Patents by Inventor Yuji Nakazawa
Yuji Nakazawa 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).
-
Publication number: 20200096220Abstract: A drive shaft rotates a load. A drive support rotates the drive shaft and supports a radial load of the drive shaft in a non-contact manner, by an electromagnetic force generated by the flow of a current within a predetermined current range through the drive support. A control section controls an operation of the load based on a magnetic flux margin degree expressed by the difference between a total magnetic flux amount generated at the drive support and a predetermined limit of the total magnetic flux amount for the drive support. The total magnetic flux amount includes driving magnetic flux and the supporting magnetic flux in a predetermined operation region of the load. The driving magnetic flux is generated at the drive support for rotating the drive shaft. The supporting magnetic flux is generated at the drive support for supporting a radial load of the drive shaft.Type: ApplicationFiled: May 8, 2018Publication date: March 26, 2020Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Yuji NAKAZAWA, Atsushi SAKAWAKI
-
Patent number: 9964146Abstract: A magnetic bearing which would reduce a leakage magnetic flux to be generated between teeth is provided. A predetermined one of its teeth (24) is configured so that a pitch (P1) between the predetermined tooth (24) and one of two adjacent teeth (24) that are located on clockwise and counterclockwise sides thereof in the circumferential direction is broader than a pitch (P2) between the predetermined tooth (24) and the other tooth (24) and that a magnetic flux flows in the same radial direction through the predetermined tooth (24) and the tooth (24) spaced from the predetermined tooth (24) by the narrower pitch (P1) but flows in two different radial directions through the predetermined tooth (24) and the tooth (24) spaced from the predetermined tooth (24) by the broader pitch (P2).Type: GrantFiled: August 26, 2013Date of Patent: May 8, 2018Assignee: Daikin Industries, Ltd.Inventors: Yusuke Irino, Yuji Nakazawa
-
Publication number: 20170234364Abstract: A magnetic bearing includes a controller dividing a control region in two regions based on an individual difference between electromagnets regarding a correlation between two or more parameters among a current flowing through the electromagnets, a number of flux linkages, a gap width, magnetic energy, magnetic co-energy, electromagnetic force, and a parameter derived using these parameters. In a first control region with a small individual difference, the controller uses a control model common for all of the electromagnets. In a second control region with a large individual difference, the controller performs position control of a drive shaft using control models provided one for each of the electromagnets or one for each of a predetermined number of electromagnet groups.Type: ApplicationFiled: August 31, 2015Publication date: August 17, 2017Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Atsushi SAKAWAKI, Yuji NAKAZAWA
-
Patent number: 9689398Abstract: A magnetic bearing body supports a rotating shaft using a combined electromagnetic force of a pair of control electromagnets without contact. A controller detects a control index value based on a first coil current passed through a coil of a first control electromagnet of the pair of control electromagnets which generates an electromagnetic force in the same direction as that of a load exerted on the rotating shaft, the control index value being an index of the degree of margin for error in control depending on a value of the first coil current. And the controller controls a middle value of a pair of coil currents passed through the respective corresponding coils of the pair of control electromagnets so that the control index value approaches a predetermined target index value.Type: GrantFiled: December 19, 2012Date of Patent: June 27, 2017Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Atsushi Sakawaki, Yuji Nakazawa, Yusuke Irino, Naoya Yamashita
-
Patent number: 9660499Abstract: A stator is provided which exerts a combined electromagnetic force of a plurality of electromagnets on a drive shaft having a fluctuating load. A controller is provided which controls a current difference between a first coil current passed through a coil of the electromagnet generating an electromagnetic force in a direction opposite to that of the load and a second coil current passed through a coil of the electromagnet generating an electromagnetic force in the same direction as that of the load to perform a position control on the drive shaft. The controller adjusts the second coil current to reduce an average value of the second coil current.Type: GrantFiled: May 29, 2012Date of Patent: May 23, 2017Assignee: Daikin Industries, Ltd.Inventors: Atsushi Sakawaki, Yuji Nakazawa, Yusuke Irino, Naoya Yamashita
-
Publication number: 20150233422Abstract: A magnetic bearing which would reduce a leakage magnetic flux to be generated between teeth is provided. A predetermined one of its teeth (24) is configured so that a pitch (P1) between the predetermined tooth (24) and one of two adjacent teeth (24) that are located on clockwise and counterclockwise sides thereof in the circumferential direction is broader than a pitch (P2) between the predetermined tooth (24) and the other tooth (24) and that a magnetic flux flows in the same radial direction through the predetermined tooth (24) and the tooth (24) spaced from the predetermined tooth (24) by the narrower pitch (P1) but flows in two different radial directions through the predetermined tooth (24) and the tooth (24) spaced from the predetermined tooth (24) by the broader pitch (P2).Type: ApplicationFiled: August 26, 2013Publication date: August 20, 2015Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Yusuke Irino, Yuji Nakazawa
