Patents by Inventor Tadashi Nishikawa
Tadashi Nishikawa 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: 11969107Abstract: Nursery equipment includes: a body (car seat body); an extended portion (ISOFIX) extended from the car seat body; and an adjustment mechanism for adjusting the position or shape of the ISOFIX. The adjustment mechanism includes a string having one end connected to the car seat body and the other end held by the ISOFIX, a reel that is rotatable in both forward and reverse directions and that changes the position or shape of the ISOFIX by winding up and feeding out the string, and a rotation lock mechanism that prohibits rotation of the reel.Type: GrantFiled: April 25, 2022Date of Patent: April 30, 2024Assignee: GRACO CHILDREN'S PRODUCTS, INC.Inventors: Yuji Shibata, Tadashi Nishikawa
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Publication number: 20240121962Abstract: According to one embodiment, a semiconductor device includes a stacked film with first insulating films and electrode layers alternately stacked in a first direction. The device further includes a columnar portion extending in the first direction and provided in a first region of the stacked film. The columnar portion forms memory cells at its intersections with the electrode layers. The device further includes a support column portion provided in a second region and extending in the first direction. A conductive plug is provided on a first electrode layer among the electrode layers in the second region. A first side surface of the support column portion faces a second side surface of the plug and the second side surface is concave in a direction toward the first side surface.Type: ApplicationFiled: September 5, 2023Publication date: April 11, 2024Inventors: Satoshi NAGASHIMA, Shota KASHIYAMA, Tadashi IGUCHI, Takuya NISHIKAWA
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Patent number: 11950746Abstract: A cleaning system includes: a cleaning vehicle 1 that travels along a predetermined travel path R to clean the travel path; and a maintenance facility 2 provided at a maintenance stop position A set on the travel path R, wherein the cleaning vehicle 1 includes a suction portion 14 that sucks up dust on the travel path R, a storage portion that stores the sucked up dust, and a discharge portion 16 that discharges the dust stored in the storage portion to the outside, and the maintenance facility 2 includes a dust collection portion 214 that collects the dust discharged to the outside from the storage portion via the discharge portion 16 of the cleaning vehicle 1 stopped at the maintenance stop position A.Type: GrantFiled: July 2, 2021Date of Patent: April 9, 2024Assignee: Daifuku Co., Ltd.Inventor: Tadashi Nishikawa
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Publication number: 20240083689Abstract: A conveying apparatus is capable of conveying an object supported by a support along a vertical direction in a non-restricted area and a restricted area narrower than the non-restricted area. The conveying apparatus has a first detection device, a second detection device and a controller. The first detection device detects whether a runout of the conveyed object supported by the support from a normal position is within or outside the non-restricted area. The second detection device detects whether the runout from the normal position of the object supported by the support is within or outside the restricted area. The controller controls the conveyance operation of the object to be conveyed by the support based on the detection results of the first detection device and the second detection device.Type: ApplicationFiled: August 2, 2023Publication date: March 14, 2024Applicant: DAIFUKU CO., LTD.Inventor: Tadashi NISHIKAWA
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Patent number: 11904741Abstract: An adjustment mechanism of nursery equipment includes a string connecting a fixed portion and a movable portion, a reel that is rotatable in both forward and reverse directions and that changes the position or shape of the movable portion by winding up and feeding out the string, a biasing member that biases the reel in such a way that the reel rotates in a winding direction of the string, and a lock member that prohibits rotation of the reel. A biasing force of the biasing member is selected to be smaller than a biasing force with which the movable portion tends to move downward in the vertical direction.Type: GrantFiled: April 25, 2022Date of Patent: February 20, 2024Assignee: GRACO CHILDREN'S PRODUCTS, INC.Inventors: Yuji Shibata, Tadashi Nishikawa, Tomoyuki Honda
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Patent number: 11897698Abstract: A transport vehicle control system restricts a travel speed of an article transport vehicle to less than or equal to a restrictive speed prescribed in advance, in a case where a temperature sensor detects that the temperature of a regenerative resistor is greater than or equal to a first temperature set to a higher temperature than a steady temperature range which is a temperature range of a steady state prescribed in advance, and disconnects the connection between a power supply unit and a travel motor with a switch, in a case where the temperature sensor detects that the temperature of the regenerative resistor is greater than or equal to a second temperature set to a higher temperature than the first temperature.Type: GrantFiled: August 31, 2021Date of Patent: February 13, 2024Assignee: Daifuku Co., Ltd.Inventors: Seiya Nobuta, Tadashi Nishikawa
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Publication number: 20220354273Abstract: An adjustment mechanism of nursery equipment includes a string connecting a fixed portion and a movable portion, a reel that is rotatable in both forward and reverse directions and that changes the position or shape of the movable portion by winding up and feeding out the string, a biasing member that biases the reel in such a way that the reel rotates in a winding direction of the string, and a lock member that prohibits rotation of the reel. A biasing force of the biasing member is selected to be smaller than a biasing force with which the movable portion tends to move downward in the vertical direction.Type: ApplicationFiled: April 25, 2022Publication date: November 10, 2022Applicant: GRACO CHILDREN'S PRODUCTS, INC.Inventors: Yuji Shibata, Tadashi Nishikawa, Tomoyuki Honda
