Patents by Inventor Arata Sakamoto
Arata Sakamoto 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).
-
Patent number: 9019625Abstract: A lens advancing device of the present invention includes an advancing ring holding the lens unit; a holder supporting the advancing ring; an operation unit; and a came surface formed on one of the advancing ring and the holder, and an abutting part formed on the other of the advancing ring and the holder and is engageable with the cam surface. The lens unit is disposed along an optical axis by rotating the advancing ring and thereby changing the engaging position between the cam surface and the abutting part. The lens advancing device further includes a pressing part retaining the elastic body be abutment to make the elastic body exert the elastic force upon the advancing ring and press the abutting part against the came surface. This reduces changes of resistance in rotational operation of the advancing ring between photographing modes, which makes the user feel less uncomfortable.Type: GrantFiled: June 21, 2012Date of Patent: April 28, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Kouichirou Matsuoka, Arata Sakamoto
-
Patent number: 8994268Abstract: A compact strobe device includes the following components: a flash discharge tube having an anode and a cathode; a conductive reflector storing a part of the flash discharge tube; a trigger coil having a hollow core, and a primary winding and a secondary winding around the core; and a conductor connecting the secondary winding of the trigger coil and the reflector. The trigger coil has an end of the flash discharge tube inserted into the core, and includes at an end thereof adjacent to the reflector, a secondary terminal connected to the secondary winding. The reflector has a bottom in contact with the outer peripheral surface of the flash discharge tube, the outer peripheral surface covering at least the region extending from the anode to the cathode. The conductor has a first contact portion in contact with the secondary terminal of the trigger coil, and a second contact portion in contact with the bottom of the reflector.Type: GrantFiled: August 6, 2012Date of Patent: March 31, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventor: Arata Sakamoto
-
Patent number: 8922120Abstract: A compact strobe device includes the following components: a flash discharge tube having an anode on one side thereof and a cathode on the other side thereof; a conductive reflector composing an external trigger electrode, the reflector being in contact with and storing a part of the flash discharge tube; a trigger coil having a primary winding and a secondary winding wound around a hollow core; and an elastic conductor connecting the secondary winding of the trigger coil and the reflector. The trigger coil has an end of the flash discharge tube inserted into the core, and includes, at the end thereof adjacent to the reflector, a secondary terminal connected to the secondary winding. The conductor elastically deforms to be in contact with the secondary terminal of the trigger coil and a lateral side of the reflector.Type: GrantFiled: August 6, 2012Date of Patent: December 30, 2014Assignee: Panasonic CorporationInventor: Arata Sakamoto
-
Publication number: 20140167596Abstract: A compact strobe device includes the following components: a flash discharge tube having an anode and a cathode; a conductive reflector storing a part of the flash discharge tube; a trigger coil having a hollow core, and a primary winding and a secondary winding around the core; and a conductor connecting the secondary winding of the trigger coil and the reflector. The trigger coil has an end of the flash discharge tube inserted into the core, and includes at an end thereof adjacent to the reflector, a secondary terminal connected to the secondary winding. The reflector has a bottom in contact with the outer peripheral surface of the flash discharge tube, the outer peripheral surface covering at least the region extending from the anode to the cathode. The conductor has a first contact portion in contact with the secondary terminal of the trigger coil, and a second contact portion in contact with the bottom of the reflector.Type: ApplicationFiled: August 6, 2012Publication date: June 19, 2014Applicant: PANASONIC CORPORATIONInventor: Arata Sakamoto
-
Publication number: 20140139099Abstract: A compact strobe device includes the following components: a flash discharge tube having an anode on one side thereof and a cathode on the other side thereof; a conductive reflector composing an external trigger electrode, the reflector being in contact with and storing a part of the flash discharge tube; a trigger coil having a primary winding and a secondary winding wound around a hollow core; and an elastic conductor connecting the secondary winding of the trigger coil and the reflector. The trigger coil has an end of the flash discharge tube inserted into the core, and includes, at the end thereof adjacent to the reflector, a secondary terminal connected to the secondary winding. The conductor elastically deforms to be in contact with the secondary terminal of the trigger coil and a lateral side of the reflector.Type: ApplicationFiled: August 6, 2012Publication date: May 22, 2014Applicant: PANASONIC CORPORATIONInventor: Arata Sakamoto
-
