Patents by Inventor Taro Abe
Taro Abe 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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Publication number: 20240077297Abstract: An eddy current sensor assembly includes an eddy current sensor and an output signal processing circuit that processes an output signal from the eddy current sensor. The output signal processing circuit includes a mixer circuit that accepts the output signal and a signal of the predetermined frequency as input, multiplies the two signals received as input, and outputs an output signal obtained by the multiplication, and a low-pass filter that accepts the output signal output by the mixer circuit as input, cuts a high-frequency signal included in the output signal received as input, and outputs at least a direct-current (DC) signal.Type: ApplicationFiled: November 8, 2023Publication date: March 7, 2024Inventors: Hiroto YAMADA, Taro TAKAHASHI, Hiroaki SHIBUE, Atsushi ABE, Shinpei TOKUNAGA
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Patent number: 10449611Abstract: In the ball end mill, at least two end cutting edges are extended to the vicinity of an axis at a tip portion of an end mill main body which rotates around the axis. In two gashes in which two end cutting edges adjacent to each other in a circumferential direction are formed, a first gash on the end mill rotation direction side extends beyond the axis on the tip of the end mill main body and a second gash on the rear side in the end mill rotation direction does not exceed the axis. A first tip flank face which intersects with the first gash through a first end cutting edge is extended toward a second tip flank face which intersects with the second gash through a second end cutting edge.Type: GrantFiled: October 23, 2014Date of Patent: October 22, 2019Assignee: Mitsubishi Materials CorporationInventors: Takayuki Azegami, Taro Abe, Masanori Kawasaki
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Patent number: 10124422Abstract: The holder for a head replacement-type cutting tool is provided with a holder main body and a tubular coupling member 3 which is housed in an attachment hole formed on the holder main body and made of a metal material lower in hardness than the holder main body. A recessed part is formed on an inner circumferential face of the attachment hole, the coupling member is engaged with the recessed part by firmly attaching the outer circumferential face thereof on the inner circumferential face of the attachment hole, and the coupling member is provided with an attachment screw part which is screwed into a head-side screw part formed at the replacement-type cutting head.Type: GrantFiled: October 17, 2011Date of Patent: November 13, 2018Assignee: MITSUBISHI MATERIALS CORPORATIONInventors: Takayuki Azegami, Yoshihiko Kimura, Taro Abe
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Patent number: 9827620Abstract: A head replacement-type cutting tool having a holder provided at the attachment hole with the fitting part formed in a tapered shape, and the leading end face is perpendicular to the central axis. The attachment part formed in a tapered shape protrudes on the cutting head from the rear end face perpendicular to the central axis of the cutting part. The cutting head is attached to the holder in such a manner that the attachment part is fitted into the fitting part by screwing the female thread part with the male thread part and the leading end face is in contact with the rear end face. The inner diameter to outer diameter ratio d/D1 which is a ratio of the inner diameter d of the fitting part before being fitted in relation to the outer diameter D1 of the leading end part of the holder is from 0.5 to 0.8.Type: GrantFiled: October 17, 2011Date of Patent: November 28, 2017Assignee: MITSUBISHI MATERIALS CORPORATIONInventors: Taro Abe, Yoshihiko Kimura, Takayuki Azegami
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Patent number: 9550238Abstract: Provided is a replaceable machining head wherein: fractures on the tool attaching portion do not occur; the production cost is minimized; the tool life of the working tool will be lengthened; and the head body is free from a risk of falling off during replacement. In the replaceable machining head, a cutting edge section is formed on the front side of a head body; a tool attaching portion to which a working tool is to be attached, is formed on the rear end side of the cutting edge section; tool attaching faces are formed in the tool attaching portion; the surface of the head body 1 is coated with a coating film; and the number of droplets or macro particles having convex shapes with a size of 0.3 ?m to 5.0 ?m, is 200 or less, per area of 40 ?m×60 ?m on the surface of the coating film over the tool attaching faces.Type: GrantFiled: March 3, 2014Date of Patent: January 24, 2017Assignee: MITSUBISHI MATERIALS CORPORATIONInventors: Yasushi Ota, Taro Abe, Yuki Matsuoka, Takayuki Azegami
