Patents by Inventor Takaaki Yonezawa
Takaaki Yonezawa 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: 11041266Abstract: A washing machine is provided. The washing machine includes an input shaft, configured to supply a rotary power to a rotation part for rotating washings; a motor, configured to rotate in a forward and backward direction and served as a power source of the rotation part; a transmission arranged between an output shaft of the motor and the input shaft of the rotation part. The transmission includes a transformable driving side pulley unit disposed on the output shaft; a transformable driven side pulley unit disposed on the input shaft; a driving belt for transferring power between the pulley unit. The driving side pulley unit/driven side pulley unit is directly installed on the output shaft/input shaft by locating each end of the output shaft/input shaft at a movable pulley and a fixed pulley respectively, so that the driving side pulley unit/driven side pulley unit rotates integrally with the output shaft/input shaft.Type: GrantFiled: August 17, 2016Date of Patent: June 22, 2021Assignees: QINGDAO HAIER WASHING MACHINE CO., LTD., AQUA CO., LTD.Inventors: Takashi Onishi, Yoshikazu Bamba, Takaaki Yonezawa, Katsumi Oe
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Patent number: 10683598Abstract: A washing machine, which does not have a narrowed portion on a throw-in and takeout route of washings, so that washings can be thrown in and taken out smoothly. The washing machine of the present invention comprises: an inner tub for accommodating washings; an outer tub for accommodating the inner tub; a housing comprising a housing body that is configured to accommodate the outer tub and is open at the upper end, a fixed lid fixed to the upper end of the housing body, and a movable lid that is movably disposed on the fixed lid, makes the upper end of the housing body selectively open towards the outside, and is capable of forming a lid side opening for making an inner tub side opening formed on the upper end of the inner tub open upwards; and a water supply unit provided on the fixed lid and used for supplying water to the inner tub, wherein the inner circumference of the lid side opening has a shape and size that make the inner tub side opening substantially open upwards.Type: GrantFiled: February 28, 2017Date of Patent: June 16, 2020Assignees: QINGDAO HAIER WASHING MACHINE CO., LTD., AQUA CO., LTDInventors: Takaaki Yonezawa, Tomonari Kawaguchi, Hiroki Sato, Yoshikazu Bamba, Takashi Onishi, Wataru Nakagawa
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Publication number: 20190242050Abstract: Disclosed is a washing machine including a transmission. The transmission includes: a variable driving side pulley unit arranged on a side of the output shaft; a variable driven side pulley unit arranged on a side of the input shaft; a driving belt capable of transferring the power between the variable driving side pulley unit and the variable driven side pulley unit; a rotating speed sensing part arranged in the driving side pulley unit and configured to change a pulley diameter with the increase of rotating speed; and a torque cam mechanism arranged between pulley hubs and that form a movable pulley and a fixed pulley of the driven side pulley unit and configured to control speed variation time when the pulley diameter varies in a reversing direction with the increase of the rotating speed via cam grooves and pins.Type: ApplicationFiled: August 29, 2016Publication date: August 8, 2019Inventors: Takashi ONISHI, Yoshikazu BAMBA, Takaaki YONEZAWA, Satoru KAWASHIMA
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Publication number: 20180371668Abstract: Provided is a washing machine including: a housing having a housing body, a fixing lid and a movable lid, arranged for accommodating the tub, having a bottom wall supporting the tub from the lower side, and enables an upper end to be opened, the fixing lid is fixed to the upper end of the housing body, the movable lid is movably arranged on the fixing lid, the upper end of the housing body is selectively opened outwards and a lid side opening which upwards opens a drum side opening formed in the upper end part of a drum can be formed in the fixing lid; a damper vertically arranged from the bottom wall; and a hopper arranged between the drum side opening and the lid side opening.Type: ApplicationFiled: February 28, 2017Publication date: December 27, 2018Applicants: Qingdao Haier Washing Machine Co., Ltd., Aqua Co., Ltd.Inventors: Takaaki Yonezawa, Tomonari Kawaguchi, Hiroki Sato, Yoshikazu Banba, Takashi Onishi, Wataru Nakagawa
