US3777046A - Elastomeric spacer and/or damper for electrical conductors - Google Patents

Elastomeric spacer and/or damper for electrical conductors Download PDF

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Publication number
US3777046A
US3777046A US00280437A US3777046DA US3777046A US 3777046 A US3777046 A US 3777046A US 00280437 A US00280437 A US 00280437A US 3777046D A US3777046D A US 3777046DA US 3777046 A US3777046 A US 3777046A
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US
United States
Prior art keywords
cavity
section
axial
shaft
elastomeric member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US00280437A
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English (en)
Inventor
D Schiavone
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pullman Co
Original Assignee
Gould Inc
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Filing date
Publication date
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Publication of US3777046A publication Critical patent/US3777046A/en
Assigned to IMPERIAL CLEVITE INC., A CORP. OF PA reassignment IMPERIAL CLEVITE INC., A CORP. OF PA ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: GOULD INC., A CORP. OF DE
Assigned to CLEVITE INDUSTRIES INC., A CORP. OF DE. reassignment CLEVITE INDUSTRIES INC., A CORP. OF DE. MERGER (SEE DOCUMENT FOR DETAILS). Assignors: IMPERIAL CLEVITE INC., A PA. CORP. (MERGED INTO)
Assigned to PULLMAN COMPANY, THE, A DE. CORP. reassignment PULLMAN COMPANY, THE, A DE. CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CLEVITE INDUSTRIES INC.,
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00—Overhead installations of electric lines or cables
    • H02G7/12—Devices for maintaining distance between parallel conductors, e.g. spacer
    • H02G7/125—Damping spacers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32114—Articulated members including static joint
    • Y10T403/32213—Articulate joint is a swivel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32975—Rotatable
    • Y10T403/32983—Rod in socket
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/45—Flexibly connected rigid members
    • Y10T403/455—Elastomer interposed between radially spaced members

