US3455336A - Heat recoverable article and process - Google Patents
Heat recoverable article and process Download PDFInfo
- Publication number
- US3455336A US3455336A US506161A US3455336DA US3455336A US 3455336 A US3455336 A US 3455336A US 506161 A US506161 A US 506161A US 3455336D A US3455336D A US 3455336DA US 3455336 A US3455336 A US 3455336A
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- United States
- Prior art keywords
- rail
- closure member
- channel
- portions
- heat
- Prior art date
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- Expired - Lifetime
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
- F16L58/1054—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe
- F16L58/1063—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe the coating being a sheet wrapped around the pipe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
- B29C61/06—Making preforms having internal stresses, e.g. plastic memory
- B29C61/10—Making preforms having internal stresses, e.g. plastic memory by bending plates or sheets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/20—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics
- F16L47/22—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics using shrink-down material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/10—Bandages or covers for the protection of the insulation, e.g. against the influence of the environment or against mechanical damage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
- F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
-
- 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
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable
- H02G15/1806—Heat shrinkable sleeves
- H02G15/1813—Wraparound or slotted sleeves
-
- 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
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0462—Tubings, i.e. having a closed section
- H02G3/0481—Tubings, i.e. having a closed section with a circular cross-section
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S174/00—Electricity: conductors and insulators
- Y10S174/08—Shrinkable tubes
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S174/00—Electricity: conductors and insulators
- Y10S174/11—Zipper tubes
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S439/00—Electrical connectors
- Y10S439/932—Heat shrink material
-
- 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
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/14—Bale and package ties, hose clamps
- Y10T24/1498—Plastic band
-
- 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
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/34—Combined diverse multipart fasteners
- Y10T24/3427—Clasp
- Y10T24/3439—Plural clasps
- Y10T24/344—Resilient type clasp
- Y10T24/3444—Circular work engageable
Definitions
- a closure sleeve for pipes or the like constructed from a piece of independently dimensionally heat unstable material, that is, material that will return to its original shape and dimensions upon application of heat alone.
- the member is typically fabricated in tubular form and is provided with an elongated ridge or rail extending along its length. The member and rail are then split along their length so that the sleeve can be positioned around pipe. A flexible channel or fastener is then slipped over the rail and the part recovered, the rail and fastener being dimensioned so that the split portions of the rail cannot be withdrawn from the fastener and the tubular shape of the sleeve is retained.
- This invention relates to a heat recoverable article and more particularly relates to a heat shrinkable part that can be positioned around a cable, pipe, connector, or the like and then heat recovered in place.
- the closure member disclosed comprises an independently dimensionally heat unstable sleeve which is split along its length and which is provided with a plurality of buttons and cooperating holes by means of which the edges of the split sleeves can be joined after the sleeve is wrapped around a pipe or the like and before it is heat recovered. While this type closure member has been found to be quite satisfactory in use, some difiiculty has been experienced in adapting it for use in situations where the object to be covered is irregular in shape as is the case, for example, when assembling a wire harness including a group of wires which diverge or branch. This type closure member also requires a number of fairly time consuming fabrication steps even for straight tubing.
- FIGURE 1 is a perspective view of a first embodiment of the closure member of the present invention prior to installation
- FIGURE 2 is a plan view of the closure member of FIGURE 1 after installation
- FIGURE 3 is a cross-sectional view taken along lines 3-3 of FIGURE 2;
- FIGURE 4 is an enlarged detail view of a fastener according to the present invention.
- FIGURE 5 is an enlarged view, partly in section, of the channel used in fastening the closure member of the present invention
- FIGURE 6 is a side elevation, partly in section, showing a second embodiment of the present invention.
- FIGURE 7 is a cross-sectional view taken along lines 7-7 of FIGURE 6;
- FIGURE 8 is a side elevation of a third embodiment of the present invention.
- FIGURE 9 is a cross-sectional view taken along lines 9-9 of FIGURE 8.
- FIGURE 10 is an enlarged detail view of a modification of the fastener of FIGURE 4.
- FIGURE 11 is a cross-sectional view of tubing used in a fourth embodiment of the present invention.
- FIGURE 12 is a cross-sectional view of a fourth embodiment of a closure member according to the present invention before final installation;
- FIGURE 13 is a cross-sectional view of the closure member of FIGURE 12 after final installation.
- FIGURE 14 is a perspective view of a modified fastener for use in the present invention.
- the present invention like the invention disclosed in the aforementioned Conde application, utilizes an independently dimensionally heat unstable member or part as a closure member.
- a part is made of a material capable of having the property of plastic or elastic memory imparted thereto which is heated to above its crystalline melting temperature and expanded under pressure to a configuration greater than its normal configuration and then cooled while kept under pressure.
- a part treated in this manner will retain its expanded position until it is again heated to its crystalline melting temperature at which time it will recover to its original shape. Examples of such heat recoverable materials may be found in Currie Patent 2,027,962 and Cook et al. Patent 3,086,242, the disclosures of which are incorporated herein by reference.
- Non-crystalline polymeric materials exhibiting the property of plastic or elastic memory such as polyurethane, ionomers, etc. could also be used in practicing the present invention. Since the. closure members of the present invention can be made from material having either plastic or elastic memory, the terms elastic memory and plastic memory are used interchangeably and are intended to be mutually inclusive.
