Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS3515798 A
Publication typeGrant
Publication dateJun 2, 1970
Filing dateDec 6, 1968
Priority dateDec 6, 1968
Publication numberUS 3515798 A, US 3515798A, US-A-3515798, US3515798 A, US3515798A
InventorsJames A Sievert
Original AssigneeMinnesota Mining & Mfg
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Elastic cover and removable cone assembly
US 3515798 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

June 2, 1970 J. AJSIEVERT i 3,515,798


MAME; A. S/EVEPT BY M M {do /4M ATTORNE Y$ United States Patent 3,515,798 ELASTIC COVER AND REMOVABLE CONE ASSEMBLY James A. Sievert, Stillwater, Minn., assignor to Minnesota Mining and Manufacturing Company, St. Paul, Minn., a corporation of Delaware Filed Dec. 6, 1968, Ser. No. 781,843

, Int. Cl. H01r 5/00 U.S. Cl. 174-135 6 Claims ABSTRACT OF THE DISCLOSURE An elastic tubular cover member supported in stretched condition on an easily removable one-piece rigid spiral core having interconnected adjacent coils. Uncoiling of the spiral and removal of the core as a continuous narrow strip through the remainder of the spiral permits the cover to be shrink fit upon a workpiece disposed within the assembly.

U.S. Pat. No. 743,346 wherein a soft rubber cover is formed on a metal sleeve which unites the wire-ends. Other forms have been described, e.g. in Dibner U.S. Pat. No. 2,674,647 and in Becker et al. U.S. Pat. No. 3,274,- 330. Heat-retractable normally non-elastic coverings have also been used, as in Foreit U.S. Pat. No. 2,695,853, although providing a less elfective cover because of their inability to retract at normal use temperatures after stretching. In a diflerent area, tough elastic rubbery rings or sleeves used as protectors for drill pipes have been supplied in expanded or stretched form on removable rigid sleeves, as shown for example in Gates U.S. Pat. No. 2,725,621 and Stone et al. U.S. Pat. No. 2,682,102.

Thepresent invention likewise provides a rubbery or elastically shrinkable tubular cover member supported in radially expanded or stretched condition on a removable rigid sleeve, but having a number of advantages. Removal of the sleeve in applying the cover is easily accomplished without the use of complicated or expensive presses or other machines and may be effected by simple hand operation. The supporting sleeve is easily and completely removable from any position and need not be removed at an end of the wire, tube, or other article onto which the rubbery cover is to be permitted to contract. No lubricants or friction-reducing materials are required to facilitate removal of the support.

These and other advantages are obtained, in accordance with the principles of the invention, by employing as the removable rigid supporting core a tubular member having a closed helix configuration as will now be further described in connection with the appended drawing. The single figure is an illustration in elavation and partly in section showing the application of a protective rubbery sleeve to a cable splice area.

The illustration shows two cable-ends 11 comprising a stranded conductor 12 and an insulating covering 13. The covering is cut away as at 14 and the conductors joined together in end-to-end configuration by suitable means not shown but which may typically consist of a com- Patented June 2, 1970 pressed or indented metal sleeve or a close-fitting metal tube with set-screws retainers. The joint or splic may be covered with insulating mastic or tape, here omitted for clarity of illustration.

The cover assembly is slipped over one of the wire-ends prior to joining the two ends. After the splice is completed, the assembly is slid into position over the splice area and the support is removed to permit the elastic cover to contract and form a tight fit. The process will be apparent from the illustration. The support comprises a unitary tubular shell 15 helically grooved along its entire length, the continuous groove 16 permitting the shell to be pulled out into a continuous strip 17 which is removed through the bore, i.e. from between the shell and the cable. An elastic tube 18 in radially extended or strtched condition is supported on the shell 15. As the strip 17 is progressively withdrawn, the tube contracts about the cable as at 19 to form a closely conforming and tightly retained protective covering. Contraction of the tube results in the application of a resultant force against the end of the shell and assists in the removal of the strip 17 as the shell is unwound.

