Patents Assigned to Elna Co., Ltd.
  • Patent number: 12512261
    Abstract: In a chip type capacitor formed by attaching a seat plate to a capacitor, generation of voids or cracks due to flux gas generated at the time of soldering is suppressed. When providing auxiliary terminals for increasing the soldering strength on a seat plate for chipping, which enables a lead same direction type capacitor to be surface mounted, a gas release groove, preferably formed as a slit to release flux gas generated at the time of soldering, is formed on each of the auxiliary terminals.
    Type: Grant
    Filed: March 30, 2022
    Date of Patent: December 30, 2025
    Assignee: ELNA CO., LTD.
    Inventors: Tadahiro Nakamura, Kaori Matsumura, Naozumi Kimura
  • Patent number: 9842703
    Abstract: An aluminum electrolytic capacitor includes a capacitor element having lead terminals; an armor case housing the capacitor element; and a rubber seal having a terminal passage hole for the lead terminals drilled therein and mounted on an opening section of the armor case. A hole diameter of a lead wire passage hole is smaller than an outside diameter of an outside lead wire, and a conical guide surface of progressively smaller diameter is formed between a round bar mating hole and the lead wire passage hole within a terminal passage hole. A passage guide part of progressively smaller diameter from a lead wire body is integrally furnished at an end of the outside lead wire so as to have a smaller diameter than the hole diameter of the lead wire passage hole, forming a conical sloped surface having a predetermined angle on a peripheral surface of the passage guide part.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: December 12, 2017
    Assignee: ELNA CO., LTD.
    Inventors: Hiroshi Yanaka, Naoto Iwano, Kaori Matsumura, Hikaru Santsuka, Naozumi Kimura, Hidekazu Mizushima
  • Publication number: 20170004926
    Abstract: An aluminum electrolytic capacitor includes a capacitor element having lead terminals; an armor case housing the capacitor element; and a rubber seal having a terminal passage hole for the lead terminals drilled therein and mounted on an opening section of the armor case. A hole diameter of a lead wire passage hole is smaller than an outside diameter of an outside lead wire, and a conical guide surface of progressively smaller diameter is formed between a round bar mating hole and the lead wire passage hole within a terminal passage hole. A passage guide part of progressively smaller diameter from a lead wire body is integrally furnished at an end of the outside lead wire so as to have a smaller diameter than the hole diameter of the lead wire passage hole, forming a conical sloped surface having a predetermined angle on a peripheral surface of the passage guide part.
    Type: Application
    Filed: August 18, 2016
    Publication date: January 5, 2017
    Applicant: ELNA CO., LTD.
    Inventors: Hiroshi YANAKA, Naoto IWANO, Kaori MATSUMURA, Hikaru SANTSUKA, Naozumi KIMURA, Hidekazu MIZUSHIMA
  • Patent number: 9496091
    Abstract: An aluminum electrolytic capacitor includes a capacitor element having lead terminals; an armor case housing the capacitor element; and a rubber seal having a terminal passage hole for the lead terminals drilled therein and mounted on an opening section of the armor case. A hole diameter of a lead wire passage hole is smaller than an outside diameter of an outside lead wire, a conical guide surface of progressively smaller diameter is formed between a round bar mating hole and the lead wire passage hole within a terminal passage hole. A passage guide part of progressively smaller diameter from a lead wire body is integrally furnished at an end of the outside lead wire so as to have a smaller diameter than the hole diameter of the lead wire passage hole, forming a conical sloped surface having a predetermined angle on a peripheral surface of the passage guide part.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: November 15, 2016
    Assignee: ELNA CO., LTD.
    Inventors: Hiroshi Yanaka, Naoto Iwano, Kaori Matsumura, Hikaru Santsuka, Naozumi Kimura, Hidekazu Mizushima
  • Publication number: 20150016025
    Abstract: A lead terminal is passed through a terminal passage hole of a rubber seal, without imposing an excessive burden such that the characteristics of the capacitor element would be degraded, and while maintaining a state of reliable isolation from the outside air. In an aluminum electrolytic capacitor in which the hole diameter f2 of a lead wire passage hole (52) is smaller than the outside diameter f1 of an outside lead wire (22), the outside lead wire (22) being forcibly passed to the outside through lead wire passage hole (52), a conical guide surface (53) of progressively smaller diameter is formed between a round bar mating hole (51) and the lead wire passage hole (52) within a terminal passage hole (5).
    Type: Application
    Filed: April 27, 2012
    Publication date: January 15, 2015
    Applicant: ELNA CO., LTD.
    Inventors: Hiroshi Yanaka, Naoto Iwano, Kaori Matsumura, Hikaru Santsuka, Naozumi Kimura, Hidekazu Mizushima
  • Patent number: 5942885
    Abstract: The power compensating device for battery by this invention comprises a battery 10, a cable 13 that connects this battery 10 to a load 11, a compensating capacitor 12 inserted into the input side of the load 11, a voltage detecting circuit 27 that detects the fluctuation of the input voltage to the load 11, a comparison circuit 28 that compares detected value with referential value, a switching circuit 25 to be controlled by a comparison output, and an auxiliary capacitor 26 connected in parallel, via the switching circuit 25, with the compensating capacitor 12 to sufficiently suppress voltage drop. To this power compensating device it is possible to add a display circuit 29 that displays multistagedly the voltage fluctuation to know visually the effects of voltage fluctuation suppression.
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: August 24, 1999
    Assignee: Elna Co., Ltd.
    Inventors: Kunio Nemoto, Masaaki Imamura
  • Patent number: D418812
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: January 11, 2000
    Assignee: Elna Co., Ltd.
    Inventor: Masaaki Imamura