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Publication number: 20180363207Abstract: A washing machine, which does not have a narrowed portion on a throw-in and takeout route of washings, so that washings can be thrown in and taken out smoothly. The washing machine of the present invention comprises: an inner tub for accommodating washings; an outer tub for accommodating the inner tub; a housing comprising a housing body that is configured to accommodate the outer tub and is open at the upper end, a fixed lid fixed to the upper end of the housing body, and a movable lid that is movably disposed on the fixed lid, makes the upper end of the housing body selectively open towards the outside, and is capable of forming a lid side opening for making an inner tub side opening formed on the upper end of the inner tub open upwards; and a water supply unit provided on the fixed lid and used for supplying water to the inner tub, wherein the inner circumference of the lid side opening has a shape and size that make the inner tub side opening substantially open upwards.Type: ApplicationFiled: February 28, 2017Publication date: December 20, 2018Inventors: Takaaki YONEZAWA, Tomonari KAWAGUCHI, Hiroki SATO, Yoshikazu BAMBA, Takashi ONISHI, Wataru NAKAGAWA
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Publication number: 20180327958Abstract: Provided is a washing machine including: a packing water-sealing part having a packing component arranged between an upper end part of the tub and an upper end part of the drum to inhibit water from leaking outwards from the tub; a labyrinth part adopting a labyrinth structure and for arranging ribs lower than the packing water-sealing part between an tub cover and the upper end part of the drum at an inner side of the packing water-sealing part; and a hopper serving as a heightened drum and arranged integrally with the tub cover for retaining water whose water level is higher than a water level at the upper end of the drum.Type: ApplicationFiled: February 27, 2017Publication date: November 15, 2018Inventors: Takaaki YONEZAWA, Tomonari KAWAGUCHI, Hiroki SATO, Yoshikazu BAMBA, Takashi ONISHI, Wataru NAKAGAWA
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Publication number: 20180230636Abstract: A washing machine is provided. The washing machine includes an input shaft, configured to supply a rotary power to a rotation part for rotating washings; a motor, configured to rotate in a forward direction and backward direction and served as a power source of the rotation part; and a transmission arranged between an output shaft of the motor and the input shaft of the rotation part. The transmission includes a transformable driving side pulley unit disposed on the output shaft; a transformable driven side pulley unit disposed on the input shaft; and a driving belt for transferring power between the pulley unit and the driven side pulley units. The driving side pulley unit/driven side pulley unit is directly installed on the output shaft/input shaft by locating each end of the output shaft/input shaft at a movable pulley and a fixed pulley respectively, so that the driving side pulley unit/driven side pulley unit rotates integrally with the output shaft/input shaft.Type: ApplicationFiled: August 17, 2016Publication date: August 16, 2018Applicants: Qingdao Haier Washing Machine Co., Ltd., Aqua Co., Ltd.Inventors: Takashi Onishi, Yoshikazu Bamba, Takaaki Yonezawa, Katsumi Oe
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Publication number: 20180216275Abstract: A washing machine is provided. The washing machine adopts an induction motor to achieve efficient operation as that achieved by using a frequency converter. The washing machine includes: an input shaft configured to supply rotation power to a rotation part that rotates washings; an induction motor, configured to rotate in a forward direction and a backward direction and served as a power source of the rotation part; a transmission-arranged between an output shaft of the induction motor and the input shaft of the rotation part. The transmission is configured to change speed of the induction motor by decreasing a reduction ratio along with startup of the induction motor.Type: ApplicationFiled: August 8, 2016Publication date: August 2, 2018Applicants: Qingdao Haier Washing Machine Co., Ltd., AQUA CO., LTD.Inventors: Takashi Onishi, Yoshikazu Bamba, Takaaki Yonezawa, Katsumi Oe
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Publication number: 20180135216Abstract: A washing machine, which can simply and reliably remove stains on an outer circumferential surface of a washing drum forming a dewatering drum and greatly increase the assembling efficiency and the space efficiency by reducing common used components The washing machine includes: a closed bottomed cylindrical first washing drum forming a housing of a washing machine body and having an upper opening; a closed bottomed cylindrical second washing drum disposed in a specified distance from an inner circumferential surface of the first washing drum and inside the first washing drum in a freely rotating manner and serving as a dewatering drum; a circular plate portion having stirring wings extending radially outwardly of the second washing drum and integrally formed with the second washing drum; and an electric motor driving the second washing drum and the circular plate portion to rotate together.Type: ApplicationFiled: May 25, 2016Publication date: May 17, 2018Inventors: Takaaki YONEZAWA, Yoshikazu BANBA, Katzumi OE, Takashi ONISHI
