§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
EP0742456A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Method for butt-coupling optical fibre connectors comprising a cylindrical ferrule

Assignee: Sirti SpA
•
Filing: 1996-05-03
•
Granted: —
•
Expires: 2016-05-03
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract The method for butt-coupling an optical fibre connector comprising a cylindrical ferrule consists of the following steps: a) preparing the head of the optical fibre for insertion into the ferrule; b) applying a thin layer of resin to the fibre, taking care not to soil the cut end of the fibre with said resin; c) inserting said fibre into the sized hole of the cylindrical ferrule; d) by means of an alignment bush, coupling said ferrule to a reference ferrule in which a piece of fibre has been previously housed and fixed such that the end surface of said fibre lies inward of the end surface of the reference ferrule; e) crosslinking the resin.

Inventors

  • 👤 Stefano Pitassi

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-06 17:27
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/36; G02B6/38; G02B6/3807; G02B6/3833; G02B6/3855; G02B6/3861; G02B6/3847; G02B6/3863; G02B6/3873; G02B6/3874

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 144 words
A method for butt-coupling optical fibre connectors comprising a cylindrical ferrule, consisting of the following steps: a) preparing the head of the optical fibre and cutting its end for insertion into the hole in the cylindrical ferrule; b) applying a thin layer of resin to the fibre, taking care not to soil the cut end of the fibre with said resin; c) inserting said fibre into the sized hole of the cylindrical ferrule, the end surface of which has been previously lapped in a convex manner; d) by means of an alignment bush, coupling said ferrule to a reference ferrule the end surface of which is convex, and in which a piece of fibre has been previously housed and fixed such that the end surface of said fibre lies inward of the end surface of the reference ferrule; e) crosslinking the resin by heating.
Claim 2
Dependent Claim 17 words
A method as claimed in claim 1, characterised in that said crosslinking takes place at ambient temperature.
Claim 3
Dependent Claim 30 words
A method as claimed in claim 1 or 2, characterised in that following the operation under point e), the fibre inserted into the ferrule is further polished at its end.
Claim 4
Dependent Claim 31 words
A method as claimed in claim 1 or 2, characterised in that the cut surface of the fibre inserted into the ferrule is perpendicular to the longitudinal axis of the fibre.
Claim 5
Independent Claim 27 words
A method as claimed in any one of the preceding claims, characterised in that the ferrule is assembled together with all the constituent parts of the connector.

References Cited (Backward Citations)

US3948582A Cited
EP0095281A2 Cited
GB2176906A Cited
EP0223609A2 Cited
EP0298144A1 Cited
EP0621107A1 Cited

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag