R-stack arrester

{
  "publication_number": "US9728307B2",
  "country": "US",
  "kind": "B2",
  "title": "R-stack arrester",
  "abstract": "An elbow arrester with a T-body is disclosed capable of coupling with an apparatus for protection from transient over voltage, and coupling with additional cable accessories, without having to loosen the initial connection with the coupled apparatus. The elbow body of the T-body arrester has a first portion, and a second portion protruding from an intermediate section of the first portion to define a T-body. A receiving feature is located within the first portion extending towards a first end, while a male feature is coupled to a second end of the first portion, opposite from the receiving feature. A coupling fastener is integrally molded into the first portion, providing for an apparatus coupled to the coupling fastener to be decoupled without loosening the connection of another apparatus connected to the T-Body elbow. Further, decoupling the other apparatus does not loosen the apparatus coupled to the coupling fastener.",
  "claims": [
    "1. A T-body elbow arrester, comprising: an elbow body having a first longitudinally extending portion and a second longitudinally extending portion, wherein the second portion protrudes substantially perpendicular from an intermediate section of the first portion to define a T-body; a surge arrester portion located within the second portion of the elbow body; a receiving feature located within the first portion of the elbow body extending from the intermediate section towards a first end of the first portion of the elbow body; a male feature integrally molded to a second end of the first portion of the elbow body, opposite from the receiving feature; and an integral coupling fastener, wherein an apparatus coupled to a first end of the coupling fastener can independently be decoupled without loosening the connection of another apparatus inserted into the receiving feature and connected to a second end of the coupling fastener.",
    "2. The elbow arrester of claim 1, wherein the male feature is a 600 A deadbreak tap and wherein the surge arrester portion comprises a metal oxide varistor (MOV) arrester block stack.",
    "3. The elbow arrester of claim 1, wherein the receiving feature is configured to receive a male bushing.",
    "4. The elbow arrester of claim 1, wherein the integral coupling fastener is a female threaded section.",
    "5. The elbow arrester of claim 1, wherein the integral coupling fastener is positioned within an end of the male feature.",
    "6. An arrester, comprising: a T-body comprising an integral mold of a male bushing, a receiving feature, a surge arrester portion, and a coupling fastener; wherein the male bushing and the receiving feature are positioned substantially parallel along a first portion of the T-body; wherein the coupling fastener is molded within the first portion of the T-body; wherein a surge arrester is removably secured to the surge arrester portion of the T-body; wherein a first apparatus coupled to a first end of the coupling fastener can be decoupled without loosening a second apparatus inserted into the receiving feature and coupled to a second end of the coupling fastener; wherein the first apparatus coupled to the first end of the coupling fastener can be decoupled without loosening the surge arrester removably secured to the surge arrester portion; wherein the second apparatus coupled to the second end of the coupling fastener can be decoupled without loosening the first apparatus coupled to the first end of the coupling fastener; and wherein the second apparatus coupled to the second end of the coupling fastener can be decoupled without loosening the surge arrester removably secured to the surge arrester portion.",
    "7. The elbow arrester of claim 6, wherein the male bushing is a 600 A deadbreak tap and wherein the surge arrester portion comprises a metal oxide varistor (MOV) arrester block stack.",
    "8. The elbow arrester of claim 6, wherein the coupling fastener is positioned within an end of the male feature.",
    "9. The elbow arrester of claim 1, wherein the integral coupling fastener is positioned within the intermediate section.",
    "10. The elbow arrester of claim 6, wherein the coupling fastener is positioned within an intermediate section of the T-body."
  ],
  "description_excerpt": "The present invention generally relates to the field of surge arrester and, more particularly, to a T-body arrester used for underground and overhead electrical systems.\n\nConventional surge arresters protect electrical systems from transient over-voltage surges from lightning, switching, and the like. Traditionally, a 200 Ampere (200 A) elbow arrester configuration is used to address the surges. In this configuration, the bushing of the desired apparatus designed to protect against the surges is connected to a first portion of the elbow connection. An arrester, typically consisting of metal oxide varistor (MOV) elements, is positioned in the second portion of the elbow connector. The MOV elements and bushing are electrically connected in an intermediate portion of the first part of the elbow connection. A ground connecter - which is positioned at an end of the second portion of the elbow connector - is electrically connected to the MOV on a first end and coupled to an external ground on a second end. Therefore, a voltage is applied across the MOV elements from the bushing connection of the apparatus and ground. At steady state, the MOV elements have a relatively high impedance, however as the voltage applied across the elements increases, such as from a lightning surge, the impedance of the MOV elements decreases until a breakdown voltage, wherein the impedance rapidly decreases towards zero. As a result, the MOV elements become highly conductive and serve to conduct transient current from the surge voltage to ground, thereby protecting the apparatus.",
  "cpc": [
    "H01C 7/12",
    "H01C 1/022",
    "H01R 13/53",
    "H02G 13/80"
  ],
  "ipc": [
    "H02H 9/04",
    "H01C 7/12",
    "H02H 1/00"
  ],
  "assignees": [
    "Richards Manufacturing Co Sales Inc"
  ],
  "inventors": [
    "Glenn J. Luzzi",
    "Jeffrey J. Madden"
  ],
  "filing_date": "2013-03-15",
  "publication_date": "2017-08-08",
  "grant_date": "2017-08-08",
  "priority_date": "2013-03-15",
  "application_number": "US-201313844033-A",
  "family_id": "51526102",
  "cited_by_count": 11,
  "citations": [
    "US5114357A",
    "US7381103B2",
    "US7503785B2",
    "US7958631B2",
    "US20110287652A1",
    "US20140268471A1"
  ]
}