Patents by Inventor Tetsuya Ohba
Tetsuya Ohba 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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Publication number: 20100176894Abstract: A transmission line converter in which a rectangular waveguide provided under a transmission line may be reduced in size. The transmission line converter includes: a rectangular waveguide; a slot provided in a wall surface of the rectangular waveguide; and a transmission line which extends in a direction of a tube axis of the rectangular waveguide and includes signal conductors and a ground conductor, the slot is provided in a narrower wall surface of the rectangular waveguide and has a shape in which a central portion of the slot includes an oblique portion to the tube axis of the rectangular waveguide and at least one of both end portions of the oblique portion includes a portion parallel to the tube axis of the rectangular waveguide, and the wall surface of the rectangular waveguide in which the slot is provided is a part of the ground conductor.Type: ApplicationFiled: July 5, 2007Publication date: July 15, 2010Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Yukihiro Tahara, Hideyuki Oh-Hashi, Tetsuya Ohba, Satoshi Yamaguchi
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Publication number: 20100109408Abstract: A seat reclining apparatus includes: a fixing member; a pivot member having an internal tooth located on an inner circumference surface of the circular recessed portion; a lock tooth having an external tooth arranged to be engaged with the internal tooth of the pivot member, the lock tooth being arranged to be moved along an orbit between an engagement position and a disengagement position; a cam; an urging member; the lock tooth including a pair of guide protrusions which are disposed on both sides of the lock tooth, and which protrude axially toward the fixing member, and the fixing member including a pair of guide grooves formed on an inside surface of the fixing member, and arranged to receive, respectively, the guide protrusions of the lock tooth to guide the lock tooth along the orbit between the engagement position and the disengagement position.Type: ApplicationFiled: October 27, 2009Publication date: May 6, 2010Inventor: Tetsuya OHBA
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Publication number: 20100026071Abstract: A seat reclining apparatus includes a base member; a pivot member having an internal tooth gear; a cylindrical holder covering the outer circumference surface of the pivot member; a lock tooth having an external tooth gear arranged to be engaged with the internal tooth gear; and a cam arranged to push the lock tooth to engage or disengage the external tooth gear with or from the internal tooth gear; the pivot member including a bearing inner circumference surface located on the circular recessed portion, on the base member's side of the internal tooth gear in the axial direction, the base member including a circular support outer circumference surface on which the bearing inner circumference surface is slid, and the bearing inner circumference surface and the support outer circumference surface being arranged to position the pivot member relative to the base member in the radial direction.Type: ApplicationFiled: June 26, 2009Publication date: February 4, 2010Inventor: Tetsuya OHBA
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Patent number: 7588294Abstract: A seat reclining device includes a base member formed with a shaft hole; a rotating member including an internal gear; at least three lock members each including an external gear; a shaft portion formed integrally with the base member and including a convex guiding surface for swinging the lock member along a circular orbit; a cam provided with an axially projecting portion passing through the shaft hole; and at least three guide projections formed integrally with the base member. The axially projecting portion includes a centering outer peripheral surface which is slidably in contact with an inner peripheral surface of the shaft hole. The guide projections and the lock members are located alternately in the circumferential direction.Type: GrantFiled: October 31, 2007Date of Patent: September 15, 2009Assignee: Fuji Kiko Co., Ltd.Inventors: Tadashi Matsumoto, Tetsuya Ohba
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Publication number: 20080122282Abstract: A seat reclining device includes a base member formed with a shaft hole; a rotating member including an internal gear; at least three lock members each including an external gear; a shaft portion formed integrally with the base member and including a convex guiding surface for swinging the lock member along a circular orbit; a cam provided with an axially projecting portion passing through the shaft hole; and at least three guide projections formed integrally with the base member. The axially projecting portion includes a centering outer peripheral surface which is slidably in contact with an inner peripheral surface of the shaft hole. The guide projections and the lock members are located alternately in the circumferential direction.Type: ApplicationFiled: October 31, 2007Publication date: May 29, 2008Inventors: Tadashi Matsumoto, Tetsuya Ohba
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Patent number: 7341311Abstract: A seat reclining device is comprised of a base member connected to one of a seat back and a seat cushion; a rotating member connected to the other of the seat back and the seat cushion; a lock tooth having an external gear engageable with the internal gear of the rotating member; a shaft portion having an inner-periphery guiding surface for swinging the lock tooth on the shaft portion; and a weak portion formed at an end portion of the lock tooth opposite to the external gear across the shaft portion.Type: GrantFiled: January 24, 2007Date of Patent: March 11, 2008Assignee: Fuji Kiko Co., Ltd.Inventor: Tetsuya Ohba
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Publication number: 20070176478Abstract: A seat reclining device is comprised of a base member connected to one of a seat back and a seat cushion; a rotating member connected to the other of the seat back and the seat cushion; a lock tooth having an external gear engageable with the internal gear of the rotating member; a shaft portion having an inner-periphery guiding surface for swinging the lock tooth on the shaft portion; and a weak portion formed at an end portion of the lock tooth opposite to the external gear across the shaft portion.Type: ApplicationFiled: January 24, 2007Publication date: August 2, 2007Inventor: Tetsuya Ohba
