Patents by Inventor Masunori Shibata
Masunori Shibata 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: 11365090Abstract: An elevator device including on-car presence detection units, each being configured to detect presence of a person on top of a corresponding one of cars, on-car operation panels, each to be operated for a manual operation of the corresponding one of cars, and an elevator control device including a car operation approval unit configured to approve or cancel the operation on the on-car operation panels. When the on-car presence detection units have detected the presence of persons on top of the plurality of cars, the operation on the on-car operation panels of all the cars is canceled by the car operation approval unit. When the on-car presence detection unit has detected the presence of a person on top of one of the plurality of cars, the car operation approval unit approves the operation on the on-car operation panel of any one of the plurality of cars.Type: GrantFiled: May 23, 2016Date of Patent: June 21, 2022Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Masunori Shibata, Kunimitsu Kishimoto, Takuo Kugiya, Norikazu Ito, Masayuki Kakio
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Patent number: 10858218Abstract: This invention is concerning an elevator apparatus, in which a safety monitoring device corrects a detected car position using a signal from a car position detection device and monitors the presence or absence of car overspeed on the basis of an overspeed detection pattern that varies in accordance with car position. The car position detection device includes a first car position detection sensor and a second car position detection sensor which are arranged side by side in a vertical direction. The safety monitoring device performs, in parallel, first overspeed monitoring based on a car position corrected using a signal from the first car position detection sensor and second overspeed monitoring based on a car position corrected using a signal from the second car position detection sensor.Type: GrantFiled: July 22, 2015Date of Patent: December 8, 2020Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Masunori Shibata, Takuo Kugiya, Kazunori Washio
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Publication number: 20190077633Abstract: An elevator device including on-car presence detection units, each being configured to detect presence of a person on top of a corresponding one of cars, on-car operation panels, each to be operated for a manual operation of the corresponding one of cars, and an elevator control device including a car operation approval unit configured to approve or cancel the operation on the on-car operation panels. When the on-car presence detection units have detected the presence of persons on top of the plurality of cars, the operation on the on-car operation panels of all the cars is canceled by the car operation approval unit. When the on-car presence detection unit has detected the presence of a person on top of one of the plurality of cars, the car operation approval unit approves the operation on the on-car operation panel of any one of the plurality of cars.Type: ApplicationFiled: May 23, 2016Publication date: March 14, 2019Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Masunori SHIBATA, Kunimitsu KISHIMOTO, Takuo KUGIYA, Norikazu ITO, Masayuki KAKIO
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Patent number: 10124987Abstract: An elevator device includes: a controller and an emergency terminal speed-limiting device to decelerate a car when speed of the car within a predetermined certain distance from an terminal end section of a shaft is detected to have reached or exceeded an overspeed reference. The overspeed reference is set smaller as a distance of the car from the terminal end section of the shaft decreases. The controller includes: a lower deceleration limit determination controller to determine a lower deceleration limit at which the speed of the car is caused to be at or below the overspeed reference, based on a position and a speed of the car within the certain distance from the terminal end section of the shaft, and a deceleration controller to control deceleration of the car within the certain distance, in a range greater than the lower deceleration limit determined by the lower deceleration limit determination unit.Type: GrantFiled: September 9, 2014Date of Patent: November 13, 2018Assignee: Mitsubishi Electric CorporationInventors: Masunori Shibata, Takuo Kugiya
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Publication number: 20180201477Abstract: This invention is concerning an elevator apparatus, in which a safety monitoring device corrects a detected car position using a signal from a car position detection device and monitors the presence or absence of car overspeed on the basis of an overspeed detection pattern that varies in accordance with car position. The car position detection device includes a first car position detection sensor and a second car position detection sensor which are arranged side by side in a vertical direction. The safety monitoring device performs, in parallel, first overspeed monitoring based on a car position corrected using a signal from the first car position detection sensor and second overspeed monitoring based on a car position corrected using a signal from the second car position detection sensor.Type: ApplicationFiled: July 22, 2015Publication date: July 19, 2018Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Masunori SHIBATA, Takuo KUGIYA, Kazunori WASHIO
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Publication number: 20170217724Abstract: An elevator device includes: a controller and an emergency terminal speed-limiting device to decelerate a car when speed of the car within a predetermined certain distance from an terminal end section of a shaft is detected to have reached or exceeded an overspeed reference. The overspeed reference is set smaller as a distance of the car from the terminal end section of the shaft decreases. The controller includes: a lower deceleration limit determination controller to determine a lower deceleration limit at which the speed of the car is caused to be at or below the overspeed reference, based on a position and a speed of the car within the certain distance from the terminal end section of the shaft, and a deceleration controller to control deceleration of the car within the certain distance, in a range greater than the lower deceleration limit determined by the lower deceleration limit determination unit.Type: ApplicationFiled: September 9, 2014Publication date: August 3, 2017Applicant: Mitsubishi Electronic CorporationInventors: Masunori SHIBATA, Takuo KUGIYA
