Patents by Inventor Minoru Kuroda
Minoru Kuroda 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: 9590463Abstract: A holder is used while attached to a chassis of a vibration generator that moves a vibrator to generate a vibration. The holder includes a vibrator retention unit retaining the vibrator, a fixed unit fixed to the chassis, and an arm. The arm connects the fixed unit and the vibrator retention unit, and the arm supports the vibrator retention unit while the vibrator retention unit can be displaced with respect to the fixed unit. The fixed unit, the arm, and the vibrator retention unit are integrally formed using resin.Type: GrantFiled: September 14, 2012Date of Patent: March 7, 2017Assignee: MINEBEA CO., LTD.Inventors: Minoru Kuroda, Makoto Tanaka
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Patent number: 9350220Abstract: A vibration generator includes a vibrator, a holder, and a plurality of coils. The vibrator includes a magnet and has a plate shape parallel to a horizontal surface. The holder is attached to a chassis and holds the vibrator such that the vibrator can be displaced with respect to the vibrator. The plurality of coils generate a magnetic field for changing at least one of a position and a posture of the vibrator with respect to the chassis. Each of the plurality of coils is a thin coil, and is arranged face to face with the vibrator. The vibrator can move at least according to magnetization of the coils, while deforming a portion of the holder.Type: GrantFiled: January 22, 2013Date of Patent: May 24, 2016Assignee: MINEBEA CO., LTD.Inventor: Minoru Kuroda
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Publication number: 20150333575Abstract: A small DC motor includes a motor frame having a cylindrical portion, the cylindrical portion having a constant thickness and having a cross section in a shape that comprises four sides and connecting portions, each of the connecting portions connecting adjacent two of the four sides and being located inward from a corresponding corner in a quadrangle comprising the four sides; and a magnet having a circumferential surface on an inside thereof and having conformable contact with the motor frame on an outside thereof.Type: ApplicationFiled: July 29, 2015Publication date: November 19, 2015Applicant: MINEBEA CO., LTD.Inventor: Minoru KURODA
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Patent number: 9124162Abstract: A small DC motor includes a motor frame having a cylindrical portion, the cylindrical portion having a constant thickness and having a cross section in a shape that comprises four sides and connecting portions, each of the connecting portions connecting adjacent two of the four sides and being located inward from a corresponding corner in a quadrangle comprising the four sides; and a magnet having a circumferential surface on an inside thereof and having conformable contact with the motor frame on an outside thereof.Type: GrantFiled: July 24, 2012Date of Patent: September 1, 2015Assignee: MINEBEA CO., LTD.Inventor: Minoru Kuroda
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Publication number: 20150180299Abstract: There is provided a DC brush motor that is provided with: a magnet; an armature configured to rotate relative to the magnet about a rotary axis, the armature comprising a commutator; a bracket configured to cover one end portion of the magnet and the armature at one side along the rotary axis; a female terminal that is fixed to the bracket; a brush that is electrically connected to the female terminal, and a sealing member that is fixed to the bracket. The bracket is provided with a recessed portion formed on an outer periphery thereof and configured to accommodate therein the female terminal. The sealing member is configured to seal between the recessed portion and a space where the commutator and the brush exist.Type: ApplicationFiled: December 18, 2014Publication date: June 25, 2015Inventors: Minoru KURODA, Masami OTA
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Publication number: 20130076178Abstract: A holder is used while attached to a chassis of a vibration generator that moves a vibrator to generate a vibration. The holder includes a vibrator retention unit retaining the vibrator, a fixed unit fixed to the chassis, and an arm. The arm connects the fixed unit and the vibrator retention unit, and the arm supports the vibrator retention unit while the vibrator retention unit can be displaced with respect to the fixed unit. The fixed unit, the arm, and the vibrator retention unit are integrally formed using resin.Type: ApplicationFiled: September 14, 2012Publication date: March 28, 2013Applicant: MINEBEA MOTOR MANUFACTURING CORPORATIONInventors: Minoru KURODA, Makoto TANAKA
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Publication number: 20120286611Abstract: A small DC motor includes a motor frame having a cylindrical portion, the cylindrical portion having a constant thickness and having a cross section in a shape that comprises four sides and connecting portions, each of the connecting portions connecting adjacent two of the four sides and being located inward from a corresponding corner in a quadrangle comprising the four sides; and a magnet having a circumferential surface on an inside thereof and having conformable contact with the motor frame on an outside thereof.Type: ApplicationFiled: July 24, 2012Publication date: November 15, 2012Inventor: Minoru KURODA