- such a part is molded, extruded or formed with an elongated ridge or rail extending either outwardly from its outer surface or inwardly from its inner surface.
- the rail extends along the entire distance that it is desired that the interior of the part be accessible and it is formed in such a manner that it can be out along its longitudinal axis to allow the separation of the part.
- a simulated channel slightly smaller than the one to go on the part is used to restrict expansion of the rail and insure the proper configuration of the rail after the part has been expanded and the part is then expanded under heat and pressure and then cooled while maintained under pressure; The simulated channel, if one is used, is then removed and the rail slit along its entire length.
- a flexible channel or fastener formed of plastic or metal is provided to cooperate with the rail to hold its two portions sothat the part is retained in the desired configuration during and after recovery.
- the part can be positioned 1 around an object such as a group of wires or the like, the portions of the rail brought together, and the channel slipped over the rail.
- the part When heated to a temperature above the crystalline melting temperature of the material from which it is constructed, the part will recover toward its original shape and will firmly engage the object to be protected.
- the part assumes the' correct size of the particular application apd it can now be removed and then reinstalled without the necessity of reheating.
- the part shrinks toward its original size, it can be used with a large number of different size objects having similar configurations.
- the interior of the part can be provided with a fusible insert or lining, such as a sealing compound.
- the part can also be made so that a bond is formed between the two portions of the rail. In such a case, of course, the part cannot be removed and reinstalled.
- FIGURE 1 there is shown a first embodiment of the present invention.
- a part or transition generally indicated as is fabricated of a material capable of having the property of plastic or elastic memory imparted thereto.
- the part 10 isY- shaped and has a stern portion 12 and communicating arm portions 14 and 16.
- a ridge or rail 18 is formed along the entire length of the arm 14 and one side of the stem 12 while a similar ridge or rail 20 is formed along the arm 16 on the other side of the stem 12.
- the rails are similar and, as can be seen by inspection of the rail 20, preferably have a flattened top portion 22 and a reduced or neckeddown portion 24 adjacent the surface of the part.
- the rails are longitudinally split along their entire length so that the interior of the arms 14 and 16 and the stem 12 are accessible. This permits the part to be positioned over a branch in any object to be protected such as, for example, a branch in a group of wires 26 shown in phantom of FIGURE 1.
- the rails 18 and 20 are shaped so that the volume of material in the necked-down portions is less than that in the top portion.
- the channel 30 is preferably a generally C-shaped piece of material, either metal or plastic, having a top section 32 for cooperating with the top surface of the rail and curved side portions 34 that wrap around the top portion of the rail and extend into the undercut formed by the necked-down portion 24.
- the rail 30 is preferably provided with a plurality of notches 36 along its length so that the rail is rendered relatively flexible.
- the part 10 is formed by molding the part into the desired shape, including the rails 18 and 20.
- the part is then heated to above the crystalline melting temperature of the material from which it is fabricated and expanded to a desired size, for example, by the application of pressure to the interior of the part.
- a simulated channel slightly smaller than the one to go on the finished part is slid over the rails 18 and 20 to restrict their expansion. This allows the later free insertion of the actual channel over the rail on expanded parts.
- the part is cooled while pressure is stillrnaintained. After cooling, the pressure can be removed and the part will remain in its expanded configuration.
- the rails 18 and 20 are then longitudinally split to form mating sections or edges 38 and 40. As can be seen in FIGURE 3, the rails can be split to have a vertical oifset 42 so that accurate vertical positioning of the mating sections 38 and 40 can be accomplished.
- the part is ready for use. Since the part is split along its entire length on both sides, it can easily he slipped over a divergence or branch, in an object to be protected, for example, in the group of wires 26 shown in phantom and the channels 30 then slid over the rails 18 and 20. If the part 10 is now heated to above the crystalline melting temperature of the material from which it is fabricated, it will recover toward its original dimensions and in so doing will tightly engage the object about which it is positioned, thereby forming a strong and long lasting protective cover or closure, The tightness of the channel in the necked-down area restricts the movement of material during the heat recovery process and insures that the two mating sections are kept together.
- the part can be removed simply by sliding the channels 30 off the rails. Once the repairs have been made, the same part or boot can now be put back in place by merely reassembling it in place and reinserting the channels.
- the heat shrinkable properties of the boot or part permit one boot to be used with a wide variation of object sizes. For example, in the wire group discussed, the member or size of the wires could be changed without changing the closure part. After the initial installation, the part or boot assumes the correct size for that application and reassembly does not require reheating.
- the arm portions may be necessary to have only one of the arm portions split, for example, when it is desired to make a splice to a main electrical line. In such a case, only the main line can not be out. If only one arm portion is to be split, the other is preferably not provided with a rail.
- a small raised boss 46 is preferably formed at each end of each rail.
- the bosses are flattened out during the expansion process, allowing the channel to slip into place. Heating causes the bosses to re-expand to their original shape and restricts the movement of the channel.
- FIGURES 6 and 7 a second embodiment of the present invention is illustrated.
- This embodiment is similar to the previously described embodiment with the exception that rather than being branched the part or boot shown is shaped to cover an object having a reduced diameter along a portion of its length.
- the part 50 consequently is provided with a region 52 of a first diameter, a region 53 of a reduced diameter, and a transition region 54 joining the regions 52 and 53.
