Patents by Inventor Akihiko Inada
Akihiko Inada 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: 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: 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: 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
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Patent number: 6584040Abstract: To provide an electronic timepiece enabling reliable detection of a state of rotation of an indication wheel such as a date dial. An ultrasonic motor 1130 has an ultrasonic rotor pinion 1134b. A date dial 1120 is disposed on a main plate 1102 in such a way as to rotate relative thereto. The ultrasonic rotor pinion 1134b is meshed with an intermediate date driving gear wheel 1142a. A date driving wheel 1150 is rotatably disposed on the main plate 1102. A date driving gear wheel 1150b is meshed with an intermediate date driving pinion 1142b. A date driving gear portion 1150b is meshed with a dial gear portion 1120a. A contact point spring 1160 is disposed on a spring guiding portion 1150d. The contact point spring 1160 rotates integrally with the date driving wheel 1150 through the rotation of the date driving wheel 1150. The state of rotation of the date driving wheel 1150 can be detected by contact of the contact point spring 1160 with the contact point pattern 1174.Type: GrantFiled: May 30, 2000Date of Patent: June 24, 2003Assignee: Seiko Instruments Inc.Inventors: Kenichi Nakajima, Takayuki Satodate, Akihiro Matouge, Akihiko Inada, Mitsuru Ishii, Yoshio Koyama, Shigeo Suzuki, Masayuki Kawata, Yuko Sasaki, Eriko Takakuwa
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Patent number: 6582118Abstract: An electronic timepiece has a wheel train mounted for undergoing rotation and a transmission wheel for undergoing rotation in accordance with rotation of the wheel train. A contact point spring is connected to the transmission wheel for rotation therewith. The contact point spring extends substantially linearly through a rotational center of the transmission wheel. First and second detection patterns contact the contact point spring during rotation of the transmission wheel to generate a rotational position detecting signal corresponding to a rotational position of the transmission wheel. The first and second detection patterns are disposed at an angle of substantially 180 degree relative to the rotational center of the transmission wheel.Type: GrantFiled: May 30, 2000Date of Patent: June 24, 2003Assignee: Seiko Instruments Inc.Inventors: Kenichi Nakajima, Takayuki Satodate, Akihiro Matouge, Akihiko Inada, Mitsuru Ishii, Yoshio Koyama, Shigeo Suzuki, Masayuki Kawata, Yuko Sasaki, Eriko Takakuwa
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Patent number: 6088300Abstract: A calendar electronic timepiece comprises a signal generating circuit for generating a date signal, a driving circuit for outputting a driving signal in accordance with the date signal generated by the signal generating circuit, and an ultrasonic motor driven by the driving signal outputted by the driving circuit. The ultrasonic motor is comprised of a piezoelectric vibrator having an electrode pattern and being driven by the driving signal outputted from the driving circuit to undergo expansion and contraction movement, a vibrating member connected to the piezoelectric vibrator and vibrationally driven by expansion and contraction movement of the piezoelectric vibrator, and a date dial disposed on the vibrating member to be frictionally driven by expansion and contraction movement of the piezoelectric vibrator.Type: GrantFiled: April 24, 1998Date of Patent: July 11, 2000Assignee: Seiko Instruments Inc.Inventors: Kenichi Nakajima, Takayuki Satodate, Akihiro Matouge, Akihiko Inada, Mitsuru Ishii, Yoshio Koyama, Shigeo Suzuki, Masayuki Kawata, Yuko Sasaki, Eriko Takakuwa
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Patent number: 6088302Abstract: To provide an electronic timepiece enabling reliable detection of a state of rotation of an indication wheel such as a date dial.An ultrasonic motor 1130 has an ultrasonic rotor pinion 1134b. A date dial 1120 is disposed on a main plate 1102 in such a way as to rotate relative thereto. The ultrasonic rotor pinion 1134b is meshed with an intermediate date driving gear wheel 1142a. A date driving wheel 1150 is rotatably disposed on the main plate 1102. A date driving gear wheel 1150b is meshed with an intermediate date driving pinion 1142b. A date driving gear portion 1150b is meshed with a dial gear portion 1120a. A contact point spring 1160 is disposed on a spring guiding portion 1150d. The contact point spring 1160 rotates integrally with the date driving wheel 1150 through the rotation of the date driving wheel 1150. The state of rotation of the date driving wheel 1150 can be detected by contact of the contact point spring 1160 with the contact point pattern 1174.Type: GrantFiled: April 24, 1998Date of Patent: July 11, 2000Assignee: Seiko Instruments Inc.Inventors: Kenichi Nakajima, Takayuki Satodate, Akihiro Matouge, Akihiko Inada, Mitsuru Ishii, Yoshio Koyama, Shigeo Suzuki, Masayuki Kawata, Yuko Sasaki, Eriko Takakuwa