-
Patent number: 9081199Abstract: The present invention provides: a protein having dipeptide-synthesizing activity; DNA encoding the protein; a recombinant DNA comprising the DNA; a transformant transformed with the recombinant DNA; a process for producing the protein having dipeptide-synthesizing activity using the transformant or the like; a process for producing a dipeptide using the protein having dipeptide-synthesizing activity; and a process for producing a dipeptide using, as an enzyme source, a culture of a transformant or a microorganism which produces the protein having dipeptide-synthesizing activity or the like.Type: GrantFiled: March 17, 2006Date of Patent: July 14, 2015Assignee: KYOWA HAKKO BIO CO., LTD.Inventors: Kuniki Kino, Yuji Nakazawa, Makoto Yagasaki
-
Publication number: 20140363321Abstract: A magnetic bearing body supports a rotating shaft using a combined electromagnetic force of a pair of control electromagnets without contact. A controller detects a control index value based on a first coil current passed through a coil of a first control electromagnet of the pair of control electromagnets which generates an electromagnetic force in the same direction as that of a load exerted on the rotating shaft, the control index value being an index of the degree of margin for error in control depending on a value of the first coil current. And the controller controls a middle value of a pair of coil currents passed through the respective corresponding coils of the pair of control electromagnets so that the control index value approaches a predetermined target index value.Type: ApplicationFiled: December 19, 2012Publication date: December 11, 2014Inventors: Atsushi Sakawaki, Yuji Nakazawa, Yusuke Irino, Naoya Yamashita
-
Publication number: 20140234139Abstract: A stator is provided which exerts a combined electromagnetic force of a plurality of electromagnets on a drive shaft having a fluctuating load. A controller is provided which controls a current difference between a first coil current passed through a coil of the electromagnet generating an electromagnetic force in a direction opposite to that of the load and a second coil current passed through a coil of the electromagnet generating an electromagnetic force in the same direction as that of the load to perform a position control on the drive shaft. The controller adjusts the second coil current to reduce an average value of the second coil current.Type: ApplicationFiled: May 29, 2012Publication date: August 21, 2014Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Atsushi Sakawaki, Yuji Nakazawa, Yusuke Irino, Naoya Yamashita
-
Publication number: 20090197303Abstract: The present invention provides: a protein having dipeptide-synthesizing activity; DNA encoding the protein; a recombinant DNA comprising the DNA; a transformant transformed with the recombinant DNA; a process for producing the protein having dipeptide-synthesizing activity using the transformant or the like; a process for producing a dipeptide using the protein having dipeptide-synthesizing activity; and a process for producing a dipeptide using, as an enzyme source, a culture of a transformant or a microorganism which produces the protein having dipeptide-synthesizing activity or the like.Type: ApplicationFiled: December 27, 2006Publication date: August 6, 2009Applicant: KYOWA HAKKO KOGYO CO., LTD.Inventors: Kuniki Kino, Atsushi Noguchi, Yuji Nakazawa, Makoto Yagasaki
-
Publication number: 20090047706Abstract: The present invention provides: a protein having dipeptide-synthesizing activity; DNA encoding the protein; a recombinant DNA comprising the DNA; a transformant transformed with the recombinant DNA; a process for producing the protein having dipeptide-synthesizing activity using the transformant or the like; a process for producing a dipeptide using the protein having dipeptide-synthesizing activity; and a process for producing a dipeptide using, as an enzyme source, a culture of a transformant or a microorganism which produces the protein having dipeptide-synthesizing activity or the like.Type: ApplicationFiled: March 17, 2006Publication date: February 19, 2009Applicant: KYOWA HAKKO KOGYO CO., LTD.Inventors: Kuniki Kino, Yuji Nakazawa, Makoto Yagasaki
-
Patent number: 7171991Abstract: A fixed quantity supply equipment for inflators is combined with a heat-treatment equipment for inflators. A bottom portion 22 of an inflator accommodating chamber 20 at a predetermined position is opened by an opening/closing means 30 utilizing pneumatics to cause inflators 40 inside the inflator accommodating chamber to fall naturally. Thereafter, the bottom portion 22 is closed, the bottom portion 22 of the next inflator accommodating chamber 20 is opened to cause inflators 40 inside the same to fall naturally. These actions are repeated to supply the inflators 40 in a constant number.Type: GrantFiled: December 23, 2003Date of Patent: February 6, 2007Assignee: Daicel Chemical Industries, Ltd.Inventors: Keishi Aoyama, Yuji Nakazawa
-
