Patents Assigned to Enplas Corporation
  • Gear housing for a planetary gear device that structurally isolates an inner gear
    Patent number: 11156286
    Abstract: Separate structural units for an inner gear and a housing of a planetary gear device include an inner gear with a first raised portion formed on the outer peripheral surface of the inner gear, where the first raised portion extends towards in a direction that is inclined with respect to the axial direction of the inner gear. A housing includes a second raised portion formed on an inner peripheral surface, where the second raised portion extends in a direction that is inclined in respect to the axial direction. The housing contains the inner gear such that there is a gap formed between the inner peripheral surface of the housing and the outer peripheral surface of the inner gear. Movement of the inner gear within the interior of the housing is limited through linear contact of the first raised portion and the second raised portion.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: October 26, 2021
    Assignee: ENPLAS CORPORATION
    Inventors: Toshiki Kawada, Shohei Ishida, Takuya Kaneko
  • FLOW RATE MEASUREMENT DEVICE
    Publication number: 20210318151
    Abstract: A flow rate measurement device includes a channel; a flow detection part disposed at the channel, the flow detection part including an impeller configured to be rotated by a flow of the fluid and a reflection part disposed at the impeller and configured to reflect light; a light source configured to emit light toward the reflection part; and a detection part configured to receive light emitted from the light source and reflected by the reflection part. A width of a detection surface of the detection part intermittently or continuously changes in a movement direction of the reflection part along with rotation of the impeller as viewed in a direction orthogonal to a rotation axis of the impeller, or a width of a reflection surface of the reflection part intermittently or continuously changes in a rotational direction of the impeller.
    Type: Application
    Filed: April 9, 2021
    Publication date: October 14, 2021
    Applicant: Enplas Corporation
    Inventors: Shimpei MORIOKA, Tsuyoshi WATANABE, Hayate KAWANO
  • Optical receptacle and optical module
    Patent number: 11137558
    Abstract: An optical receptacle includes an optical receptacle main body and a filter. The optical receptacle main body includes a first optical surface, a second optical surface, a third optical surface, and a reflecting surface. The filter includes a first filter that reflects light of a first wavelength and allows light of a second wavelength to pass therethrough, and a second filter that reflects the light of the second wavelength and allows the light of the first wavelength to pass therethrough. The filter is disposed on the optical receptacle main body such that the first filter or the second filter makes intimate contact with the reflecting surface. A second central axis of the second optical surface do not coincide with a light axis of a light-receiving element. A third central axis of the third optical surface do not coincide with a light axis of a light-emitting element.
    Type: Grant
    Filed: July 6, 2020
    Date of Patent: October 5, 2021
    Assignee: ENPLAS CORPORATION
    Inventors: Shimpei Morioka, Ayano Kon
  • LIGHT FLUX CONTROLLING MEMBER, LIGHT EMITTING DEVICE, SURFACE LIGHT SOURCE DEVICE AND DISPLAY DEVICE
    Publication number: 20210293396
    Abstract: A light flux controlling member includes an incidence surface, a reflection surface, an annular groove and an emission surface. The annular groove is disposed so as not to intersect an optical path of light incident on the incidence surface, reflected by the reflection surface, and reaching the emission surface. The first annular surface is formed so that its distance from the central axis increases, from the back side to the front side, and refracts, toward the front surface, light emitted from the light emitting center of the light emitting element, and directly reaching the first annular surface. The second annular surface is formed so that its distance from the central axis increases, from the back side to the front side, and refracts, toward the front side, light emitted from the light emitting element, incident on the incidence surface, and directly reaching the second annular surface.
