Patents by Inventor Jyunya Asari
Jyunya Asari 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: 10226969Abstract: A circumferential depressed portion extended along a tire circumferential direction is formed on an outer surface of a tire side portion of a pneumatic tire. On a tire cross-sectional plane, a rim-side outer surface formed in a range from a rim separation point to an inner-side end of the circumferential depressed portion along a tire radial direction is formed along a given circular-arc curved line. When a virtual circular-arc curved line drawn by extending the given circular-arc curved line is defined, a depth of the circumferential depressed portion with reference to the virtual circular-arc curved line is not smaller than 5 mm and not larger than 35 mm in a range of not smaller than 22% and not larger than 28% of a tire height from an bead end.Type: GrantFiled: February 21, 2014Date of Patent: March 12, 2019Assignee: BRIDGESTONE CORPORATIONInventor: Jyunya Asari
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Patent number: 9254720Abstract: An object of the present invention is to provide a pneumatic tire for a construction vehicle capable of suppressing deterioration in heat release property while maintaining high wear resistance especially when used as driving wheels. A central area 20 is provided with a central narrow groove 21 continuously extending along a tire circumferential direction in a zigzag form. Each side area 30 is provided with a side narrow groove 32. A width direction narrow groove 22 is provided The central narrow groove 21, the side narrow grooves 32 and the width direction narrow grooves 22 define plural polygonal block land portions 23 having five or more straight sides in the tread portion 10. The block land portions are lined in the tire circumferential direction to form two block arrays arranged next to each other.Type: GrantFiled: January 26, 2010Date of Patent: February 9, 2016Assignee: BRIDGESTONE CORPORATIONInventor: Jyunya Asari
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Publication number: 20150231934Abstract: A circumferential depressed portion extended along a tire circumferential direction is formed on an outer surface of a tire side portion of a pneumatic tire. On a tire cross-sectional plane, a rim-side outer surface formed in a range from a rim separation point to an inner-side end of the circumferential depressed portion along a tire radial direction is formed along a given circular-arc curved line. When a virtual circular-arc curved line drawn by extending the given circular-arc curved line is defined, a depth of the circumferential depressed portion with reference to the virtual circular-arc curved line is not smaller than 5 mm and not larger than 35 mm in a range of not smaller than 22% and not larger than 28% of a tire height from an bead end.Type: ApplicationFiled: February 21, 2014Publication date: August 20, 2015Inventor: Jyunya Asari
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Publication number: 20140138015Abstract: The present invention provides a tire having improved durability of a bead portion.Type: ApplicationFiled: January 24, 2014Publication date: May 22, 2014Applicant: BRIDGESTONE CORPORATIONInventor: Jyunya ASARI
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Patent number: 8291952Abstract: The object of the present invention is to provide a pneumatic radial tire for heavy load which effectively improve three kinds of durability, i.e., durability of the turn-up portion of the carcass, durability of the rubber layer of the carcass and cut resistance of the carcass cords. A steel radial carcass 12 is composed of main carcass portion 12M and turn-up portions 12E. The tire is fitted on a standard rim 20 and suppose that P1 is a position on the tire outer surface with a radial distance of (R+1.18*Hf) from the central axis of the tire, P2 is a position on the tire outer surface with a radial distance of (R+0.81*Hf) from the central axis of the tire, T1 and T2 are intersections of normal lines drawn from P1 and P2, respectively, to the main carcass portion 12M and the turn-up portion 12E, M1 and M2 are intersections of the normal lines and the main carcass portion 12M. T1, T2, M1 and M2 satisfy given mutual positional relationships.Type: GrantFiled: October 29, 2007Date of Patent: October 23, 2012Assignee: Bridgestone CorporationInventor: Jyunya Asari
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Publication number: 20120006455Abstract: An object of the present invention is to provide a pneumatic tire for a construction vehicle capable of suppressing deterioration in heat release property while maintaining high wear resistance especially when used as driving wheels. A central area 20 is provided with a central narrow groove 21 continuously extending along a tire circumferential direction in a zigzag form. Each side area 30 is provided with a side narrow groove 32. A width direction narrow groove 22 is provided The central narrow groove 21, the side narrow grooves 32 and the width direction narrow grooves 22 define plural polygonal block land portions 23 having five or more straight sides in the tread portion 10. The block land portions are lined in the tire circumferential direction to form two block arrays arranged next to each other.Type: ApplicationFiled: January 26, 2010Publication date: January 12, 2012Applicant: BRIDGESTONE CORPORATIONInventor: Jyunya Asari
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Publication number: 20110192517Abstract: The present invention provides a tire having improved durability of a bead portion.Type: ApplicationFiled: September 3, 2009Publication date: August 11, 2011Applicant: BRIDGESTONE CORPORATIONInventor: Jyunya Asari
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Publication number: 20100059161Abstract: The object of the present invention is to provide a pneumatic radial tire for heavy load which effectively improve three kinds of durability, i.e., durability of the turn-up portion of the carcass, durability of the rubber layer of the carcass and cut resistance of the carcass cords. A steel radial carcass 12 is composed of main carcass portion 12M and turn-up portions 12E. The tire is fitted on a standard rim 20 and suppose that P1 is a position on the tire outer surface with a radial distance of (R+1.18*Hf) from the central axis of the tire, P2 is a position on the tire outer surface with a radial distance of (R+0.81*Hf) from the central axis of the tire, T1 and T2 are intersections of normal lines drawn from P1 and P2, respectively, to the main carcass portion 12M and the turn-up portion 12E, M1 and M2 are intersections of the normal lines and the main carcass portion 12M. T1, T2, M1 and M2 satisfy given mutual positional relationships.Type: ApplicationFiled: October 29, 2007Publication date: March 11, 2010Inventor: Jyunya Asari