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Patent number: 9517514Abstract: An exchangeable head cutting tool contains a tool main body made of a hard material and a connecting member made of a metal material having a lower hardness than the hard material. The tool main body and the connecting member are joined by inserting a cylindrical mounting portion of the connecting member into a mounting hole formed in the tool main body, and by plastically deforming the mounting portion so as to expand a diameter thereof, thereby bringing an outer peripheral surface of the mounting portion into close contact with the inner peripheral surface of the mounting hole and thus making the outer peripheral surface of the mounting portion engage with a concave portions of the tool main body. A diameter expanding member having a higher hardness than the connecting member is press-fitted into and fixed to an inner peripheral portion of the mounting portion.Type: GrantFiled: August 30, 2012Date of Patent: December 13, 2016Assignee: MITSUBISHI MATERIALS CORPORATIONInventors: Takayuki Azegami, Taro Abe
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Publication number: 20160303664Abstract: In the ball end mill, at least two end cutting edges (9) are extended to the vicinity of an axis (O) at a tip portion of an end mill main body (1) which rotates around the axis (O). In two gashes (7) in which two end cutting edges (9) adjacent to each other in a circumferential direction are formed, a first gash (7A) on the end mill rotation direction (T) side extends beyond the axis (O) on the tip of the end mill main body (1) and a second gash (7B) on the rear side in the end mill rotation direction (T) does not exceed the axis (O). A first tip flank face (8A) which intersects with the first gash (7A) through a first end cutting edge (9A) is extended toward a second tip flank face (8B) which intersects with the second gash (7B) through a second end cutting edge (9B).Type: ApplicationFiled: October 23, 2014Publication date: October 20, 2016Applicant: MITSUBISHI MATERIALS CORPORATIONInventors: Takayuki Azegami, Taro Abe, Masanori Kawasaki
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Publication number: 20160031018Abstract: Provided is a replaceable machining head wherein: fractures on the tool attaching portion do not occur; the production cost is minimized; the tool life of the working tool will be lengthened; and the head body is free from a risk of falling off during replacement. In the replaceable machining head, a cutting edge section is formed on the front side of a head body; a tool attaching portion to which a working tool is to be attached, is formed on the rear end side of the cutting edge section; tool attaching faces are formed in the tool attaching potion; the surface of the head body 1 is coated with a coating film; and the number of droplets or macro particles having convex shapes with a size of 0.3 ?m to 5.0 ?m, is 200 or less, per area of 40 ?m×60 ?m on the surface of the coating film over the tool attaching faces.Type: ApplicationFiled: March 3, 2014Publication date: February 4, 2016Applicant: MITSUBISHI MATERIALS CORPORATIONInventors: Yasushi Ota, Taro Abe, Yuki Matsuoka, Takayuki Azegami
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Publication number: 20140308082Abstract: A head replacement-type cutting tool having a holder provided at the attachment hole with the fitting part formed in a tapered shape, and the leading end face is perpendicular to the central axis. The attachment part formed in a tapered shape protrudes on the cutting head from the rear end face perpendicular to the central axis of the cutting part. The cutting head is attached to the holder in such a manner that the attachment part is fitted into the fitting part by screwing the female thread part with the male thread part and the leading end face is in contact with the rear end face. The inner diameter to outer diameter ratio d/D1 which is a ratio of the inner diameter d of the fitting part before being fitted in relation to the outer diameter D1 of the leading end part of the holder is from 0.5 to 0.8.Type: ApplicationFiled: October 17, 2011Publication date: October 16, 2014Inventors: Taro Abe, Yoshihiko Kimura, Takayuki Azegami
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Patent number: 8845241Abstract: A radius end mill including an end mill body which is rotated around an axis thereof; a chip discharge flute being provided at an outer periphery of a tip portion of the end mill body; a gash being provided at a tip portion of the chip discharge flute; a rake face being formed on a wall face facing an end-mill rotational direction in the chip discharge flute or the gash; a cutting edge being formed on the rake face; the cutting edge including an end cutting edge, an outer peripheral cutting edge, and a convex circular-arc-shaped corner cutting edge; the end cutting edge being formed at a side ridge portion on the tip portion of the rake face; the outer peripheral cutting edge being formed at a side ridge portion on the outer peripheral side of the rake face; the convex circular-arc-shaped corner cutting edge being formed at a corner side ridge portion formed by the end cutting edge and the outer peripheral cutting edge; wherein the corner cutting edge has a positive cutting edge inclination angle; and the porType: GrantFiled: March 31, 2009Date of Patent: September 30, 2014Assignee: Mitsubishi Materials CorporationInventor: Taro Abe