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Patent number: 7150503Abstract: An automotive seat reclining device includes a base member coupled to one of a seat cushion and a seat back, a pivot member coupled to the other of the seat cushion and the seat back and having gear teeth, a shaft member formed integrally with the base member and having a cylindrical shaft surface, a lock member having first and second opposite end surfaces and lock teeth formed in the second end surface, a cam member for moving the lock member to engage the lock teeth with the gear teeth and disengage the lock teeth from the gear teeth, first and second guide members formed integrally with the base member to guide the lock member along a path around the shaft member and a stress absorbing protrusion formed integrally with the shaft surface on an opposite side of the shaft member from the lock teeth.Type: GrantFiled: March 8, 2006Date of Patent: December 19, 2006Assignee: Fuji Kiko Co., Ltd.Inventor: Tetsuya Ohba
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Patent number: 7144082Abstract: A seat reclining apparatus for a vehicle including a base member and a rotational member having an internal gear. A lock tooth is provided having an external gear engageable with the internal gear. A shaft section is provided is provided having an outer peripheral side guide surface. A cam is provided for having an inner peripheral side guide surface. Each of a pair of guide sections biasing the lock tooth to engage the external gear with the internal gear. The lock tooth has an outer peripheral side slide surface and a contact face. One of the guide sections has a backup surface. The one of the guide sections has a step portion formed between the outer peripheral side guide surface and the backup surface. Further, the lock tooth has a protruding section contactable with the step portion.Type: GrantFiled: March 8, 2006Date of Patent: December 5, 2006Assignee: Fuji Kiko Co., Ltd.Inventor: Tetsuya Ohba
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Patent number: 7119756Abstract: A radar horn antenna in which, to reduce or remove unnecessary echo from a specific angular range such as ground clutter, divergence in axial direction of a horn antenna 8 accommodated in a casing and covered with a radome is asymmetrical with respect to the axis of the horn antenna so that a maximum radiation direction in a radiation pattern of the horn antenna is deviated from front to another and/or gain in the specific angular range is controlled.Type: GrantFiled: March 25, 2003Date of Patent: October 10, 2006Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Tetsuya Ohba
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Publication number: 20060202539Abstract: A seat reclining apparatus for a vehicle including a base member and a rotational member having an internal gear. A lock tooth is provided having an external gear engageable with the internal gear. A shaft section is provided having an inner peripheral side guide surface. Each of a pair of guide sections is provided having an outer peripheral side guide surface. A cam is provided for biasing the lock tooth to engage the external gear with the internal gear. The lock tooth has an outer peripheral side slide surface and a contact face. One of the guide sections has a backup surface. The one of the guide sections has a step portion formed between the outer peripheral side guide surface and the backup surface. Further, the lock tooth has a protruding section contactable with the step portion.Type: ApplicationFiled: March 8, 2006Publication date: September 14, 2006Inventor: Tetsuya Ohba
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Publication number: 20060202538Abstract: An automotive seat reclining device includes a base member coupled to one of a seat cushion and a seat back, a pivot member coupled to the other of the seat cushion and the seat back and having gear teeth, a shaft member formed integrally with the base member and having a cylindrical shaft surface, a lock member having first and second opposite end surfaces and lock teeth formed in the second end surface, a cam member for moving the lock member to engage the lock teeth with the gear teeth and disengage the lock teeth from the gear teeth, first and second guide members formed integrally with the base member to guide the lock member along a path around the shaft member and a stress absorbing protrusion formed integrally with the shaft surface on an opposite side of the shaft member from the lock teeth.Type: ApplicationFiled: March 8, 2006Publication date: September 14, 2006Inventor: Tetsuya Ohba
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Patent number: 6854802Abstract: The seat recliner includes a base (10) mounted to a first seat member. The seat recliner includes a gear (60) mounted to a second seat member and being rotatable relative to the base. The gear has first teeth (61) along a peripheral face of the gear. The seat recliner includes a locking member (20) movable inside of the first teeth. The locking member has second teeth (21) engageable with the first teeth. The seat recliner includes a cam (40) configured to rotate the locking member to engage the first and second teeth with each other for establishing an angle between the first and second seat members. The seat recliner includes a guide (11B) on the base and having a guide face (11b) for slidably guiding the locking member to engage the first and second teeth with each other. The guide extends radially from a vicinity of the first teeth to a vicinity of the cam. A near side of the guide relative to the first teeth and the locking member define a gap (G1) therebetween.Type: GrantFiled: September 26, 2003Date of Patent: February 15, 2005Assignee: Fujikiko Kabushiki KaishaInventors: Hiroshi Matsuura, Tetsuya Ohba