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Patent number: 8887873Abstract: In an elevator device, a signal diagnosis device includes: a signal input section to which a sensor signal from a sensor is input; a disconnection detecting section for outputting a diagnosis signal for detecting disconnection to the sensor and detecting a state of a signal turned back at the sensor to be input so as to detect whether or not disconnection of the signal from the sensor occurs; a switch for turning ON/OFF an input of the signal to the disconnection detecting section; and a disconnection-detection diagnosis section for operating the switch to diagnose whether or not the disconnection detecting section functions normally. Further, a car is stopped when occurrence of the disconnection is determined by the signal diagnosis device or when an abnormality is detected by the disconnection-detection diagnosis section.Type: GrantFiled: June 16, 2010Date of Patent: November 18, 2014Assignee: Mitsubishi Electric CorporationInventors: Kazunori Washio, Rikio Kondo, Masunori Shibata
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Patent number: 8807285Abstract: In an elevator apparatus, an operation control section controls an operation of a car. Further, a safety monitoring section detects an abnormal state of targets to be monitored during running of the car to stop the running of the car. A safety-monitoring-function inspection section inspects a function of the safety monitoring section. The safety-monitoring-function inspection section causes the safety monitoring section to detect a transition of a state of the targets to be monitored to the abnormal state regardless of an actual state of the targets to be monitored while the car is running under control of the operation control section.Type: GrantFiled: December 15, 2009Date of Patent: August 19, 2014Assignee: Mitsubishi Electric CorporationInventors: Takuo Kugiya, Hiroshi Kigawa, Masunori Shibata, Rikio Kondo
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Publication number: 20120073909Abstract: In an elevator device, when confirming that at least one of a car-position condition and a car-speed condition is satisfied after confirmation of satisfaction of a door-open condition, a brake-operation determining section (51) transmits an operation command for controlling a brake device (20) to demonstrate a braking force for quick stop to a brake-operation command section (52).Type: ApplicationFiled: June 22, 2009Publication date: March 29, 2012Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Rikio Kondo, Masunori Shibata, Jun Hashimoto, Hiroshi Kigawa
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Publication number: 20120043166Abstract: In an elevator device, a signal diagnosis device includes: a signal input section to which a sensor signal from a sensor is input; a disconnection detecting section for outputting a diagnosis signal for detecting disconnection to the sensor and detecting a state of a signal turned back at the sensor to be input so as to detect whether or not disconnection of the signal from the sensor occurs; a switch for turning ON/OFF an input of the signal to the disconnection detecting section; and a disconnection-detection diagnosis section for operating the switch to diagnose whether or not the disconnection detecting section functions normally. Further, a car is stopped when occurrence of the disconnection is determined by the signal diagnosis device or when an abnormality is detected by the disconnection-detection diagnosis section.Type: ApplicationFiled: June 16, 2010Publication date: February 23, 2012Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Kazunori Washio, Rikio Kondo, Masunori Shibata
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Publication number: 20110272216Abstract: In an elevator apparatus, an operation control section controls an operation of a car. Further, a safety monitoring section detects an abnormal state of targets to be monitored during running of the car to stop the running of the car. A safety-monitoring-function inspection section inspects a function of the safety monitoring section. The safety-monitoring-function inspection section causes the safety monitoring section to detect a transition of a state of the targets to be monitored to the abnormal state regardless of an actual state of the targets to be monitored while the car is running under control of the operation control section.Type: ApplicationFiled: December 15, 2009Publication date: November 10, 2011Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Takuo Kugiya, Hiroshi Kigawa, Masunori Shibata, Rikio Kondo
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Patent number: 7896136Abstract: In an elevator apparatus, a brake device is controlled by a brake control device. The brake control device has a first brake control portion for operating the brake device to stop a car as an emergency measure upon detection of an abnormality, and a second brake control portion for reducing a braking force of the brake device when a deceleration of the car becomes equal to or larger than a predetermined value during emergency braking operation of the first brake control portion. The second brake control portion controls the brake device independently of the first brake control portion.Type: GrantFiled: March 2, 2006Date of Patent: March 1, 2011Assignee: Mitsubishi Electric CorporationInventors: Masunori Shibata, Takaharu Ueda, Satoru Takahashi, Ken-Ichi Okamoto
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Patent number: 7891466Abstract: In an elevator apparatus, a brake device stops a car from running. The brake device has a brake control portion for controlling a braking force generated at a time of emergency braking to adjust a deceleration of the car, and a timer circuit for invalidating the control of the braking force performed by the brake control portion after a lapse of a predetermined time from a moment when an emergency braking command is generated.Type: GrantFiled: March 17, 2006Date of Patent: February 22, 2011Assignee: Mitsubishi Electric CorporationInventors: Ken-Ichi Okamoto, Satoru Takahashi, Takaharu Ueda, Masunori Shibata
