Patents by Inventor Yoshinari Kasagi

Yoshinari Kasagi 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: 11035490
    Abstract: A solenoid valve main body has a space with an annular shape continually formed in a circumferential direction between a sleeve and the stator, a first breathing hole which allows an outside of the solenoid valve main body to communicate with the space and a second breathing hole which allows the space to communicate with the accommodation portion. The first breathing hole and the second breathing hole are positioned such that a clockwise distance and an anticlockwise distance in the circumferential direction from the first breathing hole to the second breathing hole are different from each other.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: June 15, 2021
    Inventors: Kenta Furukawa, Hiroyuki Iwanaga, Yoshinari Kasagi
  • Patent number: 11015730
    Abstract: A solenoid valve has a spool is moved via a rod. A breathing hole penetrates a sleeve in a radial direction and allows an inner space of a housing part to communicate with the outside when at least a circular columnar plunger is in a predetermined region provided on a solenoid case side of the sleeve. A through-hole is formed in an axial direction at the center axis of the circular columnar plunger. The rod is configured such that an opposing groove portion passes through the center of the circular columnar plunger in the radial direction and penetrates both radial sides provided with cutout portions of the rod formed at an opposing end portion facing a circular columnar plunger side and an inner surface of the opposing groove portion formed in a symmetrical arc shape as viewed in the radial direction.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: May 25, 2021
    Inventors: Yoshinari Kasagi, Hiroyuki Iwanaga, Wataru Matsushima, Hironori Dosho
  • Publication number: 20200332910
    Abstract: A solenoid valve main body has a space with an annular shape continually formed in a circumferential direction between a sleeve and the stator, a first breathing hole which allows an outside of the solenoid valve main body to communicate with the space and a second breathing hole which allows the space to communicate with the accommodation portion. The first breathing hole and the second breathing hole are positioned such that a clockwise distance and an anticlockwise distance in the circumferential direction from the first breathing hole to the second breathing hole are different from each other.
    Type: Application
    Filed: November 16, 2018
    Publication date: October 22, 2020
    Inventors: Kenta FURUKAWA, Hiroyuki IWANAGA, Yoshinari KASAGI
  • Publication number: 20200063885
    Abstract: A solenoid valve has a spool is moved via a rod. A breathing hole penetrates a sleeve in a radial direction and allows an inner space of a housing part to communicate with the outside when at least a circular columnar plunger is in a predetermined region provided on a solenoid case side of the sleeve. A through-hole is formed in an axial direction at the center axis of the circular columnar plunger. The rod is configured such that an opposing groove portion passes through the center of the circular columnar plunger in the radial direction and penetrating penetrates both radial sides provided with cutout portions of the rod formed at an opposing end portion facing a circular columnar plunger side and an inner surface of the opposing groove portion formed in a symmetrical arc shape as viewed in the radial direction.
    Type: Application
    Filed: November 15, 2017
    Publication date: February 27, 2020
    Inventors: Yoshinari KASAGI, Hiroyuki IWANAGA, Wataru MATSUSHIMA, Hironori DOSHO
  • Publication number: 20170314700
    Abstract: A solenoid valve unit has a breathing hole extending in a radial direction through a sleeve on a side of a solenoid portion and bringing a space, which is formed between an armature and a spool when the armature is at least in a predetermined region, into communication with the outside, a first opening facing a side of a valve portion and opening to the outside, a second opening opening to the outside, and a breathing channel in a solenoid case, the breathing channel communicating at an end thereof with the first opening and communicating at an opposite end thereof with the second opening.
    Type: Application
    Filed: November 5, 2015
    Publication date: November 2, 2017
    Inventors: Hiroyuki Iwanaga, Eiji Okamoto, Yoshinari Kasagi
  • Patent number: 9068577
    Abstract: The object of the present invention is to provide a solenoid valve which can be assembled easily and has good production efficiency.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: June 30, 2015
    Assignee: Eagle Industry Co., Ltd.
    Inventors: Yoshinari Kasagi, Hiroyuki Nishinosono, Hiroyuki Iwanaga
  • Patent number: 8960233
    Abstract: A solenoid valve 10 including a valve sleeve 41, and a solenoid portion 20 which is mounted at one end along axial direction of the valve sleeve 41. A plurality of ports 51 to 54 are formed on the valve sleeve 41. In at least an outlet port 51 of the plurality of ports, a relation of S1?S0 is fulfilled, where S1 is an opening area of valve portion when the spool 60 moves in an axial direction to maximally open the valve portion between the outlet port 51 and the internal flow passage 47, and S0 is the total flow passage cross-sectional area.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: February 24, 2015
    Assignee: Eagle Industry Co., Ltd.
