Patents Assigned to Nippon Pillar Packing Co., Ltd.
  • Patent number: 11014336
    Abstract: A circuit board according to the present invention includes: a first layer containing a fiber base material, and fusible fluororesin with which the fiber base material is impregnated; and second layers containing non-fusible fluororesin that are arranged on the two surfaces of the first layer.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: May 25, 2021
    Assignee: NIPPON PILLAR PACKING CO., LTD.
    Inventors: Takeshi Okunaga, Miyuki Kobayashi, Tatsuya Tamaki, Kenpei Yamasaki, Tomoki Hayashi
  • Publication number: 20210148467
    Abstract: A mechanical seal configured to shield and seal a high pressure fluid region and an atmospheric region by a relative rotation of the contact portion between the end face of a first sealing ring provided on a rotary shaft and the end face of a second sealing ring provided in a seal case, wherein a lubrication groove that allows the contact portion to communicate with the high pressure fluid region is formed in the end face of the first sealing ring, and a diamond film is formed on this end face including the lubrication groove.
    Type: Application
    Filed: June 19, 2018
    Publication date: May 20, 2021
    Applicant: Nippon Pillar Packing Co., Ltd.
    Inventors: Takashi NISHI, Yuji SATO
  • Publication number: 20210123429
    Abstract: A rolling diaphragm pump that can inhibit an increase in cost with a simple configuration is provided.
    Type: Application
    Filed: November 6, 2018
    Publication date: April 29, 2021
    Applicant: NIPPON PILLAR PACKING CO., LTD.
    Inventors: Kazukiyo TESHIMA, Daisuke URATA
  • Publication number: 20210108747
    Abstract: A fitting assembly for fluid device is provided, which can reduce space for installation of fluid devices. The assembly includes a first port, a second port, a first annular member, a second annular member, and a connector. The first port is annular and installed at a first fluid device to be connected with its first fluid channel. The second port is annular and installed at a second fluid device to be connected with its second fluid channel. The first annular member is installed at the first port and has a first coupler. The second annular member is installed at the second port and has a second coupler to be coupled with the first coupler to fix the second annular member to the first annular member. The connector is installed between the first port and the second port and seals gaps between the connector and the first and second ports.
    Type: Application
    Filed: June 15, 2018
    Publication date: April 15, 2021
    Applicant: NIPPON PILLAR PACKING CO., LTD.
    Inventors: Toshihide IIDA, Tatsuya FUJII, Katsunori SUGITA, Takahito KONISHI, Tomoyuki KOIKE
  • Publication number: 20210088141
    Abstract: A structure for mounting a gasket on a block includes a block with a fluid channel and an annular gasket surrounding an opening of the fluid channel. The block has an annular inner wall and an annular outer wall. The annular inner wall is made of resin and located radially outside the opening of the fluid channel. The annular outer wall is made of resin and located radially outside the annular inner wall. The annular inner wall and the annular outer wall allow an axial side of the gasket to be press-fitted therebetween and are elastically deformable in their radial directions.
    Type: Application
    Filed: February 18, 2019
    Publication date: March 25, 2021
    Applicant: NIPPON PILLAR PACKING CO., LTD.
    Inventors: Atsushi NAKANO, Toshihide I IDA, Tomoyuki KOIKE, Tomohiro ADACHI
  • Patent number: 10948083
    Abstract: A structure allowing a gasket to be mounted on a fluid device is provided. The gasket includes an annular attaching portion that has a first slope at an axial end. The fluid device includes an annular attached portion with a second slope that contacts the first slope. The first slope at least partially includes a contact area that contacts the second slope to seal a gap between the first slope and the second slope. The contact area has an annular bulge protruding toward the second slope in contrast to other portions of the first slope so that the bulge is the earliest contact portion with the second slope when the contact area is brought into contact with the second slope.
    Type: Grant
    Filed: May 1, 2019
    Date of Patent: March 16, 2021
    Assignee: NIPPON PILLAR PACKING CO., LTD.
    Inventors: Atsushi Nakano, Tomoyuki Koike, Tomohiro Adachi, Kazukiyo Teshima, Motoaki Naruo
  • Publication number: 20210060902
    Abstract: A circuit board according to the present invention includes: a first layer containing a fiber base material, and fusible fluororesin with which the fiber base material is impregnated; and second layers containing non-fusible fluororesin that are arranged on the two surfaces of the first layer.
    Type: Application
    Filed: July 19, 2018
    Publication date: March 4, 2021
    Applicant: NIPPON PILLAR PACKING CO., LTD.