Definitions

  • This invention relates generally to devices for controlling the movement of overhead electrical transmission lines or conductors.
  • the present invention is adapted to be employed as a line damper or line spacer-damper.”
  • the function of the former is solely to dampen the movement of a single line, whereas the function of the latter serves to dampen the movement of and maintain two or more bundled lines at a predetermined distance.
  • the present invention is intended to provide a device in which the compression of the elastomeric member due to the movement of the arm is reduced and a relationship that may be termed rolling contact with soft deflection is established.
  • Such rolling contact provides a relatively soft spring rate when conical or axial movement of the hub relative to the hub or weight takes place.
  • a further object of the present invention is to provide a device in which the likelihood of disintegration of the elastomeric member is minimized; however, if and when such disintegration should take place, the arm will be prevented from completely leaving the hub or damping body by means of a fail safe stop.
  • the device includes a rigid multi-body member formed with an annular cavity in the periphery thereof, the walls defining the cavity have a radial enlargement located intermediate to the axial ends and establishing in axial cross-section a first constricted area which is curved in an axial direction.
  • a rigid arm extends with a concavely formed shaft-like portion articulately into the cavity with its axis substantially perpendicular to the plane of the constricted area. The arm has at the opposite end a clamp for receiving the electrical conductor.
  • a generally tubular elastomeric member is mounted on the shaft-like portion and is interposed under radial compression between the latter and the walls of the cavity.
  • the outside surface of the axially central portion of the elastomeric member has a curvature approximating a mirror image of the radial enlargement of the cavity.
  • FIG. 1 is a side elevational view, partly in section, of a multi-arm conductor spacer hub
  • FIG. 2 is a view similar to FIG. 1 showing a triangular hub with a plurality of spacer arms;
  • FIG. 3 is a view similar to FIG. 1 illustrating a line damper
  • FIG. 4 is an axial section of the elastomeric member in its free state.
  • FIGS. 1 to 3 there is shown in FIGS. 1 to 3 an arm 10 having at one axial end a conventional clamp 12 provided with hinged jaws 12a, 12b for receiving and holding a conductor (not shown) in an elastomeric member 14.
  • the opposite end of the arm 10 articulately extends into a cavity 16 formed in a rigid multi-body member.
  • multi-body member is used herein to denote hubs 18 and 19 each adapted to receive a plurality of arms 10, as well as a substantially solid damping body 20, the former being illustrated in FIGS. 1 and 2, and the latter in FIG. 3.
  • the multi-body member (18, 19, 20) is composed of two or more plates or shells which are secured together with screws, bolts or the like, and in assembled condition establish the annular cavity 16 in the periphery thereof.
  • the wall or walls 22 of the cavity 16 define an opening which is generally cylindrical and of uniform diameter except that intermediate to the axial ends (one end being the solid wall 24 and the other end being formed by the mouth 26 of the cavity 16) there is formed a radial enlargement 28 which establishes in axial cross-section a first constricted area
  • the radial enlargement 28 is curved in an axial direction and is located proximate to the longitudinal center of the cavity 16 and its diameter increases from its smallest diameter toward the opposite axial ends.
  • the cavity defines another radial constriction, see 30, the latter being formed close to the mouth 26 of cavity 16.
  • the second enlargement is preferably also circumferentially or peripherally continuous, although such continuity is not essential to carry out the function of the second constricted area.
  • That portion of the arm 10 which extends into the cavity 16 is shaft-like, see 32, and its longitudinal axis is arranged in its unbiased state (i.e., without being under the influence of wind forces) substantially perpendicular to the plane of the first constricted area formed by radial enlargement 28..
  • the shaft-like portion 32 of arm 10 forms in axial cross-section a substantially concave outside surface which is generally in overall symmetrical alignment with the enlargement 28, which is to say, that the smallest inside diameter of the enlargement 28 coincides with or is juxtaposed to the smallest outside diameter of the shaft-like portion 32.
  • the shaft-like portion 32 terminates within the cavity with an enlarged flange or outwardly flared rim 34 whose maximum outside diameter at least equals or exceeds the smallest outside diameter of the enlargement 28 so as to preclude the arm from disengaging itself from the multi-body member 18, 19, 20.
  • the flange 34 thus provides a metal to metal fail safe contact.
  • the axial extensions or segments of the shaft-like portion 32 generally located within the cavity 16 comprise an axially central segment 36a, and two oppositely contiguous segments 36b and 36c. Segment 36a has a substantially uniform diameter while segments 36b and 36c decrease in outside diameter towards the central segment.
  • the segment 360 faces the radial enlargement 30.
  • the two parts are dimensioned in such a manner so that the inside diameter of the enlargement 30 is substantially greater than the outside diameter of the segment 36c.
  • the enlargement functions to limit the maximum conical movement of the arm by serving as a metal to metal stopper.
