Abstract: According to an embodiment, a head includes a slider and a head portion on the slider. A facing surface of the slider includes a negative-pressure cavity defined by a recess in the facing surface, a leading step portion on an upstream side of the negative-pressure cavity, a pair of side portions extending in a first direction from the leading step portion, a trailing step portion on an outflow side of the negative-pressure cavity, a pair of skirt portions extending in the first direction from the side portions toward the outflow end of the slider, and an enclosure step portion continuously arranged along an outflow end edge and opposite side edges of the facing surface from the trailing step portion to opposite sides of the skirt portions and outsides of the side portions and formed deeper than the skirt portions and shallower than the negative-pressure cavity.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: June 5, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Mitsunobu Hanyu
  • Patent number: 8179638
    Abstract: According to one embodiment, a slider of a magnetic head is provided with a negative-pressure cavity formed in a facing surface, a leading step portion situated on the upstream side of the negative-pressure cavity, a pair of side portions opposed to each other, a trailing step portion situated on the outlet end side of the negative-pressure cavity, and a pair of embossed portions formed on the facing surface so as to project from the negative-pressure cavity and provided on the outlet side of the negative-pressure cavity with respect to an airflow. The embossed portions individually extend along a second direction so as to be situated individually on the opposite sides of the trailing step portion and are formed so as to be lower than the trailing step portion with respect to the negative-pressure cavity and flush with an outlet-side end surface of the slider.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: May 15, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Mitsunobu Hanyu
  • Patent number: 8111482
    Abstract: According to one embodiment, a slider of a head includes a trailing step portion which protrudes from a facing surface of the slider, is situated on the downstream side of a negative-pressure cavity with respect to an airflow, and has a top surface, a trailing pad which protrudes from the top surface, and an adjustment recess which is formed in the top surface on the upstream side of the trailing pad with respect to the airflow and is shallower than the negative-pressure cavity. The adjustment recess defines a first step portion, which extends across a first direction and hangs from the top surface toward a bottom of the adjustment recess, and a second step portion, which extends across the first direction, is spaced in the first direction from the first step portion, and rises from the bottom of the adjustment recess toward the top surface.
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: February 7, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Mitsunobu Hanyu
  • Publication number: 20120002327
    Abstract: According to one embodiment, a head includes a slider and a head section on the slider. A supporting surface of the slider includes a leading step in an inflow side of airflow, a leading pad on the leading step, a negative-pressure cavity in a downstream side of the leading pad, a trailing step in an outflow end side of the airflow, a center rail extending from the leading step to the trailing step, a guide groove in the center rail, configured to guide the airflow to the trailing step, and an intake groove formed in the leading pad, extending in a direction transverse to the airflow, communicating with the guide groove, and includes two end parts in its longitudinal direction, the two end parts extending in a direction of the airflow and forming openings open to the inflow side of the leading pad.
    Type: Application
    Filed: June 30, 2011
    Publication date: January 5, 2012
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Mitsunobu Hanyu
  • Patent number: 7978435
    Abstract: According to one embodiment, a head of a disk device has a slider and a head portion disposed on the slider. The slider has a facing surface opposed to a surface of a rotatable recording medium and is flown by an airflow. The facing surface of the slider has a first direction extending in a direction of the airflow and a second direction perpendicular to the first direction. The slider includes a negative-pressure cavity, a leading step portion, a leading pad which protrudes from the leading step portion, a recess which is formed in that part of the leading step portion which is situated on an upstream side of the leading pad with respect to the airflow and defines a first step portion and a second step portion which individually extend in a direction across the first direction and are spaced in the first direction, and a trailing step portion.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: July 12, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Mitsunobu Hanyu
  • Publication number: 20110157748
    Abstract: According to one embodiment, a facing surface of a slider of a head includes a leading step on an inflow side of the slider, a leading pad on the leading step, a pair of side steps extending in a first direction from the leading step toward an outflow end of the slider and opposed to each other across a space in a second direction, side pads provided on the side steps to be continuous with the side pads, individually, a trailing step located on an outflow side of the airflow and provided with a head section, and induction grooves continuously extending from the leading pad to the side pads, individually, and configured to guide introduced airflow.