In an illustrative embodiment a cylindrical tube of age-resistant translucent vulcanized rubber which in the relaxed state has an inside diameter of about 15 mm. and a'wall thickness of about 3 mm. is mounted on a rigid cylindrical tubular core of tough flexible cellulose acetate butyrate or polyvinyl chloride polymer material having an outside diameter of about 30 mm. and a wall thickness of about 2 mm. and spirally grooved in a narrow V-shaped groove approximately 1.5 mm. in depth and at a spacing of about 4 mm., the adjacent coils of the closed helix defined by the groove remaining interconnected. The assembly is slipped over a cable splice area having a diameter of about 20 mm. and the core is unwound and removed as a continuous narrow strip from between the core and the cable in the manner illustrated. Hand pulling provides fully adequate tension to unwind the core and remove the strip, leaving the rubber tube tightly aflixed to the cable. It will be appreciated that the polymeric tube in effect is substantially rigid and maintains its tubular shape, even though the material of which it is constructed is sufficiently tough and flexible to permit unwinding and removal of the helical strip under the tension supplied.

Synthetic rubbers and other elastic materials may be used in place of natural rubber, and the coverings may be suitably compounded or treated in any desired manner, for example by the incorporation of opacifying or toughening pigments such as carbon black or zinc oxide, antioxidants, vulcanizing agents, processing oils, and other well-known compounding agents, and by heatcuring or other treatments. Suitable identifying markings or legends may be applied. As a further specific illustration, conductive platelets may be incorporated, as taught in Wyatt U.S. Pat. No. 3,349,164, to provide an elastic insulative stress relief covering.

Although not essential to the application of the elastic covering, in some instances it may be found desirable to pre-coat the cable splice area, for example with a prim ing or water-proofing coating or a wrapping of adhesive tape. Alternatively, the inner surface of the elastic tube may itself carry a thin coating, for example of pressure-sensitive adhesive or of silicone gum for improving the bond or water-resistance between the tube and the cable. In such instances it may be found expedient to cover the external surface of the supporting shell, either before or after the forming of the helical groove, with a low adhesion backsize composition.

The elasticity of the rubbery tube not only retains the tube firmly on the core and assists in the unwinding and removal of the core, but additionally assists in holding the coils of the helix together, i.e. in the form of a closed helix, until they are forcefully removed by pulling on the extended end of the strip. Consequently the groove may be made as deep as desired for ease of separation of the coils, without fear of premature collapse of the structure.

Both the elastic sleeve and the rigid supporting core are ordinarily cylindrical both for ease of manufacture and as being of maximum utility, but tubular structures of non-uniform diameter are also contemplated as coming within the purview of the invention, a specific example being a conical structure for use as an end cap on a cable termination.

What is claimed is as follows:

1. An elastic cover assembly comprising an elastic cover member supported in highly stretched condition on a hollow core member comprising a continuous narrow strip of tough flexible material in the form of a substantially rigid closed helix having adjacent coils interconnected.

2. The assembly of claim 1 wherein said core member is a deeply spirally grooved polymeric tube, the groove being. sufficiently deep to permit separation of the interconnected adjacent coils defined thereby for removal as a continuous narrow strip remainder of said tube.

3. The assembly of claim 2 wherein said polymeric tube is of cellulose acetae butyrate or polyvinyl chloride and said groove extends through about three-fourths the wall thickness of said tube.

'4. The assembly of claim 1 wherein said cover member carries over its inner surface a thin water-resistant coating.

5. The assembly of claim 4 wherein said coating is a pressure-sensitive adhesive.

6. The assembly of claim 4 wherein said coating is a silicone.

extending through the References Cited I FOREIGN PATENTS 189,460 4/1957 Austria.

OTHER REFERENCES German printed application No. 1,053,602, Schwarzer, published Mar. 26, 1959.

