Patents by Inventor Takaharu Ueda
Takaharu Ueda 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).
-
Patent number: 10407276Abstract: An elevator device that can continuously evacuate any evacuee left in a building by using an elevator. The elevator device includes a control device configured to maintain an evacuation operation mode corresponding to a rescue floor concerned when a car operation instructing device is operated on the rescue floor concerned before a predetermined time passes from when the car stops at the rescue floor concerned during the evacuation operation mode corresponding to the rescue floor concerned, and release the evacuation operation mode corresponding to the rescue floor concerned when the car operation instructing device is not operated on the rescue floor concerned before the predetermined time passes from when the car stops at the rescue floor concerned during the evacuation operation mode corresponding to the rescue floor concerned.Type: GrantFiled: September 24, 2014Date of Patent: September 10, 2019Assignee: Mitsubishi Electric CorporationInventors: Chiaki Honda, Masashi Komatsu, Ashiqur Rahman, David Willem Lodewijk Offerhaus, Takaharu Ueda, Shinichi Kuroda, Koji Yamagishi, Kenji Taniyama
-
Patent number: 10150646Abstract: An elevator device enabling efficient evacuation of people left in a building is provided. The elevator device includes: an evacuation operation mode request switch provided in a hall of an elevator on a rescue floor; a car that if the evacuation operation mode request switch is kept in an operated state, keeps operating in an evacuation operation mode in which the car moves between the rescue floor and an evacuation floor; and an operation control device that is provided in the hall of the elevator on the rescue floor, and if the operation control device is operated when the car is stopped at the rescue floor, moves the car to the evacuation floor.Type: GrantFiled: September 17, 2013Date of Patent: December 11, 2018Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Yoshimasa Koba, Shinichi Kuroda, Takaharu Ueda, Ashiqur Rahman, David Willem Lodewijk Offerhaus
-
Publication number: 20170305717Abstract: An elevator device that can continuously evacuate any evacuee left in a building by using an elevator. The elevator device includes a control device configured to maintain an evacuation operation mode corresponding to a rescue floor concerned when a car operation instructing device is operated on the rescue floor concerned before a predetermined time passes from when the car stops at the rescue floor concerned during the evacuation operation mode corresponding to the rescue floor concerned, and release the evacuation operation mode corresponding to the rescue floor concerned when the car operation instructing device is not operated on the rescue floor concerned before the predetermined time passes from when the car stops at the rescue floor concerned during the evacuation operation mode corresponding to the rescue floor concerned.Type: ApplicationFiled: September 24, 2014Publication date: October 26, 2017Applicant: Mitsubishi Electric CorporationInventors: Chiaki HONDA, Masashi KOMATSU, Ashiqur RAHMAN, David Willem Lodewijk OFFERHAUS, Takaharu UEDA, Shinichi KURODA, Koji YAMAGISHI, Kenji TANIYAMA
-
Publication number: 20160280510Abstract: An elevator device enabling efficient evacuation of people left in a building is provided. The elevator device includes: an evacuation operation mode request switch provided in a hall of an elevator on a rescue floor; a car that if the evacuation operation mode request switch is kept in an operated state, keeps operating in an evacuation operation mode in which the car moves between the rescue floor and an evacuation floor; and an operation control device that is provided in the hall of the elevator on the rescue floor, and if the operation control device is operated when the car is stopped at the rescue floor, moves the car to the evacuation floor.Type: ApplicationFiled: September 17, 2013Publication date: September 29, 2016Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Yoshimasa KOBA, Shinichi KURODA, Takaharu UEDA, Ashiqur RAHMAN, David Willem, Lodewijk OFFERHAUS
-
Patent number: 8430212Abstract: An elevator apparatus includes a safety circuit section including a plurality of abnormality detection units, a safety control device, failure detection unit, and circuit changeover unit. The safety control device controls electric power supply to a driving device and a brake device in accordance with a content of an abnormality detected by the abnormality detection units. The failure detection unit detects a failure of the safety control device. When the failure of the safety control device is detected, the circuit changeover unit forms a failure-time circuit in which the electric power supply to the driving device and the brake device is interrupted directly by the abnormality detection unit.Type: GrantFiled: June 27, 2008Date of Patent: April 30, 2013Assignee: Mitsubishi Electric CorporationInventors: Takaharu Ueda, Satoru Takahashi
-
Patent number: 8365872Abstract: In an elevator device, a car is raised and lowered by a plurality of hoisting machines respectively including hoisting machine brakes. Each of the hoisting machine brakes has a braking force large enough to stop the car by itself. Each of a plurality of brake control sections respectively for controlling the corresponding hoisting machine brakes includes a plurality of calculation sections. The calculation sections can detect a failure of the calculation sections by comparing own results of calculations and cause a corresponding one of the hoisting machine brakes to perform a braking operation upon detection of the failure of the calculation sections.Type: GrantFiled: April 15, 2008Date of Patent: February 5, 2013Assignee: Mitsubishi Electric CorporationInventor: Takaharu Ueda