    Inventors: Takeshi OKUNAGA, Miyuki KOBAYASHI, Tatsuya TAMAKI, Kenpei YAMASAKI, Tomoki HAYASHI
  • Publication number: 20210054932
    Abstract: A gasket for connecting flow passage holes formed in two piping blocks, respectively, includes, at both sides in an axial direction, a pair of tubular radially outer press-fitting portions configured to be respectively press-fitted into tubular radially outer sealing grooves formed, radially outward of the flow passage holes, on end surfaces of both piping blocks, and a sealing peripheral surface configured to come into close contact with an outer peripheral surface of the radially outer sealing groove to exert a sealing function is formed on an outer peripheral surface of each radially outer press-fitting portion. A groove portion is formed on an outer peripheral surface of the gasket such that, in a state where either one of the pair of radially outer press-fitting portions is press-fitted into a sealing groove of the piping block, the groove portion is open axially outward of the end surface of the piping block.
    Type: Application
    Filed: February 25, 2019
    Publication date: February 25, 2021
    Applicant: NIPPON PILLAR PACKING CO., LTD.
    Inventors: Tomoyuki KOIKE, Atsushi NAKANO, Tomohiro ADACHI, Toshihide IIDA
  • Patent number: 10927954
    Abstract: A structure allowing a gasket to be mounted on a fluid device is provided. The gasket includes an annular attaching portion that has a first slope at an axial end. The fluid device includes an annular attached portion with a second slope that contacts the first slope. The first slope at least partially includes two or more pressing areas, which are partitioned by annular steps. The second slope at least partially includes two or more pressed areas, which are partitioned by annular steps to fit the steps between the pressing areas.
    Type: Grant
    Filed: May 1, 2019
    Date of Patent: February 23, 2021
    Assignee: NIPPON PILLAR PACKING CO., LTD.
    Inventors: Tomohiro Adachi, Atsushi Nakano, Tomoyuki Koike, Kazukiyo Teshima, Motoaki Naruo
  • Patent number: 10907629
    Abstract: A diaphragm pump includes a reciprocable diaphragm, an actuator including a motor, and a control device. The control device resets an origin of the diaphragm in a reciprocating direction, when detecting a step-out of the motor. After resetting the origin, the control device activates the actuator to move the diaphragm to the origin.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: February 2, 2021
    Assignee: NIPPON PILLAR PACKING CO., LTD.
    Inventors: Kazukiyo Teshima, Naoto Yamada, Motoaki Naruo
  • Publication number: 20200408305
    Abstract: A gasket-mounting structure includes a mounting member and a gasket. The mounting member includes a first base, an outer sleeve protruding from the first base, an inner sleeve protruding from the first base in the same direction of the outer sleeve radially inside the outer sleeve, and a groove surrounded by the first base, the outer sleeve, and the inner sleeve. The gasket includes an annular second base, an annular outer protrusion extending from the second base to be pressed in the groove, and an annular inner protrusion extending from the second base to be axially pressed on the inner sleeve radially inside the outer protrusion such that the inner sleeve is radially placed between the outer protrusion and the inner protrusion.
    Type: Application
    Filed: January 15, 2019
    Publication date: December 31, 2020
    Applicant: NIPPON PILLAR PACKING CO., LTD.
    Inventors: Tomohiro ADACHI, Toshihide IIDA, Tomoyuki KOIKE, Atsushi NAKANO
  • Publication number: 20200393068
    Abstract: A structure for mounting a gasket on a block includes a block with a fluid channel and a gasket surrounding an opening of the fluid channel. The gasket has a sealing tip, which is an annular wall made of resin and located radially outside the opening of the fluid channel. The sealing tip is press-fitted in the block and is elastically deformable in its radial direction.
    Type: Application
    Filed: January 15, 2019
    Publication date: December 17, 2020
    Applicant: NIPPON PILLAR PACKING CO., LTD.
    Inventors: Atsushi NAKANO, Toshihide I IDA, Tomoyuki KOIKE, Tomohiro ADACHI
  • Patent number: 10830226
    Abstract: A diaphragm pump has: a housing; a piston; a shaft; a rolling diaphragm, which is configured so that a lid portion reciprocally moves integrally with the piston; a driving device, which can convert rotational movement of a motor section to linear movement, and output the linear movement from an output axle to the shaft; a guiding member; and a restricting mechanism. The guiding member is placed on another axial end side of an interior of the housing with respect to the piston, attached to the housing, and able to guide the shaft movably in the axial direction. The restricting member is disposed in the housing and between the guiding member and the shaft, and able to restrict rotation of the shaft about the axis while allowing reciprocal movement in the axial direction.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: November 10, 2020
    Assignee: NIPPON PILLAR PACKING CO., LTD.
    Inventors: Kazukiyo Teshima, Motoaki Naruo
  • Publication number: 20200347936
    Abstract: A yarn includes elongated pieces of expanded graphite sheet and a tubular member made of knitted or braided fibers. In the tubular member, the pieces of expanded graphite sheet are twisted and packed. The yarns are knitted, or bundles of the yarns are twisted to form a gland packing.
    Type: Application
    Filed: January 15, 2019
    Publication date: November 5, 2020
    Applicant: NIPPON PILLAR PACKING CO., LTD.