Publication number: 20060162829Abstract: The present invention provides an inflator treatment method for disposal with which the operation time can be reduced greatly. Using elevating means 45, a floor portion 15 only is lowered from a thermally treating tower 10 and placed on a carriage 50. The carriage 50 is moved to a position removed from the high-temperature thermally treating tower 10, and in this position, a bucket 40 carrying a treated inflator is replaced by an empty bucket 40.Type: ApplicationFiled: December 26, 2003Publication date: July 27, 2006Inventors: Yuji Nakazawa, Tadaaki Sugimoto, Masao Yoshii
-
Publication number: 20060070560Abstract: The present invention provides a highly workable disposal method for a seatbelt pretensioner used in an automobile. This method is a disposal method for a seatbelt pretensioner and attachments thereof, in which the attachments are removed, whereupon the seatbelt pretensioner, which contains an explosive component, is subjected to thermal treatment at a temperature that is equal to or greater than the ignition point of the explosive component.Type: ApplicationFiled: December 26, 2003Publication date: April 6, 2006Inventor: Yuji Nakazawa
-
Publication number: 20050089387Abstract: The present invention provides a fixed quantity supply equipment for inflators which is combined with a heat-treatment equipment for inflators. A bottom portion 22 of an inflator accommodating chamber 20 at a predetermined position is opened by an opening/closing means 30 utilizing pneumatics to cause inflators 40 inside the inflator accommodating chamber to fall naturally. Thereafter, the bottom portion 22 is closed, the bottom portion 22 of the next inflator accommodating chamber 20 is opened to cause inflators 40 inside the same to fall naturally. These actions are repeated to supply the inflators 40 in a constant number.Type: ApplicationFiled: December 23, 2003Publication date: April 28, 2005Inventors: Keishi Aoyama, Yuji Nakazawa
-
Publication number: 20050081681Abstract: The present invention provides a high temperature treating method for inflators for an air bag with an excellent workability. The present invention is a high temperature treating method for inflators for an air bag provided with a step of cutting and removing wire harnesses connected for inflator actuation, a step of performing grouping according to main metals constituting inflators, and a step of charging the inflators which have been subjected to treatment in the preceding steps into a thermally treating tower to conduct thermal treatment at a temperature at which gas generating materials inside the inflators burn and the main metals constituting inflators do not melt.Type: ApplicationFiled: December 23, 2003Publication date: April 21, 2005Inventors: Kaoru Yamaki, Yuji Nakazawa
-
Publication number: 20050019139Abstract: The present invention provides an automatic charging system of inflators into the thermally treating tower. The inflators 40 are conveyed inside a tubular passage 10 by a bucket 12 in an inflator conveying and discharging apparatus, and they are discharged into a first vertical passage 51 of an inflator charging apparatus. The inflators 40 are charged into a thermally treating tower 100 via a flat passage 53 and a second vertical passage 52.Type: ApplicationFiled: December 22, 2003Publication date: January 27, 2005Inventors: Keishi Aoyama, Yuji Nakazawa
-
Publication number: 20040164467Abstract: The present invention provides an inflator thermal treatment equipment which can prevent an accidental damage to the equipment. A partition means 25 comprising an iron grating is fixed between a thermally treating tower 10 and an exhaust gas tube 16. When the interior of the thermally treating tower 10 is heated to an ignition temperature of gas generating materials inside inflators 30 or more to burn the gas generating materials, such an event may occur that the inflators 30 jump up due to pressures at combustion. At that time, the inflators 30 jumped up are prevented from colliding against the exhaust gas tube 16 by the partition means 25.Type: ApplicationFiled: December 23, 2003Publication date: August 26, 2004Inventors: Keishi Aoyama, Yuji Nakazawa
-
Patent number: 6012659Abstract: To provide a method for easily discriminating used and unused gas generators from among gas generators for air bags separated from used cars in a car scrapping process. A method for discriminating between used and unused gas generators according to the present invention is a method for discriminating used and unused gas generators from among gas generators for air bags separated from used cars in a car scrapping process, and this method comprises the steps of:a) crushing used cars mounted with gas generators each having on a surface thereof a material discoloring according to the surface temperatures in actuating the gas generator to separate the gas generators, andb) discriminating the gas generators in which surfaces are discolored and the gas generators in which surfaces are not discolored from among the separated gas generators.Type: GrantFiled: September 12, 1997Date of Patent: January 11, 2000Assignees: Daicel Chemical Industries, Ltd., Toyota Jidosha KabushikiKaishaInventors: Yuji Nakazawa, Mitsuhiko Fukabori, Yusaburo Nakazato, Osamu Fujimoto, Yutaka Kondo, Masahiro Miyaji
-
Patent number: 4085274Abstract: 4-OXOPENTADECANEDIOIC ACID IS PREPARED BY OXIDIZING A .alpha.-CYCLODODEC-1-ENYLPROPIONIC ACID DERIVATIVE HAVING ONE OF THE FOLLOWING CHEMICAL FORMULAE AT ITS ETHYLENIC DOUBLE BOND WITH OZONE. ##STR1## The compound is useful as an intermediate for a musk perfume compound. The compound having the formula II is selectively prepared from cyclododecanone and di-alkyl succinate.Type: GrantFiled: May 26, 1976Date of Patent: April 18, 1978Assignee: Daicel Ltd.Inventors: Katuhiko Takahashi, Kyozo Arimoto, Yoshiyuki Arai, Tsuyoshi Morinaga, Yuji Nakazawa