Patents by Inventor Kenjiro Kita

Kenjiro Kita 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).

  • Patent number: 8291615
    Abstract: An inner sole structure for a sports shoe includes an upper sheet, a lower sheet below the upper sheet, and a wavy corrugated sheet interposed between the upper and lower sheets. The wavy corrugated sheet has at least two downwardly convex protrusions that form voids between the wavy corrugated sheet and the lower sheet, and that are in sliding contact with an upper surface of the lower sheet. The downwardly convex protrusions of the wavy corrugated sheet slide longitudinally along the lower sheet member when they are subjected to compressive deformation.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: October 23, 2012
    Assignee: Mizuno Corporation
    Inventors: Kenjiro Kita, Kazuhiko Suzuki
  • Patent number: 8181360
    Abstract: A sole structure 1 for a shoe comprises an upper plate 2 that is disposed on the upper side of the structure 1 and that has upraised portions 20 projecting upwardly form opposite side edge portions of the upper plate 2, a lower plate 3 disposed below the upper plate 2, and a plurality of longitudinally separated connecting portions 4, 5 and 6 that are disposed between the upper plate 2 and the lower plates 3 to form voids 10 therebetween and that elastically connect the upper plate 2 with the lower plate 3. The upper end of the connecting portion 5 extends upwardly to the side surface of the upraised portion 20 of the upper plate 2 and a projecting portion 5b that projects in the longitudinal direction is provided at the extension 5a. The extension 5a and the projecting portion 5b are fixedly attached to the side surface of the upraised portion 20.
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: May 22, 2012
    Assignee: Mizuno Corporation
    Inventors: Kenjiro Kita, Kazuhiko Suzuki, Toshiya Horioka
  • Patent number: 7624515
    Abstract: A sole structure is provided that can improve cushioning and bending properties of the sole heel portion. The sole assembly 1 is formed of an upper plate 2 disposed on the upper side of the heel portion H, a wavy lower plate 3 provided below the upper plate 2 in the heel portion H and having at least two convex portions 30, 31 that protrude downwardly and that are adapted to form voids C relative to the upper plate 2, and a plurality of cleats that are provided on the lower surfaces of the convex portions of the lower plate and/or a cleat that is provided between adjacent convex portions of the lower plate.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: December 1, 2009
    Assignee: Mizuno Corporation
    Inventors: Kenjiro Kita, Takao Oda, Akihiro Miyauchi
  • Publication number: 20090241373
    Abstract: An inner sole structure 3 for a sports shoe 1 includes an upper sheet member 30 disposed on an upper side of a heel region of the shoe 1, a lower sheet member 31 disposed below the upper sheet member 30, and a wavy corrugated sheet member 32 that is interposed between the upper sheet member 30 and the lower sheet member 31, that has at least two downwardly protruding protrusions 32a, 32b adapted to form voids V0, V1?, V1 with the upper and lower sheet members 30, 31, and that is in contact with an upper surface 31a of the lower sheet member 31. Each of downwardly convex portions 32a1, 32b1 of the protrusions 32a, 32b of the wavy corrugated sheet member 32 slides longitudinally on the lower sheet member 31 at the time of compressive deformation of the protrusions 32a, 32b.
    Type: Application
    Filed: February 5, 2009
    Publication date: October 1, 2009
    Applicant: MIZUNO CORPORATION
    Inventors: Kenjiro Kita, Kazuhiko Suzuki
  • Publication number: 20090241377
    Abstract: A sole structure 1 for a shoe comprises an upper plate 2 that is disposed on the upper side of the structure 1 and that has upraised portions 20 projecting upwardly form opposite side edge portions of the upper plate 2, a lower plate 3 disposed below the upper plate 2, and a plurality of longitudinally separated connecting portions 4, 5 and 6 that are disposed between the upper plate 2 and the lower plates 3 to form voids 10 therebetween and that elastically connect the upper plate 2 with the lower plate 3. The upper end of the connecting portion 5 extends upwardly to the side surface of the upraised portion 20 of the upper plate 2 and a projecting portion 5b that projects in the longitudinal direction is provided at the extension 5a. The extension 5a and the projecting portion 5b are fixedly attached to the side surface of the upraised portion 20.