- the part 50 is molded or otherwise formed with a ridge or rail 58 similar in structure to the rails 18 and 20.
- the rail is split longitudinally and a channel 60 identical to the channel 30 is provided for retaining the two split sections of the rail in position.
- the channel 60 is flexible, it can easily follow the contour of the part 50 and thereby hold together the mating sections of the rail along their entire length. As shown in FIGURE 7, the separation 62 of the rail 58 is vertical and is not provided with any oifset.
- the part 50 is expanded and installed in the same manner as is the part 10.
- FIGURES 8, 9 and 10 show another embodiment of the present invention.
- the part 70 shown in this figure is what is generally referred to as a boot.
- the part is formed with a rail 72 which is similar to the rails previously described and which-cooperates with a channel 74 which is similar to the channels 30 and 60.
- the rail 72 when the rail 72 is split longitudinally, it is provided with a plurality of serrations 76 which permits very accurate longitudinal positioning of the two mating sections.
- the rail 72 can be provided with a vertical offset or with no offset at all as described in connection with the previous rails while the previous rails can be provided with longitudinal serrations if desired.
- FIGURES ll14 an embodiment of the present invention is illustrated which utilizes an extruded tubing having the same diameter along its entire length.
- a tubing 80 is extruded with a ridge or rail 82 formed along its entire length and extending inwardly from its inner surface.
- the tubing is then expandede and the rail split longitudinally along its entire length into two portions 84 and 86.
- the tubing is now inverted, or turned inside out, and the edges 88 and 90 of the tubing brought into engagement.
- a channel or fastener 92 can now be slid over the rail to hold it in place around, for example, a cable 94.
- the channel 92 is a modification of the channels shown in FIGURES 1 through 10. Flexibility is imparted to the channel 92 by forming slits 96 in the upper and side surfaces of the channel. Longitudinal connection is provided by leaving areas 98 that run along the entire length of the inner ends of the curved side surfaces of the channel. Of course, either type of channel can be used in any of the modifications shown.
- the tubing or part can be heated to above the recovery temperature of the material from which it is fabricated. This heating will cause the part to recover toward its original dimensions with the result that the cable 94 will be tightly engaged.
- the interior surface of the tubing, as applied may be coated with a suitable heat activated adhesive so that a tight seal is obtained. Any other liner material that would not prevent the desired recovery of the part could also be used in this part, as well as in the parts of the other illustrated embodiments.
- the various parts shown and described above can be fabricated so that the two portions joined by the channel will bond together when the part is recovered. This can conveniently be done, for example, by only slightly cross-linking these two portions, so that these portions will be heat sealable at the recovery temperature. Parts of this nature, of course, cannot be removed and reinstalled, their installation being permanent.
- This object could also be obtained by fabricating the rails separately from the remainder of the part, from the same or different material, and then heat bonding the rail to the remainder of the part after the remainder has been crosslinked.
- Such a joinder of two or more separate elements, of the same or different material, to make one integral part could also be done, of course, to fabricate a nonbonding or removable part of the types illustrated. The only requirement for such a fabrication is that the materials used be compatible bonding materials.
- the shape of the rails illustrated and described is one generally having a flat top portion and rounded side portions leading into the necked-down portion, it will be obvious to those skilled in the art that the top portion of the rail can have any desired cross-section so long as it has a lateral dimension sufficiently larger than the lateral dimension of the necked-down portion to provide a secure connection or engagement with the channel. If necessary, the channel can be formed to match the particular rail configuration.
- a heat recoverable closure member comprising an elongated independently dimensionally heat unstable tubular member, an integral protuberance on the outer surface of said member and having a narrow portion adjacent said surface and a wide portion remote therefrom, said protuberance being longitudinally split along its entire length, and fastening means for retaining the split sides of said protuberance in abutting relationship during heat recovery of said member, said fastening means comprising a strip of material having a top surface for overlying the wide portion of said protuberance and curved side surfaces for extending around and under said wide portion of said protuberance.
- a heat recoverable closure member comprising an elongated tubular member of material having the property of elastic memory, an integral ridge on the outer surface of said member and extending along the length thereof, said ridge having a necked-down portion adjacent said surface and a wide portion remote therefrom, said ridge being longitudinally split along its entire length into two mating portions, and fastening means for sliding over said ridge and retaining said mating portions in abutting relationship during heat recovery of said member, said fastening means comprising a strip of flexible material having a top surface for overlying the wide portion of said ridge and curved side surfaces for extending around and under said wide portion of said ridge, the inner ends of said surfaces being separated by a distance greater than the thickness of said necked-down portion of said ridge.
- said fastening means comprises a generally C-shaped strip of material having a plurality of notches formed therein along the length thereof to render said strip flexible.
