FR2380487A1 - Reinforced rubber sleeve couplings for telephone line conduits - to combine easy assembly with flexibility and enhanced tensile grip - Google Patents

Reinforced rubber sleeve couplings for telephone line conduits - to combine easy assembly with flexibility and enhanced tensile grip

Info

Publication number
FR2380487A1
FR2380487A1 FR7703986A FR7703986A FR2380487A1 FR 2380487 A1 FR2380487 A1 FR 2380487A1 FR 7703986 A FR7703986 A FR 7703986A FR 7703986 A FR7703986 A FR 7703986A FR 2380487 A1 FR2380487 A1 FR 2380487A1
Authority
FR
France
Prior art keywords
pref
couplings
sleeve
flexibility
telephone line
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.)
Pending
Application number
FR7703986A
Other languages
French (fr)
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.)
EWING ENGINEERING CY
Original Assignee
EWING ENGINEERING CY
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by EWING ENGINEERING CY filed Critical EWING ENGINEERING CY
Priority to FR7703986A priority Critical patent/FR2380487A1/en
Publication of FR2380487A1 publication Critical patent/FR2380487A1/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/10—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations
    • F16L27/107—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve
    • 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
    • F16L47/06—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end

Abstract

Pipe couplings, comprising tubular sleeves of rubber reinforced with one or more layers of helically wound cords and for joining rigid or semi-rigid pipe of external dia. D, are characterised as follows: a length/dia. ratio of 0.5-2, a wall thickness of 0.006-0.09 D pref. 0.015-0.035 D, an axial compressibility of >=1.25 x 10-4 pref. >5 x 10-3 cm./kg., and a tensile strength >=20D, pref. >=50D kg. The cords are made of fibres having a modulus of >=4 x 107 kg./cm2 and are wound at an angle of 45-70 degrees, pref. 55-75 degrees to the sleeve axis. The matrix rubber should have a moduli of >=1.75 kg./cm2 at 100% elongation, >=3.5 kg./cm2 at 300% elongation, a tensile strength of >=20 kg./cm2 and a hardness of 15-90, pref. 15-70 Shore A. The internal layer of the sleeve should have a coefficient of friction of >=0.7, pref. >=0.8 with the pipe surface. The tear resistance of the sleeve should be >=1 kgf./linear cm. Used esp. for coupling lengths of PVC or ABS conduit for enclosing telephone cables, where coupled conduit must be pulled or bent during installation and resist the stresses of subsequently having cables drawn through the conduits. The couplings are readily assembled without involving special tools, hot welding or (flammable) solvents. The force necessary to assemble the couplings is significantly less than that needed to part the joints, by a ratio of =1:3, pref. =1:8.
FR7703986A 1977-02-11 1977-02-11 Reinforced rubber sleeve couplings for telephone line conduits - to combine easy assembly with flexibility and enhanced tensile grip Pending FR2380487A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7703986A FR2380487A1 (en) 1977-02-11 1977-02-11 Reinforced rubber sleeve couplings for telephone line conduits - to combine easy assembly with flexibility and enhanced tensile grip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7703986A FR2380487A1 (en) 1977-02-11 1977-02-11 Reinforced rubber sleeve couplings for telephone line conduits - to combine easy assembly with flexibility and enhanced tensile grip

Publications (1)

Publication Number Publication Date
FR2380487A1 true FR2380487A1 (en) 1978-09-08

Family

ID=9186646

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7703986A Pending FR2380487A1 (en) 1977-02-11 1977-02-11 Reinforced rubber sleeve couplings for telephone line conduits - to combine easy assembly with flexibility and enhanced tensile grip

Country Status (1)

Country Link
FR (1) FR2380487A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB627279A (en) * 1947-02-24 1949-08-04 Clare Collets Ltd Improvements relating to milling cutters and arbors therefor
FR1158007A (en) * 1956-08-17 1958-06-06 Fabrication De Tubes En Matier tubular element with composite walls, process and equipment for its manufacture
FR2142764A1 (en) * 1971-06-24 1973-02-02 Orszagos Gumiipari Vallalat Reinforced rubber hose - with helical windings at angles phased to resist torsion
US3905399A (en) * 1973-01-02 1975-09-16 Uniroyal Ltd Liquid-conveying hose
AU473357B2 (en) * 1972-07-31 1976-06-17 Roc La Concrete Pipes Limited PIPE joint
FR2313622A1 (en) * 1975-06-06 1976-12-31 Goodyear Tire & Rubber REINFORCED HOSE, ESPECIALLY ELASTOMERIC

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB627279A (en) * 1947-02-24 1949-08-04 Clare Collets Ltd Improvements relating to milling cutters and arbors therefor
FR1158007A (en) * 1956-08-17 1958-06-06 Fabrication De Tubes En Matier tubular element with composite walls, process and equipment for its manufacture
FR2142764A1 (en) * 1971-06-24 1973-02-02 Orszagos Gumiipari Vallalat Reinforced rubber hose - with helical windings at angles phased to resist torsion
AU473357B2 (en) * 1972-07-31 1976-06-17 Roc La Concrete Pipes Limited PIPE joint
US3905399A (en) * 1973-01-02 1975-09-16 Uniroyal Ltd Liquid-conveying hose
FR2313622A1 (en) * 1975-06-06 1976-12-31 Goodyear Tire & Rubber REINFORCED HOSE, ESPECIALLY ELASTOMERIC

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