Patents by Inventor Kazuma YANAGISAWA

Kazuma YANAGISAWA 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: 20210037726
    Abstract: An emitter provided with: a water intake part that communicates with the interior of a tube when the emitter is joined to the tube; a pressure-reducing flow channel part for forming a pressure-reducing flow channel; a flow rate adjustment part for adjusting the flow rate of the irrigation liquid in accordance with the pressure of the irrigation liquid inside the tube; and a discharge part that faces a discharge opening. The flow rate adjustment part has: a base; an accommodation part that accommodates the base; a communication hole that opens to the base and communicates with the discharge part; and a diaphragm part that is flexible and is disposed so as to be separated from the base, the diaphragm part approaching the base when the pressure of the irrigation liquid inside the tube is received.
    Type: Application
    Filed: January 18, 2019
    Publication date: February 11, 2021
    Applicant: Enplas Corporation
    Inventors: Kazuma YANAGISAWA, Koki ONO
  • Publication number: 20210037727
    Abstract: An emitter comprises: an emitter main body; and a discharge amount adjustment unit that adjusts the amount of irrigation liquid discharged from the discharge opening of a tube. The discharge amount adjustment unit has a diaphragm part formed integrally with the emitter main body in a position facing the inner wall surface of the tube when the emitter is joined to the inner wall surface, the diaphragm part deforming in accordance with the pressure of the irrigation fluid inside the tube. The diaphragm part has a discharge amount securing part on the surface of the side facing the inner wall surface, the discharge amount securing part securing the discharge of irrigation fluid from the discharge opening at or above a fixed amount, even if the diaphragm part deforms and adheres to the inner wall surface.
    Type: Application
    Filed: January 28, 2019
    Publication date: February 11, 2021
    Applicant: Enplas Corporation
    Inventors: Kazuma YANAGISAWA, Koki ONO
  • Patent number: 10738870
    Abstract: A two-color molding method in which, when a secondary molded body is formed by covering the surface of a primary molded body made of a reinforcing-fiber-containing synthetic resin material with a reinforcing-fiber-free synthetic resin material, these synthetic resin materials may differ and the production cost does not increase. When a primary molded body is formed by injecting a molten reinforcing-fiber-containing synthetic resin material into a primary molding cavity, the molten reinforcing-fiber-containing synthetic resin material flows from one end toward the other end of the primary molding cavity and a short shot is performed. This exposes reinforcing fiber in a tooth of the primary molded body positioned at the other end of the primary molding cavity. In the secondary molding cavity, the tooth in which the reinforcing fiber is exposed is covered with a reinforcing-fiber-free synthetic resin material to form a synthetic resin gear as a two-color molded body.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: August 11, 2020
    Assignee: ENPLAS CORPORATION
    Inventor: Kazuma Yanagisawa
  • Publication number: 20200093076
    Abstract: The present invention aims to provide an emitter and a drip irrigation tube that can suppress the variations in the discharge amount of the liquid caused by the temperature of the liquid in the drip irrigation tube. The emitter (120) of the present invention is disposed on an inner wall of a tube (110) including a discharge port (112), for regulating discharge of irrigation liquid from an inside of the tube (110) to an outside of the tube (110) via the discharge port (112). The emitter (120) includes an intake portion; a regulating unit; a discharge portion; and a flow path. The regulating unit includes: a recess; and a film. The film is fixed in a state of covering an inner space of the recess, and a region of the film covering the inner space of the recess is a diaphragm portion.
    Type: Application
    Filed: May 28, 2018
    Publication date: March 26, 2020
    Inventor: Kazuma YANAGISAWA
  • Publication number: 20200084981
    Abstract: The present invention aims to provide an emitter and a drip irrigation tube that can suppress the variations in the discharge amount of the liquid in the drip irrigation tube. The emitter (120) of the present invention is an emitter for regulating discharge of irrigation liquid. The emitter (120) includes an intake portion for taking in the liquid in the tube (110); a regulating unit that regulates a discharge amount of the liquid; a discharge portion for discharging the liquid via a discharge port (112) of the tube (110); and a flow path communicating the intake portion and the regulating unit.