    Inventors: Hiroyuki Nishinosono, Yoshinari Kasagi
  • Patent number: 8931758
    Abstract: Provided is a solenoid valve stable in response performance, whose quickness and damping performance are appropriate. In the solenoid valve, a respiration port for flowing fluid into and out from a space located on one side of a plunger that faces the spool is formed in an end portion of a valve sleeve. Further, a respiration groove, which causes the space on the one side of the plunger and the respiration port to communicate with each other when an end portion of the spool and an end portion of a center post are in contact with each other, is formed on the spool. This configuration makes it possible to discharge, with an appropriate level of flow-channel resistance, fluid placed in the space located on the one side of the plunger.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: January 13, 2015
    Assignee: Eagle Industry Co., Ltd.
    Inventors: Yoshinari Kasagi, Hiroyuki Nishinosono, Hiroyuki Iwanaga
  • Patent number: 8714179
    Abstract: A solenoid valve wherein a valve sleeve and a solenoid case can easily be formed coaxially and manufacturing costs are reduced. The solenoid valve of the present invention comprises a valve sleeve 41 provided with a spool 60 axially movable in said valve sleeve 41, a solenoid case 21 mounted to a case mounting groove 43 formed near an axial rear end of said valve sleeve 41, and a molded body 23 mounted inside said solenoid case 21 and provided with a coil 22 in said molded body 23, and a case opening portion 25 formed at an axial end of said solenoid case 21 is engaged with said case mounting groove 43, and a concave portion 29 is formed at an axial end of said molded body 23 and said axial rear end of said valve sleeve 41 is fitted to said concave portion 29.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: May 6, 2014
    Assignee: Eagle Industry Co., Ltd.
    Inventors: Hiroyuki Nisinosono, Yoshinari Kasagi
  • Publication number: 20130248743
    Abstract: The object of the present invention is to provide a solenoid valve which can be assembled easily and has good production efficiency.
    Type: Application
    Filed: November 18, 2011
    Publication date: September 26, 2013
    Applicant: EAGLE INDUSTRY CO., LTD.
    Inventors: Yoshinari Kasagi, Hiroyuki Nishinosono, Hiroyuki Iwanaga
  • Patent number: 8382064
    Abstract: Provided are a solenoid valve which is configured such that the valve body is not deformed when a retainer is mounted and which can be easily assembled, and a method of manufacturing the solenoid valve. A solenoid valve is provided with a valve body inside which a spool is provided so as to move in an axial direction, a solenoid section which is mounted to one end of the valve body in the axial direction thereof, and a retainer which is mounted to the other end of the valve body in the axial direction thereof. The retainer is fixed by a staking section which is provided to an end of the valve body in the axial direction thereof and staked in the axial direction.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: February 26, 2013
    Assignee: Eagle Industry Co., Ltd.
    Inventors: Hiroyuki Nisinosono, Yoshinari Kasagi
  • Publication number: 20120199771
    Abstract: Provided is a solenoid valve stable in response performance, whose quickness and damping performance are appropriate. In the solenoid valve, a respiration port (46) to be used for flowing fluid into and out from a space located on one side of a plunger (24) that faces the spool (60) is formed in an end portion of a valve sleeve (41) that faces a solenoid case (21). Further, in the solenoid valve, a respiration groove (66) is formed on the spool (60), wherein the respiration groove (66) causes the space located on the one side of the plunger (24) facing the spool (60), and the respiration port (46) to communicate with each other when an end portion of the spool (60) that faces the plunger (24), and an end portion of a center post (27) that faces the spool (60) are in contact with each other with the spool (60) having been put in the nearest possible position to the plunger (24).
    Type: Application
    Filed: October 12, 2010
    Publication date: August 9, 2012
    Applicant: Eagle Industry Co., Ltd.
    Inventors: Yoshinari Kasagi, Hiroyuki Nishinosono, Hiroyuki Iwanaga
  • Publication number: 20120056117
    Abstract: Disclosed is a solenoid valve 10 having a valve sleeve 41 in which a spool 60 is arranged on the interior so as to move freely in axis direction, and a solenoid portion 20 which is mounted at one end along axial direction of the valve sleeve 41 and which gives a force to move the spool 60 in axial direction. A plurality of ports 51 to 54, which properly communicate with an internal flow passage 47 formed in the valve sleeve 41, is formed inside the valve sleeve 41. In at least an outlet port 51 of the plurality of ports, a relation of S1?S0 is fulfilled, where S1 is an opening area of valve portion when the spool 60 moves in axial direction to maximally open the valve portion between the outlet port 51 and the internal flow passage 47, and S0 is the total flow passage cross-sectional area.
    Type: Application
    Filed: September 17, 2010
    Publication date: March 8, 2012
    Applicant: EAGLE INDUSTRY CO., LTD.
    Inventors: Hiroyuki Nishinosono, Yoshinari Kasagi
  • Publication number: 20110147630
    Abstract: The present invention provides a solenoid valve wherein a valve sleeve and a solenoid case can easily be formed coaxially and manufacturing costs are reduced. The solenoid valve of the present invention comprises a valve sleeve 41 provided with a spool 60 axially movable in said valve sleeve 41, a solenoid case 21 mounted to a case mounting groove 43 formed near an axial rear end of said valve sleeve 41, and a molded body 23 mounted inside said solenoid case 21 and provided with a coil 22 in said molded body 23, and a case opening portion 25 formed at an axial end of said solenoid case 21 is engaged with said case mounting groove 43, and a concave portion 29 is formed at an axial end of said molded body 23 and said axial rear end of said valve sleeve 41 is fitted to said concave portion 29.