    Type: Application
    Filed: March 17, 2021
    Publication date: September 23, 2021
    Applicant: Enplas Corporation
    Inventor: Takuro MOMOI
  • LIQUID HANDLING DEVICE AND LIQUID HANDLING METHOD
    Publication number: 20210283602
    Abstract: A liquid handling device includes a common channel, a first liquid inlet channel connected to the common channel, a first liquid outlet channel connected to the common channel, a second liquid inlet channel connected to the common channel, and a second liquid outlet channel connected to the common channel. The ratio between the volume between the confluence part of the first liquid inlet channel and the confluence part of the first liquid outlet channel, and the volume between the confluence part of the second liquid inlet channel and the confluence part of the second liquid outlet channel in the common channel is X:Y. The liquid handling device can mix first liquid and second liquid in a volume ratio of X:Y.
    Type: Application
    Filed: March 10, 2021
    Publication date: September 16, 2021
    Applicant: Enplas Corporation
    Inventor: Nobuya SUNAGA
  • LIQUID HANDLING DEVICE, LIQUID HANDLING SYSTEM AND LIQUID HANDLING METHOD
    Publication number: 20210283603
    Abstract: A liquid handling device includes a common channel, a plurality of wells, a magnetic beads chamber and a plurality of valves. The plurality of valves are rotary membrane valves disposed on the circumference of a first circle. The magnetic beads chamber is disposed on a circumference of the second circle concentric with the first circle.
    Type: Application
    Filed: March 11, 2021
    Publication date: September 16, 2021
    Applicant: Enplas Corporation
    Inventor: Nobuya SUNAGA
  • LIQUID HANDLING DEVICE AND LIQUID HANDLING METHOD
    Publication number: 20210283604
    Abstract: A liquid handling device includes a plurality of first wells configured for a first sample; a first channel connected to the plurality of first wells; a plurality of second wells configured for a second sample; a second channel connected to the plurality of second wells; a plurality of processing agent wells configured for a processing agent configured to process the first sample and the second sample; a processing agent channel connected to the plurality of processing agent wells; and a common channel connected to the first channel, the second channel and the processing agent channel.
    Type: Application
    Filed: March 11, 2021
    Publication date: September 16, 2021
    Applicant: Enplas Corporation
    Inventors: Takumi YAMAUCHI, Nobuya SUNAGA
  • Emitter and drip irrigation tube
    Patent number: 11116152
    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: Grant
    Filed: November 2, 2017
    Date of Patent: September 14, 2021
    Assignee: ENPLAS CORPORATION
    Inventor: Kazuma Yanagisawa
  • SOCKET FOR ELECTRICAL COMPONENT
    Publication number: 20210273390
    Abstract: An IC socket (11) comprises contact pins (14) disposed in the socket body (13) to be disjunctive to terminals of the IC package (12), an opening and closing body (19A,19B) rotatably provided in the socket body (13), the opening and closing body (19A,19B) having a pressing member (23a,23b) for pressing a top surface of the IC package (12) accommodated on an accommodating surface portion (16d) of the socket body (13); and an operating member (20) for opening and closing the opening and closing body (19A,19B) disposed up and down movably with respect to the socket body (13). A first opening and closing body (19A) having a heat sink (23a) for pressing an entire of the top surface of the IC package (12) and a second opening and closing body (19B) having a block (23b) for pressing the heat sink (23a) are disposed at different positions mutually.
    Type: Application
    Filed: June 24, 2019
    Publication date: September 2, 2021
    Applicant: ENPLAS CORPORATION
    Inventor: Yuki UEYAMA
  • Surface light source device and display device
    Patent number: 11099429
    Abstract: A surface light source device includes a substrate, a plurality of light emitting devices and a light diffusion plate. Each light emitting device includes a light emitting element and a light flux controlling member. A cross section, perpendicular to the central axis of the light flux controlling member, of the emission surface is line-symmetric with respect to the X-axis and the Y-axis, and the cross section has the shortest length along the X-axis and the longest length along the Y-axis. For the light flux controlling member of one of the light emitting devices that is disposed closest to a corner of the light diffusion plate in plan view, a part having a largest curvature in the emission surface on the cross section of the emission surface is located closer to the X-axis than an intersection point of a light beam with the emission surface is.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: August 24, 2021
    Assignee: Enplas Corporation
    Inventor: Toshihiko Mochida
  • FLUID-HANDLING DEVICE AND FLUID-HANDLING SYSTEM
    Publication number: 20210252511
    Abstract: This fluid-handling device has: a first rotary member having a first protrusion that expands a diaphragm of a valve and closes off the valve, the first rotary member being capable of rotating about a rotational axis; a second rotary member disposed so as to surround the first rotary member, the second rotary member having a second protrusion that expands the diaphragm of the valve and closes off the valve, and being capable of rotating about the rotational axis independently from the first rotary member; and a plurality of rolling elements disposed between the first rotary member and the second rotary member, the plurality of rolling elements being in contact with the first rotary member and the second rotary member.
