Patents by Inventor Youhei Midorikawa
Youhei Midorikawa 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: 9353747Abstract: A scroll fluid machine includes a revolving scroll in which a revolving wrap stands upright on an end plate supported revolvably on a drive shaft, and a fixed scroll which is provided opposite the revolving scroll and in which a fixed wrap stands upright on an end plate. The revolving and fixed wraps overlap to form a compression chamber for compressing a fluid by causing the revolving scroll to revolve. The scroll fluid machine further includes a rod-shaped member attached to the end plate of the revolving scroll and extending to a rear surface side of the fixed scroll, which is a side not opposing the revolving scroll. A revolving plate is attached to the rod-shaped member, provided with a pin crank mechanism, and supported revolvably on the drive shaft. The revolving plate is provided with a sealing unit that seals the compression chamber in an axial direction.Type: GrantFiled: July 3, 2013Date of Patent: May 31, 2016Assignee: ANEST IWATA CORPORATIONInventors: Hiroshi Ito, Shiro Tanigawa, Youhei Midorikawa
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Publication number: 20130294956Abstract: A scroll fluid machine includes a revolving scroll in which a revolving wrap stands upright on an end plate supported revolvably on a drive shaft, and a fixed scroll which is provided opposite the revolving scroll and in which a fixed wrap stands upright on an end plate. The revolving and fixed wraps overlap to form a compression chamber for compressing a fluid by causing the revolving scroll to revolve. The scroll fluid machine further includes a rod-shaped member attached to the end plate of the revolving scroll and extending to a rear surface side of the fixed scroll, which is a side not opposing the revolving scroll. A revolving plate is attached to the rod-shaped member, provided with a pin crank mechanism, and supported revolvably on the drive shaft. The revolving plate is provided with a sealing unit that seals the compression chamber in an axial direction.Type: ApplicationFiled: July 3, 2013Publication date: November 7, 2013Inventors: Hiroshi ITO, Shiro TANIGAWA, Youhei MIDORIKAWA
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Patent number: 7559966Abstract: An exhaust gas filter comprises an outer tube, a plurality of center-closing filter units each having an isolation plate; and a plurality of center-opening filter units having an annular isolation plate, two kinds of filter units being arranged alternately in the outer tube. The isolation plate and annular isolation plate are enclosed by flammable fibers. When a contaminated gas goes through the flammable fibers, it can be filtrated.Type: GrantFiled: February 22, 2007Date of Patent: July 14, 2009Assignee: Anest Iwata CorporationInventors: Youhei Midorikawa, Satoshi Miki, Tetsuya Abe, Takashi Arai, Masahiro Nemoto, Seiji Hiroki
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Publication number: 20080152525Abstract: A scroll fluid machine comprises a body having a driving shaft, an electric motor coupled to the driving shaft, and a blower. The blower cools the body, a connection between the body and motor, and the electric motor by wind from the blower.Type: ApplicationFiled: December 26, 2007Publication date: June 26, 2008Applicant: ANEST IWATA CORPORATIONInventors: Masaru TSUCHIYA, Youhei MIDORIKAWA
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Patent number: 7329108Abstract: A scroll fluid machine comprises a housing having a fixed scroll and an orbiting scroll revolved by a driving shaft which is driven by a motor behind the housing. A blowing fan is provided between the orbiting scroll and the motor. Rotation of the fan causes decompression in the housing to allow primary external air to be sucked from the outside into the housing through a primary sucking hole. Secondary external air is introduced from a secondary sucking hole and mixed with the primary external air of the scroll fluid machine to cool the parts of the scroll fluid machine in the housing and/or the motor.Type: GrantFiled: September 28, 2006Date of Patent: February 12, 2008Assignee: Anest Iwata CorporationInventors: Masaru Tsuchiya, Hidetoshi Ishikawa, Youhei Midorikawa