- a heat recoverable closure member comprising an elongated Y-shaped tubular member having a stern and a pair of arms extending therefrom, said tubular member being fabricated of a material having the property of elastic memory, a first integral ridge formed on the outer surface of said member and extending along the length of one arm and along one side of said stem, a second integral ridge formed on the outer surface of said member and extending along the length of the other arm and the other side of said stem, each of said ridges having a necked-down portion adjacent the surface of said member and a wide portion remote therefrom and being longitudinally split into two mating portions, and first and second fastening means for sliding over said first and sec ond ridges respectively and retaining the mating portions thereof in abutting relationship during heat recovery of said member, each of said fastening means comprising a strip of flexible material having a top surface for overlying said wide portion and curving side surfaces'for extending around and under said wide portion, the inner ends of said side surfaces being separated by a
- a closure member comprising an elongated tubular member, the wall thereof comprising a material which has been dimensionally changed from an original heat stable form to an independently dimensionally heat unstable form capable of moving in the direction of its original form upon the application of heat alone, an integral rail formed on the outer surface of said wall and extending along the length thereof, said rail having a necked-down portion adjacent said wall and a wide portion remote therefrom, said rail being longitudinally split along its entire length into two mating portions, and fastening means for sliding over said rail and retaining said mating portions in abutting relationship when said member is heated to the recovery temperature of said material, said fastening means comprising a strip of material having a top surface for overlying the wide portion of said rail and curved side surfaces for extending around and under said wide portion of said rail, the inner ends of said side surfaces being separated by a distance greater than the thickness of said necked-down portion of said rail.
- said fastening means comprises a generally C-shaped strip of material having a plurality of notches formed therein along the length thereof to render said strip flexible.
- a heat recoverable closure member comprising a piece of material having the property of elastic memory, a first integral protuberance formed on the surface of said material adjacent one edge thereof, a second integral protuberance formed on the surface of said material adjacent an opposite edge thereof, fastening means comprising a strip of flexible material having a top surface and curved side surfaces, the surfaces of said piece of material adjacent said edges being brought into abutting relationship with said protuberances extending outwardly therefrom and said fastening means being positioned around said protuberances, said protuberances cooperating with said fastening means to hold said surfaces in abutting relationship whereby a tubular member is formed from said piece of material, said fastening being capable of maintaining said surfaces in abutting relationship during heat recovery of said member.
- a closure member comprising an elongated tubular member of a material which has been dimensionally changed from an original heat stable form to an independently dimensionally heat unstable form capable of tudinal separation extending its entire length, a first integral protuberance formed on the outer surface of said member on one side of said separation, a second integral protuberance formed on the outer surface of said member on the other side of said separation, and fastening means for sliding over said protuberances and retaining the inner surfaces of said member adjacent said separation in abutting relationship, said fastening means comprising a strip of material having a top surface for overlying the edges of said member at said separation and curved side surfaces for extending around said protuberances and preventing removal of said protuberances from said fastening means as a result of a heat induced dimensional change.
- said fastening means comprises a generally C-shaped strip of material having a plurality of notches formed therein along the length thereof to render said strip flexible.
- a heat recoverable closure member adapted to be heat recovered onto an object having a larger dimension in the direction of recovery than said member after recovery, comprising: a piece of material that has been dimensionally changed from an original heat stable form to an independently dimensionally heat unstable form capable of moving in the direction of its original form upon the application of heat alone, said piece having first and second edge portions, said first edge portion having a first elongated integral protuberance extending outwardly therefrom, said first protuberance having a neckeddown portion adjacent to said edge portion and a Wide portion remote therefrom, said second edge portion having a second elongated integral protuberance extending outwardly therefrom, said second protuberance having a necked-down portion adjacent to said edge portion and a wide portion remote therefrom, said necked-down portions of said protuberances being brought into abutting relationship to form said piece of material into a tubular member, and fastening means for positioning over said protuberances, said fastening means being capable of maintaining said protuberances in