    Type: Application
    Filed: March 12, 2009
    Publication date: October 1, 2009
    Applicant: Mizuno Corporation
    Inventors: Kenjiro Kita, Kazuhiko Suzuki, Toshiya Horioka
  • Patent number: 7513065
    Abstract: A sole structure is provided that can improve bendability and cushioning ability of the sole forefoot portion. The sole assembly 1 is formed of an upper plate 2, and a lower plate 3 provided below the upper plate 2 and spaced apart from the upper plate 2 via a void S. The lower plate 3 has a plurality of protrusions 30 that protrude toward the upper plate 2. The longitudinal path length L1 of the lower plate 3 is longer than the longitudinal path length L2 of the upper plate 2. More specifically, the path length L1 of the lower plate 3 is 40-60% longer than the path length L2 of the upper plate 2.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: April 7, 2009
    Assignee: Mizuno Corporation
    Inventors: Kenjiro Kita, Akihiro Miyauchi, Koji Ito
  • Patent number: 7484317
    Abstract: A sole structure is provided that can improve cushioning and bending properties of the sole heel portion. The sole assembly 1 is formed of an upper plate 2 disposed on the upper side of the heel portion H, a wavy lower plate 3 provided below the upper plate 2 in the heel portion H and having at least two convex portions 30, 31 that protrude downwardly and that are adapted to form voids C relative to the upper plate 2, and a plurality of outsole portions 51-55 that are divided in the longitudinal direction and that are attached to the lower surfaces of the convex portions 30, 31 of the lower plate 3.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: February 3, 2009
    Assignee: Mizuno Corporation
    Inventors: Kenjiro Kita, Takao Oda
  • Publication number: 20060283045
    Abstract: A sole structure is provided that can improve cushioning and bending properties of the sole heel portion. The sole assembly 1 is formed of an upper plate 2 disposed on the upper side of the heel portion H, a wavy lower plate 3 provided below the upper plate 2 in the heel portion H and having at least two convex portions 30, 31 that protrude downwardly and that are adapted to form voids C relative to the upper plate 2, and a plurality of outsole portions 51-55 that are divided in the longitudinal direction and that are attached to the lower surfaces of the convex portions 30, 31 of the lower plate 3.
    Type: Application
    Filed: December 22, 2005
    Publication date: December 21, 2006
    Applicant: Mizuno Corporation
    Inventors: Kenjiro Kita, Takao Oda
  • Publication number: 20060265902
    Abstract: A sole structure is provided that can improve cushioning and bending properties of the sole heel portion. The sole assembly 1 is formed of an upper plate 2 disposed on the upper side of the heel portion H, a wavy lower plate 3 provided below the upper plate 2 in the heel portion H and having at least two convex portions 30, 31 that protrude downwardly and that are adapted to form voids C relative to the upper plate 2, and a plurality of outsole portions 51-55 that are divided in the longitudinal direction and that are attached to the lower surfaces of the convex portions 30, 31 of the lower plate 3.
    Type: Application
    Filed: May 30, 2006
    Publication date: November 30, 2006
    Inventors: Kenjiro Kita, Takao Oda, Akihiro Miyauchi
  • Publication number: 20060137227
    Abstract: A sole structure is provided that can improve bendability and cushioning ability of the sole forefoot portion. The sole assembly 1 is formed of an upper plate 2, and a lower plate 3 provided below the upper plate 2 and spaced apart from the upper plate 2 via a void S. The lower plate 3 has a plurality of protrusions 30 that protrude toward the upper plate 2. The longitudinal path length L1 of the lower plate 3 is longer than the longitudinal path length L2 of the upper plate 2. More specifically, the path length L1 of the lower plate 3 is 40-60% longer than the path length L2 of the upper plate 2.
    Type: Application
    Filed: December 22, 2005
    Publication date: June 29, 2006
    Applicant: Mizuno Corporation
    Inventors: Kenjiro Kita, Akihiro Miyauchi, Koji Ito
  • Publication number: 20050000115
    Abstract: A hard elastic body (10) having a longitudinally extending cavity (13) formed therein is provided mainly at a forefoot region (F) of a sole body. The cavity (13) is formed of a first curved surface (11) extending curvedly in a longitudinal direction and a second curved surface (12) disposed under the first curved surface (11) and extending curvedly in a longitudinal direction as well. A front and rear end of the second curved surface (12) is connected to a front and rear end of the first curved surface (11) respectively and an intermediate portion of the second curved surface (12) is spaced apart downwardly from an intermediate portion of the first curved surface (11). A path (PQ1) between the front and rear end of the first curved surface (11) is substantially equal to a path (PQ2) between the front and rear end of the second curved surface (12). When the first curved surface (11) is pressed downwardly, the sole body is deformed in such a way that a rear foot region (R) of the sole body is lifted upwardly.