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Patent number: 6799507Abstract: A web printer has a buffer for adjusting the traveling position of the web under its slack status, a tension assigning unit for assigning fixed tension to the web delivered from the buffer, a device for detecting the traveling position of the web delivered from the tension assigning unit, a sew correction unit for adjusting the skew of the web according to the output from the detection device, and an image forming unit that forms images on the web.Type: GrantFiled: August 13, 2001Date of Patent: October 5, 2004Assignee: Hitachi Printing Solutions, Ltd.Inventors: Tetsuya Ohba, Akitomo Kuwabara
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Publication number: 20040066349Abstract: A radar horn antenna in which, to reduce or remove unnecessary echo from a specific angular range such as ground clutter, divergence in axial direction of a horn antenna 8 accommodated in a casing and covered with a radome is asymmetrical with respect to the axis of the horn antenna so that a maximum radiation direction in a radiation pattern of the horn antenna is deviated from front to another and/or gain in the specific angular range is controlled.Type: ApplicationFiled: March 25, 2003Publication date: April 8, 2004Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventor: Tetsuya Ohba
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Publication number: 20040066078Abstract: The seat recliner includes a base (10) mounted to a first seat member. The seat recliner includes a gear (60) mounted to a second seat member and being rotatable relative to the base. The gear has first teeth (61) along a peripheral face of the gear. The seat recliner includes a locking member (20) movable inside of the first teeth. The locking member has second teeth (21) engageable with the first teeth. The seat recliner includes a cam (40) configured to rotate the locking member to engage the first and second teeth with each other for establishing an angle between the first and second seat members. The seat recliner includes a guide (11B) on the base and having a guide face (11b) for slidably guiding the locking member to engage the first and second teeth with each other. The guide extends radially from a vicinity of the first teeth to a vicinity of the cam. A near side of the guide relative to the first teeth and the locking member define a gap (G1) therebetween.Type: ApplicationFiled: September 26, 2003Publication date: April 8, 2004Inventors: Hiroshi Matsuura, Tetsuya Ohba
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Patent number: 6701837Abstract: To stably transport an elongated web-like print paper so as not to move in the widthwise direction of the print paper, a first sensor is disposed at a first position in a paper conveying path and a second sensor at a second position downstream of the first position with respect to the paper conveying direction. Both the first and second sensors detect a position of a side edge or the print paper. A difference between the outputs from the first and second sensors is computed while taking a travel time of the edge detected by the first sensor to reach the second sensor into account. A main controller generates a drive signal based on the difference computed and controls a mechanism for moving the print paper in the widthwise direction in accordance with the drive signal.Type: GrantFiled: December 20, 2002Date of Patent: March 9, 2004Assignee: Hitachi Printing Solutions, Ltd.Inventors: Tetsuya Ohba, Shigeru Obata, Yasushi Kinoshita
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Patent number: 6666515Abstract: The seat recliner includes a first seat member. The seat recliner includes a second seat member rotatable relative to the first seat member. The seat recliner includes an input cam member for rotating relative to the first seat member. The seat recliner includes a pivot on the first seat member. The seat recliner includes a follower member for being actuated by the input cam member to lock the second seat member relative to the first seat member. The follower member includes a first side. The first side includes a tooth for meshing with the second seat member. The first side includes an engagement side pivotably engaging on the pivot. The follower member includes a second side in proximity to the engagement side. The seat recliner includes a pair of guides on the first seat member. Guides have the pivot interposed therebetween for cooperating with the pivot to pivotably support the follower member on the pivot. A guide has smaller rigidity than the pivot for retaining the second side.Type: GrantFiled: May 23, 2002Date of Patent: December 23, 2003Assignee: Fujikiko Kabushiki KaishaInventors: Yasushi Asano, Hiroshi Matsuura, Tetsuya Ohba
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Patent number: 6648414Abstract: A casing 10 includes second gears 20 having second locking cams 25 disposed in axial symmetry with a rotational axis of the casing 10, and guides 11A each having a slide-contacting face 11c, disposed in axial symmetry with a rotational axis of the casing 10 and on a straight line L4 perpendicular to a line L3 passing through the second locking cams 25. A cam 40 includes a plurality of first locking cams 41 for pressing the second locking cams 25, disposed in axial symmetry with a rotational axis of the cam 40, and guiding faces 45 disposed in axial symmetry with a rotational axis of the cam 40 and on a straight line L2 perpendicular to a line L1 passing through the first locking cams 41. A shaft 30 includes coupling portions 32, 34 for transmitting external torque and is press-fitted into the center hole 42 of cam 40 at a predetermined rotational angle.Type: GrantFiled: March 6, 2002Date of Patent: November 18, 2003Assignee: Fujikikio Kabushiki KaishaInventors: Isao Ikegaya, Tetsuya Ohba
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Patent number: 6629733Abstract: A frame has a pivot protruding therefrom. A first gear is rotatable relative to the frame. A cam is rotatable with the first gear. A second gear is between the pivot and the cam. The second gear is engaged with the cam for rotation. The second gear is to be rotated on the pivot, thus to be locked with the first gear. The pivot has smaller mechanical strength than the first gear and the second gear.Type: GrantFiled: June 29, 2001Date of Patent: October 7, 2003Assignee: Fujikiko Kabushiki KaishaInventors: Hiroshi Matsuura, Tetsuya Ohba, Yasushi Asano