- said fastening means comprises a C-shaped strip of flexible material having a top surface for overlying said wide portions of said protuberances and curved side surfaces for extending around said wide portions and into said necked-down portions of said protuberances.
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Supports For Pipes And Cables (AREA)
- Insulating Bodies (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US50616165A | 1965-11-03 | 1965-11-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3455336A true US3455336A (en) | 1969-07-15 |
Family
ID=24013458
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US506161A Expired - Lifetime US3455336A (en) | 1965-11-03 | 1965-11-03 | Heat recoverable article and process |
Country Status (9)
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US3847721A (en) * | 1971-04-02 | 1974-11-12 | Raychem Corp | Heat recoverable articles and methods therefor |
US3940008A (en) * | 1972-05-22 | 1976-02-24 | Flanders Robert D | Collapsible reusable barrel for fluids |
DE2543338A1 (de) * | 1974-09-27 | 1976-04-15 | Raychem Corp | Waermerueckstellfaehiger gegenstand zur umhuellung und abdichtung einer leiterverbindung |
US3982564A (en) * | 1973-12-10 | 1976-09-28 | Raychem Corporation | Heat recoverable article |
US3991243A (en) * | 1974-12-09 | 1976-11-09 | Raychem Corporation | Method of making a reinforced insert weld and resulting article |
US4008305A (en) * | 1971-08-09 | 1977-02-15 | General Binding Corporation | Method of manufacturing a book binding element |
DE2635001A1 (de) * | 1975-08-04 | 1977-02-24 | Raychem Sa Nv | Waermerueckstellfaehige gegenstaende |
DE2635000A1 (de) * | 1975-08-04 | 1977-03-03 | Raychem Corp | Selbsterhitzende gegenstaende mit gewebeelektroden |
US4029441A (en) * | 1974-04-24 | 1977-06-14 | Sermem S.A. | Tubing means for roller pump |
US4085286A (en) * | 1974-09-27 | 1978-04-18 | Raychem Corporation | Heat-recoverable sealing article with self-contained heating means and method of sealing a splice therewith |
FR2414263A1 (fr) * | 1978-01-09 | 1979-08-03 | Raychem Sa Nv | Procede de branchement |
US4182378A (en) * | 1976-10-20 | 1980-01-08 | Dieter Spezial-Isolierungen Gmbh & Co. | Spacing element for spacing an inner pipe from an outer pipe |
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US4241119A (en) * | 1976-01-22 | 1980-12-23 | The Post Office | Dimensionally heat-unstable products |
EP0023788A1 (en) * | 1979-07-19 | 1981-02-11 | RAYCHEM CORPORATION (a California corporation) | Arrangement and method for covering elongate substrates |
US4268559A (en) * | 1978-09-22 | 1981-05-19 | Electronized Chemicals Corporation | Heat-shrinkable article |
US4273286A (en) * | 1977-11-29 | 1981-06-16 | Ris Irrigation Systems | Conduit for drip irrigation systems |
US4276909A (en) * | 1977-12-23 | 1981-07-07 | Francois Biscop | Heat-recoverable wrap-around devices |
US4280258A (en) * | 1978-05-09 | 1981-07-28 | Siemens Aktiengesellschaft | Cable sleeve having a closable, longitudinal slit |
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US4293111A (en) * | 1973-08-14 | 1981-10-06 | Kennecott Corporation | Bag filter support cage |
US4298641A (en) * | 1975-04-04 | 1981-11-03 | N.V. Raychem S.A. | Heat recoverable article |
EP0045213A1 (en) * | 1980-07-28 | 1982-02-03 | Raychem Limited | Heat recoverable article and process for producing the same |
US4318220A (en) * | 1979-04-19 | 1982-03-09 | Raychem Corporation | Process for recovering heat recoverable sheet material |
US4352512A (en) * | 1979-04-19 | 1982-10-05 | Certain-Teed Corporation | Molded fittings |
EP0065383A1 (en) * | 1981-05-18 | 1982-11-24 | AMP INCORPORATED (a New Jersey corporation) | Heat recoverable sleeve forming wrap |
US4364419A (en) * | 1980-03-14 | 1982-12-21 | Raychem Corporation | Heat-recoverable wraparound closure |
US4366201A (en) * | 1980-07-28 | 1982-12-28 | Raychem Corporation | Heat shrinkable wraparound closures |
US4366011A (en) * | 1978-02-21 | 1982-12-28 | N.V. Raychem S.A. | Heat-recoverable reinforced enclosure |
US4378393A (en) * | 1978-09-22 | 1983-03-29 | High Voltage Engineering Corporation | Heat-shrinkable article |
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US4384906A (en) * | 1981-09-09 | 1983-05-24 | Raychem Corporation | Flat sheet closure and method |
US4384404A (en) * | 1979-03-09 | 1983-05-24 | Raychem Corporation | Heat-recoverable articles and method of connecting two electrical conductors |
US4388488A (en) * | 1979-09-27 | 1983-06-14 | Siemens Aktiengesellschaft | Sealing system for a longitudinally divided cable fitting element |