    Type: Application
    Filed: June 3, 2004
    Publication date: January 6, 2005
    Inventors: Takaya Kimura, Yasunori Kaneko, Takeshi Takeshita, Kazuhiko Suzuki, Kenji Araki, Natsuki Sato, Takao Oda, Kenjiro Kita
  • Patent number: 6745500
    Abstract: The present invention provides a belt fastening means that can improve fittability of a shoe and that can equally tighten an upper of the shoe to a wearer's foot without hindering the movement of the foot. A belt fastening means for a shoe includes a first belt member disposed mainly on a lateral side portion of an upper and a second belt member disposed mainly on a medial side portion of the upper. The first and second belt members are located at nearly symmetrical positions with respect to an opening portion. A proximal end portion of the first belt member is connected to a sole on the lateral side and a distal end portion thereof extends over the opening portion. The first belt member extends in a direction nearly perpendicular to a ridge line of an instep portion as viewed from a lateral side of the shoe. A proximal end portion of the second belt member is connected to the sole on the medial side and a distal end portion thereof extends over the opening portion.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: June 8, 2004
    Assignee: Mizuno Corporation
    Inventors: Kazuhiko Suzuki, Kenjiro Kita, Yoshimasa Shinomura
  • Patent number: 6711834
    Abstract: The present invention relates to a sole structure of an athletic shoe and its object is to effectively absorb a shock applied to a shoe heel portion directly after landing and to prevent pronation or supination after landing.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: March 30, 2004
    Assignee: Mizuno Corporation
    Inventor: Kenjiro Kita
  • Patent number: 6647645
    Abstract: A midsole structure for an athletic shoe includes an upper midsole (3) formed of a soft elastic material and disposed from a heel region to a forefoot region of the shoe, a lower midsole (4) formed of a soft elastic material and disposed at least at the heel region of the shoe under the upper midsole (3) and a corrugated sheet (5) sandwiched between the upper and lower midsoles (3, 4) and extending from a heel portion (H) of the upper midsole (3) to a midfoot portion (M). The corrugated sheet (5) has a laterally extending sheet portion (5a) and a medially extending sheet portion (5b). Edges (50e, 51e) of the laterally and medially extending sheet portions (5a, 5b) are overlapped in a band-shape and connected to each other. The edge (51e), or a boundary line between the laterally and medially extending sheet portions (5a, 5b) crosses a load transfer curve (TW) for a heel striker who strikes onto the ground from the heel region of the shoe.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: November 18, 2003
    Assignee: Mizuno Corporation
    Inventor: Kenjiro Kita
  • Patent number: 6625905
    Abstract: A midsole structure of an athletic shoe includes an upper midsole (3) formed of a soft elastic material and extending from a heel region to a forefoot region of the shoe, lower midsoles (4, 5) each formed of a soft elastic material and disposed at the heel region and the forefoot region under the upper midsole (3), and first and second corrugated sheets (6, 7) disposed opposite to each other between the upper midsole (3) and the lower midsoles (4, 5). Through holes (10, 11) are provided at the heel region and the midfoot region of the shoe. The through holes (10, 11) are bounded between the respective facing corrugated surfaces of the first and second corrugated sheets (6, 7). The through hole (11) provided at the midfoot region has an oblong and elongated shape in cross section.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: September 30, 2003
    Assignee: Mizuno Corporation
    Inventor: Kenjiro Kita
  • Patent number: 6606804
    Abstract: The present invention relates to a tightening system for footwear, especially in athletic shoe, and is directed to improve the fittability, supportability and stability of the shoe. The athletic shoe of the present invention includes a supporting portion (Fs) for supporting the lateral side of a foot of a shoe wearer, a first fastening element of a loop shape that surrounds the periphery of the calcaneus (f2) of the foot, and a second fastening element of a loop shape that is provided integrally with the supporting portion (Fs). The supporting portion(Fs) extends from the position in the vicinity of the head of the metatarsus on the lateral side of the foot over the rear portion of the calcaneus of the foot to the medial side.