    Type: Application
    Filed: August 26, 2009
    Publication date: June 23, 2011
    Applicant: EAGLE INDUSTRIES CO., LTD.
    Inventors: Hiroyuki Nisinosono, Yoshinari Kasagi
  • Publication number: 20110057133
    Abstract: Provided are a solenoid valve which is configured such that the valve body is not deformed when a retainer is mounted and which can be easily assembled, and a method of manufacturing the solenoid valve. A solenoid valve is provided with a valve body inside which a spool is provided so as to move in an axial direction, a solenoid section which is mounted to one end of the valve body in the axial direction thereof, and a retainer which is mounted to the other end of the valve body in the axial direction thereof. The retainer is fixed by a staking section which is provided to an end of the valve body in the axial direction thereof and staked in the axial direction.
    Type: Application
    Filed: August 26, 2009
    Publication date: March 10, 2011
    Applicant: EAGLE INDUSTRY CO., LTD.
    Inventors: Hiroyuki Nisinosono, Yoshinari Kasagi
  • Patent number: 7017885
    Abstract: In the region in which a coil and a connector are provided, the leakage of a fluid to which coil and connector is prevented by a seal member, a passage extending from the seal member to a position in the vicinity of a terminal of the connector is formed. At the time of completion of the production of a solenoid valve assembly, an air-tightness test on the seal member can be conducted directly through the passage, so that the detection of damage to the seal member, the detection of bite into the seal member, the detection of a defect of the seal member and so on can be carried out at the time of completion of the production of the mentioned assembly. Namely, the detection of the sealability of the seal member is rendered possible.
    Type: Grant
    Filed: March 18, 2003
    Date of Patent: March 28, 2006
    Assignee: NOK Corporation
    Inventors: Ichiro Hirata, Kazuaki Nagayoshi, Akira Ono, Makoto Hora, Yoshinari Kasagi
  • Patent number: 6971627
    Abstract: A solenoid valve appropriately used for pressure control of various fluids, or the like is concerned, and a solenoid valve is provided, which achieves improvement in sliding property of a plunger and is excellent in control characteristics. More specifically, a plunger 1 is substantially cylindrical-shaped and slidably supported at its outer peripheral side by a sleeve, the plunger being provided with a large-diameter portion 1a, which constitutes a sliding portion, the large-diameter portion 1a being alternately provided with a plurality of convex surface portions 1d and a plurality of groove portions 1e and having a cross sectional shape like petals.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: December 6, 2005
    Assignee: NOK Corporation
    Inventors: Ichiro Hirata, Norio Uemura, Yoshinari Kasagi
  • Patent number: 6969043
    Abstract: A substantially cylindrical annular space is formed by an outer circumferential surface of a cylindrical portion and a substantially flat surface portion of a substantially bottomed cylindrical sleeve, an inner circumferential surface of a case member, and a substantially flat surface portion of a bracket plate, a seal member being provided in this annular space. Thus, the simplification of the construction, and the miniaturization and the reduction of the weight is realized while a sealing performance between the inside and outside of the main body is maintained.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: November 29, 2005
    Assignee: NOK Corporation
    Inventors: Ichiro Hirata, Norio Uemura, Yoshinari Kasagi, Tadashi Yamaguchi
  • Patent number: 6811137
    Abstract: A casing member is provided at one end thereof with a bent portion, and when a connector member is inserted from an opening on the other end side of the casing member, the connector member is positioned by the bent portion. Workability in assembling is improved and a burden on various solenoid constituents at the time of assembling can be decreased by sequentially inserting all the various solenoid constituents from the opening on the other end side of the casing member after insertion of the connector member, mounting a valve section after a bracket plate is mounted, and performing caulking with projections for caulking, which are provided on an end of a valve sleeve.
    Type: Grant
    Filed: December 31, 2003
    Date of Patent: November 2, 2004
    Assignee: NOK Corporation
    Inventors: Ichiro Hirata, Norio Uemura, Yoshinari Kasagi
  • Publication number: 20040113112
    Abstract: A casing member is provided at one end thereof with a bent portion, and when a connector member is inserted from an opening on the other end side of the casing member, the connector member is positioned by the bent portion. Workability in assembling is improved and a burden on various solenoid constituents at the time of assembling can be decreased by sequentially inserting all the various solenoid constituents from the opening on the other end side of the casing member after insertion of the connector member, mounting a valve section after a bracket plate is mounted, and performing caulking with projections for caulking, which are provided on an end of a valve sleeve.
    Type: Application
    Filed: December 31, 2003
    Publication date: June 17, 2004
    Inventors: Ichiro Hirata, Norio Uemura, Yoshinari Kasagi