Patents by Inventor Kenjiro Murakami
Kenjiro Murakami 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: 8931817Abstract: An aspect of the invention provides a robot hand that performs an action for gripping an object between plural finger sections provided to be capable of changing a distance between the finger sections. Between the plural finger sections, a palm section movable along a direction in which a base side of the plural finger sections and a distal end side of the plural finger sections are connected is provided.Type: GrantFiled: March 5, 2013Date of Patent: January 13, 2015Assignee: Seiko Epson CorporationInventors: Kenjiro Murakami, Kazuto Yoshimura
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Patent number: 8899648Abstract: An aspect of the invention provides a robot hand that performs an action for gripping an object between plural finger sections provided to be capable of changing a distance between the finger sections. Between the plural finger sections, a palm section movable along a direction in which a base side of the plural finger sections and a distal end side of the plural finger sections are connected is provided.Type: GrantFiled: March 5, 2013Date of Patent: December 2, 2014Assignee: Seiko Epson CorporationInventors: Kenjiro Murakami, Kazuto Yoshimura
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Patent number: 8897918Abstract: A robot hand has a plurality of fingers including a contact sensing finger that senses contact with an object. A base provided with the fingers detects a resultant reaction force that is the combination of reaction forces from the fingers. When no resultant reaction force is detected, the plurality of fingers are moved toward the object, and when the contact sensing finger comes into contact with the object, a force that drives the fingers is switched to a force corresponding to a grasp force. When the contact sensing finger has not come into contact with the object but a resultant reaction force is detected, the driving of the fingers is terminated and the position of the base is corrected by moving the base in a direction in which the resultant reaction force having acted thereon is not detected any more.Type: GrantFiled: May 9, 2012Date of Patent: November 25, 2014Assignee: Seiko Epson CorporationInventors: Yoshinobu Goto, Kenjiro Murakami, Kazuto Yoshimura
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Publication number: 20140239655Abstract: A robot hand that changes a space between finger members provided apart from each other includes: moving members on which the finger members are vertically provided; a palm member including a moving mechanism for moving the moving members in a predetermined axial direction; and guide members that guide the movement of the moving members in the predetermined axial direction.Type: ApplicationFiled: May 5, 2014Publication date: August 28, 2014Applicant: Seiko Epson CorporationInventors: Kenjiro MURAKAMI, Daisuke KIRIHARA
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Patent number: 8794685Abstract: A robot hand includes a palm section provided between a plurality of finger sections. The palm section may be brought into contact with an object while the object is gripped by the finger sections. The robot hand also includes a contact member that is detachably mounted on the palm section. The contact member may be brought into contact with the object instead of the palm section. Accordingly, even if an object is too small to be contacted by the palm section, it is possible to stably grip the small object since the contact member can be brought into contact with the object gripped by the finger sections instead of the palm section.Type: GrantFiled: May 10, 2012Date of Patent: August 5, 2014Assignee: Seiko Epson CorporationInventors: Kenjiro Murakami, Kazuto Yoshimura, Yoshinobu Goto
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Publication number: 20140175817Abstract: An aspect of the invention provides a robot hand that performs an action for gripping an object between plural finger sections provided to be capable of changing a distance between the finger sections. Between the plural finger sections, a palm section movable along a direction in which a base side of the plural finger sections and a distal end side of the plural finger sections are connected is provided.Type: ApplicationFiled: March 3, 2014Publication date: June 26, 2014Applicant: Seiko Epson CorporationInventors: Kenjiro MURAKAMI, Kazuto YOSHIMURA
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Patent number: 8752874Abstract: A robot hand that changes a space between finger members provided apart from each other includes: moving members on which the finger members are vertically provided; a palm member including a moving mechanism for moving the moving members in a predetermined axial direction; and guide members that guide the movement of the moving members in the predetermined axial direction.Type: GrantFiled: January 11, 2012Date of Patent: June 17, 2014Assignee: Seiko Epson CorporationInventors: Kenjiro Murakami, Daisuke Kirihara
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Publication number: 20140138970Abstract: Four fingers forming a first finger pair and a second finger pair are driven in such a way that the four fingers move closer to or away from an object simultaneously at the same speed to grip the object. This eliminates the need to drive the fingers independently, which makes it possible to simplify the structure and control of the robot hand. Moreover, one of the two fingers forming the second finger pair is a deformable finger. Therefore, even when the second finger pair grasps the object before the first finger pair grasps the object, the deformable finger is deformed, and eventually it is possible to grasp the object with the four fingers. This allows the robot hand to grip various objects even though the robot hand has a simple structure and is controlled with ease.Type: ApplicationFiled: January 28, 2014Publication date: May 22, 2014Applicant: Seiko Epson CorporationInventors: Kenjiro MURAKAMI, Kazuto YOSHIMURA, Yoshinobu GOTO