    Type: Grant
    Filed: January 19, 2001
    Date of Patent: August 19, 2003
    Assignee: Mizuno Corporation
    Inventors: Yasunori Kaneko, Kenjiro Kita, Kazuhiko Suzuki
  • Publication number: 20030029057
    Abstract: The present invention provides a belt fastening means that can improve fittability of a shoe and that can equally tighten an upper of the shoe to a wearer's foot without hindering the movement of the foot. A belt fastening means for a shoe includes a first belt member disposed mainly on a lateral side portion of an upper and a second belt member disposed mainly on a medial side portion of the upper. The first and second belt members are located at nearly symmetrical positions with respect to an opening portion. A proximal end portion of the first belt member is connected to a sole on the lateral side and a distal end portion thereof extends over the opening portion. The first belt member extends in a direction nearly perpendicular to a ridge line of an instep portion as viewed from a lateral side of the shoe. A proximal end portion of the second belt member is connected to the sole on the medial side and a distal end portion thereof extends over the opening portion.
    Type: Application
    Filed: April 23, 2002
    Publication date: February 13, 2003
    Inventors: Kazuhiko Suzuki, Kenjiro Kita, Yoshimasa Shinomura
  • Publication number: 20030005600
    Abstract: A midsole structure for an athletic shoe includes a midsole (3) formed of a soft elastic material and extending from a shoe heel region through a midfoot region to a forefoot region and a plastic shank member (10) or shankpiece and provided at regions that cover a midfoot portion (B) of the midsole (3) and having an oblong cross sectional shape where a dimension (W) in a shoe elongated direction is greater than a dimension (h) in the vertical direction. Thus, flexural rigidity of the midfoot portion (B) of the midsole (3) increases. When a bending moment is applied to themidsole (3), the shankmember (10) effectively exercises a so-called “shank effect” and thus, bending deformation can be prevented from occurring at the midfoot portion (B) of the midsole (3). As a result, flexibility or bendability of the forefoot portion (C) of the midsole (3) can be relatively advanced.
    Type: Application
    Filed: August 31, 2001
    Publication date: January 9, 2003
    Applicant: Mizuno Corporation
    Inventor: Kenjiro Kita
  • Publication number: 20030000108
    Abstract: A midsole structure for an athletic shoe includes an upper midsole (3) formed of a soft elastic material and disposed from a heel region to a forefoot region of the shoe, a lower midsole (4) formed of a soft elastic material and disposed at least at the heel region of the shoe under the upper midsole (3) and a corrugated sheet (5) sandwiched between the upper and lower midsoles (3, 4) and extending from a heel portion (H) of the upper midsole (3) to a midfoot portion (M). The corrugated sheet (5) has a laterally extending sheet portion (5a) and a medially extending sheet portion (5b). Edges (50e, 51e) of the laterally and medially extending sheet portions (5a, 5b) are overlapped in a band-shape and connected to each other. The edge (51e), or a boundary line between the laterally and medially extending sheet portions (5a, 5b) crosses a load transfer curve (Tw) for a heel striker who strikes onto the ground from the heel region of the shoe.
    Type: Application
    Filed: August 31, 2001
    Publication date: January 2, 2003
    Applicant: Mizuno Corporation
    Inventor: Kenjiro Kita
  • Publication number: 20030000109
    Abstract: A midsole structure of an athletic shoe includes an upper midsole (3) formed of a soft elastic material and extending from a heel region to a forefoot region of the shoe, lower midsoles (4, 5) each formed of a soft elastic material and disposed at the heel region and the forefoot region under the upper midsole (3), and a first and second corrugated sheet (6, 7) disposed opposite to each other between the upper midsole (3) and the lower midsoles (4, 5). Trough holes (10, 11) are provided at the heel region and the midfoot region of the shoe. The through holes (10, 11) are formed of each corrugated surface of the first and second corrugated sheets (6, 7). The through hole (11) provided at the midfoot region has an oblong and elongated shape in cross section.
    Type: Application
    Filed: August 31, 2001
    Publication date: January 2, 2003
    Applicant: Mizuno Corporation
    Inventor: Kenjiro Kita