Patents by Inventor Hiroyuki Asahara
Hiroyuki Asahara 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: 11959500Abstract: The present invention pertains to an air cylinder (10) in which flow rate controllers (24, 24A) are built into a head cover (14) and a rod cover (16), said flow rate controllers (24, 24A) being provided with a first flow rate adjustment part (28) connected between a port (14a, 16a) and a cylinder chamber (12c), a second flow rate adjustment part (32) provided adjacent to the first flow rate adjustment part (28), and a pilot check valve (38) connected in series to the second flow rate adjustment part (32). In response to the pressure of pilot air, the pilot check valve (38) switches between a state in which the passage of exhaust air from the cylinder chamber (12c) is permitted and a state in which the passage of exhaust air is prevented.Type: GrantFiled: August 3, 2020Date of Patent: April 16, 2024Assignee: SMC CORPORATIONInventors: Youji Takakuwa, Akihiro Kazama, Hiroyuki Asahara, Kengo Monden
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Patent number: 11946493Abstract: A flow rate controller and a drive device are provided with a first flow passage connected between an operation switching valve and an air cylinder, and that supplies air to and discharges air from a cylinder chamber of the air cylinder; a first flow rate adjustment part provided in the first flow passage; a second flow passage adjacent to the first flow passage; a pilot check valve provided at a point along the second flow passage; a second flow rate adjustment part connected in series to the pilot check valve at a point along the second flow passage; a pilot air flow passage, one end of which communicates with the operation switching valve and the other end of which is connected to a pilot port of the pilot check valve; and a third flow rate adjustment part provided in the pilot air flow passage.Type: GrantFiled: August 3, 2020Date of Patent: April 2, 2024Assignee: SMC CORPORATIONInventors: Youji Takakuwa, Akihiro Kazama, Hiroyuki Asahara, Kengo Monden
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Patent number: 11933328Abstract: In a cylinder drive device, a throttle valve and a second check valve are provided between a switch valve and a first cylinder chamber of a fluid pressure cylinder. The cylinder drive device has a flow channel unit which is interposed between a manifold and the switch valve, which allows communication between the throttle valve and the second check valve and switch valve, and which communicates with a plurality of holes in the manifold to allow a fluid to flow to the switch valve.Type: GrantFiled: October 10, 2019Date of Patent: March 19, 2024Assignee: SMC CORPORATIONInventors: Hiroyuki Asahara, Kazutaka Someya
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Patent number: 11846306Abstract: An air cylinder in which a flow rate controller is built in, has a head cover and a rod cover. A pilot air adjustment unit guides exhaust air to a switch valve of the flow rate controller as pilot air, and the switch valve is switched by an increase in the pressure of the pilot air.Type: GrantFiled: August 3, 2020Date of Patent: December 19, 2023Assignee: SMC CORPORATIONInventors: Youji Takakuwa, Akihiro Kazama, Hiroyuki Asahara, Kengo Monden
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Patent number: 11835070Abstract: A fluid pressure cylinder has a sensor attachment tool mounted thereon. A holder holds the position sensor in a rail structure extending in an axial direction of a cylinder tube and is secured by screwing to a rod cover or a head cover in an arm part provided to one end of the holder.Type: GrantFiled: June 8, 2020Date of Patent: December 5, 2023Assignee: SMC CORPORATIONInventors: Mitsuru Machijima, Hiroyuki Asahara, Aki Iwamoto, Shiori Iwatsuki
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Patent number: 11773879Abstract: In a flow rate controller and a drive device, a housing is provided therein with a first flow passage, a second flow passage adjacent to the first flow passage, a first throttle valve provided to the first flow passage, and a second throttle valve provided to the second flow passage. A pilot check valve is provided to the second flow passage and is connected in series to the second throttle valve. A pilot air flow passage communicates with a pilot port of the pilot check valve for supplying and discharging pilot air, and a third throttle valve is provided to the pilot air flow passage. In response to the pressure of the pilot air, the pilot check valve switches between a state in which the passage of exhaust air discharged from an air cylinder is permitted and a state in which passage of the exhaust air is prevented.Type: GrantFiled: August 3, 2020Date of Patent: October 3, 2023Assignee: SMC CORPORATIONInventors: Youji Takakuwa, Akihiro Kazama, Hiroyuki Asahara, Kengo Monden
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Patent number: 11519430Abstract: A main flow path that introduces high-pressure air to an air cylinder, or discharges exhaust air therefrom, includes a sub flow path provided alongside the main flow path; an exhaust flow rate adjustment unit that suppresses the operation speed of the air cylinder by adjusting the flow rate of the exhaust air flowing through the sub flow path; and a switching valve that is connected between the air cylinder, the main flow path and the sub flow path, and that connects the main flow path and the sub flow path to the air cylinder in a switching manner. The switching valve is constituted by a spool valve.Type: GrantFiled: October 30, 2019Date of Patent: December 6, 2022Assignee: SMC CORPORATIONInventors: Youji Takakuwa, Akihiro Kazama, Hiroyuki Asahara, Kengo Monden