    Type: Application
    Filed: October 25, 2010
    Publication date: June 30, 2011
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Mitsunobu HANYU
  • Patent number: 7961432
    Abstract: According to an embodiment, a slider of a head is provided with a negative-pressure cavity 54 formed in a disk-facing surface, a leading step portion located on the upstream side of the negative-pressure cavity, a pair of side portions opposed to each other, a head mounting pad provided on the facing surface on an outflow side of the negative-pressure cavity with respect to an airflow and provided with a head portion, a positive-pressure generating pad which is arranged on the facing surface between a leading pad and the head mounting pad and configured to produce a positive pressure, and a pair of center skirts which are disposed on the outflow side of the positive-pressure generating pad and are shallower than the negative-pressure cavity.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: June 14, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Mitsunobu Hanyu
  • Publication number: 20110090597
    Abstract: According to one embodiment, a slider of a magnetic head is provided with a negative-pressure cavity formed in a facing surface, a leading step portion situated on the upstream side of the negative-pressure cavity, a pair of side portions opposed to each other, a trailing step portion situated on the outlet end side of the negative-pressure cavity, and a pair of embossed portions formed on the facing surface so as to project from the negative-pressure cavity and provided on the outlet side of the negative-pressure cavity with respect to an airflow. The embossed portions individually extend along a second direction so as to be situated individually on the opposite sides of the trailing step portion and are formed so as to be lower than the trailing step portion with respect to the negative-pressure cavity and flush with an outlet-side end surface of the slider.
    Type: Application
    Filed: December 21, 2010
    Publication date: April 21, 2011
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Mitsunobu HANYU
  • Publication number: 20100321834
    Abstract: According to an embodiment, a head includes a slider and a head portion on the slider. A facing surface of the slider includes a negative-pressure cavity defined by a recess in the facing surface, a leading step portion on an upstream side of the negative-pressure cavity, a pair of side portions extending in a first direction from the leading step portion, a trailing step portion on an outflow side of the negative-pressure cavity, a pair of skirt portions extending in the first direction from the side portions toward the outflow end of the slider, and an enclosure step portion continuously arranged along an outflow end edge and opposite side edges of the facing surface from the trailing step portion to opposite sides of the skirt portions and outsides of the side portions and formed deeper than the skirt portions and shallower than the negative-pressure cavity.
    Type: Application
    Filed: April 14, 2010
    Publication date: December 23, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: MITSUNOBU HANYU
  • Publication number: 20100149691
    Abstract: According to an embodiment, a slider of a head is provided with a negative-pressure cavity 54 formed in a disk-facing surface, a leading step portion located on the upstream side of the negative-pressure cavity, a pair of side portions opposed to each other, a head mounting pad provided on the facing surface on an outflow side of the negative-pressure cavity with respect to an airflow and provided with a head portion, a positive-pressure generating pad which is arranged on the facing surface between a leading pad and the head mounting pad and configured to produce a positive pressure, and a pair of center skirts which are disposed on the outflow side of the positive-pressure generating pad and are shallower than the negative-pressure cavity.
    Type: Application
    Filed: September 28, 2009
    Publication date: June 17, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Mitsunobu HANYU
  • Patent number: 7719794
    Abstract: According to an embodiment, a slider of a head comprises a negative-pressure cavity formed in a facing surface, a leading step portion situated on an inflow side of the negative-pressure cavity, a pair of side portions opposed to each other, a trailing step portion situated on an outflow side of the negative-pressure cavity, a leading pad provided on an end portion of the leading step portion on the negative-pressure cavity side, and a plurality of recesses formed on the inflow side of the leading pad and individually opening in the inflow-side end face. The leading step portion includes a main step portion which is situated beside the inflow side of the leading pad and extends in a second direction, and at least one extended step portion extending transversely to the second direction from the main step portion toward the inflow side and situated between the recesses.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: May 18, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mitsunobu Hanyu, Kan Takahashi
  • Publication number: 20090310259
    Abstract: According to one embodiment, a slider of a head comprises a negative-pressure cavity formed in a facing surface, a leading step portion situated on the upstream side of the negative-pressure cavity, a pair of side portions opposed to each other, a trailing step portion situated on the outflow side of the negative-pressure cavity, a pair of skirt portions extending in the first direction from the side portions toward the outflow end of the slider and being deeper than the side portions, and intermediate step portions extending continuously along the skirt portions outside the skirt portions with respect to the second direction and formed to be deeper than the skirt portions and shallower than the negative-pressure cavity.