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Publication number: 20180073188Abstract: A washing machine, including: a washing and dewatering drum for containing washings; an impeller configured at a bottom of the washing and dewatering drum in a free rotation manner; a circulating water path formed on a side surface part of the washing and dewatering drum and configured to enable water delivered by rotation of the impeller to flow from bottom to top; and a filter unit mounted on the circulating water path and configured to suck from an inflow port the water returning into the washing and dewatering drum from the circulating water path and enable the water to flow through to collect lint and the like contained in the water.Type: ApplicationFiled: January 13, 2016Publication date: March 15, 2018Inventors: Takeshi KAWAKAMI, Yoshikazu BANBA, Katzumi OE, Takaaki YONEZAWA
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Publication number: 20180057989Abstract: A washing machine includes a washing machine body provided with a window portion at a front plate; an outer drum arranged in the washing machine body and having at least a transparent area formed by a transparent member at a portion corresponding to the window portion; a dewatering drum rotatably arranged in the outer drum; a motor configured to rotate to drive the dewatering drum; and a drum cleaning unit arranged between the outer drum and the dewatering drum and disposed at a position corresponding to the window portion and the transparent area and capable of abutting against an outer surface of the dewatering drum.Type: ApplicationFiled: December 18, 2015Publication date: March 1, 2018Inventors: Takashi ONISHI, Katsumi OE, Yoshikazu BAMBA, Kunioki HONDA, Takaaki YONEZAWA
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Publication number: 20170051448Abstract: A device and a washing machine are disclosed. The device includes: a main body mounted on an inner circumferential face of the washing tank; an intake port provided at a lower end portion of the main body; a waterway; and an exhaust port provided on a surface of an upper end portion of the main body. Water is guided through the waterway so as to be exhausted from the exhaust port and splashed onto laundry in the washing tank. The exhaust port is relatively long in a circumferential direction Y of the inner circumferential face, a top-to-bottom width of the exhaust port in the middle is narrower than that at both ends in the circumferential direction Y, and a groove on the surface of the main body is adjacently arranged on two outer sides of the exhaust port in the circumferential direction Y.Type: ApplicationFiled: December 31, 2014Publication date: February 23, 2017Inventors: Takeshi KAWAKAMI, Takashi ONISHI, Jungo KATSUKI, Katzumi OE, Takaaki YONEZAWA
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Publication number: 20170002493Abstract: Provided are an opening and closing structure, a component, and a washing machine. The opening and closing structure includes: a supporting body formed with an opening part; and the lid supported by the supporting body in a free rotation manner. An elastic deformation part forming a rotation center and a periphery of the lid has flexibility. One of the supporting body and the elastic deformation part is provided with a shaft forming the rotation center of the lid, and the other is provided with a hole insertable by the shaft. One of the supporting body and the elastic deformation part is provided with a pin, and the other is provided with a recess receivable to the pin with a clearance during opening and closing of the lid. The recess gradually becomes shallower as the lid goes from an open position to an opposite side of a closed position.Type: ApplicationFiled: December 31, 2014Publication date: January 5, 2017Applicant: HAIER ASIA INTERNATIONAL CO., LTD.Inventors: Jungo KATSUKI, Takeshi KAWAKAMI, Katzumi OE, Takaaki YONEZAWA
