Patents by Inventor Tetsuji Kawazu
Tetsuji Kawazu 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: 9217440Abstract: A ceiling fan includes a connecting portion fixed to a ceiling, an electric motor having a rotation shaft disposed on a lower portion of the connecting portion, a temperature detector provided on a lower portion of the electric motor for detecting a peripheral temperature, and a controller for estimating a room temperature based on the temperature detected by the temperature detector and driving the electric motor according to the estimated room temperature.Type: GrantFiled: January 21, 2010Date of Patent: December 22, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Kazuyuki Kobayashi, Shigeo Itou, Hitoshi Nakamichi, Hiroyuki Kuramochi, Tetsuji Kawazu
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Patent number: 9039394Abstract: A ceiling fan includes a suspending part fixed to a ceiling and a ceiling fan body suspended via the suspending part. The ceiling fan body has a plurality of horizontally-provided blades, a motor that rotates the blades, a shaft protruding from an upper side of the motor, and a joint part that is fixed to an upper side of the shaft and is connected to the suspending part. The joint part is detachable from the suspending part and is provided with a suspension detecting part extending from the joint part to the suspending part. The suspension detecting part detecting an energized state between the suspending part and the joint part.Type: GrantFiled: May 18, 2011Date of Patent: May 26, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Kiyohiko Iwamoto, Tetsuji Kawazu
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Patent number: 8827658Abstract: A ceiling fan includes a motor which rotates a plurality of blades, a shaft projecting from the motor, a pipe connected to an upper end of the shaft and which hangs from a ceiling surface, and a connecting rod for connecting the pipe and the shaft with each other via through holes formed in the pipe and the shaft, respectively. The ceiling fan also includes a displacement-correspondence tool which is displaced or which detects a displacement amount in correspondence with a relative positional displacement amount between the shaft and the pipe, and a power source control tool which controls energization to the motor in accordance with the displacement of the displacement-correspondence tool or the detected displacement amount.Type: GrantFiled: February 27, 2009Date of Patent: September 9, 2014Assignee: Panasonic CorporationInventors: Kiminobu Yamamoto, Tetsuji Kawazu, Hiroshi Yoshikawa, Kiyohiko Iwamoto
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Patent number: 8602725Abstract: A configuration including outer-rotation motor portion (4) including stator (2) with a center through which fixed axis (1) passes, and rotor (3) pivotally supported capable of rotating around stator (2); a plurality of blade plates (5) radially arranged on rotor (3); support base (6) having fixed axis (1) in a center thereof and located in a lower part of stator (2); angle changing unit (7) provided on support base (6); and a plurality of stationary blade plates (9) being detachably placed on stationary blade holders provided on angle changing unit (7). With the configuration in which an elevation/depression angle of stationary blade plates (9) is adjustable by at least one stationary blade driving motor (10) that drives angle changing unit (7), a structure is simplified.Type: GrantFiled: April 13, 2009Date of Patent: December 10, 2013Assignee: Panasonic CorporationInventors: Shigeo Itou, Tetsuji Kawazu
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Publication number: 20130045103Abstract: A ceiling fan includes a suspending part fixed to a ceiling and a ceiling fan body suspended via the suspending part. The ceiling fan body has a plurality of horizontally-provided blades, a motor that rotates the blades, a shaft protruding from an upper side of the motor, and a joint part that is fixed to an upper side of the shaft and is connected to the suspending part. The joint part is detachable from the suspending part and is provided with a suspension detecting part extending from the joint part to the suspending part. The suspension detecting part detecting an energized state between the suspending part and the joint part.Type: ApplicationFiled: May 18, 2011Publication date: February 21, 2013Applicant: PANASONIC CORPORATIONInventors: Kiyohiko Iwamoto, Tetsuji Kawazu