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Patent number: 8408619Abstract: An aspect of the invention provides a robot hand that performs an action for gripping an object between plural finger sections provided to be capable of changing a distance between the finger sections. Between the plural finger sections, a palm section movable along a direction in which a base side of the plural finger sections and a distal end side of the plural finger sections are connected is provided.Type: GrantFiled: January 3, 2012Date of Patent: April 2, 2013Assignee: Seiko Epson CorporationInventors: Kenjiro Murakami, Kazuto Yoshimura
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Publication number: 20120286535Abstract: A robot hand includes a palm section provided between a plurality of finger sections. The palm section may be brought into contact with an object while the object is gripped by the finger sections. The robot hand also includes a contact member that is detachably mounted on the palm section. The contact member may be brought into contact with the object instead of the palm section. Accordingly, even if an object is too small to be contacted by the palm section, it is possible to stably grip the small object since the contact member can be brought into contact with the object gripped by the finger sections instead of the palm section.Type: ApplicationFiled: May 10, 2012Publication date: November 15, 2012Applicant: SEIKO EPSON CORPORATIONInventors: Kenjiro MURAKAMI, Kazuto YOSHIMURA, Yoshinobu GOTO
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Publication number: 20120286536Abstract: Four fingers forming a first finger pair and a second finger pair are driven in such a way that the four fingers move closer to or away from an object simultaneously at the same speed to grip the object. This eliminates the need to drive the fingers independently, which makes it possible to simplify the structure and control of the robot hand. Moreover, one of the two fingers forming the second finger pair is a deformable finger. Therefore, even when the second finger pair grasps the object before the first finger pair grasps the object, the deformable finger is deformed, and eventually it is possible to grasp the object with the four fingers. This allows the robot hand to grip various objects even though the robot hand has a simple structure and is controlled with ease.Type: ApplicationFiled: May 11, 2012Publication date: November 15, 2012Applicant: SEIKO EPSON CORPORATIONInventors: Kenjiro MURAKAMI, Kazuto YOSHIMURA, Yoshinobu GOTO
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Publication number: 20120290133Abstract: A robot hand has a plurality of fingers including a contact sensing finger that senses contact with an object. A base provided with the fingers detects a resultant reaction force that is the combination of reaction forces from the fingers. When no resultant reaction force is detected, the plurality of fingers are moved toward the object, and when the contact sensing finger comes into contact with the object, a force that drives the fingers is switched to a force corresponding to a grasp force. When the contact sensing finger has not come into contact with the object but a resultant reaction force is detected, the driving of the fingers is terminated and the position of the base is corrected by moving the base in a direction in which the resultant reaction force having acted thereon is not detected any more.Type: ApplicationFiled: May 9, 2012Publication date: November 15, 2012Applicant: SEIKO EPSON CORPORATIONInventors: Yoshinobu GOTO, Kenjiro MURAKAMI, Kazuto YOSHIMURA
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Publication number: 20120175904Abstract: An aspect of the invention provides a robot hand that performs an action for gripping an object between plural finger sections provided to be capable of changing a distance between the finger sections. Between the plural finger sections, a palm section movable along a direction in which a base side of the plural finger sections and a distal end side of the plural finger sections are connected is provided.Type: ApplicationFiled: January 3, 2012Publication date: July 12, 2012Applicant: SEIKO EPSON CORPORATIONInventors: Kenjiro MURAKAMI, Kazuto YOSHIMURA
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Publication number: 20120175903Abstract: A robot hand that changes a space between finger members provided apart from each other includes: moving members on which the finger members are vertically provided; a palm member including a moving mechanism for moving the moving members in a predetermined axial direction; and guide members that guide the movement of the moving members in the predetermined axial direction.Type: ApplicationFiled: January 11, 2012Publication date: July 12, 2012Applicant: SEIKO EPSON CORPORATIONInventors: Kenjiro MURAKAMI, Daisuke KIRIHARA
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Patent number: 6336758Abstract: A printer wherein a drive roller of a pair of sheet discharge rollers is made of rubber and a driven roller of the pair of sheet discharge rollers is made of synthetic resin; the leading end of a sheet is guided so as to be abutted against the drive roller earlier than the driven roller; the sheet that is in the course of being discharged is guided by a sheet discharge tray so as to come in slidable contact with an edge portion that is on a print head side of a sheet discharge opening. As a result, the printer can provide satisfactory printing conditions quickly with a simple structure and reduce noise leaking from the sheet discharge opening.Type: GrantFiled: January 19, 1999Date of Patent: January 8, 2002Assignee: Seiko Epson CorporationInventors: Hiroshi Ishida, Shigeki Mizuno, Kenjiro Murakami, Toshikazu Kotaka, Tatsumi Tsuboki, Motoyuki Niimura, Norio Horaguchi, Yoshiaki Nakayama