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Patent number: 6627073Abstract: The present invention is directed to a new water treatment device comprising an electrolytic tank to put water in, an electrode provided in the electrolytic tank, a water treating path for pouring, from a pool storing water, the water into the electrolytic tank and returning to the pool the water in the electrolytic tank, a residual chlorine sensor for measuring the residual chlorine concentration of the water, and a circulating pump provided on the downstream side of the electrolytic tank on the water treating path in order to circulate the water, and capable of simply and efficiently sterilizing water stored in pools of various sizes from a swimming pool to a home bathtub.Type: GrantFiled: December 13, 2000Date of Patent: September 30, 2003Assignee: Sanyo Electric Co, Ltd.Inventors: Tatsuya Hirota, Yoshihiro Inamoto, Kiyokazu Fujikawa, Yozo Kawamura, Minoru Nakanishi, Minoru Kishi, Takaaki Yonezawa, Tamotsu Kawamura, Kazuhiro Yamamoto, Yasuhiko Shimizu, Yasuhito Kondo
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Patent number: 6627053Abstract: The present invention is directed to a new water treatment device comprising an electrolytic tank to put water in, an electrode provided in the electrolytic tank, a water treating path for pouring water in a pool and returning to the pool the water in the electrolytic tank, a residual chlorine sensor for measuring the residual chlorine concentration of water, and control means for controlling the energization of the electrode on the basis of the measured value by the residual chlorine sensor, and capable of simply and efficiently sterilizing water stored in pools of various sizes from a swimming pool to a home bathtub.Type: GrantFiled: December 12, 2000Date of Patent: September 30, 2003Assignee: Sanyo Electric Co., Ltd.Inventors: Tatsuya Hirota, Yoshihiro Inamoto, Kiyokazu Fujikawa, Yozo Kawamura, Minoru Nakanishi, Minoru Kishi, Takaaki Yonezawa, Tamotsu Kawamura, Kazuhiro Yamamoto, Yasuhiko Shimizu, Yasuhito Kondo
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Publication number: 20010010296Abstract: The present invention is directed to a new water treatment device comprising an electrolytic tank to put water in, an electrode provided in the electrolytic tank, a water treating path for pouring, from a pool storing water, the water into the electrolytic tank and returning to the pool the water in the electrolytic tank, a residual chlorine sensor for measuring the residual chlorine concentration of the water, and a circulating pump provided on the downstream side of the electrolytic tank on the water treating path in order to circulate the water, and capable of simply and efficiently sterilizing water stored in pools of various sizes from a swimming pool to a home bathtub.Type: ApplicationFiled: December 13, 2000Publication date: August 2, 2001Inventors: Tatsuya Hirota, Yoshihiro Inamoto, Kiyokazu Fujikawa, Yozo Kawamura, Minoru Nakanishi, Minoru Kishi, Takaaki Yonezawa, Tamotsu Kawamura, Kazuhiro Yamamoto, Yasuhiko Shimizu, Yasuhito Kondo
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Publication number: 20010004962Abstract: The present invention is directed to a new water treatment device comprising an electrolytic tank to put water in, an electrode provided in the electrolytic tank, a water treating path for pouring water in a pool and returning to the pool the water in the electrolytic tank, a residual chlorine sensor for measuring the residual chlorine concentration of water, and control means for controlling the energization of the electrode on the basis of the measured value by the residual chlorine sensor, and capable of simply and efficiently sterilizing water stored in pools of various sizes from a swimming pool to a home bathtub.Type: ApplicationFiled: December 12, 2000Publication date: June 28, 2001Inventors: Tatsuya Hirota, Yoshihiro Inamoto, Kiyokazu Fujikawa, Yozo Kawamura, Minoru Nakanishi, Minoru Kishi, Takaaki Yonezawa, Tamotsu Kawamura, Kazuhiro Yamamoto, Yasuhiko Shimizu, Yasuhito Kondo
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Patent number: 5893280Abstract: By rotating a drum at a low speed, the laundry is redistributed so that the eccentric load due to the laundry comes at a position opposing a balancing chamber. Then, while the drum is rotated at a middle speed, a balancing-water supply valve is opened to supply water from a balancing-water nozzle into a water-guiding chamber provided on the back of the drum. The water supplied flows into the balancing chamber, thus increasing the weight of the balancing chamber. The water supply is continued until the magnitude of the eccentric load of the drum holding the laundry and the water becomes smaller than a predetermined value. After an adequate amount of water is supplied, the total eccentric load is so small that the abnormal vibration does not occur even when the drum is rotated at a high speed for extraction.Type: GrantFiled: December 4, 1997Date of Patent: April 13, 1999Assignee: Sanyo Electric Co., Ltd.Inventors: Kunioki Honda, Mitsunori Shinmura, Tetsuo Harada, Takaaki Yonezawa