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Patent number: 8328521Abstract: A ceiling fan comprising a disc-like stator provided with a fixed shaft at the center, an annular rotor disposed in proximity to the periphery of the stator, a supporting frame fixed to the rotor and rotatably supported by the fixed shaft; a fan blade fixed to the supporting frame; and a retaining member having one end fixed to the supporting frame together with the fan blade and the other end coupled to the fan blade, wherein the fan blade comprises a root portion fixed to the supporting frame, a blade portion coupled with the retaining member, and an offset portion formed by bending between the root portion and the blade portion, thereby preventing the fan blade from being damaged easily even when it is impressed with a load and ensuring the safety even if the fan blade is broken since the blade portion is held coupled to the rotor side.Type: GrantFiled: October 26, 2011Date of Patent: December 11, 2012Assignee: Panasonic CorporationInventors: Shigeo Itou, Kiminobu Yamamoto, Tetsuji Kawazu
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Patent number: 8241017Abstract: A ceiling fan includes a motor for rotating multiple blades. This motor includes a hollow shaft that is disposed upright on the center of a disc-like stator, and a rotor around an outer periphery of the stator. The rotor integrally rotates with the blades. This motor further includes a cylindrical bearing housing, and a pair of ball bearings including an upper ball bearing and a lower ball bearing housed in this bearing housing. This bearing housing has a base in its center. The upper ball bearing is disposed over the base, and the lower ball bearing is disposed under the base in this bearing housing. Both bearings are fixed onto the hollow shaft.Type: GrantFiled: September 26, 2007Date of Patent: August 14, 2012Assignee: Panasonic CorporationInventors: Kiminobu Yamamoto, Tetsuji Kawazu, Hiroshi Yoshikawa, Kiyohiko Iwamoto, Yoshiki Tanimura
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Publication number: 20120039717Abstract: A ceiling fan comprising a disc-like stator provided with a fixed shaft at the center, an annular rotor disposed in proximity to the periphery of the stator, a supporting frame fixed to the rotor and rotatably supported by the fixed shaft; a fan blade fixed to the supporting frame; and a retaining member having one end fixed to the supporting frame together with the fan blade and the other end coupled to the fan blade, wherein the fan blade comprises a root portion fixed to the supporting frame, a blade portion coupled with the retaining member, and an offset portion formed by bending between the root portion and the blade portion, thereby preventing the fan blade from being damaged easily even when it is impressed with a load and ensuring the safety even if the fan blade is broken since the blade portion is held coupled to the rotor side.Type: ApplicationFiled: October 26, 2011Publication date: February 16, 2012Applicant: PANASONIC CORPORATIONInventors: SHIGEO ITOU, KIMINOBU YAMAMOTO, TETSUJI KAWAZU
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Patent number: 8070447Abstract: A ceiling fan comprising a disc-like stator provided with a fixed shaft at the center, an annular rotor disposed in proximity to the periphery of the stator, a supporting frame fixed to the rotor and rotatably supported by the fixed shaft; a fan blade fixed to the supporting frame; and a retaining member having one end fixed to the supporting frame together with the fan blade and the other end coupled to the fan blade, wherein the fan blade comprises a root portion fixed to the supporting frame, a blade portion coupled with the retaining member, and an offset portion formed by bending between the root portion and the blade portion, thereby preventing the fan blade from being damaged easily even when it is impressed with a load and ensuring the safety even if the fan blade is broken since the blade portion is held coupled to the rotor side.Type: GrantFiled: January 21, 2010Date of Patent: December 6, 2011Assignee: Panasonic CorporationInventors: Shigeo Itou, Kiminobu Yamamoto, Tetsuji Kawazu
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Publication number: 20110274561Abstract: A ceiling fan includes a connecting portion fixed to a ceiling, an electric motor having a rotation shaft disposed on a lower portion of the connecting portion, a temperature detector provided on a lower portion of the electric motor for detecting a peripheral temperature, and a controller for estimating a room temperature based on the temperature detected by the temperature detector and driving the electric motor according to the estimated room temperature.Type: ApplicationFiled: January 21, 2010Publication date: November 10, 2011Applicant: PANASONIC CORPORATIONInventors: Kazuyuki Kobayashi, Shigeo Itou, Hitoshi Nakamichi, Hiroyuki Kuramochi, Tetsuji Kawazu