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Publication number: 20220354271Abstract: An adjustment mechanism of nursery equipment includes a string connecting a fixed portion and a movable portion, a reel that is rotatable in both forward and reverse directions and that changes the position or shape of the movable portion by winding up and feeding out the string, a one-way clutch mechanism that allows rotation of the reel in a winding direction of the string and prohibits rotation of the reel in a feeding direction of the string, and an unlock member that unlocks the reel from a rotation prohibited state caused by the one-way clutch mechanism and thus allows the reel to rotate freelyType: ApplicationFiled: April 25, 2022Publication date: November 10, 2022Applicant: GRACO CHILDREN'S PRODUCTS, INC.Inventors: Yuji SHIBATA, Tadashi NISHIKAWA
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Publication number: 20220354272Abstract: An adjustment mechanism of nursery equipment includes a string connecting a fixed portion and a movable portion, a reel that is rotatable in both forward and reverse directions and that changes the position or shape of the movable portion by winding up and feeding out the string, a rotation operation member that controls rotation of the reel, a motion transmission portion that transmits a rotational motion of the rotation operation member to the reel, and a motion separation portion that does not transmit the rotational motion of the rotation operation member to the reel.Type: ApplicationFiled: April 25, 2022Publication date: November 10, 2022Applicant: GRACO CHILDREN'S PRODUCTS, INC.Inventors: Yuji Shibata, Tadashi Nishikawa
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Publication number: 20220354274Abstract: Nursery equipment includes: a body (car seat body); an extended portion (ISOFIX) extended from the car seat body; and an adjustment mechanism for adjusting the position or shape of the ISOFIX. The adjustment mechanism includes a string having one end connected to the car seat body and the other end held by the ISOFIX, a reel that is rotatable in both forward and reverse directions and that changes the position or shape of the ISOFIX by winding up and feeding out the string, and a rotation lock mechanism that prohibits rotation of the reel.Type: ApplicationFiled: April 25, 2022Publication date: November 10, 2022Applicant: GRACO CHILDREN'S PRODUCTS, INC.Inventors: Yuji SHIBATA, Tadashi NISHIKAWA
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Publication number: 20220073284Abstract: A transport vehicle control system restricts a travel speed of an article transport vehicle to less than or equal to a restrictive speed prescribed in advance, in a case where a temperature sensor detects that the temperature of a regenerative resistor is greater than or equal to a first temperature set to a higher temperature than a steady temperature range which is a temperature range of a steady state prescribed in advance, and disconnects the connection between a power supply unit and a travel motor with a switch, in a case where the temperature sensor detects that the temperature of the regenerative resistor is greater than or equal to a second temperature set to a higher temperature than the first temperature.Type: ApplicationFiled: August 31, 2021Publication date: March 10, 2022Inventors: Seiya Nobuta, Tadashi Nishikawa
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Publication number: 20220061609Abstract: A cleaning system includes: a cleaning vehicle 1 that travels along a predetermined travel path R to clean the travel path; and a maintenance facility 2 provided at a maintenance stop position A set on the travel path R, wherein the cleaning vehicle 1 includes a suction portion 14 that sucks up dust on the travel path R, a storage portion that stores the sucked up dust, and a discharge portion 16 that discharges the dust stored in the storage portion to the outside, and the maintenance facility 2 includes a dust collection portion 214 that collects the dust discharged to the outside from the storage portion via the discharge portion 16 of the cleaning vehicle 1 stopped at the maintenance stop position A.Type: ApplicationFiled: July 2, 2021Publication date: March 3, 2022Inventor: Tadashi Nishikawa
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Patent number: 10310513Abstract: A conveyance control device executes: a control step of detecting entering to a merging point adjacent area set on adjacent to each merging point on the conveyance route; a detection step of detecting whether there is an obstacle around the carrying cart; a communication step of performing, when the entering to each merging point adjacent area is detected, local wireless communications with another carrying cart by using a common frequency band and a common identification code set to values different among merging points; and a merging point passing control step of starting the communication step when the other carrying cart is detected in the merging point adjacent area in the detection step, and causing passing of a merging point in accordance with a priority set to each entering passage to the merging point, after a handshake with the other carrying cart is successfully performed in the communication step.Type: GrantFiled: March 20, 2017Date of Patent: June 4, 2019Assignees: DAIFUKU CO., LTD., HOKUYO AUTOMATIC CO., LTD.Inventors: Yoji Maejima, Tadashi Nishikawa, Yoshitaka Tanaka
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Patent number: 9932175Abstract: An article transport facility comprises a plurality of article transport vehicles each of which is configured to travel along a track and to transport an article. Each article transport vehicle includes at least one obstacle detection sensor, each configured to detect an obstacle that exists in at least one detection area defined in a peripheral area of the article transport vehicle. The transport vehicle controller of each article transport vehicle is configured to receive the detection area information from the transport facility controller through wireless communication, and to transmit the received detection area information to at least one of the at least one obstacle detection sensor. Each of the at least one obstacle detection sensor is configured to cause the area information memory to store the transmitted detection area information.Type: GrantFiled: December 22, 2016Date of Patent: April 3, 2018Assignee: Daifuku Co., Ltd.Inventors: Tomotaka Kinugawa, Tadashi Nishikawa