-
Patent number: 8316996Abstract: In an elevator apparatus, a rescue operation for a car is performed by a rescue operation controller. The rescue operation controller obtains a rescue operation voltage value and applies a voltage having the rescue operation voltage value to a brake coil in response to a signal from a speed detector at a time of the rescue operation for the car. The rescue operation voltage value is a value of the voltage necessary to reduce braking force of a brake device to move the car by using a state of imbalance between the car and a counterweight.Type: GrantFiled: July 25, 2007Date of Patent: November 27, 2012Assignee: Mitsubishi Electric CorporationInventors: Jun Hashimoto, Takaharu Ueda
-
Patent number: 8297411Abstract: In an elevator device, movement of a car is braked by a brake device in a state in which driving of a hoist is stopped. While the drive of the hoist is stopped, braking force of the brake device is controlled by a brake control device based on a signal from a movement detector that generates a signal corresponding to movement of the car. The brake control device generates a target pattern for at least one of speed and acceleration of the car and controls braking force of the brake device such that the movement of the car follows the target pattern.Type: GrantFiled: March 27, 2007Date of Patent: October 30, 2012Assignee: Mitsubishi Electric CorporationInventors: Jun Hashimoto, Takaharu Ueda
-
Patent number: 8272482Abstract: An elevator apparatus performing proper braking control of a car according to a detected content of a failure, and including: a semiconductor switch connected in series to a brake coil, for varying current flowing through the brake coil; an interruption switch connected in series to the brake coil and the semiconductor switch and capable of interrupting current flowing through the brake coil; a braking force control processing mechanism controlling an amount of current flowing through the semiconductor switch according to deceleration of the car when the car stops; a failure detection section detecting failure in the braking force control processing mechanism; a critical event detection mechanism detecting a critical event requiring an urgent stop of the car based on a state detection signal; and a brake power supply interrupting mechanism turning the interruption switch OFF to apply braking when the failure and the critical event is detected.Type: GrantFiled: June 14, 2007Date of Patent: September 25, 2012Assignee: Mitsubishi Electric CorporationInventors: Satoru Takahashi, Takaharu Ueda
-
Patent number: 8186484Abstract: An elevator system in which a controller monitors whether or not a speed of an ascending/descending body reaches a preset overspeed. At a time of maintenance work, a stopper is interposed between a buffer and the ascending/descending body to limit a lowered position of the ascending/descending body. A stopper detector detects installation of the stopper onto at least one of the buffer and the ascending/descending body. When the stopper is detected by the stopper detector, the controller lowers a set value of the overspeed.Type: GrantFiled: September 20, 2011Date of Patent: May 29, 2012Assignee: Mitsubishi Electric CorporationInventors: Takaharu Ueda, Eiji Ando
-
Patent number: 8177034Abstract: An elevator system in which a controller monitors whether or not a speed of an ascending/descending body reaches a preset overspeed. At a time of maintenance work, a stopper is interposed between a buffer and the ascending/descending body to limit a lowered position of the ascending/descending body. A stopper detector detects installation of the stopper onto at least one of the buffer and the ascending/descending body. When the stopper is detected by the stopper detector, the controller lowers a set value of the overspeed.Type: GrantFiled: November 20, 2006Date of Patent: May 15, 2012Assignee: Mitsubishi Electric CorporationInventors: Takaharu Ueda, Eiji Ando
-
Patent number: 8177035Abstract: An elevator system in which a controller monitors whether or not a speed of an ascending/descending body reaches a preset overspeed. At a time of maintenance work, a stopper is interposed between a buffer and the ascending/descending body to limit a lowered position of the ascending/descending body. A stopper detector detects installation of the stopper onto at least one of the buffer and the ascending/descending body. When the stopper is detected by the stopper detector, the controller lowers a set value of the overspeed.Type: GrantFiled: September 20, 2011Date of Patent: May 15, 2012Assignee: Mitsubishi Electric CorporationInventors: Takaharu Ueda, Eiji Ando
-
Patent number: 8167094Abstract: Provided is an elevator apparatus including a first electromagnetic switch and a second electromagnetic switch provided between a first electromagnetic coil and a second electromagnetic coil of a first brake device and a second brake device and a power source. The brake control section includes: a first electromagnetic coil control switch provided between the first electromagnetic coil and a ground section; a second electromagnetic coil control switch provided between the second electromagnetic coil and the ground section; a first processing section for opening and closing the first electromagnetic switch and the first electromagnetic coil control switch in response to a braking operation command issued from an operation control section; and a second processing section for opening and closing the second electromagnetic switch and the second electromagnetic coil control switch in response to the braking operation command.Type: GrantFiled: April 26, 2007Date of Patent: May 1, 2012Assignee: Mitsubishi Electric CorporationInventors: Takaharu Ueda, Takehiko Kubota, Akihiro Chida, Satoru Takahashi, Rikio Kondo