    Type: Application
    Filed: May 28, 2018
    Publication date: March 19, 2020
    Inventors: Kazuma YANAGISAWA, Atsushi TAKAHASHI
  • Publication number: 20190388924
    Abstract: The present invention aims to provide an emitter and a drip irrigation tube that can suppress the variations in the discharge amount of the liquid caused by pressure fluctuations of the liquid in the drip irrigation tube. The emitter of the present invention is to be disposed on an inner wall of a tube including a discharge port, for regulating discharge of irrigation liquid from an inside of the tube to an outside of the tube via the discharge port. The emitter includes an intake portion; a regulating unit; a discharge portion; and a flow path.
    Type: Application
    Filed: January 30, 2018
    Publication date: December 26, 2019
    Inventors: Kazuma YANAGISAWA, Atsushi TAKAHASHI
  • Publication number: 20190274264
    Abstract: This emitter comprises: an emitter body having a groove, a recess and a through hole on the upper surface thereof; and a film joined to the upper surface. This drip irrigation tube comprises: a tube; a discharge opening that is a hole extending through a wall of the tube; and an emitter joined to an inner wall surface of the tube at a position of the inner wall surface corresponding to the discharge opening.
    Type: Application
    Filed: November 2, 2017
    Publication date: September 12, 2019
    Inventor: Kazuma YANAGISAWA
  • Patent number: 10066725
    Abstract: Plural ejector pins are made to project before a molten resin containing reinforcing fibers is injected into an inside of a cavity through pin point gates in a web forming portion in the inside of the cavity and at positions outside the pin point gates in a radial direction. The ejector pins are retracted from the inside of the cavity after a flow of the molten resin containing reinforcing fibers injected into the inside of the cavity through the pin point gates impinges on the ejector pins and is divided and before a tooth portion forming portion in the inside of the cavity is filled with the molten resin containing reinforcing fibers. Accordingly, weld lines which extend along the radial direction are formed at positions outside the ejector pins in the radial direction, and the molten resin is filled in portions formed after the ejector pins are retracted.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: September 4, 2018
    Assignee: ENPLAS CORPORATION
    Inventors: Masaomi Hashimoto, Kazuma Yanagisawa
  • Publication number: 20180112640
    Abstract: A nozzle plate for a fuel injection device opposes a fuel injection port of a fuel injection device. A nozzle hole through which fuel injected from the fuel injection port passes is formed at the nozzle plate. At this nozzle plate for the fuel injection device, the nozzle hole has a fuel-flow-in-side opening end with a circular shape. The nozzle hole is coupled to the fuel injection port via fuel guide channels. The fuel guide channels have an opening into the nozzle hole, and a pair of opposing channel sidewalls. The opening has a channel width smaller than a hole diameter of the nozzle hole. One of the opposing channel sidewalls is formed to extend in a tangential direction of the nozzle hole. The fuel is directly flowed into the nozzle hole to generate a flow of the fuel in a spiral pattern in the nozzle hole.
    Type: Application
    Filed: May 11, 2016
    Publication date: April 26, 2018
    Inventor: Kazuma YANAGISAWA
  • Publication number: 20180003281
    Abstract: Plural ejector pins are made to project before a molten resin containing reinforcing fibers is injected into an inside of a cavity through pin point gates in a web forming portion in the inside of the cavity and at positions outside the pin point gates in a radial direction. The ejector pins are retracted from the inside of the cavity after a flow of the molten resin containing reinforcing fibers injected into the inside of the cavity through the pin point gates impinges on the ejector pins and is divided and before a tooth portion forming portion in the inside of the cavity is filled with the molten resin containing reinforcing fibers. Accordingly, weld lines which extend along the radial direction are formed at positions outside the ejector pins in the radial direction, and the molten resin is filled in portions formed after the ejector pins are retracted.
