US5071218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical connector ferrule
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1991-03-06
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Granted: 1991-12-10
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Expires: 2011-03-06
Abstract
Abstract An optical connector ferrule for positioning and securing an optical fiber such that the optical fiber is joined with a mating optical fiber; the optical fiber connector ferrule being provided with an insert portion having an end face; the insert portion having an outside diameter D and being formed with a bore for positioning the optical fiber; the bore having a diameter d; wherein a slot having a depth c of 0.005 to 0.050 mm and a width b is formed on the end face such that the following equation is satisfied: ##EQU1##
Inventors
- 👤 Hiroaki Nishimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:07
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/36; G02B6/38; G02B6/3807; G02B6/3833; G02B6/3855; G02B6/3857; G02B6/25; G02B6/3834; G02B6/3847; G02B6/3861; G02B6/3851; G02B6/3863
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
93 words
An optical connector ferrule for positioning and securing an optical fiber such that the optical fiber is joined with a mating optical fiber; said optical fiber connector ferrule being provided with an insert portion having an end face; said insert portion having an outside diameter D and being formed with a bore for positioning the optical fiber; said bore having a diameter d; wherein a slot having a depth c of 0.005 to 0.050 mm and a width b is formed on said end face such that the following equation is satisfied: ##EQU4##
Claim 2
Dependent Claim
93 words
An optical connector ferrule for positioning and securing an optical fiber such that the optical fiber is joined with a mating optical fiber; said optical fiber connector ferrule being provided with an insert portion having an end face; said insert portion having an outside diameter D and being formed with a bore for positioning the optical fiber; said bore having a diameter d; wherein a slot having a depth c of 0.005 to 0.050 mm and a width b is formed on said end face such that the following equation is satisfied: ##EQU4##
Claim 3
Dependent Claim
94 words
An optical connector ferrule for positioning and securing an optical fiber such that the optical fiber is joined with a mating optical fiber; said optical fiber connector ferrule being provided with an insert portion having an end face; said insert portion having an outside diameter D and being formed with a bore for positioning the optical fiber; said bore having a diameter d; wherein a circular recess having a depth c of 0.005 to 0.050 mm and a diameter b is formed on said end face such that the following equation is satisfied: ##EQU5##
Claim 4
Dependent Claim
94 words
An optical connector ferrule for positioning and securing an optical fiber such that the optical fiber is joined with a mating optical fiber; said optical fiber connector ferrule being provided with an insert portion having an end face; said insert portion having an outside diameter D and being formed with a bore for positioning the optical fiber; said bore having a diameter d; wherein a circular recess having a depth c of 0.005 to 0.050 mm and a diameter b is formed on said end face such that the following equation is satisfied: ##EQU5##
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-12-09 | 1995-06-10 | 1995-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-09 | 1999-06-10 | 1999-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-09 | 2003-06-10 | 2003-12-10 | $7700.00 | Window Closed / Lapsed |