-
Patent number: 8115162Abstract: In a sliding door apparatus, a first entrance is opened and closed by a first door, and a second entrance that faces the first entrance is opened and closed by a second door. Imaging means that captures images across a space between the first entrance and the second entrance is disposed beside the space. An image processing and determining portion determines presence or absence of an obstruction inside the space based on image data from the imaging means.Type: GrantFiled: May 29, 2007Date of Patent: February 14, 2012Assignee: Mitsubishi Electric CorporationInventors: Masahiro Shikai, Akihide Shiratsuki, Kazuo Takashima, Hiroyuki Kawano, Takaharu Ueda, Toshio Masuda
-
Publication number: 20120006628Abstract: An elevator system in which a controller monitors whether or not a speed of an ascending/descending body reaches a preset overspeed. At a time of maintenance work, a stopper is interposed between a buffer and the ascending/descending body to limit a lowered position of the ascending/descending body. Stopper detection means detects installation of the stopper onto at least one of the buffer and the ascending/descending body. When the stopper is detected by the stopper detection means, the controller lowers a set value of the overspeed.Type: ApplicationFiled: September 20, 2011Publication date: January 12, 2012Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Takaharu Ueda, Eiji Ando
-
Publication number: 20120006631Abstract: An elevator system in which a controller monitors whether or not a speed of an ascending/descending body reaches a preset overspeed. At a time of maintenance work, a stopper is interposed between a buffer and the ascending/descending body to limit a lowered position of the ascending/descending body. Stopper detection means detects installation of the stopper onto at least one of the buffer and the ascending/descending body. When the stopper is detected by the stopper detection means, the controller lowers a set value of the overspeed.Type: ApplicationFiled: September 20, 2011Publication date: January 12, 2012Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Takaharu UEDA, Eiji ANDO
-
Patent number: 7992687Abstract: A door device for an elevator is provided with an elevator door for opening/closing a doorway through which an interior of a car communicates with a landing, a distance sensor for continuously detecting a distance from the doorway to a passenger at the landing, a processing device for obtaining a door control command corresponding to information from the distance sensor, and a door control device for controlling a movement of the elevator door based on the door control command from the processing device. Thus, the elevator door can be moved in accordance with the movement of the passenger. Accordingly, the passenger is allowed to board the car more reliably, and a running efficiency of the elevator can be enhanced.Type: GrantFiled: March 20, 2006Date of Patent: August 9, 2011Assignee: Mitsubishi Electric CorporationInventors: Takashi Yumura, Takaharu Ueda
-
Patent number: 7938231Abstract: In an elevator apparatus, a brake control device has a first brake control portion for operating a brake device upon detection of an abnormality to stop a car as an emergency measure, and a second brake control portion for reducing a braking force of the brake device when a degree of deceleration of the car becomes equal to or higher than a predetermined value at a time of emergency braking operation of the first brake control portion. The second brake control portion detects emergency braking operation of the brake device independently of the first brake control portion.Type: GrantFiled: July 27, 2006Date of Patent: May 10, 2011Assignee: Mitsubishi Electric CorporationInventors: Takaharu Ueda, Rikio Kondo, Hiroshi Kigawa
-
Patent number: 7931128Abstract: In an elevator device, a drive unit has a drive sheave, a motor for rotating the drive sheave, and a motor driving portion for driving the motor. The motor driving portion is controlled by a control unit. When a car is running, the control unit monitors a load on at least one component within the drive unit, and generates a control command regarding a running speed of the car in accordance with a state of the load, and outputs the control command to the motor driving portion.Type: GrantFiled: July 25, 2006Date of Patent: April 26, 2011Assignee: Mitsubishi Electric CorporationInventors: Masaya Sakai, Takaharu Ueda
-
Patent number: 7931127Abstract: In an elevator apparatus, a brake device is controlled by a brake control device. The brake control device is capable of performing braking force reduction control for reducing the braking force of the brake device at a time of emergency braking of a car. The brake control device monitors a running state of the car at the time of emergency braking thereof, and makes a switchover between validity and invalidity of braking force reduction control such that the car is stopped within a preset allowable stopping distance.Type: GrantFiled: August 3, 2006Date of Patent: April 26, 2011Assignee: Mitsubishi Electric CorporationInventors: Rikio Kondo, Hiroshi Kigawa, Takaharu Ueda