Patents by Inventor Shogo Yoshioka
Shogo Yoshioka 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).
-
Publication number: 20240162787Abstract: A motor may include a rotor; a stator comprising a stator core and a coil; a housing that houses the rotor and the stator; and a first annular member that provides a seal between a first end face of the stator core in an axial direction of the stator core and an inner wall surface of the housing. The first annular member may include a plurality of first holes through which refrigerant is injected toward a first coil end of the coil protruding from the first end face of the stator core. At least one of the plurality of first holes may be covered with at least one mesh filter.Type: ApplicationFiled: November 2, 2023Publication date: May 16, 2024Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shogo KAJIMOTO, Hiroaki URANO, Kentaro YOSHIOKA, Yukio TSUCHIYA, Yuta NARISAWA, Yutaro IKEDA, Hideki NAKAGAWA
-
Patent number: 11413690Abstract: In this small-diameter drill bit, two cutting blades having main cutting blades, of which a difference between lengths are 0.04 mm or less, are formed on a tip of a double-margin drill bit body having a diameter of 2 mm or less and a margin length/diameter ratio of 3 or more. Two tip flank faces are formed such that a first extension line extending from a linear first intersecting ridgeline between a first tip flank face and a second tip flank face of one of the flank faces to the linear first intersecting ridgeline of the other flank face is located on a side in the drill bit rotation direction with respect to the other linear first intersecting ridgeline. A distance between the first extension line and the linear first intersecting ridgeline is in a range of 0.04 mm-0.08 mm.Type: GrantFiled: April 14, 2017Date of Patent: August 16, 2022Assignee: MOLDINO Tool Engineering, Ltd.Inventor: Shogo Yoshioka
-
Patent number: 11090738Abstract: A small-diameter drill in which is a double margin having a diameter of 2 mm or less and a ratio of a margin length to a diameter of 3 or more, in which the margin length L in an axial direction from an outer peripheral end of a cutting edge to the rear ends of first and second margin parts and a ratio L/D to a diameter D are 3 or more, in which at least a surface of a chip discharge groove is provided with a hard coating made of nitride, in which a surface of the hard coating in the chip discharge groove has skewness (Ssk) defined in ISO25178 of less than 0, and in which the number of droplets having an equivalent circle diameter of 1.0 ?m or more is 5 or less per 100 ?m2 in cross-section observation of the hard coating.Type: GrantFiled: September 7, 2018Date of Patent: August 17, 2021Assignee: MOLDINO Tool Engineering, Ltd.Inventors: Shogo Yoshioka, Tomoya Sasaki
-
Publication number: 20200384551Abstract: A small-diameter drill in which is a double margin having a diameter of 2 mm or less and a ratio of a margin length to a diameter of 3 or more, in which the margin length L in an axial direction from an outer peripheral end of a cutting edge to the rear ends of first and second margin parts and a ratio L/D to a diameter D are 3 or more, in which at least a surface of a chip discharge groove is provided with a hard coating made of nitride, in which a surface of the hard coating in the chip discharge groove has skewness (Ssk) defined in ISO25178 of less than 0, and in which the number of droplets having an equivalent circle diameter of 1.0 ?m or more is 5 or less per 100 ?m2 in cross-section observation of the hard coating.Type: ApplicationFiled: September 7, 2018Publication date: December 10, 2020Inventors: Shogo Yoshioka, Tomoya Sasaki
-
Publication number: 20200324348Abstract: In this small-diameter drill bit, two cutting blades having main cutting blades, of which a difference between lengths are 0.04 mm or less, are formed on a tip of a double-margin drill bit body having a diameter of 2 mm or less and a margin length/diameter ratio of 3 or more. Two tip flank faces are formed such that a first extension line extending from a linear first intersecting ridgeline between a first tip flank face and a second tip flank face of one of the flank faces to the linear first intersecting ridgeline of the other flank face is located on a side in the drill bit rotation direction with respect to the other linear first intersecting ridgeline. A distance between the first extension line and the linear first intersecting ridgeline is in a range of 0.04 mm-0.08 mm.Type: ApplicationFiled: April 14, 2017Publication date: October 15, 2020Inventor: Shogo Yoshioka
-