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Publication number: 20110052411Abstract: A ceiling fan including a connecting fitting fixed to a ceiling, and a ceiling fan main body suspended from the connecting fitting via a suspension device. The ceiling fan main body includes a motor for rotating a plurality of blades attached in a horizontal direction, a shaft protruding to an upper part of the motor, and a joint portion fixed on an upper part of the shaft. The suspension device includes a first connecting portion capable of being movably mounted on the connecting fitting, and a second connecting portion located in a lower part of the first connecting portion. The joint portion is movably mounted on the second connecting portion.Type: ApplicationFiled: May 14, 2009Publication date: March 3, 2011Applicant: Panasonic CorporationInventors: Kiminobu Yamamoto, Tetsuji Kawazu, Hiroshi Yoshikawa, Kiyohiko Iwamoto
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Publication number: 20110020135Abstract: A configuration including outer-rotation motor portion (4) including stator (2) with a center through which fixed axis (1) passes, and rotor (3) pivotally supported capable of rotating around stator (2); a plurality of blade plates (5) radially arranged on rotor (3); support base (6) having fixed axis (1) in a center thereof and located in a lower part of stator (2); angle changing unit (7) provided on support base (6); and a plurality of stationary blade plates (9) being detachably placed on stationary blade holders provided on angle changing unit (7). With the configuration in which an elevation/depression angle of stationary blade plates (9) is adjustable by at least one stationary blade driving motor (10) that drives angle changing unit (7), a structure is simplified.Type: ApplicationFiled: April 13, 2009Publication date: January 27, 2011Applicant: PANASONIC CORPORATIONInventors: Shigeo Itou, Tetsuji Kawazu
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Publication number: 20110002783Abstract: A ceiling fan comprising a motor which rotates a plurality of blades provided in a horizontal direction, a shaft projecting from an upper portion of the motor, a pipe which is connected to an upper end of the shaft and which hangs from a ceiling surface, a connecting rod for connecting the pipe and the shaft with each other via through holes formed in the pipe and the shaft, respectively, a female screw which is threadedly engaged with the connecting rod, a displacement-correspondence tool which is displaced or which detects a displacement amount in correspondence with a relative positional displacement amount between the shaft and the pipe, and a power source control tool which controls energization to the motor in accordance with the displacement of the displacement-correspondence tool or the detected displacement amount.Type: ApplicationFiled: February 27, 2009Publication date: January 6, 2011Applicant: PANASONIC CORPORATIONInventors: Kiminobu Yamamoto, Tetsuji Kawazu, Hiroshi Yoshikawa, Kiyohiko Iwamoto
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Publication number: 20100129225Abstract: A ceiling fan comprising a disc-like stator provided with a fixed shaft at the center, an annular rotor disposed in proximity to the periphery of the stator, a supporting frame fixed to the rotor and rotatably supported by the fixed shaft; a fan blade fixed to the supporting frame; and a retaining member having one end fixed to the supporting frame together with the fan blade and the other end coupled to the fan blade, wherein the fan blade comprises a root portion fixed to the supporting frame, a blade portion coupled with the retaining member, and an offset portion formed by bending between the root portion and the blade portion, thereby preventing the fan blade from being damaged easily even when it is impressed with a load and ensuring the safety even if the fan blade is broken since the blade portion is held coupled to the rotor side.Type: ApplicationFiled: January 21, 2010Publication date: May 27, 2010Applicant: PANASONIC CORPORATIONInventors: SHIGEO ITOU, KIMINOBU YAMAMOTO, TETSUJI KAWAZU
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Publication number: 20100040494Abstract: A ceiling fan includes a motor for rotating multiple blades. This motor includes a hollow shaft that is disposed upright on the center of a disc-like stator, and a rotor around an outer periphery of the stator. The rotor integrally rotates with the blades. This motor further includes a cylindrical bearing housing, and a pair of upper ball bearing and a lower ball bearing housed in this bearing housing. This bearing housing has a base in its center. The upper ball bearing is disposed over the base, and the lower ball bearing is disposed under the base in this bearing housing. Both bearings are fixed onto the hollow shaft.Type: ApplicationFiled: September 26, 2007Publication date: February 18, 2010Inventors: Kiminobu Yamamoto, Tetsuji Kawazu, Hiroshi Yoshikawa, Kiyohiko Iwamoto, Yoshiki Tanimura