Patents by Inventor Eiko Miyasato
Eiko Miyasato 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: 10927860Abstract: A fluidic cylinder has a cylinder tube having a cylinder chamber defined in an interior thereof has a pair of cover members attached to respective ends of the cylinder tube. A piston is disposed displaceably along the cylinder chamber, and a piston rod is connected to the piston. The piston and the cylinder tube are formed with rectangular shapes in cross section, the piston includes a wear ring which is in sliding contact with an inner wall surface of the cylinder tube, and a magnet is incorporated in the wear ring. At least one of the cover members includes bolt holes therein, the bolt holes extending in at least two or more directions including a direction in which the piston is displaced, and fastening bolts are selectively inserted into the bolt holes to fix the at least one of the cover members with respect to another member.Type: GrantFiled: December 27, 2016Date of Patent: February 23, 2021Assignee: SMC CORPORATIONInventors: Masayuki Kudo, Shinichiro Nemoto, Masahiko Kawakami, Yuu Mizutani, Eiko Miyasato, Ken Tamura
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Patent number: 10570934Abstract: The present invention relates to a fluidic cylinder. This fluidic cylinder is configured in such a manner that a piston unit is received in an axially displaceable manner within a cylinder tube formed in a rectangular cross-sectional shape. The piston unit has: a base body having the front end of a piston rod staked thereto; a wear ring having the base body received therein and having a magnet incorporated therein; and piston packing adjacent to the wear ring. The piston unit is integrally held at one end of the piston rod. The wear ring and the piston packing are formed in a rectangular cross-sectional shape corresponding to the rectangular cross-sectional shape of the cylinder tube and are provided rotatable relative to the piston rod.Type: GrantFiled: September 10, 2015Date of Patent: February 25, 2020Assignee: SMC CORPORATIONInventors: Masayuki Kudo, Yasunaga Suzuki, Shinichiro Nemoto, Jun Yamada, Eiko Miyasato, Yuu Mizutani, Ken Tamura, Masahiko Kawakami
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Publication number: 20190195248Abstract: A fluidic cylinder has a cylinder tube having a cylinder chamber defined in an interior thereof has a pair of cover members attached to respective ends of the cylinder tube. A piston is disposed displaceably along the cylinder chamber, and a piston rod is connected to the piston. The piston and the cylinder tube are formed with rectangular shapes in cross section, the piston includes a wear ring which is in sliding contact with an inner wall surface of the cylinder tube, and a magnet is incorporated in the wear ring. At least one of the cover members includes bolt holes therein, the bolt holes extending in at least two or more directions including a direction in which the piston is displaced, and fastening bolts are selectively inserted into the bolt holes to fix the at least one of the cover members with respect to another member.Type: ApplicationFiled: December 27, 2016Publication date: June 27, 2019Applicant: SMC CORPORATIONInventors: Masayuki KUDO, Shinichiro NEMOTO, Masahiro KAWAKAMI, Yuu MIZUTANI, Eiko MIYASATO, Ken TAMURA
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Patent number: 10253791Abstract: A communication path that communicates with a first main pressure chamber is provided in a main piston and a piston rod. A check valve, which opens by being pressed by a booster piston and allows the communication path to communicate with a first sub-pressure chamber when the piston rod reaches a booster start position before a forward stroke end, is disposed in an end portion of the communication path. A plurality of steel balls are disposed in a coupling-member containing chamber formed in the booster piston. An engagement surface and an engagement groove, which engage with the steel balls when the booster piston moves forward due to an action of a pressure fluid supplied to the first sub-pressure chamber 11a through the communication path, are formed in the coupling-member containing chamber and an outer peripheral surface of the piston rod.Type: GrantFiled: July 17, 2017Date of Patent: April 9, 2019Assignee: SMC CORPORATIONInventors: Masayuki Kudo, Yuichi Tanabe, Eiko Miyasato