  • an elastomeric member 38 mounted on the shaft-like portion 32 and more particularly segments 36a, 36b and 36c is an elastomeric member 38.
  • the member 38 is shown in its normal situ interposed under radial compression between the walls of the cavity 16 and the portion 32.
  • the FIG. 4 shows the member in its relaxed or free state.
  • the elastomeric member 38 is generally tubular and the inner surface is of substantially uniform diameter while the outer radial surface can be divided again, for convenience of description, into three segments, viz. 40a, 40b and 40c.
  • the opposite axial end segments, see 40a and 400, are outwardly flared in their free and assembled state while the intermediate segment 40b is curved substantially in a mirror image to the curved enlargement 28.
  • the curved surface 40b is arranged between and substantially contiguous to the flared segments 40a and 400 so as to give the appearance of a small corrugated part.
  • the curvature of the flared segments 40a and 40c begins at the axial end faces proximate to one half of the radial thickness of the elastomeric member.
  • the end face 42 axially recedes and then merges into the curvature of the flared surface.
  • one end face 42 abuts enlarged end or rim 34.
  • the outside diameter of the flared segments 40a and 40c is greater than the inside diameter of the enlargement 28 to effect that the outer surface of the member 38 hugs the enlargement 28 and permits a rolling contact (in a limited sense) between the contact surfaces.
  • the member 38 is generally symmetric. When viewed from the mid point or longitudinal center, the smallest outside diameter is located close to this center.
  • the arm with or without member 38 cannot simply be inserted into the cavity 16.
  • the body l8, 19 is a multi-section plate or the like.
  • the member 38 is first forced over the shaft-like portion (36a, 36b, 36c) and thereafter the individual plates (not shown as such) are assembled around the latter and are then secured together. This eliminates having to mold the member 38 in two pieces (semi-cylindrical) as is frequently the practice in the prior art.
  • Device for spacing two or more conductors and damping the movement thereof, or for damping the movement of individual conductors, of an overhead electrical transmission line comprising:
  • a rigid multi-body member formed with an annular cavity in the periphery thereof, the walls defining the cavity having a radial enlargement located intermediate to the axial ends and establishing in axial cross-section a first constricted area which is curved in an axial direction;
  • a rigid arm having at one end a clamping means for receiving a conductor and at the other end being provided with a shaft-like portion extending articulately into said cavity with its longitudinal axis substantially perpendicular to the plane of the constricted area;
  • said shaft-like portion forming in axial cross-section a substantially concave outside surface, said portion being arranged in said cavity generally in symmetrical alignment to the constricted cross-section an including an enlarged flange whose outside diameter exceeds the inside diameter of said constricted cross-section;
  • a device wherein said cavity is formed with a second constricted cross-section, said second cross-section being located proximate to the periphery of the said body member, the inside diameter of said second constricted cross-section being substantially greater than the outside diameter of the shaft-like portion except for said enlarged flange.
  • a device wherein the enlargement defining the first constricted cross-section substantially gradually decreases from the smallest inside diameter towards the opposite axial ends.
  • said shaftlike portion has an axially central segment with adjacent axial segments on opposite sides of the central segment decreasing in outside diameter towards said central segment.
  • a device wherein the smallest diameter of said outer surface between the axial opposed ends coincides approximately with the axial center of the elastomeric member.
  • a device according to claim 13 wherein one axial end of said elastomeric member bears against said enlarged flange.
  • a device wherein said rigid multi-body member is a two shell substantially solid weight secured together.
  • said rigid multi-body member is a two shell hub adapted for re ceiving a plurality of said shaft-like portions.
  • Device for spacing two or more conductors and damping the movement thereof, or for damping the movement of individual conductors, of an overhead electrical transmission line comprising:
  • a rigid multi-body member formed with an annular cavity in the periphery thereof, the walls defining the cavity having a radial enlargement located intermediate to the axial ends and establishing in axial cross-section a first constricted area which is curved in an axial direction; a rigid arm having at one end a clamping means for receiving a conductor and at the other end being provided with a shaft-like portion extending articulately into said cavity with its longitudinal axis substantially perpendicular to the plane of the constricted area; said shaft-like portion forming in axial cross-section a substantially concave outside surface, said portion being arranged in said cavity generally in symmetrical alignment to the constricted cross-section; a generally tubular, elastomeric member mounted about said shaft-like portion and interposed under radial compression between the latter and the walls of said cavity, the outside surface of the axially central portion of said elastomeric member having a curvature approximating a mirror image of said enlargement; and wherein the

