Patents by Inventor Shunsuke ICHIKI
Shunsuke ICHIKI 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: 10614781Abstract: A keyboard device is provided. The keyboard device includes a key and a connection portion connected between the key and a frame. The connection portion possess a first region and second regions. The first region extends in a key-longitude direction and has a smaller width than the key in a scale direction. The second regions are arranged so as to be lined in front of and behind the first region in the key-longitude direction, have flexibility in a yawing direction, and have narrower widths than the first region in a scale direction.Type: GrantFiled: September 13, 2018Date of Patent: April 7, 2020Assignee: YAMAHA CORPORATIONInventor: Shunsuke Ichiki
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Patent number: 10607577Abstract: A support assembly according to one embodiment of the present invention is provided, the support assembly including a jack rotatably supported by a support; a repetition lever rotatably supported with respect to the support; a protrusion disposed at an intersecting portion of the jack and the repetition lever; and a protrusion receiving portion for receiving the protrusion; wherein the protrusion receiving portion defines a movable range of the protrusion and limits a rotation range of the jack.Type: GrantFiled: April 13, 2018Date of Patent: March 31, 2020Assignee: YAMAHA CORPORATIONInventors: Akito Ohba, Shunsuke Ichiki
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Patent number: 10553189Abstract: A keyboard device capable of securing a wider rotation region of a hammer is provided. The keyboard device includes: a key; a connection portion connected between the key and a frame, the connection portion including: a first region extending in a key-longitude direction and having a depressed portion caved upward; and a second region arranged so as to line up with the first region in the key-longitude direction, located in at least a part of a region other than the depressed portion, having flexibility in a yawing direction; and a hammer mechanism operated according to a strike of the key. A part of the hammer mechanism is positioned in the depressed portion in a state where the key is struck.Type: GrantFiled: September 13, 2018Date of Patent: February 4, 2020Assignee: YAMAHA CORPORATIONInventor: Shunsuke Ichiki
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Publication number: 20200013378Abstract: A pivot member includes: a first member configured to pivot about a pivot axis; and a second member having a connecting surface, at least a portion of which has a flat surface. The second member is disposed such that the flat surface and the first member are opposed to each other. The second member has at least one surface different from the flat surface. A first identifier and a second identifier are provided on the at least one surface. The first identifier is visually recognizable from a first direction orthogonal to the flat surface. The second identifier is visually recognizable from the first direction and from a second direction in which the first identifier is not visually recognizable.Type: ApplicationFiled: September 18, 2019Publication date: January 9, 2020Inventors: Ken TAKAHASHI, Shunsuke ICHIKI
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Publication number: 20200005749Abstract: A keyboard device includes: a frame; a plurality of keys including a first key and a second key, the plurality of keys rotating around the frame; and a plurality of guides for restricting an operation of each of the plurality of keys, at positions different in a vertical direction, each of the plurality of guides including a first member that is softer than the frame and the plurality of keys, and a second member that is harder than the first member, wherein each of the plurality of guides is in a first state where a corresponding one of the keys comes into contact with the first member, or in a second state where the corresponding one of the keys comes into contact with the second member.Type: ApplicationFiled: September 13, 2019Publication date: January 2, 2020Inventor: Shunsuke ICHIKI
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Publication number: 20200005750Abstract: A keyboard apparatus includes a key, a frame, and a flexible section which rotates the key with respect to the frame, the flexible section having a longitudinal direction, and including a region where both a length of the flexible section in a first direction perpendicular to a scale direction and a length of the flexible section in a second direction perpendicular to the first direction continuously increase toward ends of the flexible section in a cross section perpendicular to the longitudinal direction of the flexible section.Type: ApplicationFiled: January 10, 2018Publication date: January 2, 2020Inventor: Shunsuke ICHIKI
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Publication number: 20190392788Abstract: A hammer assembly includes: a weight; and a pivot member including a first weight supporter configured to support the weight in a first direction, a second weight supporter configured to support the weight in a second direction opposite to the first direction, and a coupling portion configured to couple the first weight supporter and the second weight supporter to each other. A distance from the first weight supporter to the weight and a distance from the second weight supporter to the weight increase with decrease in distance to the coupling portion in at least a portion of a region of the weight.Type: ApplicationFiled: September 6, 2019Publication date: December 26, 2019Inventors: Ken TAKAHASHI, Shunsuke ICHIKI