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Publication number: 20220364580Abstract: A fluid pressure cylinder has a sensor attachment tool mounted thereon. A holder holds the position sensor in a rail structure extending in an axial direction of a cylinder tube and is secured by screwing to a rod cover or a head cover in an arm part provided to one end of the holder.Type: ApplicationFiled: June 8, 2020Publication date: November 17, 2022Applicant: SMC CORPORATIONInventors: Mitsuru MACHIJIMA, Hiroyuki ASAHARA, Aki IWAMOTO, Shiori IWATSUKI
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Publication number: 20220349426Abstract: The present invention pertains to an air cylinder (10) in which flow rate controllers (24, 24A) are built into a head cover (14) and a rod cover (16), said flow rate controllers (24, 24A) being provided with a first flow rate adjustment part (28) connected between a port (14a, 16a) and a cylinder chamber (12c), a second flow rate adjustment part (32) provided adjacent to the first flow rate adjustment part (28), and a pilot check valve (38) connected in series to the second flow rate adjustment part (32). In response to the pressure of pilot air, the pilot check valve (38) switches between a state in which the passage of exhaust air from the cylinder chamber (12c) is permitted and a state in which the passage of exhaust air is prevented.Type: ApplicationFiled: August 3, 2020Publication date: November 3, 2022Applicant: SMC CORPORATIONInventors: Youji TAKAKUWA, Akihiro KAZAMA, Hiroyuki ASAHARA, Kengo MONDEN
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Publication number: 20220333619Abstract: A flow rate controller and a drive device are provided with a first flow passage connected between an operation switching valve and an air cylinder, and that supplies air to and discharges air from a cylinder chamber of the air cylinder; a first flow rate adjustment part provided in the first flow passage; a second flow passage adjacent to the first flow passage; a pilot check valve provided at a point along the second flow passage; a second flow rate adjustment part connected in series to the pilot check valve at a point along the second flow passage; a pilot air flow passage, one end of which communicates with the operation switching valve and the other end of which is connected to a pilot port of the pilot check valve; and a third flow rate adjustment part provided in the pilot air flow passage.Type: ApplicationFiled: August 3, 2020Publication date: October 20, 2022Applicant: SMC CORPORATIONInventors: Youji TAKAKUWA, Akihiro KAZAMA, Hiroyuki ASAHARA, Kengo MONDEN
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Publication number: 20220333622Abstract: An air cylinder in which a flow rate controller is built in, has a head cover and a rod cover. A pilot air adjustment unit guides exhaust air to a switch valve of the flow rate controller as pilot air, and the switch valve is switched by an increase in the pressure of the pilot air.Type: ApplicationFiled: August 3, 2020Publication date: October 20, 2022Applicant: SMC CORPORATIONInventors: Youji TAKAKUWA, Akihiro KAZAMA, Hiroyuki ASAHARA, Kengo MONDEN
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Publication number: 20220325728Abstract: A flow rate controller and a drive device are provided with a cylinder flow passage connected to an air cylinder; a main flow passage for supplying air to and discharging air from the air cylinder; an auxiliary flow passage that has a first throttle valve and through which exhaust air discharged from the air cylinder passes with a smaller flow rate than that of the main flow passage; a switch valve that switches between a first position in which the cylinder flow passage communicates with the main flow passage and a second position in which the cylinder flow passage communicates with the auxiliary flow passage; and a pilot air adjustment part that guides a portion of the exhaust air from the air cylinder as pilot air to the switch valve.Type: ApplicationFiled: August 3, 2020Publication date: October 13, 2022Applicant: SMC CORPORATIONInventors: Youji TAKAKUWA, Akihiro KAZAMA, Hiroyuki ASAHARA, Kengo MONDEN
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Publication number: 20220316501Abstract: In a flow rate controller and a drive device, a housing is provided therein with a first flow passage, a second flow passage adjacent to the first flow passage, a first throttle valve provided to the first flow passage, and a second throttle valve provided to the second flow passage. A pilot check valve is provided to the second flow passage and is connected in series to the second throttle valve. A pilot air flow passage communicates with a pilot port of the pilot check valve for supplying and discharging pilot air, and a third throttle valve is provided to the pilot air flow passage. In response to the pressure of the pilot air, the pilot check valve switches between a state in which the passage of exhaust air discharged from an air cylinder is permitted and a state in which passage of the exhaust air is prevented.Type: ApplicationFiled: August 3, 2020Publication date: October 6, 2022Applicant: SMC CORPORATIONInventors: Youji TAKAKUWA, Akihiro KAZAMA, Hiroyuki ASAHARA, Kengo MONDEN