    Type: Application
    Filed: June 17, 2019
    Publication date: August 19, 2021
    Applicant: Enplas Corporation
    Inventor: Nobuya SUNAGA
  • Drive Gear and Driven Gear
    Publication number: 20210239185
    Abstract: A gear reduction mechanism (1) includes a drive gear (10) having a rotation axis (L1), and a driven gear (20) driven in mesh with the drive gear (10) and having a rotation axis (L2) that is noncoplanar with the rotation axis (L1). The drive gear (10) is provided with spiral teeth, each having a tooth trace of a spiral curve having a spiral center on the rotation axis (L1) and a constant radial pitch, when viewed in the direction of the rotation axis (L1). Furthermore, the tooth profile of the driven gear (20) is set, considering a tangent angle that changes momentarily as the drive gear (10) rotates.
    Type: Application
    Filed: May 13, 2019
    Publication date: August 5, 2021
    Applicant: ENPLAS CORPORATION
    Inventors: Toru Hagihara, Shuhei Masuda
  • Light emitting device having luminous flux control member with recess radially distant from a light incident surface
    Patent number: 11079628
    Abstract: A light emitting device has a light emitter defining an optical axis; and a luminous flux control member with an incident surface in a back surface and intersecting the optical axis, a reflection surface opposite the back surface, an emission surface connecting the back surface to the reflection surface, and a first recessed portion formed on the back surface farther from the optical axis than the incident surface and having a first inclined surface closer to the reflection surface with increasing distance from the optical axis, a front end of the first inclined surface such that a substantial portion of light emitted from the center region of the light emitter and reflected by the reflection surface do not strike the first inclined surface, and such that a substantial portion of light emitted from the light emitter and not reflected by the reflection surface strikes the first inclined surface.
    Type: Grant
    Filed: August 15, 2018
    Date of Patent: August 3, 2021
    Assignee: Enplas Corporation
    Inventors: Kyouhei Yamada, Masayo Takizawa
  • Emitter and drip irrigation tube
    Patent number: 11071260
    Abstract: An emitter forms a flow path that runs to a discharge part from a water collecting part for receiving an irrigation liquid in a tube. The flow path includes a flow rate control part which includes: an end surface including a concave inclined surface that faces a film for receiving the pressure of the liquid inside the tube; a hole that opens at the center of the flow volume control part and connects to the discharge part; and a groove crossing the inclined surface and running to the hole. When the film adheres to the inclined surface as a result of the pressure of the irrigation liquid inside the tube, the flow volume of the irrigation liquid inside the emitter is controlled so as to be a volume that can pass through the groove.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: July 27, 2021
    Assignee: ENPLAS CORPORATION
    Inventor: Masahiro Kidachi
  • Optical receptacle and optical module
    Patent number: 11067761
    Abstract: An optical receptacle has: a first optical surface, a first transmission part, a light separation part, a second optical surface and a third optical surface. The light separation part has a reflection part and a second transmission part. The first transmission part and two or more of a plurality of second transmission parts are present within an optical effectiveness region, where the optical effectiveness region is a region from a central axis to the radius of the larger of the first optical surface and the second optical surface, and the central axis is the optical axis of the light that impinges on the first optical surface and is emitted at the second optical surface.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: July 20, 2021
    Assignee: Enplas Corporation
    Inventors: Ayano Kon, Shimpei Morioka
  • EMITTER AND DRIP IRRIGATION TUBE
    Publication number: 20210204494
    Abstract: This emitter has an emitter body and a pedestal. The emitter body includes: a water intake part for introducing irrigation liquid; a pressure reducing flow passage groove which is for forming a pressure reducing flow passage which communicates with the water intake part and allows the irrigation liquid to flow out while reducing the pressure of the irrigation liquid; an accommodation part which communicates with the pressure reducing flow passage groove and into which the irrigation liquid flows while the pedestal is accommodated therein; and a flexible diaphragm part which approaches the pedestal upon receiving the pressure of the irrigation liquid inside a tube while the pedestal is accommodated in the accommodation part. The pedestal has through-holes for discharging the irrigation liquid that flowed into the accommodation part. The emitter body and the pedestal are connected through a hinge part.