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Publication number: 20140234035Abstract: The holder for a head replacement-type cutting tool is provided with a holder main body and a tubular coupling member 3 which is housed in an attachment hole formed on the holder main body and made of a metal material lower in hardness than the holder main body. A recessed part is formed on an inner circumferential face of the attachment hole, the coupling member is engaged with the recessed part by firmly attaching the outer circumferential face thereof on the inner circumferential face of the attachment hole, and the coupling member is provided with an attachment screw part which is screwed into a head-side screw part formed at the replacement-type cutting head.Type: ApplicationFiled: October 17, 2011Publication date: August 21, 2014Applicant: MITSUBISHI MATERIALS CORPORATIONInventors: Takayuki Azegami, Yoshihiko Kimura, Taro Abe
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Publication number: 20140205389Abstract: An exchangeable head cutting tool contains a tool main body made of a hard material and a connecting member made of a metal material having a lower hardness than the hard material. The tool main body and the connecting member are joined by inserting a cylindrical mounting portion of the connecting member into a mounting hole formed in the tool main body, and by plastically deforming the mounting portion so as to expand a diameter thereof, thereby bringing an outer peripheral surface of the mounting portion into close contact with the inner peripheral surface of the mounting hole and thus making the outer peripheral surface of the mounting portion engage with a concave portions of the tool main body. A diameter expanding member having a higher hardness than the connecting member is press-fitted into and fixed to an inner peripheral portion of the mounting portion.Type: ApplicationFiled: August 30, 2012Publication date: July 24, 2014Applicant: MITSUBISHI MATERIALS CORPORATIONInventors: Takayuki Azegami, Taro Abe
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Patent number: 8734069Abstract: A rotary cutting tool is provided with a tool body having a shank portion and a neck portion, an insert attachment seat formed at the tip of the neck portion, and a cutting insert detachably mounted on the insert attachment seat so as to be coaxial with the axis line of the shank portion. The insert attachment seat is provided with a bottom surface on which a side surface which serves as a seating surface of a cutting insert is seated and a wall surface in contact with a peripheral surface of the cutting insert. On the bottom surface, a plurality of recessed grooves which are recessed from the bottom surface to extend in the circumferential direction of the neck portion, with the both ends being opened on an outer peripheral surface of the neck portion.Type: GrantFiled: September 25, 2009Date of Patent: May 27, 2014Assignee: Mitsubishi Materials CorporationInventors: Taro Abe, Toru Narita, Sachio Yamada
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Publication number: 20110214552Abstract: The rotary cutting tool is provided with a tool body (11) having a shank portion (11A) and a neck portion (11B), an insert attachment seat (12) formed at the tip of the neck portion (11 B), and a cutting insert detachably mounted on the insert attachment seat (12) so as to be coaxial with the axis line of the shank portion (11A). The insert attachment seat (12) is provided with a bottom surface (12A) on which a side surface which serves as a seating surface of a cutting insert is seated and a wall surface (12B) in contact with a peripheral surface of the cutting insert. On the bottom surface (12A), a plurality of recessed grooves (20) which are recessed from the bottom surface to extend in the circumferential direction of the neck portion (11 B), with the both ends being opened on an outer peripheral surface of the neck portion (11B), are formed so as to travel around the insert attachment seat (12) around the axis line (O).Type: ApplicationFiled: September 25, 2009Publication date: September 8, 2011Inventors: Taro Abe, Toru Narita, Sachio Yamada
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Publication number: 20110008113Abstract: A radius end mill including an end mill body which is rotated around an axis thereof; a chip discharge flute being provided at an outer periphery of a tip portion of the end mill body; a gash being provided at a tip portion of the chip discharge flute; a rake face being formed on a wall face facing an end-mill rotational direction in the chip discharge flute or the gash; a cutting edge being formed on the rake face; the cutting edge including an end cutting edge, an outer peripheral cutting edge, and a convex circular-arc-shaped corner cutting edge; the end cutting edge being formed at a side ridge portion on the tip portion of the rake face; the outer peripheral cutting edge being formed at a side ridge portion on the outer peripheral side of the rake face; the convex circular-arc-shaped corner cutting edge being formed at a corner side ridge portion formed by the end cutting edge and the outer peripheral cutting edge; a chip breaker being formed on a side ridge portion of the rake face at least along the coType: ApplicationFiled: March 31, 2009Publication date: January 13, 2011Applicant: Mitsubishi Materials CorporationInventor: Taro Abe