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Patent number: 8264112Abstract: A small DC motor includes a motor frame having a cylindrical portion, the cylindrical portion having a constant thickness and having a cross section in a shape that comprises four sides and connecting portions, each of the connecting portions connecting adjacent two of the four sides and being located inward from a corresponding corner in a quadrangle comprising the four sides; and a magnet having a circumferential surface on an inside thereof and having conformable contact with the motor frame on an outside thereof.Type: GrantFiled: July 8, 2011Date of Patent: September 11, 2012Assignee: Minnebea Motor Manufacturing CorporationInventor: Minoru Kuroda
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Patent number: 8183730Abstract: A small DC motor includes a motor frame having a cylindrical portion, the cylindrical portion having a constant thickness and having a cross section in a shape that comprises four sides and connecting portions, each of the connecting portions connecting adjacent two of the four sides and being located inward from a corresponding corner in a quadrangle comprising the four sides; and a magnet having a circumferential surface on an inside thereof and having conformable contact with the motor frame on an outside thereof.Type: GrantFiled: July 8, 2011Date of Patent: May 22, 2012Assignee: Minebea Motor Manufacturing CorporationInventor: Minoru Kuroda
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Publication number: 20110266906Abstract: A small DC motor includes a motor frame having a cylindrical portion, the cylindrical portion having a constant thickness and having a cross section in a shape that comprises four sides and connecting portions, each of the connecting portions connecting adjacent two of the four sides and being located inward from a corresponding corner in a quadrangle comprising the four sides; and a magnet having a circumferential surface on an inside thereof and having conformable contact with the motor frame on an outside thereof.Type: ApplicationFiled: July 8, 2011Publication date: November 3, 2011Inventor: Minoru KURODA
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Publication number: 20110266907Abstract: A small DC motor includes a motor frame having a cylindrical portion, the cylindrical portion having a constant thickness and having a cross section in a shape that comprises four sides and connecting portions, each of the connecting portions connecting adjacent two of the four sides and being located inward from a corresponding corner in a quadrangle comprising the four sides; and a magnet having a circumferential surface on an inside thereof and having conformable contact with the motor frame on an outside thereof.Type: ApplicationFiled: July 8, 2011Publication date: November 3, 2011Inventor: Minoru KURODA
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Patent number: 8013489Abstract: A small DC motor includes a motor frame having a cylindrical portion, the cylindrical portion having a constant thickness and having a cross section in a shape that comprises four sides and connecting portions, each of the connecting portions connecting adjacent two of the four sides and being located inward from a corresponding corner in a quadrangle comprising the four sides; and a magnet having a circumferential surface on an inside thereof and having conformable contact with the motor frame on an outside thereof.Type: GrantFiled: March 10, 2010Date of Patent: September 6, 2011Assignee: Minebea Motor Manufacturing CorporationInventor: Minoru Kuroda
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Patent number: 7800270Abstract: A small DC motor includes: a motor frame including a cylindrical portion, the cylindrical portion having a constant thickness and having a cross section in a shape that includes four sides and connecting portions, each of the connecting portions connecting adjacent two of the four sides and being located inward from a corresponding corner in a quadrangle including the four sides; field magnets; and an armature assembly, wherein the field magnets are provided so as to be spaced apart from each other, and the small DC motor includes an air gap between each of the four sides and a radially outermost surface of the armature assembly, the air gap being a minimum size needed to rotate the armature assembly.Type: GrantFiled: November 19, 2009Date of Patent: September 21, 2010Assignee: Minebea Motor Manufacturing CorporationInventor: Minoru Kuroda
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Publication number: 20100181857Abstract: A small DC motor includes a motor frame having a cylindrical portion, the cylindrical portion having a constant thickness and having a cross section in a shape that comprises four sides and connecting portions, each of the connecting portions connecting adjacent two of the four sides and being located inward from a corresponding corner in a quadrangle comprising the four sides; and a magnet having a circumferential surface on an inside thereof and having conformable contact with the motor frame on an outside thereof.Type: ApplicationFiled: March 10, 2010Publication date: July 22, 2010Inventor: Minoru Kuroda
