Patents by Inventor Hiromitsu Hamazaki
Hiromitsu Hamazaki 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: 10233981Abstract: A clutch unit includes a lever-side clutch portion for controlling transmission and interruption of rotational torque to an output side through lever operation, and a brake-side clutch portion for transmitting torque input from the lever-side clutch portion to the output side and for interrupting torque reversely input from the output side. The lever-side clutch portion has an outer centering spring provided between a lever-side outer ring to be rotated through the lever operation and a cover restricted in rotation, for accumulating an elastic force obtained by torque input from the lever-side outer ring and for restoring the lever-side outer ring to a neutral state with the accumulated elastic force through releasing of the torque input from the lever-side outer ring.Type: GrantFiled: May 8, 2015Date of Patent: March 19, 2019Assignee: NTN CORPORATIONInventors: Koji Sato, Takahide Saito, Masahiro Kawai, Kouji Isoda, Naochika Kubota, Yumiko Mineno, Hiromitsu Hamazaki
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Patent number: 9618062Abstract: A clutch unit includes a lever-side clutch portion for controlling transmission and interruption of rotational torque to an output side through lever operation, and a brake-side clutch portion for transmitting torque input from the lever-side clutch portion to the output side and for interrupting torque reversely input from the output side. The lever-side clutch portion has an outer centering spring provided between a lever-side outer ring to be rotated through the lever operation and a cover restricted in rotation, for accumulating an elastic force obtained by torque input from the lever-side outer ring and for restoring the lever-side outer ring to a neutral state with the accumulated elastic force through releasing of the torque input from the lever-side outer ring.Type: GrantFiled: May 8, 2015Date of Patent: April 11, 2017Assignee: NTN CORPORATIONInventors: Koji Sato, Takahide Saito, Masahiro Kawai, Kouji Isoda, Naochika Kubota, Yumiko Mineno, Hiromitsu Hamazaki
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Patent number: 9574623Abstract: A clutch unit includes a lever-side clutch portion for controlling transmission and interruption of rotational torque to an output side through lever operation, and a brake-side clutch portion for transmitting torque input from the lever-side clutch portion to the output side and for interrupting torque reversely input from the output side. The lever-side clutch portion has an outer centering spring provided between a lever-side outer ring to be rotated through the lever operation and a cover restricted in rotation, for accumulating an elastic force obtained by torque input from the lever-side outer ring and for restoring the lever-side outer ring to a neutral state with the accumulated elastic force through releasing of the torque input from the lever-side outer ring.Type: GrantFiled: May 8, 2015Date of Patent: February 21, 2017Assignee: NTN CORPORATIONInventors: Koji Sato, Takahide Saito, Masahiro Kawai, Kouji Isoda, Naochika Kubota, Yumiko Mineno, Hiromitsu Hamazaki
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Publication number: 20150300435Abstract: A clutch unit includes a lever-side clutch portion for controlling transmission and interruption of rotational torque to an output side through lever operation, and a brake-side clutch portion for transmitting torque input from the lever-side clutch portion to the output side and for interrupting torque reversely input from the output side. The lever-side clutch portion has an outer centering spring provided between a lever-side outer ring to be rotated through the lever operation and a cover restricted in rotation, for accumulating an elastic force obtained by torque input from the lever-side outer ring and for restoring the lever-side outer ring to a neutral state with the accumulated elastic force through releasing of the torque input from the lever-side outer ring.Type: ApplicationFiled: May 8, 2015Publication date: October 22, 2015Applicant: NTN CORPORATIONInventors: Koji SATO, Takahide SAITO, Masahiro KAWAI, Kouji ISODA, Naochika KUBOTA, Yumiko MINENO, Hiromitsu HAMAZAKI
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Publication number: 20150240897Abstract: A clutch unit includes a lever-side clutch portion for controlling transmission and interruption of rotational torque to an output side through lever operation, and a brake-side clutch portion for transmitting torque input from the lever-side clutch portion to the output side and for interrupting torque reversely input from the output side. The lever-side clutch portion has an outer centering spring provided between a lever-side outer ring to be rotated through the lever operation and a cover restricted in rotation, for accumulating an elastic force obtained by torque input from the lever-side outer ring and for restoring the lever-side outer ring to a neutral state with the accumulated elastic force through releasing of the torque input from the lever-side outer ring.Type: ApplicationFiled: May 8, 2015Publication date: August 27, 2015Applicant: NTN CORPORATIONInventors: Koji SATO, Takahide SAITO, Masahiro KAWAI, Kouji ISODA, Naochika KUBOTA, Yumiko MINENO, Hiromitsu HAMAZAKI