JPS58108914A (ja) * | 1972-09-08 | 1983-06-29 | エヌ・ブイ・レイケム・ソシエテ・アノニム | 電線間接続部分保護組立体の再封止方法 |
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US4400579A (en) * | 1978-01-09 | 1983-08-23 | N.V. Raychem S.A. | Branch-off assembly |
US4399840A (en) * | 1982-04-26 | 1983-08-23 | Morris M. Lee | Closure member |
US4401842A (en) * | 1981-07-20 | 1983-08-30 | Raychem Corporation | Heat recoverable closure device having crack propagation prevention means |
US4407534A (en) * | 1980-01-02 | 1983-10-04 | Petz Guenter | Arrangement for connecting edge areas of thin-walled bodies |
US4409426A (en) * | 1978-10-27 | 1983-10-11 | N.V. Raychem S.A. | Splice case |
US4419304A (en) * | 1980-07-15 | 1983-12-06 | Western Electric Company, Inc. | Method for forming seals with heat shrinkable materials |
US4442153A (en) * | 1980-12-19 | 1984-04-10 | Siemens Aktiengesellschaft | Longitudinally divided cable sleeve of thermo-plastic synthetic material with a shape memory |
US4448824A (en) * | 1982-01-28 | 1984-05-15 | Raychem Corporation | Wraparound protective closure |
US4455204A (en) * | 1981-07-13 | 1984-06-19 | Raychem Corporation | Protecting metal substrates from corrosion |
US4458104A (en) * | 1981-06-22 | 1984-07-03 | Raychem Limited | Dimensionally recoverable articles |
US4466843A (en) * | 1981-06-08 | 1984-08-21 | Raychem Corporation | Protection of cable splice |
US4467137A (en) * | 1982-06-21 | 1984-08-21 | Raychem Limited | Cable breakout article |
EP0116392A2 (en) | 1983-01-06 | 1984-08-22 | Raychem Limited | Wrap-around recoverable article |
US4478486A (en) * | 1982-08-12 | 1984-10-23 | Raychem Corporation | Fiber optic splice organizer |
DE3317379A1 (de) * | 1983-05-13 | 1984-11-15 | Minnesota Mining And Manufacturing Co., Saint Paul, Minn. | Waermeschrumpfbare manschette fuer elektrische kabel und kabelverbindungen |
US4496410A (en) * | 1981-04-02 | 1985-01-29 | Raychem Limited | Production of dimensionally recoverable articles |
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US4498732A (en) * | 1982-01-15 | 1985-02-12 | Raychem Corporation | Fiber optic splice organizer |
US4511415A (en) * | 1983-02-28 | 1985-04-16 | Thomas & Betts Corporation | Method of sealing an electrical cable |
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US4524808A (en) * | 1983-01-31 | 1985-06-25 | Siemens Aktiengesellschaft | Vacuum cleaner hose |
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US4533419A (en) * | 1981-11-02 | 1985-08-06 | Raychem Corporation | Patch closure system |
US4536445A (en) * | 1981-12-28 | 1985-08-20 | Raychem Corporation | Elastomer based adhesive compositions |
DE3405456A1 (de) * | 1984-02-16 | 1985-08-22 | Bayerische Motoren Werke AG, 8000 München | Verbindung zweier bauteile, insbesondere zweier kunststoffhalbschalen |
US4555422A (en) * | 1983-01-15 | 1985-11-26 | Fujikura Ltd | Heat shrinkable magnetic shielding article |
US4560828A (en) * | 1982-05-11 | 1985-12-24 | Raychem Corporation | Tubular article for branch-off seal |
US4565417A (en) * | 1984-03-06 | 1986-01-21 | Siemens Aktiengesellschaft | Single pole plug connector arranged at the end of a single conductor shielded electric cable |
US4647713A (en) * | 1984-10-25 | 1987-03-03 | Nijs Jacob De | Pressurized telecommunication cable joint closure method and apparatus |
US4647718A (en) * | 1982-05-03 | 1987-03-03 | Raychem Corporation | Assembly and method for cable joint protection |
US4648919A (en) * | 1984-09-18 | 1987-03-10 | Raychem Corp. | Protection of cable splice |
US4658504A (en) * | 1985-08-23 | 1987-04-21 | Westinghouse Electric Corp. | Method for insulating conductor joints particularly bus bars and insulated bus bar apparatus |
US4665280A (en) * | 1984-08-13 | 1987-05-12 | Amp Incorporated | Undercarpet cabling fixture |
US4685683A (en) * | 1982-07-26 | 1987-08-11 | Raychem Corporation | Flexible envelope seal and sealing method |
US4713272A (en) * | 1985-05-23 | 1987-12-15 | Siemens Aktiengesellschaft | Longitudinally divided sleeve of shrinkable material |
US4731273A (en) * | 1985-07-08 | 1988-03-15 | Minnesota Mining And Manufacturing Company | Heat-recoverable closure with crosslinked pressure-sensitive adhesive |
US4749822A (en) * | 1986-07-03 | 1988-06-07 | The Zippertubing Company | Shielded boot for cable connector |
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- 1966-11-03 DE DE19661525815 patent/DE1525815B1/de active Pending
- 1966-11-03 CH CH1589566A patent/CH455900A/de unknown
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Publication number | Priority date | Publication date | Assignee | Title |
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US3668609A (en) * | 1970-03-30 | 1972-06-06 | Rte Corp | Hot line connector |
US3662094A (en) * | 1970-07-06 | 1972-05-09 | Raychem Corp | Heat recoverable insulating cover for electrical terminal, and method of manufacture |
US3847721A (en) * | 1971-04-02 | 1974-11-12 | Raychem Corp | Heat recoverable articles and methods therefor |
US4008305A (en) * | 1971-08-09 | 1977-02-15 | General Binding Corporation | Method of manufacturing a book binding element |
US3940008A (en) * | 1972-05-22 | 1976-02-24 | Flanders Robert D | Collapsible reusable barrel for fluids |