    Type: Application
    Filed: August 15, 2017
    Publication date: January 4, 2018
    Inventors: Masaomi HASHIMOTO, Kazuma YANAGISAWA
  • Patent number: 9772023
    Abstract: Plural ejector pins are made to project before a molten resin containing reinforcing fibers is injected into an inside of a cavity through pin point gates in a web forming portion in the inside of the cavity and at positions outside the pin point gates in a radial direction. The ejector pins are retracted from the inside of the cavity after a flow of the molten resin containing reinforcing fibers injected into the inside of the cavity through the pin point gates impinges on the ejector pins and is divided and before a tooth portion forming portion in the inside of the cavity is filled with the molten resin containing reinforcing fibers. Accordingly, weld lines which extend along the radial direction are formed at positions outside the ejector pins in the radial direction, and the molten resin is filled in portions formed after the ejector pins are retracted.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: September 26, 2017
    Assignee: ENPLAS CORPORATION
    Inventors: Masaomi Hashimoto, Kazuma Yanagisawa
  • Publication number: 20160327145
    Abstract: [Object]To provide a two-color molding method in which, when a secondary molded body is formed by covering the surface of a primary molded body made of a reinforcing-fiber-containing synthetic resin material with a reinforcing-fiber-free synthetic resin material, these synthetic resin materials may differ from each other and the production cost is prevented from increasing. [Solution] When a primary molded body 2 is formed by injecting a molten reinforcing-fiber-containing synthetic resin material 2a into a primary molding cavity 12, the molten reinforcing-fiber-containing synthetic resin material 2a is caused to flow from one end toward the other end of the primary molding cavity 12 and a short shot is performed. This exposes reinforcing fiber in a tooth 7 of the primary molded body 2 positioned at the other end of the primary molding cavity 12.
    Type: Application
    Filed: January 15, 2015
    Publication date: November 10, 2016
    Applicant: Enplas Corporation
    Inventor: Kazuma YANAGISAWA
  • Publication number: 20150007680
    Abstract: A plurality of ejector pins are made to project before a molten resin containing reinforcing fibers is injected into the inside of a cavity through pin point gates in a web forming portion in the inside of the cavity and at positions outside the pin point gates in the radial direction. The plurality of ejector pins are retracted from the inside of the cavity after the flow of the molten resin containing reinforcing fibers injected into the inside of the cavity through the pin point gates impinges on the plurality of ejector pins and is divided and before a tooth portion forming portion in the inside of the cavity is filled with the molten resin containing reinforcing fibers. Accordingly, weld lines which extend along the radial direction are formed at positions outside the ejector pins in the radial direction, and the molten resin is filled in portions formed after the ejector pins are retracted.
    Type: Application
    Filed: July 7, 2014
    Publication date: January 8, 2015
    Inventors: Masaomi HASHIMOTO, Kazuma YANAGISAWA
  • Patent number: 8613532
    Abstract: In the light flux controlling member (5), the angle between an optical path of light output from the light emission center (14) of a light emitting element (4) and optical axis L1 is ?2. Light is incident on the light flux controlling member (5) through an input surface and travels inside the light flux controlling member at an angle ?2 with respect to optical axis L1. Then, light is output from a light control output surface (10) at an angle ?3 with respect to optical axis L1. The input surface (15) and the light control output surface (10) are formed such that, in a range 0<?1??1max, the relationship between ?1 and ?2 is reversed from ?1<?2 to ?1>?2 when ?1 increases, and the relationship between ?1 and ?3 is reversed from ?1<?3 to ?1>?3 when ?1 increases.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: December 24, 2013
    Assignee: Enplas Corporation
    Inventors: Yuki Fujii, Mamoru Yoshida, Kazuma Yanagisawa, Tomohiro Saito
  • Publication number: 20110249451
    Abstract: In the light flux controlling member (5), the angle between an optical path of light output from the light emission center (14) of a light emitting element (4) and optical axis L1 is ?2. Light is incident on the light flux controlling member (5) through an input surface and travels inside the light flux controlling member at an angle ?2 with respect to optical axis L1. Then, light is output from a light control output surface (10) at an angle ?3 with respect to optical axis L1. The input surface (15) and the light control output surface (10) are formed such that, in a range 0<?1??1max, the relationship between ?1 and ?2 is reversed from ?1<?2 to ?1>?2 when ?1 increases, and the relationship between ?1 and ?3 is reversed from ?1<?3 to ?1>?3 when ?1 increases.
    Type: Application
    Filed: April 6, 2011
    Publication date: October 13, 2011
    Inventors: Yuki FUJII, Mamoru YOSHIDA, Kazuma YANAGISAWA, Tomohiro SAITO