    Type: Application
    Filed: May 22, 2019
    Publication date: July 8, 2021
    Applicant: Enplas Corporation
    Inventors: Kazuma YANAGISAWA, Koki ONO
  • EMITTER AND DRIP IRRIGATION TUBE
    Publication number: 20210204492
    Abstract: This emitter has an emitter main body comprising a first face, a second face disposed on the opposite side from the first face, and a side face connecting the first face and the second face; a water intake unit for taking in irrigation liquid disposed on the first face side; a discharge unit for discharging irrigation liquid disposed on the second face side; a flow path that connects the water intake unit and the discharge unit and allows the irrigation liquid to pass therethrough; and a protrusion disposed on the side face.
    Type: Application
    Filed: September 20, 2018
    Publication date: July 8, 2021
    Applicant: Enplas Corporation
    Inventor: Masahiro KIDACHI
  • Profile modification for planetary gear device gear teeth
    Patent number: 11054013
    Abstract: A gear tooth for a gear of a planetary gear device may include a profile modification that alters a profile of the gear tooth to reduce wear and noise. Aspects of the profile modification may include a planar surface that connects a tip surface of the gear tooth with a first or second side of the gear tooth. Other aspects of the profile modification may include a curved surface connecting a tip surface of the gear tooth with a first or second side of the gear tooth. The gear tooth may also include non-constant profile width as measured between the first side and the second side in a gear thickness direction extending between the top and bottom surfaces of the gear. Aspects of gear teeth with either or both the profile modification and non-constant profile width may reduce tooth wear and gear noise during operation of the planetary gear device.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: July 6, 2021
    Assignee: Enplas Corporation
    Inventors: Koki Hisai, Kazuki Yamada
  • Contact pin and electric component socket
    Patent number: 11050178
    Abstract: Embodiments implement rotation stoppage for a contact pin at a lower cost, in which the contact pin is disposed in a socket main body to establish electrical conduction between an IC package and a wiring board. The contact pin has a barrel, an upper contact member, a lower contact member, and a coil spring. The barrel has a flange that has rotation stoppers protruding in the horizontal direction. When the contact pin is disposed in a socket main body, the rotation stoppers of the flange are brought into contact with the socket main body, whereby the barrel is restrained from rotating relative to the socket main body.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: June 29, 2021
    Assignee: ENPLAS CORPORATION
    Inventor: Akira Miura
  • Emitter and drip irrigation tube
    Patent number: 11044856
    Abstract: An emitter (120) adjusts the flow rate of a liquid for irrigation to be discharged from a discharge opening (112) of a tube (110) so that, according to pressure of the liquid for irrigation within the tube (110) received by a second membrane (153), the flow rate is made smaller as the pressure becomes greater in a prescribed range of pressure. The emitter (120) is constituted by mating a first member (130) having a bottom surface with a shape that follows along the inside wall surface of the tube (110) and a second member (150) that includes the second membrane (153) and is mated to the first member (130).
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: June 29, 2021
    Assignee: ENPLAS CORPORATION
    Inventor: Masahiro Kidachi