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Patent number: 9909639Abstract: A shock absorber includes a cylinder housing including a piston chamber in which oily liquid is disposed, a piston movable in the piston chamber, a rod connected to the piston and protruding out from the cylinder housing, and a return mechanism for the rod. In the shock absorber, a cylindrical bearing made of a synthetic resin having a shock-absorbing property, a dust collecting member for avoiding entry of dust particles, and a lubricating member for supplying a lubricating oil to a surface of the rod are disposed in a rod guiding hole in the cylinder housing. A leading end of the bearing protrudes outside with respect to an outer end surface of the cylinder housing and acts as a contact portion that allows a moving object to come into contact therewith, and thus the bearing functions to guide the rod and also functions as a stopper for avoiding the moving object from coming into contact with the outer end surface of the cylinder housing.Type: GrantFiled: March 20, 2014Date of Patent: March 6, 2018Assignee: SMC CORPORATIONInventors: Eiko Miyasato, Tsuyoshi Mita, Kodai Yoshinaga, Youji Takakuwa, Junya Kaneko
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Publication number: 20180031011Abstract: A communication path that communicates with a first main pressure chamber is provided in a main piston and a piston rod. A check valve, which opens by being pressed by a booster piston and allows the communication path to communicate with a first sub-pressure chamber when the piston rod reaches a booster start position before a forward stroke end, is disposed in an end portion of the communication path. A plurality of steel balls are disposed in a coupling-member containing chamber formed in the booster piston. An engagement surface and an engagement groove, which engage with the steel balls when the booster piston moves forward due to an action of a pressure fluid supplied to the first sub-pressure chamber 11a through the communication path, are formed in the coupling-member containing chamber and an outer peripheral surface of the piston rod.Type: ApplicationFiled: July 17, 2017Publication date: February 1, 2018Applicant: SMC CORPORATIONInventors: Masayuki KUDO, Yuichi TANABE, Eiko MIYASATO
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Publication number: 20170298931Abstract: The present invention relates to a fluidic cylinder. This fluidic cylinder is configured in such a manner that a piston unit is received in an axially displaceable manner within a cylinder tube formed in a rectangular cross-sectional shape. The piston unit has: a base body having the front end of a piston rod staked thereto; a wear ring having the base body received therein and having a magnet incorporated therein; and piston packing adjacent to the wear ring. The piston unit is integrally held at one end of the piston rod. The wear ring and the piston packing are formed in a rectangular cross-sectional shape corresponding to the rectangular cross-sectional shape of the cylinder tube and are provided rotatable relative to the piston rod.Type: ApplicationFiled: September 10, 2015Publication date: October 19, 2017Applicant: SMC CORPORATIONInventors: Masayuki KUDO, Yasunaga SUZAKI, Shinichiro NEMOTO, Jun YAMADA, Eiko MIYASATO, Yuu MIZUTANI, Ken TAMURA, Masahiko KAWAKAMI
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Patent number: 9677639Abstract: A bidirectional shock absorber includes a cylinder housing including a liquid chamber, a shock-absorbing mechanism located inside the liquid chamber and supported by a rod sticking out of the cylinder housing. The shock-absorbing mechanism includes a pair of pistons located in the liquid chamber and attached to the rod on the respective sides of a liquid storage chamber constituting an accumulator, resistance paths formed between an outer circumferential surface of the pistons and an inner circumferential surface of a piston chamber, to apply flow resistance to the liquid, and unidirectional flow paths formed along the respective pistons and configured to block the liquid flow toward the liquid storage chamber when the corresponding piston is pressed toward the piston chamber, but to permit the liquid to flow in the opposite direction.Type: GrantFiled: May 29, 2013Date of Patent: June 13, 2017Assignee: SMC CORPORATIONInventors: Eiko Miyasato, Youji Takakuwa, Kodai Yoshinaga, Tsuyoshi Mita, Kouichi Matsuzaki, Toshio Minakuchi, Kazuhiro Iida, Junya Kaneko
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Publication number: 20160369863Abstract: A shock absorber includes a cylinder housing including a piston chamber in which oily liquid is disposed, a piston movable in the piston chamber, a rod connected to the piston and protruding out from the cylinder housing, and a return mechanism for the rod. In the shock absorber, a cylindrical bearing made of a synthetic resin having a shock-absorbing property, a dust collecting member for avoiding entry of dust particles, and a lubricating member for supplying a lubricating oil to a surface of the rod are disposed in a rod guiding hole in the cylinder housing. A leading end of the bearing protrudes outside with respect to an outer end surface of the cylinder housing and acts as a contact portion that allows a moving object to come into contact therewith, and thus the bearing functions to guide the rod and also functions as a stopper for avoiding the moving object from coming into contact with the outer end surface of the cylinder housing.Type: ApplicationFiled: March 20, 2014Publication date: December 22, 2016Applicant: SMC CORPORATIONInventors: Eiko MIYASATO, Tsuyoshi MITA, Kodai YOSHINAGA, Youji TAKAKUWA, Junya KANEKO