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Patent number: 11261885Abstract: A fluid pressure cylinder includes a first cylinder portion and a second cylinder portion disposed in parallel, and a supply-and-discharge port. The first cylinder portion is partitioned by a first piston into a head-side first accumulation chamber and a rod-side second accumulation chamber. The second cylinder portion is partitioned by a second piston into a head-side release chamber and a rod-side drive chamber. Pressurized fluid is supplied to and discharged from the second accumulation chamber and the drive chamber through the supply-and-discharge port. An end of a first piston rod connected to the first piston and an end of a second piston rod connected to the second piston are connected to each other. The first piston includes a communication switching valve switching communication between the first accumulation chamber and the second accumulation chamber, between enabled and disabled.Type: GrantFiled: April 12, 2021Date of Patent: March 1, 2022Assignee: SMC CORPORATIONInventors: Youji Takakuwa, Hiroyuki Asahara, Seiichi Nagura
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Publication number: 20220018341Abstract: In a cylinder drive device, a throttle valve and a second check valve are provided between a switch valve and a first cylinder chamber of a fluid pressure cylinder. The cylinder drive device has a flow channel unit which is interposed between a manifold and the switch valve, which allows communication between the throttle valve and the second check valve and switch valve, and which communicates with a plurality of holes in the manifold to allow a fluid to flow to the switch valve.Type: ApplicationFiled: October 10, 2019Publication date: January 20, 2022Applicant: SMC CORPORATIONInventors: Hiroyuki ASAHARA, Kazutaka SOMEYA
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Publication number: 20210404486Abstract: A main flow path that introduces high-pressure air to an air cylinder, or discharges exhaust air therefrom, includes a sub flow path provided alongside the main flow path; an exhaust flow rate adjustment unit that suppresses the operation speed of the air cylinder by adjusting the flow rate of the exhaust air flowing through the sub flow path; and a switching valve that is connected between the air cylinder, the main flow path and the sub flow path, and that connects the main flow path and the sub flow path to the air cylinder in a switching manner. The switching valve is constituted by a spool valve.Type: ApplicationFiled: October 30, 2019Publication date: December 30, 2021Applicant: SMC CORPORATIONInventors: Youji TAKAKUWA, Akihiro KAZAMA, Hiroyuki ASAHARA, Kengo MONDEN
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Patent number: 11181127Abstract: The present invention allows the number of components to be reduced and assembly work to be easily performed. A cylinder drive manifold device that constitutes a cylinder drive apparatus is provided with a block-shaped manifold in which a plurality of holes are formed for circulating a fluid used for driving a plurality of fluid pressure cylinders. The manifold is configured such that a plurality of switching valves for supplying a fluid alternately to a first cylinder chamber and a second cylinder chamber of each of the fluid pressure cylinders are attachable. A plurality of check valves and a plurality of throttle valves are incorporated into the plurality of holes of the manifold.Type: GrantFiled: April 2, 2018Date of Patent: November 23, 2021Assignee: SMC CORPORATIONInventors: Hiroyuki Asahara, Kazutaka Someya
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Publication number: 20210317850Abstract: A fluid pressure cylinder includes a first cylinder portion and a second cylinder portion disposed in parallel, and a supply-and-discharge port. The first cylinder portion is partitioned by a first piston into a head-side first accumulation chamber and a rod-side second accumulation chamber. The second cylinder portion is partitioned by a second piston into a head-side release chamber and a rod-side drive chamber. Pressurized fluid is supplied to and discharged from the second accumulation chamber and the drive chamber through the supply-and-discharge port. An end of a first piston rod connected to the first piston and an end of a second piston rod connected to the second piston are connected to each other. The first piston includes a communication switching valve switching communication between the first accumulation chamber and the second accumulation chamber, between enabled and disabled.Type: ApplicationFiled: April 12, 2021Publication date: October 14, 2021Applicant: SMC CORPORATIONInventors: Youji TAKAKUWA, Hiroyuki ASAHARA, Seiichi NAGURA
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Patent number: D948579Type: GrantFiled: January 27, 2021Date of Patent: April 12, 2022Assignee: SMC CORPORATIONInventor: Hiroyuki Asahara
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Patent number: D951999Type: GrantFiled: January 28, 2021Date of Patent: May 17, 2022Assignee: SMC CORPORATIONInventor: Hiroyuki Asahara