JPS58108914A (ja) * | 1972-09-08 | 1983-06-29 | エヌ・ブイ・レイケム・ソシエテ・アノニム | 電線間接続部分保護組立体の再封止方法 |
JPS635970B2 (US20040232935A1-20041125-M00001.png) * | 1972-09-08 | 1988-02-06 | Raychem Sa Nv | |
US4293111A (en) * | 1973-08-14 | 1981-10-06 | Kennecott Corporation | Bag filter support cage |
US3982564A (en) * | 1973-12-10 | 1976-09-28 | Raychem Corporation | Heat recoverable article |
US4029441A (en) * | 1974-04-24 | 1977-06-14 | Sermem S.A. | Tubing means for roller pump |
US4085286A (en) * | 1974-09-27 | 1978-04-18 | Raychem Corporation | Heat-recoverable sealing article with self-contained heating means and method of sealing a splice therewith |
DE2560273C2 (US20040232935A1-20041125-M00001.png) * | 1974-09-27 | 1990-10-25 | Raychem Corp. (N.D.Ges.D.Staates Delaware), Menlo Park, Calif., Us | |
DE2543338A1 (de) * | 1974-09-27 | 1976-04-15 | Raychem Corp | Waermerueckstellfaehiger gegenstand zur umhuellung und abdichtung einer leiterverbindung |
US3991243A (en) * | 1974-12-09 | 1976-11-09 | Raychem Corporation | Method of making a reinforced insert weld and resulting article |
US4298641A (en) * | 1975-04-04 | 1981-11-03 | N.V. Raychem S.A. | Heat recoverable article |
US4219051A (en) * | 1975-08-04 | 1980-08-26 | N.V. Raychem S.A. | Heat recoverable article |
DE2635000A1 (de) * | 1975-08-04 | 1977-03-03 | Raychem Corp | Selbsterhitzende gegenstaende mit gewebeelektroden |
DE2635001A1 (de) * | 1975-08-04 | 1977-02-24 | Raychem Sa Nv | Waermerueckstellfaehige gegenstaende |
US4241119A (en) * | 1976-01-22 | 1980-12-23 | The Post Office | Dimensionally heat-unstable products |
US4182378A (en) * | 1976-10-20 | 1980-01-08 | Dieter Spezial-Isolierungen Gmbh & Co. | Spacing element for spacing an inner pipe from an outer pipe |
US4273286A (en) * | 1977-11-29 | 1981-06-16 | Ris Irrigation Systems | Conduit for drip irrigation systems |
US4237174A (en) * | 1977-12-23 | 1980-12-02 | Lagardere Bruno J F | Wrap-around devices |
US4276909A (en) * | 1977-12-23 | 1981-07-07 | Francois Biscop | Heat-recoverable wrap-around devices |
FR2542516A1 (fr) * | 1978-01-09 | 1984-09-14 | Raychem Sa Nv | Procede de branchement mettant en oeuvre une pince |
US4298415A (en) * | 1978-01-09 | 1981-11-03 | N.V. Raychem S.A. | Branch-off method |
US4400579A (en) * | 1978-01-09 | 1983-08-23 | N.V. Raychem S.A. | Branch-off assembly |
US4734543A (en) * | 1978-01-09 | 1988-03-29 | Nolf Jean Marie E | Branch-off assembly |
FR2542517A1 (fr) * | 1978-01-09 | 1984-09-14 | Raychem Sa Nv | Pince utilisable pour la realisation de scellements |
US4648924A (en) * | 1978-01-09 | 1987-03-10 | N.V. Raychem S.A. | Branch-off method |
FR2414263A1 (fr) * | 1978-01-09 | 1979-08-03 | Raychem Sa Nv | Procede de branchement |
US4283239A (en) * | 1978-02-21 | 1981-08-11 | N.V. Raychem S.A. | Bracing method |
US4366011A (en) * | 1978-02-21 | 1982-12-28 | N.V. Raychem S.A. | Heat-recoverable reinforced enclosure |
US4280258A (en) * | 1978-05-09 | 1981-07-28 | Siemens Aktiengesellschaft | Cable sleeve having a closable, longitudinal slit |
US4268559A (en) * | 1978-09-22 | 1981-05-19 | Electronized Chemicals Corporation | Heat-shrinkable article |
US4378393A (en) * | 1978-09-22 | 1983-03-29 | High Voltage Engineering Corporation | Heat-shrinkable article |
US4409426A (en) * | 1978-10-27 | 1983-10-11 | N.V. Raychem S.A. | Splice case |
US4466846A (en) * | 1978-10-27 | 1984-08-21 | N.V. Raychem S.A. | Method of using heat-recoverable articles to produce a pressurizable casing around a substrate |
US4234020A (en) * | 1978-12-06 | 1980-11-18 | Raychem Corporation | Heat recoverable closure assembly and method |
US4384404A (en) * | 1979-03-09 | 1983-05-24 | Raychem Corporation | Heat-recoverable articles and method of connecting two electrical conductors |
US4352512A (en) * | 1979-04-19 | 1982-10-05 | Certain-Teed Corporation | Molded fittings |
US4318220A (en) * | 1979-04-19 | 1982-03-09 | Raychem Corporation | Process for recovering heat recoverable sheet material |
EP0020007A1 (en) * | 1979-05-11 | 1980-12-10 | Radiation Dynamics Inc. | Method of bonding sheet materials to form wraps |
EP0023788A1 (en) * | 1979-07-19 | 1981-02-11 | RAYCHEM CORPORATION (a California corporation) | Arrangement and method for covering elongate substrates |
US4396656A (en) * | 1979-08-02 | 1983-08-02 | Kabel-Und Metallwerke Gutehoffnungshutte Aktiengesellschaft | Longitudinally divided hose-like filling |
US4388488A (en) * | 1979-09-27 | 1983-06-14 | Siemens Aktiengesellschaft | Sealing system for a longitudinally divided cable fitting element |
US4407534A (en) * | 1980-01-02 | 1983-10-04 | Petz Guenter | Arrangement for connecting edge areas of thin-walled bodies |
US4379473A (en) * | 1980-03-10 | 1983-04-12 | Siemens Aktiengesellschaft | Longitudinally divided cable sleeve of a shrinkable material |
US4364419A (en) * | 1980-03-14 | 1982-12-21 | Raychem Corporation | Heat-recoverable wraparound closure |
US4419304A (en) * | 1980-07-15 | 1983-12-06 | Western Electric Company, Inc. | Method for forming seals with heat shrinkable materials |
US4366201A (en) * | 1980-07-28 | 1982-12-28 | Raychem Corporation | Heat shrinkable wraparound closures |