Publication number: 20140078599Abstract: A lens advancing device of the present invention includes an advancing ring holding the lens unit; a holder supporting the advancing ring; an operation unit; and a came surface formed on one of the advancing ring and the holder, and an abutting part formed on the other of the advancing ring and the holder and is engageble with the cam surface. The lens unit is disposed along an optical axis by rotating the advancing ring and thereby changing the engaging position between the cam surface and the abutting part. The lens advancing device further includes a pressing part retaining the elastic body be abutment to make the elastic body exert the elastic force upon the advancing ring and press the abutting part against the came surface. This reduces changes of resistance in rotational operation of the advancing ring between photographing modes, which makes the user feel less uncomfortable.Type: ApplicationFiled: June 21, 2012Publication date: March 20, 2014Applicant: PANASONIC CORPORATIONInventors: Kouichirou Matsuoka, Arata Sakamoto
-
Patent number: 8339051Abstract: The electronic flash unit disclosed comprises: a transformer (14) to vary voltages of a power supply; an accumulator (16) composed of a main capacitor (17) to charge an electric energy supplied from the transformer (14); a lamp unit (4) provided with a flashlamp (20), set inside of a reflector (19), that flashes by discharging of energy storages in the main capacitor (17) upon applying a voltage on a trigger terminal (21); and a trigger circuit (10) to generate the voltage to apply on the trigger terminal (21), wherein at least the lamp unit (4) is coated with an insulation material.Type: GrantFiled: March 12, 2007Date of Patent: December 25, 2012Assignee: Panasonic CorporationInventors: Hirohiko Ina, Arata Sakamoto, Shohei Uno, Toshinori Maki, Katsumi Horinishi, Naoyuki Furutsuka, Hajime Mitsui, Kazue Nakagawa, Katsuji Ishikawa, Hisashi Ogura, Mitsuo Fuke, Katsunori Kawabata, Takashi Umehara, Katsushi Sumisaki
-
Patent number: 7652434Abstract: The electronic flash unit disclosed comprises: a transformer (14) to vary voltages of a power supply; an accumulator (16) composed of a main capacitor (17) to charge an electric energy supplied from the transformer (14); a lamp unit (4) provided with a flashlamp (20), set inside of a reflector (19), that flashes by discharging of energy storages in the main capacitor (17) upon applying a voltage on a trigger terminal (21); and a trigger circuit (10) to generate the voltage to apply on the trigger terminal (21), wherein at least the lamp unit (4) is coated with an insulation material.Type: GrantFiled: November 28, 2002Date of Patent: January 26, 2010Assignee: Panasonic Photo & Lighting Co., Ltd.Inventors: Hirohiko Ina, Arata Sakamoto, Shohei Uno, Toshinori Maki, Katsumi Horinishi, Naoyuki Furutsuka, Hajime Mitsui, Kazue Nakagawa, Katsuji Ishikawa, Hisashi Ogura, Mitsuo Fuke, Katsunori Kawabata, Takashi Umehara, Katsushi Sumisaki
-
Publication number: 20070170869Abstract: The electronic flash unit disclosed comprises: a transformer (14) to vary voltages of a power supply; an accumulator (16) composed of a main capacitor (17) to charge an electric energy supplied from the transformer (14); a lamp unit (4) provided with a flashlamp (20), set inside of a reflector (19), that flashes by discharging of energy storages in the main capacitor (17) upon applying a voltage on a trigger terminal (21); and a trigger circuit (10) to generate the voltage to apply on the trigger terminal (21), wherein at least the lamp unit (4) is coated with an insulation material.Type: ApplicationFiled: March 12, 2007Publication date: July 26, 2007Applicant: PANASONIC PHOTO & LIGHTING CO., LTD.Inventors: Hirohiko Ina, Arata Sakamoto, Shohei Uno, Toshinori Maki, Katsumi Horinishi, Naoyuki Furutsuka, Hajime Mitsui, Kazue Nakagawa, Katsuji Ishikawa, Hisashi Ogura, Mitsuo Fuke, Katsunori Kawabata, Takashi Umehara, Katsushi Sumisaki
-
Patent number: 7049021Abstract: 1. A conductive composition for a polymer electrolyte fuel cell separator comprising: 1) a conductive component composed of graphite particles and optionally fine graphite particles; and 2) a thermoplastic resin and/or a thermosetting resin, 3) the graphite particles having an average particle diameter D1 of 55 to 65 ?m, 4) the melt viscosity being 1×102 to 5×103 Pa·s at 320° C., and 5) the weight ratio of (the graphite particles and optionally the fine graphite particles)/(the thermoplastic resin and/or the thermosetting resin) being 95/5 to 75/25.Type: GrantFiled: June 29, 2001Date of Patent: May 23, 2006Assignee: Osaka Gas Company LimitedInventors: Arata Sakamoto, Hiroyuki Okazaki
-
Publication number: 20050007030Abstract: The electronic flash unit disclosed comprises: a transformer (14) to vary voltages of a power supply; an accumulator (16) composed of a main capacitor (17) to charge an electric energy supplied from the transformer (14); a lamp unit (4) provided with a flashlamp (20), set inside of a reflector (19), that flashes by discharging of energy storages in the main capacitor (17) upon applying a voltage on a trigger terminal (21); and a trigger circuit (10) to generate the voltage to apply on the trigger terminal (21), wherein at least the lamp unit (4) is coated with an insulation material.Type: ApplicationFiled: November 28, 2002Publication date: January 13, 2005Inventors: Hirohiko Ina, Arata Sakamoto, Shohei Uno, Toshinori Maki, Katsumi Horinishi, Naoyuki Furutsuka, Hajime Mitsui, Kazue Nakagawa, Katsuji Ishikawa, Hisashi Ogura, Mitsuo Fuke, Katsunori Kawabata, Takashi Umehara, Katsushi Sumisaki
-
Publication number: 20030180597Abstract: 1.Type: ApplicationFiled: December 26, 2002Publication date: September 25, 2003Inventors: Arata Sakamoto, Hiroyuki Okazaki