Patent US4087157A successfully refreshed from Google Patents.
US4087157A
Expired / Lapsed
US
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Helical spring optical fiber connector and splice
Assignee: International Standard Electric Corp
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Filing: 1976-10-07
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Granted: 1978-05-02
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Expires: 1996-10-07
Abstract
Abstract Optical fibers that have had the plastic coatings stripped from their ends, or ferrule terminated optical fibers or bundles, are connected in aligned butting relationship by close-wound helical strip springs.
Inventors
- 👤 Robert J. Hodges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:52
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/36; G02B6/38; G02B6/3801; G02B6/3803; G02B6/3807; G02B6/3873; G02B6/3806
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
116 words
A connector for butt joining a pair of optical fibers having means adjacent to their ends to be butt joined providing cylindrical reference surfaces of equal diameter, comprising: a helical spring of strip material having an inner diameter less than the diameter of said cylindrical reference surfaces and adapted to receive said fibers in the opposite ends thereof whereby the coils of the spring will resiliently engage around and grip said fibers; said helical spring having first and second axial parts; said first axial part being a right-handed helix and said second axial part being a left-handed helix; and means on said helical spring for expanding said spring to permit said fibers to be inserted therein.
Claim 2
Dependent Claim
116 words
A connector for butt joining a pair of optical fibers having means adjacent to their ends to be butt joined providing cylindrical reference surfaces of equal diameter, comprising: a helical spring of strip material having an inner diameter less than the diameter of said cylindrical reference surfaces and adapted to receive said fibers in the opposite ends thereof whereby the coils of the spring will resiliently engage around and grip said fibers; said helical spring having first and second axial parts; said first axial part being a right-handed helix and said second axial part being a left-handed helix; and means on said helical spring for expanding said spring to permit said fibers to be inserted therein.
Claim 3
Dependent Claim
27 words
A connector as set forth in claim 1 wherein: said means comprises laterally extending tab portions on the coils at the opposite ends of said helical spring.
Claim 4
Dependent Claim
29 words
A connector as set forth in claim 1 wherein: said helical spring has an outwardly extending tang thereon at the junction of said first and second axial parts thereof.
Claim 5
Dependent Claim
110 words
An optical fiber joint comprising: a helical spring of strip material; a pair of optical fibers having means adjacent to their ends to be joined providing cylindrical reference surfaces of equal diameter; said fibers extending into the opposite ends of said helical spring in abutting relationship; said helical spring resiliently gripping said cylindrical reference surfaces to align said optical fibers and resiliently urging said fibers into said abutting relationship; said helical spring having first and second axial parts; said first axial part being a right-handed helix and said second axial part being a left-handed helix; and said fibers abutting adjacent to the junction of said first and second axial parts.
Claim 6
Dependent Claim
110 words
An optical fiber joint comprising: a helical spring of strip material; a pair of optical fibers having means adjacent to their ends to be joined providing cylindrical reference surfaces of equal diameter; said fibers extending into the opposite ends of said helical spring in abutting relationship; said helical spring resiliently gripping said cylindrical reference surfaces to align said optical fibers and resiliently urging said fibers into said abutting relationship; said helical spring having first and second axial parts; said first axial part being a right-handed helix and said second axial part being a left-handed helix; and said fibers abutting adjacent to the junction of said first and second axial parts.
Claim 7
Dependent Claim
31 words
An optical fiber joint as set forth in claim 4 including: means on said helical spring for expanding said spring to permit said fibers to be inserted therein and withdrawn therefrom.
Claim 8
Dependent Claim
29 words
An optical fiber joint as set forth in claim 5 wherein: said means comprises laterally extending tab portions on the coils at the opposite ends of said helical spring.
References Cited (Backward Citations)
US1987316A
Cited
US2521722A
Cited
GB803640A
Cited
US3734594A
Cited
US3861781A
Cited
US3936142A
Cited
US3883681A
Cited
US3982815A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-01 | 1981-10-31 | 1982-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-01 | 1985-10-31 | 1986-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-01 | 1989-10-31 | 1990-05-02 | $7700.00 | Window Closed / Lapsed |