EP0045213A1 (en) * | 1980-07-28 | 1982-02-03 | Raychem Limited | Heat recoverable article and process for producing the same |
US4442153A (en) * | 1980-12-19 | 1984-04-10 | Siemens Aktiengesellschaft | Longitudinally divided cable sleeve of thermo-plastic synthetic material with a shape memory |
US4496410A (en) * | 1981-04-02 | 1985-01-29 | Raychem Limited | Production of dimensionally recoverable articles |
US4517234A (en) * | 1981-05-18 | 1985-05-14 | Amp Incorporated | Heat recoverable sleeve forming wrap |
EP0065383A1 (en) * | 1981-05-18 | 1982-11-24 | AMP INCORPORATED (a New Jersey corporation) | Heat recoverable sleeve forming wrap |
US4466843A (en) * | 1981-06-08 | 1984-08-21 | Raychem Corporation | Protection of cable splice |
US4458104A (en) * | 1981-06-22 | 1984-07-03 | Raychem Limited | Dimensionally recoverable articles |
US4455204A (en) * | 1981-07-13 | 1984-06-19 | Raychem Corporation | Protecting metal substrates from corrosion |
US4401842A (en) * | 1981-07-20 | 1983-08-30 | Raychem Corporation | Heat recoverable closure device having crack propagation prevention means |
US4518819A (en) * | 1981-07-30 | 1985-05-21 | Raychem Corporation | Clamp assembly for power cables |
US4384906A (en) * | 1981-09-09 | 1983-05-24 | Raychem Corporation | Flat sheet closure and method |
US4533419A (en) * | 1981-11-02 | 1985-08-06 | Raychem Corporation | Patch closure system |
US4497926A (en) * | 1981-12-28 | 1985-02-05 | Raychem Corporation | Elastomer based adhesive compositions |
US4536445A (en) * | 1981-12-28 | 1985-08-20 | Raychem Corporation | Elastomer based adhesive compositions |
US4498732A (en) * | 1982-01-15 | 1985-02-12 | Raychem Corporation | Fiber optic splice organizer |
US4759811A (en) * | 1982-01-21 | 1988-07-26 | Raychem Corporation | Method for repair or accessing pressurized cable |
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US4399840A (en) * | 1982-04-26 | 1983-08-23 | Morris M. Lee | Closure member |
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US4685683A (en) * | 1982-07-26 | 1987-08-11 | Raychem Corporation | Flexible envelope seal and sealing method |
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US4940820A (en) * | 1983-01-06 | 1990-07-10 | Matsushita Electric Industrial Co., Ltd. | Wraparound recovery article |
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US4699743A (en) * | 1983-01-15 | 1987-10-13 | Fujikura Ltd | Method of recovering a heat shrinkable magnetic shielding article over an electrical component |
US4524808A (en) * | 1983-01-31 | 1985-06-25 | Siemens Aktiengesellschaft | Vacuum cleaner hose |
US4511415A (en) * | 1983-02-28 | 1985-04-16 | Thomas & Betts Corporation | Method of sealing an electrical cable |
US4891256A (en) * | 1983-04-26 | 1990-01-02 | The Bentley-Harris Manufacturing Co. | Wraparound closure device and a method of making same |
DE3317379A1 (de) * | 1983-05-13 | 1984-11-15 | Minnesota Mining And Manufacturing Co., Saint Paul, Minn. | Waermeschrumpfbare manschette fuer elektrische kabel und kabelverbindungen |
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US4767652A (en) * | 1984-01-10 | 1988-08-30 | Raychem Corporation | Pressure retaining enclosure |
EP0158046B1 (de) * | 1984-02-16 | 1987-05-20 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Verbindung zweier Bauteile, insbesondere zweier Kunststoffhalbschalen |
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US4565417A (en) * | 1984-03-06 | 1986-01-21 | Siemens Aktiengesellschaft | Single pole plug connector arranged at the end of a single conductor shielded electric cable |
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US4648919A (en) * | 1984-09-18 | 1987-03-10 | Raychem Corp. | Protection of cable splice |
US4647713A (en) * | 1984-10-25 | 1987-03-03 | Nijs Jacob De | Pressurized telecommunication cable joint closure method and apparatus |
US4713272A (en) * | 1985-05-23 | 1987-12-15 | Siemens Aktiengesellschaft | Longitudinally divided sleeve of shrinkable material |
US4731273A (en) * | 1985-07-08 | 1988-03-15 | Minnesota Mining And Manufacturing Company | Heat-recoverable closure with crosslinked pressure-sensitive adhesive |
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US4658504A (en) * | 1985-08-23 | 1987-04-21 | Westinghouse Electric Corp. | Method for insulating conductor joints particularly bus bars and insulated bus bar apparatus |
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US20190379151A1 (en) * | 2017-01-25 | 2019-12-12 | Sumitomo Wiring Systems, Ltd. | Cover member and wire harness |
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Also Published As
Publication number | Publication date |
---|---|
SE349905B (US20040232935A1-20041125-M00001.png) | 1972-10-09 |
DE1525815B1 (de) | 1971-08-05 |
BE689224A (US20040232935A1-20041125-M00001.png) | 1967-04-14 |
CH455900A (de) | 1968-05-15 |
FR1499592A (fr) | 1967-10-27 |
JPS516191B1 (US20040232935A1-20041125-M00001.png) | 1976-02-26 |
NL144792B (nl) | 1975-01-15 |
GB1155470A (en) | 1969-06-18 |
NL6615467A (US20040232935A1-20041125-M00001.png) | 1967-05-05 |
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