    Inventors: Masaru FUJIWARA, Misato IZUKA, Ryoji HAMAGUCHI, Naoyuki SAWAMOTO
  • Patent number: 10823291
    Abstract: A mechanical seal includes a rotating ring on a rotary shaft, a stationary ring facing the rotating ring in an axial direction, and an elastic means configured to press the rotating ring or the stationary ring toward each other to contact opposed sealing surfaces of the rotating ring and the stationary ring. The mechanical seal partitions a first space and a second space. The first space and the second space are located in the axial direction with the sealing surface interposed therebetween. The stationary ring is made of a sintered compact of SiC. A diamond film is formed on a sealing surface of the stationary ring facing the rotating ring. A diamond film continuous with the diamond film of the sealing surface is formed on an outer circumferential surface or an inner circumferential surface of the stationary ring. Volume resistivity of the stationary ring is 101 to 104 ?·cm.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: November 3, 2020
    Assignee: NIPPON PILLAR PACKING CO., LTD.
    Inventors: Hiroyuki Sakakura, Kenshi Fujita
  • Patent number: 10827604
    Abstract: A method for producing a high frequency circuit board includes forming an antenna pattern on an upper surface of the provisional substrate. The method includes performing hot-press in a state where a thermoplastic resin and a provisional conductor are stacked on the upper surface of the provisional substrate, to form a first dielectric layer portion covering the antenna pattern. The method includes removing the provisional conductor and shaving the first dielectric layer portion to form a cavity to house an electronic component. The method includes mounting the electronic component on the antenna pattern in the cavity. The method includes performing hot-press in a state where a thermosetting resin and a ground conductor are stacked at an opening side of the cavity in the first dielectric layer portion, to form a second dielectric layer portion to embed the electronic component in the cavity. The method includes removing the provisional substrate.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: November 3, 2020
    Assignee: NIPPON PILLAR PACKING CO., LTD.
    Inventors: Takeshi Okunaga, Akira Nakatsu, Kojiro Iwasa, Yusuke Natsuhara
  • Patent number: 10801650
    Abstract: A pipe joint, made of synthetic resin, including: an inner ring; a joint body having an annular sealing groove and a male screw portion formed on an outer circumference; a union nut having a female screw portion formed on an inner circumference to be tightened onto the male screw portion of the joint body, such that a first opposing surface is formed in the joint body to be perpendicular to an axial direction, and a second opposing surface is formed in the union nut to oppose the first opposing surface. An engagement projection is provided in one of the first opposing surface and the second opposing surface. An engagement recess is provided in the other of the first opposing surface and the second opposing surface such that the engagement projection engages with the engagement recess when the union nut has been tightened up to an appropriate position.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: October 13, 2020
    Assignee: Nippon Pillar Packing Co., Ltd.
    Inventors: Makoto Fujii, Toshihide Iida
  • Publication number: 20200318632
    Abstract: A diaphragm pump includes a reciprocable diaphragm, an actuator including a motor, and a control device. The control device resets an origin of the diaphragm in a reciprocating direction, when detecting a step-out of the motor. After resetting the origin, the control device activates the actuator to move the diaphragm to the origin.
    Type: Application
    Filed: June 15, 2017
    Publication date: October 8, 2020
    Applicant: NIPPON PILLAR PACKING CO, LTD
    Inventors: Kazukiyo TESHIMA, NAOTO YAMADA, MOTOAKI NARUO
  • Patent number: 10792888
    Abstract: Provided is a coating base material having a new configuration capable of enhancing the durability of a coating regardless of the adhesion strength of a primer. A coating base material 1 whose surface is subjected to application of a coating includes: a mesh-like valley portion 2 formed on the surface; and a plurality of island portions 3 formed on the surface and surrounded by the valley portion 2. Each island portion 3 has a crater-like recess 4 formed on an upper surface thereof.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: October 6, 2020
    Assignee: NIPPON PILLAR PACKING CO., LTD.
    Inventors: Toshihide Iida, Noboru Tamaki, Masateru Yamada
  • Publication number: 20200260572
    Abstract: A method for producing a high frequency circuit board includes forming an antenna pattern on an upper surface of the provisional substrate. The method includes performing hot-press in a state where a thermoplastic resin and a provisional conductor are stacked on the upper surface of the provisional substrate, to form a first dielectric layer portion covering the antenna pattern. The method includes removing the provisional conductor and shaving the first dielectric layer portion to form a cavity to house an electronic component. The method includes mounting the electronic component on the antenna pattern in the cavity. The method includes performing hot-press in a state where a thermosetting resin and a ground conductor are stacked at an opening side of the cavity in the first dielectric layer portion, to form a second dielectric layer portion to embed the electronic component in the cavity. The method includes removing the provisional substrate.
    Type: Application
    Filed: July 2, 2019
    Publication date: August 13, 2020
    Applicant: NIPPON PILLAR PACKING CO., LTD.
    Inventors: Takeshi OKUNAGA, Akira NAKATSU, Kojiro IWASA, Yusuke NATSUHARA