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Patent number: 7732962Abstract: A small DC motor includes: a motor frame including a cylindrical portion, the cylindrical portion having a constant thickness and having a cross section in a shape that includes four sides and connecting portions, each of the connecting portions connecting adjacent two of the four sides and being located inward from a corresponding corner in a quadrangle including the four sides; field magnets; and an armature assembly, wherein the field magnets are provided so as to be spaced apart from each other, and the small DC motor includes an air gap between each of the four sides and a radially outermost surface of the armature assembly, the air gap being a minimum size needed to rotate the armature assembly.Type: GrantFiled: January 22, 2009Date of Patent: June 8, 2010Assignee: Minebea Motor Manufacturing CorporationInventor: Minoru Kuroda
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Patent number: 7714472Abstract: A small DC motor includes a motor frame having a cylindrical portion, the cylindrical portion having a constant thickness and having a cross section in a shape that comprises four sides and connecting portions, each of the connecting portions connecting adjacent two of the four sides and being located inward from a corresponding corner in a quadrangle comprising the four sides; and a magnet having a circumferential surface on an inside thereof and having conformable contact with the motor frame on an outside thereof.Type: GrantFiled: February 2, 2009Date of Patent: May 11, 2010Assignee: Minebea Motor Manufacturing CorporationInventor: Minoru Kuroda
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Publication number: 20100072848Abstract: A small DC motor includes: a motor frame including a cylindrical portion, the cylindrical portion having a constant thickness and having a cross section in a shape that includes four sides and connecting portions, each of the connecting portions connecting adjacent two of the four sides and being located inward from a corresponding corner in a quadrangle including the four sides; field magnets; and an armature assembly, wherein the field magnets are provided so as to be spaced apart from each other, and the small DC motor includes an air gap between each of the four sides and a radially outermost surface of the armature assembly, the air gap being a minimum size needed to rotate the armature assembly.Type: ApplicationFiled: November 19, 2009Publication date: March 25, 2010Inventor: Minoru Kuroda
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Publication number: 20090152971Abstract: A small DC motor includes a motor frame having a cylindrical portion, the cylindrical portion having a constant thickness and having a cross section in a shape that comprises four sides and connecting portions, each of the connecting portions connecting adjacent two of the four sides and being located inward from a corresponding corner in a quadrangle comprising the four sides; and a magnet having a circumferential surface on an inside thereof and having conformable contact with the motor frame on an outside thereof.Type: ApplicationFiled: February 2, 2009Publication date: June 18, 2009Inventor: Minoru Kuroda
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Publication number: 20090134729Abstract: A small DC motor includes: a motor frame including a cylindrical portion, the cylindrical portion having a constant thickness and having a cross section in a shape that includes four sides and connecting portions, each of the connecting portions connecting adjacent two of the four sides and being located inward from a corresponding corner in a quadrangle including the four sides; field magnets; and an armature assembly, wherein the field magnets are provided so as to be spaced apart from each other, and the small DC motor includes an air gap between each of the four sides and a radially outermost surface of the armature assembly, the air gap being a minimum size needed to rotate the armature assembly.Type: ApplicationFiled: January 22, 2009Publication date: May 28, 2009Inventor: Minoru Kuroda
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Patent number: 7528515Abstract: A small DC motor includes a motor frame having a cylindrical portion, the cylindrical portion having a constant thickness and having a cross section in a shape that comprises four sides and connecting portions, each of the connecting portions connecting adjacent two of the four sides and being located inward from a corresponding corner in a quadrangle comprising the four sides; and a magnet having a circumferential surface on an inside thereof and having conformable contact with the motor frame on an outside thereof.Type: GrantFiled: May 26, 2006Date of Patent: May 5, 2009Assignee: Minebea Motor Manufacturing CorporationInventor: Minoru Kuroda