US5000537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sleeve for an optical fiber connector and fabricating method therefor
Assignee: Nippon Optolonics Kenkyusho KK
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Filing: 1989-05-25
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Granted: 1991-03-19
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Expires: 2009-05-25
Abstract
Abstract A sleeve for an optical fiber connector and fabricating method therefor for detachably connecting optical fibers mutually by gripping with an elastic restoring force plug ferrules at respective ends of optical fibers in a mutually matched state, the sleeve being made of resilient materials such as phosphor bronze, beryllium copper, high carbon steel and stainless steel, in a tubular form with an approximately C-shaped cross-section having a slit over its entire length, the ferrules being mutually inserted into both ends of the sleeve in an axial direction, wherein the slit is formed along the entire length of the sleeve and the tubular sleeve is formed by a process other than cutting or drilling.
Inventors
- 👤 Ken Saito
- 👤 Koji Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:29
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/36; G02B6/38; G02B6/3807; G02B6/3873; G02B6/3874; G02B6/3877
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
134 words
A process for fabricating a sleeve for an optical fiber connector for mutually detachably connecting optical fibers by gripping plug ferrules formed at respective ends of said optical fibers with an elastic restoring force, said ferrules being in a mutually matched abutting state, comprising the steps of: selecting a resilient metal material; forming said resilient material into a tubular shape, thereby forming a metal tube having an outer diameter and an elongate hole therethrough defining an inner diameter, wherein said hole is formed by a process other than cutting or drilling; cutting said tube in an axial direction to form a plurality of tubular sections; forming a longitudinal slit along an entire length of said tubular sections so that said sections are approximately C-shaped in cross-section having said slit over the entire length thereof.
Claim 2
Dependent Claim
134 words
A process for fabricating a sleeve for an optical fiber connector for mutually detachably connecting optical fibers by gripping plug ferrules formed at respective ends of said optical fibers with an elastic restoring force, said ferrules being in a mutually matched abutting state, comprising the steps of: selecting a resilient metal material; forming said resilient material into a tubular shape, thereby forming a metal tube having an outer diameter and an elongate hole therethrough defining an inner diameter, wherein said hole is formed by a process other than cutting or drilling; cutting said tube in an axial direction to form a plurality of tubular sections; forming a longitudinal slit along an entire length of said tubular sections so that said sections are approximately C-shaped in cross-section having said slit over the entire length thereof.
Claim 3
Dependent Claim
134 words
A process for fabricating a sleeve for an optical fiber connector for mutually detachably connecting optical fibers by gripping plug ferrules formed at respective ends of said optical fibers with an elastic restoring force, said ferrules being in a mutually matched abutting state, comprising the steps of: selecting a resilient metal material; forming said resilient material into a tubular shape, thereby forming a metal tube having an outer diameter and an elongate hole therethrough defining an inner diameter, wherein said hole is formed by a process other than cutting or drilling; forming a longitudinal slit along an entire length of said metal tube so that said tube is approximately C-shaped in cross-section having said slit over the entire length thereof. cutting said tube in an axial direction to form a plurality of tubular sections.
Claim 4
Dependent Claim
134 words
A process for fabricating a sleeve for an optical fiber connector for mutually detachably connecting optical fibers by gripping plug ferrules formed at respective ends of said optical fibers with an elastic restoring force, said ferrules being in a mutually matched abutting state, comprising the steps of: selecting a resilient metal material; forming said resilient material into a tubular shape, thereby forming a metal tube having an outer diameter and an elongate hole therethrough defining an inner diameter, wherein said hole is formed by a process other than cutting or drilling; forming a longitudinal slit along an entire length of said metal tube so that said tube is approximately C-shaped in cross-section having said slit over the entire length thereof. cutting said tube in an axial direction to form a plurality of tubular sections.
Claim 5
Dependent Claim
33 words
A process for fabricating a sleeve for an optical fiber according to claim 1, wherein said resilient material is selected from one of phosphor bronze, beryllium copper, high carbon steel and stainless steel.
Claim 6
Dependent Claim
33 words
A process for fabricating a sleeve for an optical fiber according to claim 2, wherein said resilient material is selected from one of phosphor bronze, beryllium copper, high carbon steel and stainless steel.
Claim 7
Dependent Claim
15 words
A sleeve for an optical fiber connector made according to the process of claim 1.
Claim 8
Dependent Claim
15 words
A sleeve for an optical fiber connector made according to the process of claim 2.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-03-18 | 1994-09-17 | 1995-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-18 | 1998-09-17 | 1999-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-18 | 2002-09-17 | 2003-03-19 | $7700.00 | Window Closed / Lapsed |