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Publication number: 20190392801Abstract: A keyboard apparatus includes: a frame; keys each disposed pivotably with respect to the frame; pivot members each including: a support member disposed pivotably about a pivot shaft; and a structure connected to the support member at a position spaced apart from the pivot shaft, the structure having a specific gravity that is greater than that of the support member. A hole portion is formed in each of a first structure and a second structure, each of which is the structure of a corresponding one of a first pivot member and a second pivot member of at least two of the pivot members, such that a mass of the first structure and a mass of the second structure are different from each other. The hole portion of the first structure and the hole portion of the second structure are different from each other in shape.Type: ApplicationFiled: September 5, 2019Publication date: December 26, 2019Inventors: Ken TAKAHASHI, Shunsuke ICHIKI
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Publication number: 20190378486Abstract: A pivot mechanism includes: a shaft portion; a bearing configured to contact the shaft portion and pivot about a pivot axis; and a reinforcement protruding from an outer circumferential surface of the shaft portion. The outer circumferential surface includes a first region contactable by the bearing in a range of its pivotal movement and a second region not including the first region in a region opposed to the first region via the pivot axis. The reinforcement extends from at least a portion of the second region to an outside of the bearing in a pivot-axis direction.Type: ApplicationFiled: August 26, 2019Publication date: December 12, 2019Inventors: Hirotsugu KAMIYA, Shunsuke ICHIKI, Tsuyoshi SATO
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Publication number: 20190341014Abstract: A keyboard apparatus includes a key, a frame, a flexible section configured to rotate the key with respect to the frame, the flexible section having a longitudinal direction, and including a region where a length of the flexible section in a first direction continuously increases toward a first end and a second end of the flexible section in a cross section perpendicular to the longitudinal direction of the flexible section, and a first supporting section supporting side closer to the first end than the region, the first supporting section including a bonding section bonded to the first end, the bonding section including a first section and a second section, the first section and the second section keeping continuity with the flexible section, and a recessed section being arranged at a position, in a scale direction and sandwiched between the first section and the second section, of the bonding section.Type: ApplicationFiled: July 12, 2019Publication date: November 7, 2019Inventors: Shunsuke ICHIKI, Akito OHBA
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Publication number: 20190251939Abstract: According to an embodiment of the present invention, a keyboard apparatus includes a key, a frame, and a connecting portion having a first flexible portion, a second flexible portion serially connected to the first flexible portion between the key and the frame, and a connector for connecting the first flexible portion and the second flexible portion to each other attachably and detachably, the connecting portion turnably connecting the key to the frame by utilizing flexibility of the first flexible portion or the second flexible portion.Type: ApplicationFiled: April 24, 2019Publication date: August 15, 2019Inventor: Shunsuke ICHIKI
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Publication number: 20190206378Abstract: A keyboard device includes white keys, black keys adjacent to the white keys, and guides that are arranged between the white keys and the black keys and restrict operation by coming into contact with the white keys and the black keys. The keyboard device may further include a housing that covers parts of the white keys and the black keys, and the guide may be arranged in the region covered by the housing. The keyboard device may further include caps that are provided between the guides and the white keys and the guides and the black keys, and that have a lower Young's modulus than the guides.Type: ApplicationFiled: March 11, 2019Publication date: July 4, 2019Inventor: Shunsuke ICHIKI
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Patent number: 10311836Abstract: A support assembly includes a support rotatable along a first surface with respect to a support rail, a repetition lever rotatable on the support, and a jack rotatable on the support and disposed to at least partially overlaps the repetition lever. The repetition lever includes a first contact portion which makes contact with a regulating portion which regulates rotation, the jack includes a second contact portion which makes contact with the regulating portion which regulates rotation, and the repetition lever and the jack are provided so that the first contact portion and the second contact portion overlap each other.Type: GrantFiled: September 22, 2017Date of Patent: June 4, 2019Assignee: YAMAHA CORPORATIONInventors: Akito Ohba, Hiroshi Harimoto, Shunsuke Ichiki, Ichiro Osuga
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Patent number: 10311847Abstract: A keyboard apparatus includes: a key; a frame; and a connecting portion configured to connect the key and the frame to each other. The connecting portion includes a flexible member having a rod shape and having flexibility that enables the key to pivot with respect to the frame. The flexible member includes a portion that, in entirety of a range of pivotal movement of the key, maintains a state in which a length of a line extending along a neutral axis of the flexible member between two points located on the neutral axis is greater than a length of a straight line connecting the two points to each other.Type: GrantFiled: March 19, 2018Date of Patent: June 4, 2019Assignee: YAMAHA CORPORATIONInventors: Shunsuke Ichiki, Hirotsugu Suzuki, Ichiro Osuga
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Publication number: 20190156805Abstract: A keyboard apparatus includes: a key disposed so as to be pivotable with respect to a frame; a first member, an elastic member being disposed on at least a portion of a surface of the first member; a second member configured to be moved on the elastic member while elastically deforming the elastic member in response to pivotal movement of the key; and a hammer assembly connected to the key via the first member and the second member so as to pivot in response to pivotal movement of the key.Type: ApplicationFiled: January 22, 2019Publication date: May 23, 2019Inventors: Kento OGAWA, Shunsuke ICHIKI
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Publication number: 20190156804Abstract: A keyboard apparatus includes: a key disposed to be pivotable with respect to a frame; a hammer assembly disposed to be pivotable in response to pivotal movement of the key; a first member; a second member disposed to be slid and moved on the first member when the hammer assembly pivots in response to pivotal movement of the key; and a third member connected to the first member and configured to guide the second member such that the second member is not located at a distance greater than or equal to a predetermined distance from the first member, the third member having a shape in which a second contact area that is an area of contact between the second member and the third member is less than a first contact area that is an area of contact between the first member and the second member.Type: ApplicationFiled: January 22, 2019Publication date: May 23, 2019Inventors: Kento OGAWA, Shunsuke ICHIKI
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Publication number: 20190043463Abstract: A pivot mechanism includes: a shaft portion; a bearing configured to contact the shaft portion at a first contact and a second contact and configured to pivot about a pivot axis relative to the shaft portion; and a supporter secured to the bearing, configured to contact the shaft portion at a third contact, and bendable in a direction different from a direction from the pivot axis toward the third contact.Type: ApplicationFiled: September 17, 2018Publication date: February 7, 2019Inventor: Shunsuke ICHIKI
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Publication number: 20190043459Abstract: A pivot mechanism includes: a shaft; a bearing including an opening portion in which the shaft is to be inserted, wherein a size of the opening portion at an open end of the bearing which has flexibility is less than a diameter of the shaft, and the bearing is configured to pivot about a pivot axis relative to the shaft; and a stopper disposed spaced apart from the shaft in a direction in which the shaft inserted in the opening portion moves away from the bearing, the stopper being movable in a direction different from the direction in which the shaft moves away from the bearing.Type: ApplicationFiled: September 13, 2018Publication date: February 7, 2019Inventor: Shunsuke ICHIKI
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Publication number: 20190035371Abstract: A keyboard apparatus includes: keys; at least one frame configured to support at least one of the keys; at least one bendable portion disposed between one of the keys and the frame and having flexibility in a scale direction; and a coupler configured to couple the bendable portion and the key to each other attachably and detachably. Two couplers each as the coupler which correspond respectively to the keys adjacent to each other are disposed respectively at positions different from each other in a longitudinal direction of the key.Type: ApplicationFiled: September 18, 2018Publication date: January 31, 2019Inventor: Shunsuke ICHIKI
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Publication number: 20190027121Abstract: According to an embodiment of the present invention, a keyboard apparatus includes a key; and a connecting member connecting the key to a frame and including a rod-like flexible member arranged between the frame and the key, the key being turned to the frame by bending of the rod-like flexible member.Type: ApplicationFiled: September 24, 2018Publication date: January 24, 2019Inventors: Shunsuke ICHIKI, Ichiro OSUGA