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Patent number: 7293969Abstract: A scroll fluid machine comprises a stationary scroll having a stationary wrap and an orbiting scroll having an orbiting wrap. A tip seal is provided in a tip-seal groove at the ends of the stationary and orbiting wraps to allow the stationary wrap to engage with the orbiting wrap slidably. The tip seal comprises a sealing material in the tip-seal groove and a backup material between the sealing material and the bottom of the tip-seal groove. The tip seal tightly contact the backup material without an adhesive to keep their sideward positional relationship exact.Type: GrantFiled: August 15, 2006Date of Patent: November 13, 2007Assignee: Anest Iwata CorporationInventor: Youhei Midorikawa
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Publication number: 20070234692Abstract: An exhaust gas filter comprises an outer tube, a plurality of center-closing filter units each having an isolation plate; and a plurality of center-opening filter units having an annular isolation plate, two kinds of filter units being arranged alternately in the outer tube. The isolation plate and annular isolation plate are enclosed by flammable fibers. When a contaminated gas goes through the flammable fibers, it can be filtrated.Type: ApplicationFiled: February 22, 2007Publication date: October 11, 2007Inventors: Youhei Midorikawa, Satoshi Miki, Tetsuya Abe, Takashi Arai, Masahiro Nemoto, Seiji Hiroki
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Publication number: 20070207047Abstract: A scroll fluid machine comprises an orbiting scroll and a fixed scroll. The orbiting scroll has an orbiting wrap and the fixed scroll has a fixed wrap. An engagement groove is formed at the end of the orbiting or fixed wrap. A tip seal engages in the engagement groove and comprises a PTFE sealing material on a sintered carbon backup material bonded with an adhesive made of epoxy resin.Type: ApplicationFiled: February 23, 2007Publication date: September 6, 2007Inventor: Youhei Midorikawa
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Patent number: 7210913Abstract: A scroll fluid machine comprises a housing, a drive shaft, a stationary scroll fixed to the housing, and an orbiting scroll driven by the drive shaft. A gas from the outer circumference of the housing is introduced between the stationary and orbiting scrolls, and sent to the center by revolving the orbiting scroll in engagement with the stationary scroll. On the rear surface of the stationary scroll, there are provided a plurality of cooling fins that radially extend. Between the adjacent cooling fins, a silencer is provided to prevent noise caused by discharge of the gas.Type: GrantFiled: March 23, 2006Date of Patent: May 1, 2007Assignee: Anest Iwata CorporationInventor: Youhei Midorikawa
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Publication number: 20070077159Abstract: A scroll fluid machine comprises a housing having a fixed scroll and an orbiting scroll revolved by a driving shaft which is driven by a motor behind the housing. A blowing fan is provided between the orbiting scroll and the motor. Rotation of the fan causes decompression in the housing to allow primary external air to be sucked from the outside into the housing through a primary sucking hole. Secondary external air is introduced from a secondary sucking hole and mixed with the primary external air of the scroll fluid machine to cool the parts of the scroll fluid machine in the housing and/or the motor.Type: ApplicationFiled: September 28, 2006Publication date: April 5, 2007Applicant: ANEST IWATA CORPORATIONInventors: Masaru Tsuchiya, Hidetoshi Ishikawa, Youhei Midorikawa
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Publication number: 20070071626Abstract: In a scroll fluid machine, an orbiting scroll comprises an orbiting end plate having an orbiting wrap and a fixed scroll comprises a fixed end plate having a fixed wrap. An engagement groove is formed at the tip ends of the orbiting wrap and fixed wrap, and/or the fixed or orbiting end plate. A seal is fitted in the engagement groove in sliding contact with a counter member. The seal comprises a sealing material and a backup material between the sealing material and the bottom of the engagement groove. The backup material has a plurality of projections which elastically stretch to press the inner circumferential surface of the engagement groove when the seal is pressed.Type: ApplicationFiled: September 27, 2006Publication date: March 29, 2007Applicant: ANEST IWATA CORPORATIONInventors: Masaru TSUCHIYA, Youhei MIDORIKAWA