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Publication number: 20110008112Abstract: A radius end mill including an end mill body which is rotated around an axis thereof; a chip discharge flute being provided at an outer periphery of a tip portion of the end mill body; a gash being provided at a tip portion of the chip discharge flute; a rake face being formed on a wall face facing an end-mill rotational direction in the chip discharge flute or the gash; a cutting edge being formed on the rake face; the cutting edge including an end cutting edge, an outer peripheral cutting edge, and a convex circular-arc-shaped corner cutting edge; the end cutting edge being formed at a side ridge portion on the tip portion of the rake face; the outer peripheral cutting edge being formed at a side ridge portion on the outer peripheral side of the rake face; the convex circular-arc-shaped corner cutting edge being formed at a corner side ridge portion formed by the end cutting edge and the outer peripheral cutting edge; wherein the corner cutting edge has a positive cutting edge inclination angle; and the porType: ApplicationFiled: March 31, 2009Publication date: January 13, 2011Applicant: MITSUBISHI MATERIALS CORPORATIONInventor: Taro Abe
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Patent number: 7101127Abstract: Eccentricity is not allowed to occur in a blade section, and a blade section is maintained in a stable installation state. A hook section 124, which is composed of a shaft section 125 and an end section 126 provided with a corner section 132 that protrudes as a ledge farther to the outside in the radial direction than this shaft section 125, is formed in a blade section 120. A hook hole 144, which allows the passage of end section 126 of hook section 124, is formed in a bolt section 140. Engaging sections 150 are formed around hook hole 144.Type: GrantFiled: March 3, 2003Date of Patent: September 5, 2006Assignee: Mitsubishi Materials CorporationInventors: Yoshihiko Kimura, Toru Nakamura, Taro Abe, Takahiro Sato
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Publication number: 20030164597Abstract: Eccentricity is not allowed to occur in a blade section, and a blade section is maintained in a stable installation state. A hook section 124, which is composed of a shaft section 125 and an end section 126 provided with a corner section 132 that protrudes as a ledge farther to the outside in the radial direction than this shaft section 125, is formed in a blade section 120. A hook hole 144, which allows the passage of end section 126 of hook section 124, is formed in a bolt section 140. Engaging sections 150 are formed around hook hole 144.Type: ApplicationFiled: March 3, 2003Publication date: September 4, 2003Applicant: MITSUBISHI MATERIALS CORPORATIONInventors: Yoshihiko Kimura, Toru Nakamura, Taro Abe, Takahiro Sato
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Patent number: 5923064Abstract: A semiconductor memory device is provided which includes: a memory cell portion including at least one gate electrode formed on a semiconductor substrate and a plurality of source/drain regions formed in the semiconductor substrate and extending parallel to each other and perpendicular to the gate electrode, the gate electrode and the plurality of source/drain regions constituting a plurality of first conductivity type channel transistors; and a peripheral circuitry portion including a first conductivity type channel transistor having a gate electrode formed on the semiconductor substrate and source/drain regions; wherein channels of the first conductivity type channel transistors in the memory cell portion each have a higher impurity concentration than a channel of the first conductivity type channel transistor in the peripheral circuitry portion.Type: GrantFiled: May 9, 1997Date of Patent: July 13, 1999Assignee: Sharp Kabushiki KaishaInventor: Taro Abe
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Patent number: 5866456Abstract: A semiconductor memory device is provided which includes: a memory cell portion including at least one gate electrode formed on a semiconductor substrate and a plurality of source/drain regions formed in the semiconductor substrate and extending parallel to each other and perpendicular to the gate electrode, the gate electrode and the plurality of source/drain regions constituting a plurality of first conductivity type channel transistors; and a peripheral circuitry portion including a first conductivity type channel transistor having a gate electrode formed on the semiconductor substrate and source/drain regions; wherein channels of the first conductivity type channel transistors in the memory cell portion each have a higher impurity concentration than a channel of the first conductivity type channel transistor in the peripheral circuitry portion.Type: GrantFiled: September 20, 1996Date of Patent: February 2, 1999Assignee: Sharp Kabushiki KaishaInventor: Taro Abe