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  • Springs (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)
  • Vibration Prevention Devices (AREA)
US00280437A 1972-08-14 1972-08-14 Elastomeric spacer and/or damper for electrical conductors Expired - Lifetime US3777046A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28043772A 1972-08-14 1972-08-14

Publications (1)

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US3777046A true US3777046A (en) 1973-12-04

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Application Number Title Priority Date Filing Date
US00280437A Expired - Lifetime US3777046A (en) 1972-08-14 1972-08-14 Elastomeric spacer and/or damper for electrical conductors

Country Status (8)

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US (1) US3777046A (US20110009641A1-20110113-C00185.png)
JP (1) JPS573297B2 (US20110009641A1-20110113-C00185.png)
AR (1) AR205876A1 (US20110009641A1-20110113-C00185.png)
AU (1) AU470535B2 (US20110009641A1-20110113-C00185.png)
BR (1) BR7300690D0 (US20110009641A1-20110113-C00185.png)
CA (1) CA981350A (US20110009641A1-20110113-C00185.png)
FR (1) FR2196536B1 (US20110009641A1-20110113-C00185.png)
GB (1) GB1413293A (US20110009641A1-20110113-C00185.png)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3913712A (en) * 1973-06-20 1975-10-21 Demag Ag Rail structure
US6520709B1 (en) * 1999-04-30 2003-02-18 Frank's Casing Crew And Rental Tools, Inc. Variable length/capacity elevator links
US20040062594A1 (en) * 2002-09-09 2004-04-01 Findeco S.R.L. Connection group for movable road barriers
US20100038095A1 (en) * 2006-12-06 2010-02-18 National Oilwell Varco, L.P. Dual-Saddle Ear Support Apparatus
US20120037092A1 (en) * 2010-08-16 2012-02-16 Sells Penny A Multiple pet leash
FR2977923A1 (fr) * 2011-07-12 2013-01-18 Peugeot Citroen Automobiles Sa Systeme d'amortissement des vibrations fixe sur deux cables paralleles
US20140326708A1 (en) * 2013-05-02 2014-11-06 W.E.T. Automotive Systems, Ltd. Liquid resistant heating element
US9732567B2 (en) 2014-07-28 2017-08-15 H&H Drilling Tools, LLC Interchangeable bail link apparatus and method
EP3381098A1 (en) * 2015-12-30 2018-10-03 Preformed Line Products Company Cable spacer clamp arm liner
US10236669B2 (en) 2015-08-07 2019-03-19 Hubbell Incorporated Motion control device for overhead transmission lines

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES512004A0 (es) * 1982-05-07 1983-04-01 Material Aux Elect "un procedimiento para disipar energia de vibracion y conformar grupos de conductores".
ES512003A0 (es) * 1982-05-07 1983-04-01 Material Aux Elect "un procedimiento para disipar energia de vibracion y conformar grupos de conductores".
WO2016196899A1 (en) 2015-06-05 2016-12-08 Ingersoll-Rand Company Power tool housings
US10668614B2 (en) 2015-06-05 2020-06-02 Ingersoll-Rand Industrial U.S., Inc. Impact tools with ring gear alignment features
WO2016196984A1 (en) 2015-06-05 2016-12-08 Ingersoll-Rand Company Power tools with user-selectable operational modes
US10418879B2 (en) * 2015-06-05 2019-09-17 Ingersoll-Rand Company Power tool user interfaces
WO2016196918A1 (en) 2015-06-05 2016-12-08 Ingersoll-Rand Company Power tool user interfaces

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR618628A (fr) * 1926-07-06 1927-03-15 Cie Applic Mecaniques Articulation amovible élastique
US1871861A (en) * 1929-08-15 1932-08-16 Delco Prod Corp Oscillating joint
US2312516A (en) * 1940-06-08 1943-03-02 Thompson Prod Inc Joint assembly
DE1008129B (de) * 1955-04-25 1957-05-09 Boge Gmbh Elastisches Gelenk fuer Spurstangen an Kraftfahrzeugen
US3157731A (en) * 1961-12-05 1964-11-17 Andre Rubber Co Cable spacers for multi-conductor electrical overhead transmission lines

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1076421A (en) * 1963-01-07 1967-07-19 Enfield Rolling Mills Ltd Improvements in and relating to spacers for overhead electrical transmission cables

