US4090778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terminating optical fibers and optical fiber connector
Assignee: ITT Inc
•
Filing: 1977-03-11
•
Granted: 1978-05-23
•
Expires: 1997-03-11
Abstract
Abstract An optical fiber connector assembly employs a tubular alignment portion in which two watch jewels, one fitted to each fiber end, are aligned. The jewels are mounted on the ends of ferrules and have diameters greater than that of the ferrules so that alignment of the fibers is made off the jewels rather than the ferrules.
Inventors
- 👤 Michael James Phillips
- 👤 John David Archer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:05
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/36; G02B6/38; G02B6/3807; G02B6/3833; G02B6/3834; G02B6/3835; G02B6/3873
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
72 words
An optical fiber ferrule comprising: a tubular member having a forward end; a pierced watch bearing jewel mounted at the forward end of said tubular member having an aperture therein adapted to receive the end of an optical fiber mounted lengthwise in said member; and said jewel having an outer diameter greater than the cross-section of said tubular member at said forward end for directly using said jewel as alignment reference surfaces.
Claim 2
Dependent Claim
72 words
An optical fiber ferrule comprising: a tubular member having a forward end; a pierced watch bearing jewel mounted at the forward end of said tubular member having an aperture therein adapted to receive the end of an optical fiber mounted lengthwise in said member; and said jewel having an outer diameter greater than the cross-section of said tubular member at said forward end for directly using said jewel as alignment reference surfaces.
Claim 3
Dependent Claim
34 words
An optical fiber termination as set forth in claim 1 wherein: said forward end of said tubular member has an end face; and said jewel has a rear surface mounted against said end face.
Claim 4
Dependent Claim
23 words
An optical fiber termination as set forth in claim 1 wherein: said aperture is coaxial with the center axis of said tubular member.
Claim 5
Dependent Claim
39 words
An optical fiber ferrule as set forth in claim 1 including: a sheathed optical fiber mounted lengthwise in said tubular member and having its sheathing terminating within said member leaving a forward unsheathed end portion threaded into said aperture.
Claim 6
Dependent Claim
112 words
An optical fiber connector comprising: mating first and second connector members each having a pierced watch bearing jewel therein adapted to receive in the aperture therein the end of an optical fiber; each said jewel is mounted on the forward end of a tubuler member and has an outer diameter greater than the cross-section of said tubular member at said forward end; said first connector member having a tubular alignment portion in which said jewels have a close sliding or interference fit; and said jewels being mounted in their respective connector members so that, when said connector members are mated, said jewels are located and held in alignment by said tubular portion.
Claim 7
Dependent Claim
112 words
An optical fiber connector comprising: mating first and second connector members each having a pierced watch bearing jewel therein adapted to receive in the aperture therein the end of an optical fiber; each said jewel is mounted on the forward end of a tubuler member and has an outer diameter greater than the cross-section of said tubular member at said forward end; said first connector member having a tubular alignment portion in which said jewels have a close sliding or interference fit; and said jewels being mounted in their respective connector members so that, when said connector members are mated, said jewels are located and held in alignment by said tubular portion.
Claim 8
Dependent Claim
59 words
An optical fiber connector as set forth in claim 5 wherein: said second connector member has a recess in its forward end slidably receiving said tubular portion of said first connector member; and said jewel in said second connector member is mounted in said recess and positioned to enter into said tubular portion when said connector members are mated.
Claim 9
Dependent Claim
48 words
An optical fiber connector as set forth in claim 6 wherein: the jewel in one of said connector members is fixed against axial movement therein; the jewel in the other connector member is axially slidable therein; and means in said other connector member biases said jewel forwardly therein.
Claim 10
Dependent Claim
25 words
An optical fiber connector as set forth in claim 7 wherein: said slidable jewel is mounted in said tubular portion of said first connector member.
Claim 11
Dependent Claim
44 words
An optical fiber connector as set forth in claim 5 wherein: said tubular portion comprises an elastomeric body having a bore therethrough of triangular cross-section; and said bore being dimensioned so that the walls of said bore have an interference fit with said jewels.
Claim 12
Dependent Claim
39 words
An optical fiber connector as set forth in claim 5 wherein: said tubular portion comprises a resilient sleeve of delta cross-section; and said sleeve being dimensioned so that the walls thereof will deform when said jewels are inserted therein.
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) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |