Patents by Inventor Naofumi Imai
Naofumi Imai 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: 10385952Abstract: A rotating cylinder device includes a cylindrical belt having an axis line, several plate-shaped parts, several link mechanisms, and a cylindrical casing. The plate-shaped parts are disposed outside the belt and arranged symmetrically across the axis line. The link mechanisms are pivotally connected to the respective plate-shaped parts and each have a moving protrusion. The moving protrusions are adapted to move along a first direction parallel to the axis line. The cylindrical casing is adapted to rotate about the axis line and is coupled to the moving protrusions. When the cylindrical casing rotates about the axis line, the moving protrusions are driven to move along the first direction, and the plate-shaped parts are driven by the link mechanisms to move along a second direction perpendicular to the axis line, to contract the belt.Type: GrantFiled: October 3, 2016Date of Patent: August 20, 2019Assignees: SINTAI OPTICAL (SHENZHEN) CO., LTD., ASIA OPTICAL INTERNATIONAL LTD.Inventors: Chikashi Tsuchiya, Naofumi Imai
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Patent number: 10165344Abstract: A headphone is provided. The headphone includes a housing and an speaker. The housing includes a first layer structure, a first receiving space, a first output path, a first trench and a sound output side. The speaker is located in the first receiving space, wherein the speaker includes a first speaker orientation, and the first speaker orientation corresponds to the first output path. The first output path includes the first trench, which is located at the first layer structure, extends around the speaker, and is connected to the sound output side.Type: GrantFiled: October 13, 2016Date of Patent: December 25, 2018Assignees: SINTAI OPTICAL (SHENZHEN) CO., LTD., ASIA OPTICAL INTERNATIONAL LTD.Inventors: Naofumi Imai, Takayuki Karasawa, Tomoya Takahashi
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Patent number: 10165351Abstract: A headphone is provided. The headphone includes a housing, a first speaker and a second speaker. The housing includes a sound output side, a first layer structure, a first output path, a first trench, a first recess, and a second recess. The first speaker is disposed in the first recess, wherein the first speaker includes a first speaker orientation, and the first speaker orientation corresponds to the first output path. The second speaker is disposed in the second recess. The first output path includes the first trench, which is located at the first layer structure, that extends around the first speaker, and is connected to the sound output side.Type: GrantFiled: October 13, 2016Date of Patent: December 25, 2018Assignees: SINTAI OPTICAL (SHENZHEN) CO., LTD., ASIA OPTICAL INTERNATIONAL LTD.Inventors: Naofumi Imai, Takayuki Karasawa, Tomoya Takahashi
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Patent number: 10080076Abstract: A headphone device includes a container and a first electrical connector. The container includes a first loudspeaker disposed in the container, a second loudspeaker disposed in the container, and a first cross-feed loudspeaker disposed in the container. The first electrical connector is disposed on the container, and is electrically connected to the first loudspeaker, the second loudspeaker and the first cross-feed loudspeaker.Type: GrantFiled: March 20, 2017Date of Patent: September 18, 2018Assignees: SINTAI OPTICAL (SHENZHEN) CO., LTD., ASIA OPTICAL CO., INC.Inventors: Takayuki Karasawa, Tomoya Takahashi, Masahiro Koike, Naofumi Imai
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Publication number: 20170366893Abstract: A headphone device includes a container and a first electrical connector. The container includes a first loudspeaker disposed in the container, a second loudspeaker disposed in the container, and a first cross-feed loudspeaker disposed in the container. The first electrical connector is disposed on the container, and is electrically connected to the first loudspeaker, the second loudspeaker and the first cross-feed loudspeaker.Type: ApplicationFiled: March 20, 2017Publication date: December 21, 2017Inventors: Takayuki Karasawa, Tomoya Takahashi, Masahiro Koike, Naofumi Imai
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Publication number: 20170214999Abstract: A headphone is provided. The headphone includes a housing, a first speaker and a second speaker. The housing includes a sound output side, a first layer structure, a first output path, a first trench, a first recess, and a second recess. The first speaker is disposed in the first recess, wherein the first speaker includes a first speaker orientation, and the first speaker orientation corresponds to the first output path. The second speaker is disposed in the second recess. The first output path includes the first trench, which is located at the first layer structure, that extends around the first speaker, and is connected to the sound output side.Type: ApplicationFiled: October 13, 2016Publication date: July 27, 2017Inventors: Naofumi Imai, Takayuki Karasawa, Tomoya Takahashi
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Publication number: 20170214993Abstract: A headphone is provided. The headphone includes a housing and an speaker. The housing includes a first layer structure, a first receiving space, a first output path, a first trench and a sound output side. The speaker is located in the first receiving space, wherein the speaker includes a first speaker orientation, and the first speaker orientation corresponds to the first output path. The first output path includes the first trench, which is located at the first layer structure, extends around the speaker, and is connected to the sound output side.Type: ApplicationFiled: October 13, 2016Publication date: July 27, 2017Inventors: Naofumi Imai, Takayuki Karasawa, Tomoya Takahashi
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Publication number: 20170184189Abstract: A rotating cylinder device includes a cylindrical belt having an axis line, several plate-shaped parts, several link mechanisms, and a cylindrical casing. The plate-shaped parts are disposed outside the belt and arranged symmetrically across the axis line. The link mechanisms are pivotally connected to the respective plate-shaped parts and each have a moving protrusion. The moving protrusions are adapted to move along a first direction parallel to the axis line. The cylindrical casing is adapted to rotate about the axis line and is coupled to the moving protrusions. When the cylindrical casing rotates about the axis line, the moving protrusions are driven to move along the first direction, and the plate-shaped parts are driven by the link mechanisms to move along a second direction perpendicular to the axis line, to contract the belt.Type: ApplicationFiled: October 3, 2016Publication date: June 29, 2017Inventors: Chikashi Tsuchiya, Naofumi Imai
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Patent number: 5805440Abstract: A power supply unit for an electronic device includes a power plug and an interconnection between the poser plug and the device. A power plug for an AC-DC adapter fits into a battery compartment of an electronic device instead of into a separate jack. The power supply unit includes an elastic cover that ensures a positive connection between the device and the power plug to prevent accidental disengagement of the power plug from the device. The power plug and battery compartment are configured so that an incorrect power plug cannot be connected by mistake. The configuration preferably includes a switch to signal the device that an AC-DC adapter is installed.Type: GrantFiled: September 26, 1996Date of Patent: September 8, 1998Assignee: Chinon Kabushiki KaishaInventors: Yoshihiro Maeshima, Naofumi Imai
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Patent number: D802139Type: GrantFiled: June 15, 2016Date of Patent: November 7, 2017Assignees: SINTAI OPTICAL (SHENZHEN) CO., LTD., ASIA OPTICAL INTERNATIONAL LTD.Inventors: Chikashi Tsuchiya, Naofumi Imai, I-Jen Lai