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Publication number: 20150240898Abstract: A clutch unit includes a lever-side clutch portion for controlling transmission and interruption of rotational torque to an output side through lever operation, and a brake-side clutch portion for transmitting torque input from the lever-side clutch portion to the output side and for interrupting torque reversely input from the output side. The lever-side clutch portion has an outer centering spring provided between a lever-side outer ring to be rotated through the lever operation and a cover restricted in rotation, for accumulating an elastic force obtained by torque input from the lever-side outer ring and for restoring the lever-side outer ring to a neutral state with the accumulated elastic force through releasing of the torque input from the lever-side outer ring.Type: ApplicationFiled: May 8, 2015Publication date: August 27, 2015Applicant: NTN CORPORATIONInventors: Koji SATO, Takahide SAITO, Masahiro KAWAI, Kouji ISODA, Naochika KUBOTA, Yumiko MINENO, Hiromitsu HAMAZAKI
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Publication number: 20150240896Abstract: A clutch unit includes a lever-side clutch portion for controlling transmission and interruption of rotational torque to an output side through lever operation, and a brake-side clutch portion for transmitting torque input from the lever-side clutch portion to the output side and for interrupting torque reversely input from the output side. The lever-side clutch portion has an outer centering spring provided between a lever-side outer ring to be rotated through the lever operation and a cover restricted in rotation, for accumulating an elastic force obtained by torque input from the lever-side outer ring and for restoring the lever-side outer ring to a neutral state with the accumulated elastic force through releasing of the torque input from the lever-side outer ring.Type: ApplicationFiled: May 8, 2015Publication date: August 27, 2015Applicant: NTN CORPORATIONInventors: Koji SATO, Takahide SAITO, Masahiro KAWAI, Kouji ISODA, Naochika KUBOTA, Yumiko MINENO, Hiromitsu HAMAZAKI
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Patent number: 9074644Abstract: A clutch unit includes a lever-side clutch portion for controlling transmission and interruption of rotational torque to an output side through lever operation, and a brake-side clutch portion for transmitting torque input from the lever-side clutch portion to the output side and for interrupting torque reversely input from the output side. The lever-side clutch portion has an outer centering spring provided between a lever-side outer ring to be rotated through the lever operation and a cover restricted in rotation, for accumulating an elastic force obtained by torque input from the lever-side outer ring and for restoring the lever-side outer ring to a neutral state with the accumulated elastic force through releasing of the torque input from the lever-side outer ring.Type: GrantFiled: March 1, 2011Date of Patent: July 7, 2015Assignee: NTN CORPORATIONInventors: Koji Sato, Takahide Saito, Masahiro Kawai, Kouji Isoda, Naochika Kubota, Yumiko Mineno, Hiromitsu Hamazaki
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Publication number: 20120305359Abstract: Provided is a clutch unit, comprising: a lever-side clutch portion (11) for controlling transmission and interruption of rotational torque to an output side through lever operation; and a brake-side clutch portion (12) for transmitting torque input from the lever-side clutch portion (11) to the output side and for interrupting torque reversely input from the output side, wherein: the lever-side clutch portion (11) comprises an outer centering spring (19) provided between a lever-side outer ring (14) to be rotated through the lever operation and a cover (24) restricted in rotation, for accumulating an elastic force obtained by torque input from the lever-side outer ring (14) and for restoring the lever-side outer ring (14) to a neutral state with the accumulated elastic force through releasing of the torque input from the lever-side outer ring (14); the cover (24) comprises an inclined portion (24g) which abuts on the outer centering spring (19) and swells to the outer centering spring (19) side; and a roundedType: ApplicationFiled: March 1, 2011Publication date: December 6, 2012Inventors: Koji Sato, Takahide Saito, Masahiro Kawai, Kouji Isoda, Naochika Kubota, Yumiko Mineno, Hiromitsu Hamazaki