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR618628A (fr) * 1926-07-06 1927-03-15 Cie Applic Mecaniques Articulation amovible élastique
US1871861A (en) * 1929-08-15 1932-08-16 Delco Prod Corp Oscillating joint
US2312516A (en) * 1940-06-08 1943-03-02 Thompson Prod Inc Joint assembly
DE1008129B (de) * 1955-04-25 1957-05-09 Boge Gmbh Elastisches Gelenk fuer Spurstangen an Kraftfahrzeugen
US3157731A (en) * 1961-12-05 1964-11-17 Andre Rubber Co Cable spacers for multi-conductor electrical overhead transmission lines

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3913712A (en) * 1973-06-20 1975-10-21 Demag Ag Rail structure
US6520709B1 (en) * 1999-04-30 2003-02-18 Frank's Casing Crew And Rental Tools, Inc. Variable length/capacity elevator links
US20040062594A1 (en) * 2002-09-09 2004-04-01 Findeco S.R.L. Connection group for movable road barriers
US20100038095A1 (en) * 2006-12-06 2010-02-18 National Oilwell Varco, L.P. Dual-Saddle Ear Support Apparatus
US7735565B2 (en) 2006-12-06 2010-06-15 Varco I/P, Inc. Dual-saddle ear support apparatus
US20120037092A1 (en) * 2010-08-16 2012-02-16 Sells Penny A Multiple pet leash
FR2977923A1 (fr) * 2011-07-12 2013-01-18 Peugeot Citroen Automobiles Sa Systeme d'amortissement des vibrations fixe sur deux cables paralleles
US20140326708A1 (en) * 2013-05-02 2014-11-06 W.E.T. Automotive Systems, Ltd. Liquid resistant heating element
US10314111B2 (en) * 2013-05-02 2019-06-04 Gentherm Gmbh Liquid resistant heating element
US9732567B2 (en) 2014-07-28 2017-08-15 H&H Drilling Tools, LLC Interchangeable bail link apparatus and method
US10236669B2 (en) 2015-08-07 2019-03-19 Hubbell Incorporated Motion control device for overhead transmission lines
EP3381098A1 (en) * 2015-12-30 2018-10-03 Preformed Line Products Company Cable spacer clamp arm liner

Also Published As

Publication number Publication date
FR2196536A1 (US20110009641A1-20110113-C00185.png) 1974-03-15
GB1413293A (en) 1975-11-12
AR205876A1 (es) 1976-06-15
AU470535B2 (en) 1976-03-18
JPS4946186A (US20110009641A1-20110113-C00185.png) 1974-05-02
CA981350A (en) 1976-01-06
JPS573297B2 (US20110009641A1-20110113-C00185.png) 1982-01-20
AU5084473A (en) 1974-07-11
FR2196536B1 (US20110009641A1-20110113-C00185.png) 1977-02-18
BR7300690D0 (pt) 1974-08-29

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Date Code Title Description
AS Assignment

Owner name: IMPERIAL CLEVITE INC., A CORP. OF PA,ILLINOIS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GOULD INC., A CORP. OF DE;REEL/FRAME:003998/0236

Effective date: 19810928

Owner name: IMPERIAL CLEVITE INC., 2550 GOLF ROAD, ROLLING MEA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:GOULD INC., A CORP. OF DE;REEL/FRAME:003998/0236

Effective date: 19810928

AS Assignment

Owner name: CLEVITE INDUSTRIES INC., A CORP. OF DE.,STATELESS

Free format text: MERGER;ASSIGNOR:IMPERIAL CLEVITE INC., A PA. CORP. (MERGED INTO);REEL/FRAME:004600/0610

Effective date: 19860615

Owner name: CLEVITE INDUSTRIES INC., A CORP. OF DE.

Free format text: MERGER;ASSIGNOR:IMPERIAL CLEVITE INC., A PA. CORP. (MERGED INTO);REEL/FRAME:004600/0610

Effective date: 19860615

AS Assignment

Owner name: PULLMAN COMPANY, THE, A DE. CORP.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CLEVITE INDUSTRIES INC.,;REEL/FRAME:005165/0550

Effective date: 19890811