LARAMIE E. ASKIN, Primary Examiner U.S. Cl. X.R.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
AT189460B * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3742123 *Nov 25, 1970Jun 26, 1973Haub LInsulator for electric wires
US3808352 *Oct 26, 1972Apr 30, 1974Minnesota Mining & MfgElastomeric terminal insulator and stress cone and conductor terminated therewith
US3824331 *Jun 25, 1973Jul 16, 1974Amp IncResilient cover having a removable external support member
US3869189 *Oct 3, 1973Mar 4, 1975Mccurdy Bob CUnderground electrical connector
US3879249 *May 8, 1974Apr 22, 1975Minnesota Mining & MfgCable enclosure
US3946480 *Apr 11, 1975Mar 30, 1976Communications Technology CorporationApparatus for use in applying an expandable resilient sleeve to a member therein
US4070746 *Sep 3, 1976Jan 31, 1978Raychem CorporationMethod for covering an article with a recoverable sleeve
US4179320 *Apr 10, 1978Dec 18, 1979Raychem CorporationRecoverable articles
US4234439 *May 10, 1979Nov 18, 1980Minnesota Mining And Manufacturing CompanyDielectric material for influencing electric fields, and stress control devices made therefrom
US4267628 *Aug 23, 1979May 19, 1981Thomas & Betts CorporationApparatus for installing cable coverings
US4287012 *Apr 6, 1979Sep 1, 1981Raychem CorporationRecoverable articles
US4300328 *Jul 20, 1979Nov 17, 1981Raychem CorporationEasily removable heat recoverable closure
US4338970 *Jun 16, 1975Jul 13, 1982Raychem CorporationRecoverable sleeve
US4363842 *Mar 2, 1981Dec 14, 1982Minnesota Mining And Manufacturing CompanyElastomeric pre-stretched tubes for providing electrical stress control
US4389440 *Feb 8, 1982Jun 21, 1983Minnesota Mining & Manufacturing CompanyTorque preloaded elastic cover for torque coupling
US4391661 *Feb 2, 1981Jul 5, 1983Thomas & Betts CorporationCable covering method using an expandable insulative sleeve
US4410009 *Jun 15, 1982Oct 18, 1983Sigmaform CorporationRecoverable sleeve assembly
US4501927 *Aug 31, 1983Feb 26, 1985Minnesota Mining And Manufacturing CompanyApparatus and method for sealing splices in insulated electrical cables
US4503105 *Jan 20, 1984Mar 5, 1985Minnesota Mining And Manufacturing CompanyPlastic core for an elastically shrinkable tubular cover
US4506430 *Sep 19, 1983Mar 26, 1985Panduit Corp.Elastic cover applicator and method of applying cover
US4517407 *Sep 21, 1982May 14, 1985G & W Electric CompanyHigh voltage cable terminator and method of assembly
US4585607 *May 28, 1982Apr 29, 1986Raychem CorporationMethod of covering a member
US4653170 *Jan 10, 1986Mar 31, 1987Kelson Arnold AMethod for handlebar grip installation
US4729256 *Jan 15, 1987Mar 8, 1988Kelson Arnold AHandlebar grip and assembling facilitating strip
US4765033 *Oct 1, 1987Aug 23, 1988Hollingsworth Elmont EQuick-release radial clamp
US4868967 *Mar 2, 1987Sep 26, 1989Raychem CorporationTubular article
US4871599 *Apr 14, 1988Oct 3, 1989Minnesota Mining And Manufacturing CompanySupport helix for a radially expanded resilient sleeve
US4908247 *Apr 10, 1987Mar 13, 1990The Procter & Gamble CompanyArticle including segment which is elastically shirrable after manufacture
US4915990 *Feb 25, 1988Apr 10, 1990Raychem CorporationMethod of, and elastomeric composition for, protecting a substrate
US4934227 *Apr 13, 1989Jun 19, 1990Minnesota Mining And Manufacturing CompanyDevice for cutting a support helix for a radially expanded resilient sleeve
US4983784 *Apr 26, 1989Jan 8, 1991Whitlock Ronald KCable termination apparatus and method
US5070597 *Jun 20, 1989Dec 10, 1991Raychem CorporationTubular article
US5080942 *May 23, 1990Jan 14, 1992Minnesota Mining And Manufacturing CompanyHigh stretch elastomeric pre-stretched tubes
US5098752 *Aug 14, 1990Mar 24, 1992Raychem CorporationRecoverable elastomeric sleeve and method for installation and use
US5118907 *Nov 13, 1989Jun 2, 1992Stout Thomas DSystem and method for medical device interconnection utilizing controlled dispensing of elongated interconnecting member