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Patent number: 9366306Abstract: A double-rod type shock absorber includes a rod, first and second pistons held by the rod, first and second piston chambers disposed on an outer side of the first and second pistons, a liquid storage chamber between the first piston and the second piston, a flow path gap formed between an outer peripheral surface of the first and second pistons and an inner peripheral surface of the liquid chamber, and first and second unidirectional flow paths which connect the first and second piston chambers with the liquid storage chamber, wherein, during reciprocating motion of the rod, the unidirectional flow path located on a front side in a movement direction of the rod is closed, and the unidirectional flow path located on a back side in the movement direction of the rod is opened.Type: GrantFiled: May 29, 2013Date of Patent: June 14, 2016Assignee: SMC CORPORATIONInventors: Eiko Miyasato, Youji Takakuwa, Akira Hiroki, Kouichi Matsuzaki, Toshio Minakuchi, Kodai Yoshinaga, Tsuyoshi Mita, Mariko Kessoku
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Publication number: 20150198212Abstract: A double-rod type shock absorber includes a rod, first and second pistons held by the rod, first and second piston chambers disposed on an outer side of the first and second pistons, a liquid storage chamber between the first piston and the second piston, a flow path gap formed between an outer peripheral surface of the first and second pistons and an inner peripheral surface of the liquid chamber, and first and second unidirectional flow paths which connect the first and second piston chambers with the liquid storage chamber, wherein, during reciprocating motion of the rod, the unidirectional flow path located on a front side in a movement direction of the rod is closed, and the unidirectional flow path located on a back side in the movement direction of the rod is opened.Type: ApplicationFiled: May 29, 2013Publication date: July 16, 2015Applicant: SMC CORPORATIONInventors: Eiko Miyasato, Youji Takakuwa, Akira Hiroki, Kouichi Matsuzaki, Toshio Minakuchi, Kodai Yoshinaga, Tsuyoshi Mita, Mariko Kessoku
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Patent number: D754035Type: GrantFiled: April 24, 2014Date of Patent: April 19, 2016Assignee: SMC CORPORATIONInventors: Eiko Miyasato, Tsuyoshi Mita
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Patent number: D757120Type: GrantFiled: October 2, 2014Date of Patent: May 24, 2016Assignee: SMC CORPORATIONInventors: Masayuki Kudo, Eiko Miyasato, Yuu Mizutani
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Patent number: D772302Type: GrantFiled: March 4, 2016Date of Patent: November 22, 2016Assignee: SMC CORPORATIONInventors: Masayuki Kudo, Eiko Miyasato, Yuu Mizutani
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Patent number: D780228Type: GrantFiled: March 4, 2016Date of Patent: February 28, 2017Assignee: SMC CORPORATIONInventors: Masayuki Kudo, Eiko Miyasato, Yuu Mizutani
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Patent number: D780229Type: GrantFiled: March 4, 2016Date of Patent: February 28, 2017Assignee: SMC CORPORATIONInventors: Masayuki Kudo, Eiko Miyasato, Yuu Mizutani
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Patent number: D805559Type: GrantFiled: September 16, 2016Date of Patent: December 19, 2017Assignee: SMC CORPORATIONInventors: Masayuki Kudo, Shinichiro Nemoto, Yuu Mizutani, Eiko Miyasato, Masahiko Kawakami, Ken Tamura
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Patent number: D805560Type: GrantFiled: September 16, 2016Date of Patent: December 19, 2017Assignee: SMC CORPORATIONInventors: Masayuki Kudo, Shinichiro Nemoto, Yuu Mizutani, Eiko Miyasato, Masahiko Kawakami, Ken Tamura
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Patent number: D819700Type: GrantFiled: March 13, 2017Date of Patent: June 5, 2018Assignee: SMC CORPORATIONInventors: Masayuki Kudo, Masahiko Kawakami, Yuu Mizutani, Shinichiro Nemoto, Eiko Miyasato
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Patent number: D820321Type: GrantFiled: March 13, 2017Date of Patent: June 12, 2018Assignee: SMC CORPORATIONInventors: Masayuki Kudo, Masahiko Kawakami, Yuu Mizutani, Shinichiro Nemoto, Eiko Miyasato