    Type: Application
    Filed: January 6, 2009
    Publication date: December 17, 2009
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Mitsunobu Hanyu
  • Publication number: 20090310258
    Abstract: According to an embodiment, a slider of a head comprises a negative-pressure cavity formed in a facing surface, a leading step portion situated on an inflow side of the negative-pressure cavity, a pair of side portions opposed to each other, a trailing step portion situated on an outflow side of the negative-pressure cavity, a leading pad provided on an end portion of the leading step portion on the negative-pressure cavity side, and a plurality of recesses formed on the inflow side of the leading pad and individually opening in the inflow-side end face. The leading step portion includes a main step portion which is situated beside the inflow side of the leading pad and extends in a second direction, and at least one extended step portion extending transversely to the second direction from the main step portion toward the inflow side and situated between the recesses.
    Type: Application
    Filed: January 26, 2009
    Publication date: December 17, 2009
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Mitsunobu Hanyu, Kan Takahashi
  • Publication number: 20090141402
    Abstract: According to one embodiment, a slider of a magnetic head is provided with a negative-pressure cavity formed in a facing surface, a leading step portion situated on the upstream side of the negative-pressure cavity, a pair of side portions opposed to each other, a trailing step portion situated on the outlet end side of the negative-pressure cavity, and a pair of embossed portions formed on the facing surface so as to project from the negative-pressure cavity and provided on the outlet side of the negative-pressure cavity with respect to an airflow. The embossed portions individually extend along a second direction so as to be situated individually on the opposite sides of the trailing step portion and are formed so as to be lower than the trailing step portion with respect to the negative-pressure cavity and flush with an outlet-side end surface of the slider.
    Type: Application
    Filed: September 30, 2008
    Publication date: June 4, 2009
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Mitsunobu HANYU
  • Publication number: 20090135522
    Abstract: A pair of side pads, which are arranged to face each other by having a negative pressure generating part in the direction orthogonal to an air flow direction of a slider therebetween, are made to have three or more steps, respectively. Of the respective surfaces having the plural steps, the surfaces having a highest height respectively are not subject to a milling, and the respective surfaces of having plural steps are made to gradually have a deeper cavity depth as the surface comes closer to the air inflow end. Further, it is also effective for improving the efficiency in positive pressure generation to surround the second side pad region partially by the region of the surface being not subject to the milling, and to surround the third side pad region partially by the second surface region.
    Type: Application
    Filed: November 6, 2008
    Publication date: May 28, 2009
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kan TAKAHASHI, Mitsunobu HANYU, Kazuhiro YOSHIDA, Jun ITO
  • Patent number: 7505228
    Abstract: A slider of a head has a negative-pressure cavity which is formed in the facing surface and generates a negative pressure, a leading step portion which protrudes from the facing surface and is situated on an upstream side of the air current with respect to the negative-pressure cavity, and a leading pad which is provided on the leading step portion and faces the recording medium. The leading pad has an inlet end edge which is situated on the upstream side of the air current and extends throughout a length of the leading step portion in the transverse direction, and a plurality of recesses which individually open in the inlet end edge and extend in the longitudinal direction from the inlet end edge.
    Type: Grant
    Filed: April 11, 2006
    Date of Patent: March 17, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Mitsunobu Hanyu
  • Patent number: RE46121
    Abstract: According to one embodiment, a bearing surface of the head slider includes a leading step at the inflow end portion, a skirt portion at the inflow end portion, a leading pad on the leading step and including a junction extending to the skirt portion, first groove surfaces individually on the opposite sides of the junction and being continuous with a downstream central portion of the skirt portion, second groove surfaces on an upstream side of the first groove surfaces and formed deeper than the first groove surfaces, and negative-pressure grooves individually on the transversely opposite sides of the first groove surfaces between the second groove surfaces and the skirt portion and formed deeper than the second groove surfaces.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: August 23, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventor: Mitsunobu Hanyu