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Patent number: 7195469Abstract: In a scroll fluid machine, a stationary scroll and an orbiting scroll are provided. On the stationary scroll opposing the orbiting scroll, an annular groove is formed. An O-ring, a flexible support ring and a sliding member are put in the annular groove. The support ring has legs between which the O-ring is held. The sliding member in sliding contact with the annular groove is placed on the support ring, thereby decreasing deterioration and keeping stable sealing.Type: GrantFiled: April 8, 2005Date of Patent: March 27, 2007Assignee: Anest Iwata CorporationInventors: Masaru Tsuchiya, Youhei Midorikawa
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Publication number: 20070048163Abstract: A scroll fluid machine comprises a stationary scroll having a stationary wrap and an orbiting scroll having an orbiting wrap. A tip seal is provided in a tip-seal groove at the ends of the stationary and orbiting wraps to allow the stationary wrap to engage with the orbiting wrap slidably. The tip seal comprises a sealing material in the tip-seal groove and a backup material between the sealing material and the bottom of the tip-seal groove. The tip seal tightly contact the backup material without an adhesive to keep their sideward positional relationship exact.Type: ApplicationFiled: August 15, 2006Publication date: March 1, 2007Applicant: ANEST IWATA CORPORATIONInventor: Youhei MIDORIKAWA
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Patent number: 7144233Abstract: A scroll fluid machine comprises a housing, a driving shaft, a fixed scroll fixed to the housing, and an orbiting scroll. A gas introduced from the outer circumference of the housing is compressed towards the center of the housing with revolution of the orbiting scroll by the driving shaft. The compressed gas is discharged through a discharge hole extending from the center outward in a radial direction. A silencer fits in the discharge hole to prevent noise caused by discharge of the gas.Type: GrantFiled: March 21, 2006Date of Patent: December 5, 2006Inventor: Youhei Midorikawa
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Publication number: 20060222547Abstract: A scroll fluid machine comprises a housing, a driving shaft, a fixed scroll fixed to the housing, and an orbiting scroll. A gas introduced from the outer circumference of the housing is compressed towards the center of the housing with revolution of the orbiting scroll by the driving shaft. The compressed gas is discharged through a discharge hole extending from the center outward in a radial direction. A silencer fits in the discharge hole to prevent noise caused by discharge of the gas.Type: ApplicationFiled: March 21, 2006Publication date: October 5, 2006Applicant: ANEST IWATA CORPORATIONInventor: Youhei MIDORIKAWA
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Publication number: 20060222548Abstract: A scroll fluid machine comprises a housing, a drive shaft, a stationary scroll fixed to the housing, and an orbiting scroll driven by the drive shaft. A gas from the outer circumference of the housing is introduced between the stationary and orbiting scrolls, and sent to the center by revolving the orbiting scroll in engagement with the stationary scroll. On the rear surface of the stationary scroll, there are provided a plurality of cooling fins that radially extend. Between the adjacent cooling fins, a silencer is provided to prevent noise caused by discharge of the gas.Type: ApplicationFiled: March 23, 2006Publication date: October 5, 2006Inventor: Youhei Midorikawa
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Publication number: 20050249623Abstract: In a scroll fluid machine, a stationary scroll and an orbiting scroll are provided. On the stationary scroll opposing the orbiting scroll, an annular groove is formed. An O-ring, a flexible support ring and a sliding member are put in the annular groove. The support ring has legs between which the O-ring is held. The sliding member in sliding contact with the annular groove is placed on the support ring, thereby decreasing deterioration and keeping stable sealing.Type: ApplicationFiled: April 8, 2005Publication date: November 10, 2005Applicant: Anest Iwata CorporationInventors: Masaru Tsuchiya, Youhei Midorikawa