Patents by Inventor Terukazu Matsugi
Terukazu Matsugi 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: 9279233Abstract: A shovel includes a turning drive unit. The turning drive unit includes a turning electric motor, a turning speed reducer configured to transmit the rotational driving force of the turning electric motor to a turnable body, a brake unit configured to maintain the turnable body in a state where the turning of the turnable body is stopped, a case forming a space in which the turning speed reducer and the brake unit are lubricated with lubricant oil and accommodated, a collar fixed around an output shaft of the turning speed reducer so as to rotate with the output shaft and covering at least a part of a relief part formed at a time of forming splines on the output shaft, and a sealing member provided between the collar and the case and hermetically sealing the lubricant oil inside the space.Type: GrantFiled: March 19, 2014Date of Patent: March 8, 2016Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.Inventors: Takeshi Okada, Akihiko Inada, Terukazu Matsugi, Kazunori Hiranuma
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Patent number: 9139978Abstract: A shovel includes a turning drive unit. The turning drive unit includes a turning electric motor, a turning speed reducer configured to transmit the rotational driving force of the turning electric motor to a turnable body, a brake unit configured to maintain the turnable body in a state where the turning of the turnable body is stopped, and a case forming a space in which the turning speed reducer and the brake unit are lubricated with lubricant oil and accommodated. A recess is formed in part of the case that forms a bottom surface of the space.Type: GrantFiled: March 19, 2014Date of Patent: September 22, 2015Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.Inventors: Takeshi Okada, Akihiko Inada, Terukazu Matsugi, Kazunori Hiranuma
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Patent number: 9062743Abstract: A shovel includes a turning drive unit. The turning drive unit includes a turning electric motor, a turning speed reducer configured to transmit the rotational driving force of the turning electric motor to a turnable body, and a brake unit configured to maintain the turnable body in a state where the turning of the turnable body is stopped. The turning speed reducer includes a planetary speed reducer including a planetary carrier. The planetary carrier includes an output shaft part that forms an output shaft and a carrier part that holds a planetary gear in such a manner as to allow the rotation of the planetary gear. The output shaft part and the carrier part are fastened by a fastening member.Type: GrantFiled: March 19, 2014Date of Patent: June 23, 2015Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.Inventors: Takeshi Okada, Akihiko Inada, Terukazu Matsugi, Kazunori Hiranuma
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Publication number: 20140296016Abstract: A shovel includes a turning drive unit. The turning drive unit includes a turning electric motor, a turning speed reducer configured to transmit the rotational driving force of the turning electric motor to a turnable body, a brake unit configured to maintain the turnable body in a state where the turning of the turnable body is stopped, a case forming a space in which the turning speed reducer and the brake unit are lubricated with lubricant oil and accommodated, a collar fixed around an output shaft of the turning speed reducer so as to rotate with the output shaft and covering at least a part of a relief part formed at a time of forming splines on the output shaft, and a sealing member provided between the collar and the case and hermetically sealing the lubricant oil inside the space.Type: ApplicationFiled: March 19, 2014Publication date: October 2, 2014Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.Inventors: Takeshi OKADA, Akihiko Inada, Terukazu Matsugi, Kazunori Hiranuma
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Publication number: 20140296015Abstract: A shovel includes a turning drive unit. The turning drive unit includes a turning electric motor, a turning speed reducer configured to transmit the rotational driving force of the turning electric motor to a turnable body, and a brake unit configured to maintain the turnable body in a state where the turning of the turnable body is stopped. The turning speed reducer includes a planetary speed reducer including a planetary carrier. The planetary carrier includes an output shaft part that forms an output shaft and a carrier part that holds a planetary gear in such a manner as to allow the rotation of the planetary gear. The output shaft part and the carrier part are fastened by a fastening member.Type: ApplicationFiled: March 19, 2014Publication date: October 2, 2014Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.Inventors: Takeshi OKADA, Akihiko Inada, Terukazu Matsugi, Kazunori Hiranuma
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Publication number: 20140296017Abstract: A shovel includes a turning drive unit. The turning drive unit includes a turning electric motor, a turning speed reducer configured to transmit the rotational driving force of the turning electric motor to a turnable body, a brake unit configured to maintain the turnable body in a state where the turning of the turnable body is stopped, and a case forming a space in which the turning speed reducer and the brake unit are lubricated with lubricant oil and accommodated. A recess is formed in part of the case that forms a bottom surface of the space.Type: ApplicationFiled: March 19, 2014Publication date: October 2, 2014Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.Inventors: Takeshi OKADA, Akihiko Inada, Terukazu Matsugi, Kazunori Hiranuma