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).
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Patent number: 8611051Abstract: 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: GrantFiled: February 25, 2013Date of Patent: December 17, 2013Assignee: Kabushiki Kaisha ToshibaInventor: Mitsunobu Hanyu
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Patent number: 8320082Abstract: 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: GrantFiled: June 30, 2011Date of Patent: November 27, 2012Assignee: Kabushiki Kaisha ToshibaInventor: Mitsunobu Hanyu
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Patent number: 8264794Abstract: 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: GrantFiled: October 25, 2010Date of Patent: September 11, 2012Assignee: Kabushiki Kaisha ToshibaInventor: Mitsunobu Hanyu
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Patent number: 8194350Abstract: 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: GrantFiled: April 14, 2010Date of Patent: June 5, 2012Assignee: Kabushiki Kaisha ToshibaInventor: Mitsunobu Hanyu
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Patent number: 8179638Abstract: 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: GrantFiled: December 21, 2010Date of Patent: May 15, 2012Assignee: Kabushiki Kaisha ToshibaInventor: Mitsunobu Hanyu
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Patent number: 8111482Abstract: 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: GrantFiled: June 17, 2008Date of Patent: February 7, 2012Assignee: Kabushiki Kaisha ToshibaInventor: Mitsunobu Hanyu
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Publication number: 20120002327Abstract: 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: ApplicationFiled: June 30, 2011Publication date: January 5, 2012Applicant: KABUSHIKI KAISHA TOSHIBAInventor: Mitsunobu Hanyu
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Patent number: 7978435Abstract: 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: GrantFiled: December 3, 2007Date of Patent: July 12, 2011Assignee: Kabushiki Kaisha ToshibaInventor: Mitsunobu Hanyu
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Publication number: 20110157748Abstract: 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: ApplicationFiled: October 25, 2010Publication date: June 30, 2011Applicant: KABUSHIKI KAISHA TOSHIBAInventor: Mitsunobu HANYU
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Patent number: 7961432Abstract: 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: GrantFiled: September 28, 2009Date of Patent: June 14, 2011Assignee: Kabushiki Kaisha ToshibaInventor: Mitsunobu Hanyu
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Publication number: 20110090597Abstract: 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: ApplicationFiled: December 21, 2010Publication date: April 21, 2011Applicant: KABUSHIKI KAISHA TOSHIBAInventor: Mitsunobu HANYU
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Publication number: 20100321834Abstract: 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: ApplicationFiled: April 14, 2010Publication date: December 23, 2010Applicant: KABUSHIKI KAISHA TOSHIBAInventor: MITSUNOBU HANYU
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Publication number: 20100149691Abstract: 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: ApplicationFiled: September 28, 2009Publication date: June 17, 2010Applicant: KABUSHIKI KAISHA TOSHIBAInventor: Mitsunobu HANYU
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Patent number: 7719794Abstract: 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: GrantFiled: January 26, 2009Date of Patent: May 18, 2010Assignee: Kabushiki Kaisha ToshibaInventors: Mitsunobu Hanyu, Kan Takahashi
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Publication number: 20090310259Abstract: 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: ApplicationFiled: January 6, 2009Publication date: December 17, 2009Applicant: KABUSHIKI KAISHA TOSHIBAInventor: Mitsunobu Hanyu
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Publication number: 20090310258Abstract: 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: ApplicationFiled: January 26, 2009Publication date: December 17, 2009Applicant: Kabushiki Kaisha ToshibaInventors: Mitsunobu Hanyu, Kan Takahashi
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Publication number: 20090141402Abstract: 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: ApplicationFiled: September 30, 2008Publication date: June 4, 2009Applicant: KABUSHIKI KAISHA TOSHIBAInventor: Mitsunobu HANYU
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Publication number: 20090135522Abstract: 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: ApplicationFiled: November 6, 2008Publication date: May 28, 2009Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Kan TAKAHASHI, Mitsunobu HANYU, Kazuhiro YOSHIDA, Jun ITO
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Patent number: 7505228Abstract: 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: GrantFiled: April 11, 2006Date of Patent: March 17, 2009Assignee: Kabushiki Kaisha ToshibaInventor: Mitsunobu Hanyu
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Patent number: RE46121Abstract: 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: GrantFiled: September 11, 2014Date of Patent: August 23, 2016Assignee: KABUSHIKI KAISHA TOSHIBAInventor: Mitsunobu Hanyu