Patent number: 9574773Abstract: A combustion control device includes a combustion fan motor, a control unit, a silicon diode group, a silicon diode, and a combustion-fan-disconnection detecting unit. The control unit is configured to control a combustion state of the combustion fan motor. The silicon diode group includes at least two silicon diodes coupled in series to the combustion fan motor. The silicon diode is coupled in parallel to the silicon diode group with a reversed polarity. The combustion-fan-disconnection detecting unit includes a photocoupler and a resistor. The photocoupler and the resistor are coupled in parallel to the silicon diode group and the silicon diode with the same polarity as a polarity of the silicon diode group side.Type: GrantFiled: October 10, 2013Date of Patent: February 21, 2017Assignee: SHIZUOKA SEIKI CO., LTDInventor: Shogo Yoshioka
-
Publication number: 20140178826Abstract: A combustion control device includes a combustion fan motor, a control unit, a silicon diode group, a silicon diode, and a combustion-fan-disconnection detecting unit. The control unit is configured to control a combustion state of the combustion fan motor. The silicon diode group includes at least two silicon diodes coupled in series to the combustion fan motor. The silicon diode is coupled in parallel to the silicon diode group with a reversed polarity. The combustion-fan-disconnection detecting unit includes a photocoupler and a resistor. The photocoupler and the resistor are coupled in parallel to the silicon diode group and the silicon diode with the same polarity as a polarity of the silicon diode group side.Type: ApplicationFiled: October 10, 2013Publication date: June 26, 2014Applicant: SHIZUOKA SEIKI CO., LTD.Inventor: Shogo Yoshioka
-
Patent number: 5294308Abstract: Method of predicting a short circuit in an electrolytic finishing system where a machining pulse is supplied between an electrode and a work disposed in electrolyte with a predetermined space is disclosed. An abnormal change of electrode-to-electrode voltage during the supply of the machining pulse is detected, and the supply of the machining pulse is stopped in accordance with the detection.Type: GrantFiled: June 1, 1993Date of Patent: March 15, 1994Assignee: Shizuoka Seiko Co., Ltd.Inventors: Teruo Asaoka, Haruki Sugiyama, Shogo Yoshioka
-
Patent number: 4956060Abstract: A method and apparatus for electro-chemical machining involve: supplying a pulse having a predetermined current density between an electrode and an object to be worked while they face each other with a static electrolyte therebetween; detecting the current of the pulse supplied between the electrode and the object to be worked; comparing the detected current with a reference current set in accordance with factors such as properties of the object to be worked, and increasing the current density of the pulse on the basis of the result of the comparison; supplying pulses having the increased current density between the electrode and the object to be worked a predetermined number of times; and removing electrolytic products generated between the electrode and the object to be worked.Type: GrantFiled: December 23, 1988Date of Patent: September 11, 1990Assignee: Shizuoka Seiki Co., Ltd.Inventors: Yohei Kuwabara, Teruo Asaoka, Shogo Yoshioka, Haruki Sugiyama
-
Patent number: 4880509Abstract: An electrode is positioned to form a predetermined gap between the electrode and a surface of a work, and the electrode and the work are submerged in an electrolyte. Pulses are applied to the electrode to machine the work. The electric energy of the pulse is set in such a manner that the electric energy per unit area is reduced with increase of the area.Type: GrantFiled: October 28, 1988Date of Patent: November 14, 1989Assignee: Shizuoka Seiki Co., Ltd.Inventors: Youhei Kuwabara, Teruo Asaoka, Shogo Yoshioka, Haruki Sugiyama
-
Patent number: 4861450Abstract: A power supply system is provided for an electrolytic processing apparatus of the type which has an electrode positioned to oppose a work within an electrolyte and which processes and finishes the work by discharge of at least two modes of pulses of different current densities between the work and the electrode. The power supply system includes a plurality of capacitors capable of discharging charges so as to supply discharge pulses across the work and the electrode, a plurality of discharge swithches connected between the capacitors and the work and adapted to selectively cause the charges from the capacitors to be discharged; and a control section arrangement for selectively turning the discharge switches on and off in accordance with the current densities.Type: GrantFiled: April 29, 1988Date of Patent: August 29, 1989Assignee: Shizuoka Seiki Co., Ltd.Inventors: Teruo Asaoka, Shogo Yoshioka