US5171940 *Sep 27, 1990Dec 15, 1992Societa' Cavi Pirelli S.P.A.Expanded cable joint elastic sleeves with permissible residual deformation after storage
US5226837 *Oct 29, 1992Jul 13, 1993Raychem CorporationEnvironmentally protected connection
US5294752 *Jan 12, 1990Mar 15, 1994Pirelli Cavi S.P.A.Multi-layer elastic sleeves for electric power cable joints and joints therewith
US5365020 *Apr 12, 1990Nov 15, 1994Pirelli Cavi S.P.A.Cable joint coverings, devices for applying such coverings and joints obtained therewith
US5373616 *Mar 31, 1993Dec 20, 1994Boa, Inc.Apparatus for applying hangrips to articles such as sports equipment and the like
US5406871 *Aug 5, 1991Apr 18, 1995Minnesota Mining And Manufacturing CompanyCover assembly of expanded elastomeric tubing having frangible support core structures
US5467515 *Sep 28, 1994Nov 21, 1995Amerace CorporationAlternative cold shrink device
US5551138 *Jun 5, 1995Sep 3, 1996Kabelmetal Electro GmbhProcess for encasing articles
US5560969 *Dec 8, 1994Oct 1, 1996Pirelli Cavi S.P.A.Tubular supporting element for a sleeve for covering junctions, particularly of cables for transmitting electrical energy
US5570497 *Jun 8, 1995Nov 5, 1996Amerace CorporationAlternative cold shrink device and method of employing same
US5577310 *Sep 8, 1995Nov 26, 1996Alcatel CableSupport for fitting a shrinkable sleeve
US5589123 *Mar 27, 1995Dec 31, 1996Pirelli Cavi S.P.A.Process of making a tubular supporting element
US5589667 *Apr 2, 1993Dec 31, 1996Minnesota Mining And Manufacturing CompanyRemovable core for pre-stretched tube
US5670223 *Feb 6, 1995Sep 23, 1997Minnesota Mining And Manufacturing CompanySupport core ribbon for cold-shrink tube
US5741015 *Jun 17, 1996Apr 21, 1998Skinner; William O.Pipe to manhole seal
US5746253 *May 23, 1996May 5, 1998Minnesota Mining And Manufacturing CompanyCrushable core and cover assembly having an expanded tubing and a crushable core
US5752926 *Nov 9, 1993May 19, 1998Landec CorporationOrthopedic casts
US5753861 *Sep 25, 1996May 19, 1998Minnesota Mining And ManufacturingCovering device
US5801332 *Aug 31, 1995Sep 1, 1998Minnesota Mining And Manufacturing CompanyElastically recoverable silicone splice cover
US5804630 *Aug 8, 1996Sep 8, 1998Minnesota Mining And Manufacturing CompanyEpihalohydrin electrical stress controlling material
US5807291 *May 25, 1995Sep 15, 1998Larson; Andrew W.Method of forming an orthopedic cast
US5844170 *Mar 1, 1996Dec 1, 1998Minnesota Mining And Manufacturing CompanyClosure with flowable material and reinforcing core
US5856634 *Mar 19, 1997Jan 5, 1999Raychem CorporationRecoverable article
US5925427 *Aug 12, 1997Jul 20, 1999Minnesota Mining And Manufacturing CompanySupport core ribbon for cold-shrink tube
US6015629 *Sep 4, 1998Jan 18, 20003M Innovative Properties CompanyStress control for termination of a high voltage cable
US6103975 *Jun 29, 1998Aug 15, 20003M Innovative Properties CompanyPre-assembled electrical splice component
US6162383 *Mar 25, 1997Dec 19, 2000The Furukawa Electric Co., Ltd.Method of diametrally expanding an elastic tube
US6171669 *Jan 26, 1994Jan 9, 2001Societa Cavi Pirelli S.P.A.Expanded cable joint elastic sleeves with permissible residual deformation storage
US6189575Mar 18, 1998Feb 20, 2001David IonsRecoverable article
US6230746Mar 18, 1998May 15, 2001David IonsRecoverable article
US6245999Dec 11, 1997Jun 12, 2001Raychem LimitedCable enclosure arrangement
US6337440Mar 18, 1998Jan 8, 2002David IonsRecoverable article
US6340794Dec 16, 1996Jan 22, 2002Minnesota Mining And Manufacturing CompanyStress control for termination of a high voltage cable
US6353184Aug 11, 1999Mar 5, 2002Avaya Technology Corp.Low profile adapter for variable size heat shrink tubing joint
US6359223Aug 11, 1999Mar 19, 2002Avaya Technology Corp.Method and apparatus for making a high-pressure seal using cold shrink tubing
US6378716 *Jan 26, 2000Apr 30, 2002Michael S. GzybowskiEasy opening closure with strippable core member