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Patent number: 7770698Abstract: In an elevator apparatus, a brake device stops a car from running. The brake device has a power shutoff portion for shutting off a supply of power to a brake opening coil in response to a brake actuation command, and a current adjusting portion for supplying the brake opening coil with power while adjusting an amount of current in response to a deceleration reduction command from a brake control portion. The current adjusting portion can supply the brake opening coil with power even when the supply of power to the brake opening coil is shut off by the power shutoff portion.Type: GrantFiled: March 17, 2006Date of Patent: August 10, 2010Assignee: Mitsubishi Electric CorporationInventors: Ken-Ichi Okamoto, Satoru Takahashi, Takaharu Ueda, Masunori Shibata
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Patent number: 7748502Abstract: In an elevator apparatus, a single car is raised and lowered by a plurality of hoisting machines. An elevator control device for controlling the hoisting machines generates speed commands separately for the hoisting machines. When a current value of one of the hoisting machines reaches a current set value, which is set in advance during acceleration of the car, the elevator control device applies the speed command for that one of the hoisting machines, whose current value has reached the current set value, to the other hoisting machine as well.Type: GrantFiled: April 13, 2006Date of Patent: July 6, 2010Assignee: Mitsubishi Electric CorporationInventors: Takaharu Ueda, Masunori Shibata, Masaya Sakai
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Patent number: 7730998Abstract: In an elevator apparatus, a brake device stops a car from running. The brake device can adjust the magnitude of part of a total braking force generated at a time of emergency braking of the car. As an example of the brake device, the brake device has a nonadjustable brake portion for immediately generating a braking force without making an adjustment thereof at the time of emergency braking of the car, and an adjustable brake portion for generating a braking force while making an adjustment thereof at the time of emergency braking of the car.Type: GrantFiled: March 20, 2006Date of Patent: June 8, 2010Assignee: Mitsubishi Electric CorporationInventors: Satoru Takahashi, Ken-Ichi Okamoto, Takaharu Ueda, Masunori Shibata
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Patent number: 7669697Abstract: In an elevator apparatus, a brake control device has a first brake control portion, a second brake control portion, and a third brake control portion. The first brake control portion operates a hoisting machine brake to stop a ascending/descending body as an emergency measure when an abnormality is detected. The second brake control portion reduces a braking force of the hoisting machine brake when a deceleration of the ascending/descending body becomes equal to or higher than a predetermined value during an emergency braking operation of the hoisting machine brake. The third brake control portion monitors a slip speed of a main rope with respect to a drive sheave during emergency braking operation of the hoisting machine brake, and reduces a braking force of the hoisting machine brake when the slip speed of the main rope becomes equal to or higher than a predetermined value.Type: GrantFiled: February 1, 2006Date of Patent: March 2, 2010Assignee: Mitsubishi Electric CorporationInventors: Takaharu Ueda, Masunori Shibata, Ken-Ichi Okamoto, Satoru Takahashi
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Publication number: 20100044159Abstract: In an elevator apparatus, a brake device stops a car from running. The brake device has a power shutoff portion for shutting off a supply of power to a brake opening coil in response to a brake actuation command, and a current adjusting portion for supplying the brake opening coil with power while adjusting an amount of current in response to a deceleration reduction command from a brake control portion. The current adjusting portion can supply the brake opening coil with power even when the supply of power to the brake opening coil is shut off by the power shutoff portion.Type: ApplicationFiled: March 17, 2006Publication date: February 25, 2010Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Ken-Ichi Okamoto, Satoru Takahashi, Takaharu Ueda, Masunori Shibata
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Publication number: 20100032245Abstract: In an elevator apparatus, a brake device is controlled by a brake control device. The brake control device has a first brake control portion for operating the brake device to stop a car as an emergency measure upon detection of an abnormality, and a second brake control portion for reducing a braking force of the brake device when a deceleration of the car becomes equal to or larger than a predetermined value during emergency braking operation of the first brake control portion. The second brake control portion controls the brake device independently of the first brake control portion.Type: ApplicationFiled: March 2, 2006Publication date: February 11, 2010Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Masunori Shibata, Takaharu Ueda, Satoru Takahashi, Ken-Ichi Okamoto
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Publication number: 20100025162Abstract: In an elevator apparatus, a brake device stops a car from running. The brake device has a brake control portion for controlling a braking force generated at a time of emergency braking to adjust a deceleration of the car, and a timer circuit for invalidating the control of the braking force performed by the brake control portion after a lapse of a predetermined time from a moment when an emergency braking command is generated.Type: ApplicationFiled: March 17, 2006Publication date: February 4, 2010Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Ken-Ichi Okamoto, Satoru Takahashi, Takaharu Ueda, Masunori Shibata