US4145110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical fibre connector for variable signal attenuation
Assignee: Nortel Networks Ltd
•
Filing: 1977-04-08
•
Granted: 1979-03-20
•
Expires: 1997-04-08
Abstract
Abstract An optical fibre connector is disclosed for variable optical signal attenuation. The attenuator comprises a connecting element with a common bore of size to accept with close sliding fit two optical fibres in end to end relationship, and a positioning means for varying the end separation of said optical fibres relative to one another.
Inventors
- 👤 Otto I. Szentesi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:00
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/264; G02B6/266
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
An optical fibre connector for variable optical signal attenuation comprising: a connecting element with a common bore of size to fit two uncoated fibers in end to end relationship; said connecting element including two further bores, one on each end of said common bore, a first bore of a size to accept a first coated fiber with a close sliding fit and means for permanently securing said coated fiber to said connecting element, and a second bore of a size to accept a second coated fiber with a sliding fit to allow axial movement of said second fiber; a moveable member, said second fiber secured therein and said positioning means in engagement with said moveable member; and a positioning means for varying the end separation of said optical fibres related to one another, said positioning means acting between said connecting element and said moveable member; and comprising a captive nut held in a fixed housing and mounted on a threaded portion of said moveable member.
Claim 2
Dependent Claim
165 words
An optical fibre connector for variable optical signal attenuation comprising: a connecting element with a common bore of size to fit two uncoated fibers in end to end relationship; said connecting element including two further bores, one on each end of said common bore, a first bore of a size to accept a first coated fiber with a close sliding fit and means for permanently securing said coated fiber to said connecting element, and a second bore of a size to accept a second coated fiber with a sliding fit to allow axial movement of said second fiber; a moveable member, said second fiber secured therein and said positioning means in engagement with said moveable member; and a positioning means for varying the end separation of said optical fibres related to one another, said positioning means acting between said connecting element and said moveable member; and comprising a captive nut held in a fixed housing and mounted on a threaded portion of said moveable member.
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) | 1982-03-19 | 1982-09-18 | 1983-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-19 | 1986-09-18 | 1987-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-19 | 1990-09-18 | 1991-03-20 | $7700.00 | Window Closed / Lapsed |