US6415936 *Oct 27, 1998Jul 9, 2002Michael S. GzybowskiEasy opening closure with strippable core member
US6467638Dec 13, 2001Oct 22, 2002Michael S. GzybowskiEasy opening closure with strippable structure
US6576841Mar 26, 2002Jun 10, 2003Office Of Intellectual Property Counsel 3M Innovative Properties CompanyCable sealing cover including stress relief
US6672900Jul 6, 2001Jan 6, 2004Robert Bosch CorporationUniversal aftermarket connector
US6748609 *Apr 28, 2003Jun 15, 2004The United States Of America As Represented By The Secretary Of The NavyClosure device for a protective suit
US6790063May 15, 2003Sep 14, 2004Homac Mfg. CompanyElectrical connector including split shield monitor point and associated methods
US6811418May 15, 2003Nov 2, 2004Homac Mfg. CompanyElectrical connector with anti-flashover configuration and associated methods
US6830475May 15, 2003Dec 14, 2004Homac Mfg. CompanyElectrical connector with visual seating indicator and associated methods
US6905356May 15, 2003Jun 14, 2005Homac Mfg. CompanyElectrical connector including thermoplastic elastomer material and associated methods
US6911596 *May 14, 2002Jun 28, 20053M Innovative Properties CompanyMethod for covering an article with a tubular cover member, tubular cover member and covered article
US7104822May 27, 2005Sep 12, 2006Homac Mfg. CompanyElectrical connector including silicone elastomeric material and associated methods
US7104823Aug 8, 2005Sep 12, 2006Homac Mfg. CompanyEnhanced separable connector with thermoplastic member and related methods
US7251881Oct 14, 2004Aug 7, 20073M Innovative Properties CompanyMethod of delivering geometric stress relief element to high voltage cable terminations
US7253362Jun 7, 2006Aug 7, 20073M Innovative Properties CompanyClosure with wrapped cable
US7304242 *Jun 7, 2006Dec 4, 20073M Innovative Properties CompanyShrinkable closure
US7304244Jun 7, 2006Dec 4, 20073M Innovative Properties CompanyMethod of making closure housing for sealing
US7307219Jun 7, 2006Dec 11, 20073M Innovative Properties CompanyClosure housing for sealing
US7351082Sep 12, 2006Apr 1, 2008Homac Mfg. CompanyElectrical connector including silicone elastomeric material and associated methods
US7351908 *Aug 18, 2006Apr 1, 20083M Innovative Properties CompanyElectrical power cable adaptor and method of use
US7431599Dec 2, 2005Oct 7, 2008Richards Manufacturing CompanyShrinkable multiple bore connection system
US7531748Jun 7, 2006May 12, 20093M Innovative Properties CompanySealing apparatus
US7635813Sep 10, 2007Dec 22, 20093M Innovative Properties CompanyArticle and method for sealing fluid-containing cables
US7767909Apr 23, 2007Aug 3, 20103M Innovative Properties CompanyTubular terminal for a cable
US7973241Sep 10, 2007Jul 5, 20113M Innovative Properties CompanyPressure restraining enclosure for cables
US8425238 *Jul 6, 2011Apr 23, 2013Yazaki CorporationElectric junction box
US8774587Jan 26, 2013Jul 8, 2014Optisense Network, LlcStress control structure for optical fibers in a high voltage environment
US20090232587 *Sep 8, 2008Sep 17, 2009High Cedar Enterprise Co., Ltd.Handgrip mounting method
DE2647122A1 *Oct 19, 1976Apr 27, 1978Raychem CorpDistended shrink-fit sheating in a temporary hollow support - for use where heating elements cannot be used, e.g. mines
DE3536250A1 *Oct 11, 1985Apr 16, 1987Minnesota Mining & MfgKabelendverschluss fuer papierisolierte dreileiter-mittelspannungskabel
DE3715915A1 *May 13, 1987Dec 8, 1988Minnesota Mining & MfgStuetzwendel fuer einen radial gedehnten huelsenkoerper
DE3812398A1 *Apr 14, 1988Oct 26, 1989Minnesota Mining & MfgUmhuellung aus kunststoffolienmaterial fuer einen kabelendverschluss, eine kabelverbindung oder einen anderen vom kabelmantel befreiten abschnitt eines elektrischen kabels
DE4308593A1 *Mar 18, 1993Sep 22, 1994Kabelmetal Electro Gmbh"Verfahren zum Umhüllen von Substraten"
EP0035271A1 *Mar 3, 1981Sep 9, 1981Minnesota Mining And Manufacturing CompanyElastomeric composition for providing electrical stress control