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Patent number: 6322191Abstract: A printing apparatus arranged to perform printing while a monochrome printing head and a color printing head are moved in a direction in which the two heads are moved, the printing apparatus being arranged to print a plurality of patterns in which the relative quantity of deviation of printing timings of the two heads is changed in a stepped manner to cause a user to select a pattern having the smallest quantity of deviation among the plural patterns. Then, the selected pattern is used as a central value when a plurality of patterns in which the relative quantity of deviation of the printing timings of the two heads is changed in a stepped manner are furthermore printed to cause the user to select a pattern having a smallest quantity of deviation from the plural patterns. The above-mentioned process is repeated as necessary. As a result, the operation which is performed by the user to adjust the printing position can simply and easily be performed.Type: GrantFiled: April 24, 1998Date of Patent: November 27, 2001Assignee: Seiko Epson CorporationInventors: Tatsuya Seshimo, Hitoshi Igarashi, Yukihiro Uchiyama, Kenjiro Murakami
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Patent number: 5913626Abstract: A printer wherein a drive roller of a pair of sheet discharge rollers is made of rubber and a driven roller of the pair of sheet discharge rollers is made of synthetic resin; the leading end of a sheet is guided so as to be abutted against the drive roller earlier than the driven roller; the sheet that is in the course of being discharged is guided by a sheet discharge tray so as to come in slidable contact with an edge portion that is on a print head side of a sheet discharge opening. As a result, the printer can provide satisfactory printing conditions quickly with a simple structure and reduce noise leaking from the sheet discharge opening.Type: GrantFiled: February 13, 1996Date of Patent: June 22, 1999Assignee: Seiko Epson CorporationInventors: Hiroshi Ishida, Shigeki Mizuno, Kenjiro Murakami, Toshikazu Kotaka, Tatsumi Tsuboki, Motoyuki Niimura, Norio Horaguchi, Yoshiaki Nakayama
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Patent number: 5874970Abstract: The present invention provides a serial printer and a printing method using the serial printer. In the serial printer, assuming that the number of driven nozzles arranged in a secondary scanning direction on a print head is n and a nozzle pitch is a k-dot pitch, k is set to an integer which is no greater than n and has no prime factors greater than one in common with n. Further, secondary scanning is performed at least once at each of the start of printing and the termination of printing using a paper feeding distance of an m-dot pitch. On the other hand, secondary scanning other than the at least once secondary scanning is performed using an interlaced printing paper feeding distance of an n-dot pitch. In this case, m is an integer which is less than n and has no prime factors greater than one in common with k. Preferably, m=k.+-.j, wherein j is an integer no less than 1 and less than n.Type: GrantFiled: June 28, 1996Date of Patent: February 23, 1999Assignee: Seiko Epson CorporationInventors: Kazuo Saito, Kenjiro Murakami
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Patent number: 5524994Abstract: A paper skew removal apparatus including a single paper feed roller for feeding a paper in a state that the paper feed roller is in contact with the central part of the paper as viewed in the paper width direction, and a paper feed roller and gate roller for contacting the leading edge of the paper, the portions of the rollers that contact the leading edge of the paper are disposed in a direction orthogonal to the advancing direction of the paper fed by the paper feed roller. A printer is also disclosed which incorporates the disclosed paper skew removal apparatus. The inventive and unique construction provides reduction of paper feed time and size reduction in the overall printer, as well as ensuring a reliable skew removal from the paper.Type: GrantFiled: October 7, 1993Date of Patent: June 11, 1996Assignee: Seiko Epson CorporationInventors: Seiichi Hirano, Kenjiro Murakami, Hiroshi Ishida, Kenichi Miyazaki, Satoshi Fujioka
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Patent number: 5494364Abstract: A printer which is compact, can accurately supply paper and has reduced noise characteristics. Additionally, the printer enables easy correction of paper jams and can be selectively operated in various modes according to the user's preference. The printer includes a paper feed roller which is pivotable between a paper feed position and a non-feeding position, a drive force transmitting mechanism for transmitting a drive force to the paper feed roller, a carriage reciprocatively movable along the width of the paper fed by the paper feed roller, and an intermediate transmission mechanism attached to the side of the carriage. Only when the carriage is in a stand-by position, the intermediate transmission mechanism couples with the drive force transmitting mechanism to transmit to the paper feed roller a paper-feed directional rotating force so as to rotate the paper feed roller to the paper feed position.Type: GrantFiled: December 12, 1994Date of Patent: February 27, 1996Assignee: Seiko Epson CorporationInventors: Kenjiro Murakami, Toshikazu Kotaka, Hiroshi Ishida, Kiyoto Komura, Yoshiaki Nakayama, Nobuhito Takahashi, Satoshi Takehana