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Patent number: 9822929Abstract: A first control device executes, if it is determined that a second control device has become unable to output an operation instruction, continued operation processing for operating an inactive gas supply portion based on the operation instruction that was last output by the second control device. The first control device further executes, if it is determined during execution of continued operation processing that a stop condition is satisfied, operation stop processing for stopping the inactive gas supply portion by suspending the continued operation processing.Type: GrantFiled: June 18, 2014Date of Patent: November 21, 2017Assignee: Daifuku Co., Ltd.Inventors: Takeshi Shin, Tadashi Nishikawa, Masahiro Takahara, Toshihito Ueda
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Publication number: 20170283182Abstract: A conveyance control device executes: a control step of detecting entering to a merging point adjacent area set on adjacent to each merging point on the conveyance route; a detection step of detecting whether there is an obstacle around the carrying cart; a communication step of performing, when the entering to each merging point adjacent area is detected, local wireless communications with another carrying cart by using a common frequency band and a common identification code set to values different among merging points; and a merging point passing control step of starting the communication step when the other carrying cart is detected in the merging point adjacent area in the detection step, and causing passing of a merging point in accordance with a priority set to each entering passage to the merging point, after a handshake with the other carrying cart is successfully performed in the communication step,Type: ApplicationFiled: March 20, 2017Publication date: October 5, 2017Applicants: DAIFUKU CO., LTD., HOKUYO AUTOMATIC CO., LTD.Inventors: Yoji MAEJIMA, Tadashi NISHIKAWA, Yoshitaka TANAKA
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Patent number: 9758308Abstract: The article transport vehicles are equipped with wireless tags that transmit tag information, and an article transport facility includes: a transport control apparatus that controls the entrance of the vehicles into the control area such that the number of vehicles that are present in one control area is no greater than a control number; a plurality of access points; and a position detection apparatus that detects the respective positions of the vehicles with an accuracy with which a plurality of positions in the control area are distinguishable, based on the same tag information that has been received by the access points. The transport control apparatus permits a number of vehicles, the number being greater than the control number, to enter the control area if a predetermined permission condition is satisfied, based on the positional information that indicates the position of each vehicle.Type: GrantFiled: April 10, 2017Date of Patent: September 12, 2017Assignee: Daifuku Co., Ltd.Inventors: Tadashi Nishikawa, Takeshi Shin
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Publication number: 20170183154Abstract: An article transport facility comprises a plurality of article transport vehicles each of which is configured to travel along a track and to transport an article. Each article transport vehicle includes at least one obstacle detection sensor, each configured to detect an obstacle that exists in at least one detection area defined in a peripheral area of the article transport vehicle. The transport vehicle controller of each article transport vehicle is configured to receive the detection area information from the transport facility controller through wireless communication, and to transmit the received detection area information to at least one of the at least one obstacle detection sensor. Each of the at least one obstacle detection sensor is configured to cause the area information memory to store the transmitted detection area information.Type: ApplicationFiled: December 22, 2016Publication date: June 29, 2017Inventors: Tomotaka Kinugawa, Tadashi Nishikawa
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Patent number: 9589821Abstract: A supporting portion of an article transport device supports a position detection device for detecting the position of a detection target object. A control device executes an update control to update target position information in accordance with an update instruction issued through a manual operation performed by an operator during a maintenance operation performed at an interval longer than a set period, and executes the update control on condition that an elapsed time since issuance of the update instruction has reached an automatic updating time that is a time shorter than the set period.Type: GrantFiled: April 5, 2016Date of Patent: March 7, 2017Assignee: Daifuku Co., Ltd.Inventor: Tadashi Nishikawa
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Patent number: 9573768Abstract: When a controller determines based on state information that the article handling device is in a normal condition, the controller is configured to transmit to the managing device as the notifying information, normal condition notifying information which includes normal condition determination information which indicates that the article handling device is in a normal condition or normal condition notifying information which includes the normal condition determination information and normal-time information generated based on the state information.Type: GrantFiled: May 24, 2016Date of Patent: February 21, 2017Assignee: Daifuku Co., Ltd.Inventors: Tadashi Nishikawa, Ryou Yamashita