EP0117092A1 *Feb 3, 1984Aug 29, 1984Minnesota Mining And Manufacturing CompanyPlastic core for an elastically shrinkable tubular cover
EP0291203A2 *Apr 29, 1988Nov 17, 1988Minnesota Mining And Manufacturing CompanySupport helix for a radially expanded resilient sleeve
EP0399263A2 *May 4, 1990Nov 28, 1990PIRELLI CAVI S.p.A.Assembly constituted by a sleeve, fitted on a tubular support, in particular for joints and sealing ends of electric cables
EP0424090A2 *Oct 16, 1990Apr 24, 1991Minnesota Mining And Manufacturing CompanyElastomeric covering having conformable interior
EP0435569A1 *Dec 20, 1990Jul 3, 1991Minnesota Mining And Manufacturing CompanyRadially shrinkable sleeve for enclosing a connection or a terminal of an electrical cable
EP0616405A1 *Mar 8, 1994Sep 21, 1994Kabelmetal Electro GmbHProcess for enclosing substrates
EP0637117A1 *Jul 22, 1994Feb 1, 1995Alcatel CableSupport for positioning a shrinkable sleeve
EP0638977A1 *Aug 11, 1994Feb 15, 1995Minnesota Mining And Manufacturing CompanyTube for covering connection of electric wires
EP0702444A1Sep 11, 1995Mar 20, 1996Alcatel CableLaying support for a recoverable sleeve
EP0750381A1Jun 21, 1995Dec 27, 1996Minnesota Mining And Manufacturing CompanyCrushable core and cover assembly having an expanded elastomeric tubing and a chrushable core
EP0780949A1Dec 20, 1996Jun 25, 1997Minnesota Mining And Manufacturing CompanyUniversal cable adapter, cable joint using the adapter and method of making the same
EP1089410A1 *Oct 1, 1999Apr 4, 20013M Innovative Properties CompanyCore crusher
EP1154543A2 *May 2, 2001Nov 14, 2001ALSTOM Power N.V.Insulation of stator windings through shrink tubing
EP1506599A1 *May 16, 2003Feb 16, 2005Homac Mfg. CompanyElectrical connector including thermoplastic elastomer material and associated methods
EP1852949A1May 5, 2006Nov 7, 20073M Innovative Properties CompanyTubular terminal for a cable
EP2608338A1Dec 21, 2011Jun 26, 20133M Innovative Properties CompanyTerminal connection device for a power cable
EP2698891A1Dec 21, 2011Feb 19, 20143M Innovative Properties CompanyTerminal connection device for a power cable
WO1983000779A1 *Jul 12, 1982Mar 3, 1983Minnesota Mining & MfgElastic cover for pressurized couplings
WO1983002807A1 *Jan 17, 1983Aug 18, 1983Minnesota Mining & MfgTorque preloaded elastic cover for torque coupling
WO1989000782A1 *Jul 15, 1988Jan 26, 1989Nordiske Kabel TraadA method of mounting a tight-fitting tube section or socket on a cable
WO1992008265A1 *Sep 13, 1991May 14, 1992Minnesota Mining & MfgTransition joint for oil-filled cables
WO1993022816A1 *Apr 2, 1993Nov 11, 1993Minnesota Mining & MfgRemovable core for pre-streched tube
WO1994022196A1 *Feb 3, 1994Sep 29, 1994Minnesota Mining & MfgA pre-stretched, elastomeric article
WO1995029524A1 *Sep 22, 1994Nov 2, 1995Minnesota Mining & MfgA prestretched, elastomeric article
WO1996024977A1 *Dec 26, 1995Aug 15, 1996Minnesota Mining & MfgSupport core ribbon for cold-shrink tube
WO2000079661A1 *Jun 22, 2000Dec 28, 2000Furukawa Electric Co LtdOrdinary-temperature shrinking type rubber unit
WO2001026199A1 *Sep 29, 2000Apr 12, 20013M Innovative Properties CoCore crusher
WO2004093281A1 *Dec 19, 2003Oct 28, 2004Heping ZhouCold-shrink cable plug
WO2007130811A2Apr 23, 2007Nov 15, 20073M Innovative Properties CoTubular terminal for a cable
WO2010091017A1Feb 2, 2010Aug 12, 20103M Innovative Properties CompanySplice assembly with shield sock
WO2013096145A2Dec 17, 2012Jun 27, 20133M Innovative Properties CompanyLow friction sleeve for cold shrink tube
WO2013096354A1Dec 19, 2012Jun 27, 20133M Innovative Properties CompanyTerminal connection device for a power cable
U.S. Classification174/135, 285/18, 138/122, 285/915, 24/129.00D, 29/235, 174/84.00R, 285/381.1, 29/450
International ClassificationH01R4/70, F16L58/10, H02G15/18, F16B4/00
Cooperative ClassificationF16B4/004, Y10S285/915, H02G15/1833
European ClassificationH02G15/18E1B, F16B4/00P