Patent US4022308A successfully refreshed from Google Patents.
Patent US4039248A successfully refreshed from Google Patents.
US4039248A
Expired / Lapsed
US
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Sheathed fiber light conductor
Assignee: Kabel Rheydt AG
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Filing: 1975-09-19
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Granted: 1977-08-02
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Expires: 1995-09-19
Abstract
Abstract A fiber light conductor housed in a hollow tubular sheath with the conductor being given an undulating configuration in order to minimize the adverse influence thereon of mechanical stresses and external forces.
Inventors
- 👤 Hermann Franke
- 👤 Willi Kuckes
- 👤 Wolfgang Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:14
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4429; G02B6/443; G02B6/4405
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
103 words
In a light conducting unit for a light conducting cable, the unit including a fiber light conductor and a sheath enclosing and supporting the conductor, the improvement wherein said sheath is a hollow tubular sheath and said conductor is shaped in a manner such that its longitudinal axis follows a substantially uniform undulating path along the length of said tube and said conductor contacts the inner wall of the sheath only at spaced intervals and is out of contact with the inner wall in regions between such intervals for permitting said conductor to yield in an elastically resilient manner due to mechanical stresses.
Claim 2
Dependent Claim
103 words
In a light conducting unit for a light conducting cable, the unit including a fiber light conductor and a sheath enclosing and supporting the conductor, the improvement wherein said sheath is a hollow tubular sheath and said conductor is shaped in a manner such that its longitudinal axis follows a substantially uniform undulating path along the length of said tube and said conductor contacts the inner wall of the sheath only at spaced intervals and is out of contact with the inner wall in regions between such intervals for permitting said conductor to yield in an elastically resilient manner due to mechanical stresses.
Claim 3
Dependent Claim
101 words
A method for producing the unit defined in claim 1 comprising the steps of: providing a fiber light conductor wound on a supply reel; continuously withdrawing the conductor from the supply reel while controlling the tension on the conductor; continuously forming the hollow sheath in an extruder head and conveying the sheath away therefrom; continuously introducing the conductor into the sheath as the latter is being formed by passing the conductor through an installation device which undergoes cyclic movement transverse to the axis of the sheath in a manner to cause the conductor to follow such undulating path within the sheath.
Claim 4
Dependent Claim
53 words
An arrangement as defined in claim 1 wherein the undulating path followed by said conductor has the form of a periodically repeating wave whose wavelength is of a magnitude such that light transmission losses due to the undulating shape of said conductor are negligibly small compared with those attributable to said conductor itself.
Claim 5
Dependent Claim
16 words
An arrangement as defined in claim 1 wherein said conductor is a glass fiber light conductor.
Claim 6
Dependent Claim
25 words
An arrangement as defined in claim 1 wherein the axis of said conductor lies in a single plane parallel to the axis of said sheath.
Claim 7
Dependent Claim
26 words
An arrangement as defined in claim 1 wherein the axes of said conductor lies in a plurality of planes parallel to the axis of said sheath.
Claim 8
Dependent Claim
21 words
An arrangement as defined in claim 1 wherein the path of the axis of said conductor is only periodically regularly undulated.
Claim 9
Dependent Claim
21 words
An arrangement as defined in claim 1 wherein said conductor is held in place at least at intervals along its length.
Claim 10
Dependent Claim
42 words
An arrangement as defined in claim 8 wherein the wall of said sheath is provided with openings spaced along the length of said sheath and further comprising foamed bodies inserted into said sheath through said openings and holding said conductor in place.
Claim 11
Dependent Claim
41 words
An arrangement as defined in claim 8 further comprising a plurality of discs provided with eccentric notches and inserted into said sheath at spaced intervals along its length, said conductor being held by said discs by engaging in said notches thereof.
Claim 12
Dependent Claim
18 words
An arrangement as defined in claim 8 wherein said conductor is held in place along its entire length.
Claim 13
Dependent Claim
26 words
An arrangement as defined in claim 8 further comprising a band-shaped support member which is inserted into said sheath and to which said conductor is fastened.
Claim 14
Dependent Claim
32 words
An arrangement as defined in claim 12 wherein said support member is slit to define a plurality of fastening tongues at spaced intervals thereon and said conductor is held by said tongues.
Claim 15
Dependent Claim
37 words
An arrangement as defined in claim 12 wherein said support member is slit at intervals along its length and further comprising U-shaped bars which are inserted into the slits in said support member and holding said conductor.
Claim 16
Dependent Claim
35 words
An arrangement as defined in claim 8 wherein the inner wall of said sheath is provided with protrusions spaced along the length of said sheath and said conductor is held in place by said protrusions.
Claim 17
Dependent Claim
44 words
An arrangement as defined in claim 15 wherein said protrusions are arranged in pairs, with the protrusions of each pair being adjacent one another and being spaced apart to define a recess, and each such recess is engaged by a bend in said conductor.
References Cited (Backward Citations)
US2636923A
Cited
US3699950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-01 | 1981-01-31 | 1981-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-01 | 1985-01-31 | 1985-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-01 | 1989-01-31 | 1989-08-02 | $7700.00 | Window Closed / Lapsed |