US4422716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical fiber connector
Assignee: NEC Corp
•
Filing: 1980-10-31
•
Granted: 1983-12-27
•
Expires: 2000-10-31
Abstract
Abstract An optical fiber connector includes a cable with an optical fiber and a tube for containing the fiber. The fiber is able to move freely and axially within the tube, and is secured by a device having an internal diameter substantially the same as that of the optical fiber. This securing prevents the axial movement of the fiber held inside the tube. The securing device also has a cylindrical bore for receiving the cable fixed to the securing means.
Inventors
- 👤 Yoshitaka Morimoto
- 👤 Tomiji Shiga
- 👤 Akio Ushirogawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:19
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/36; G02B6/38; G02B6/3807; G02B6/3833; G02B6/3854; G02B6/381; G02B6/3818; G02B6/3821; G02B6/3825; G02B6/3834; G02B6/3835; G02B6/3873; G02B6/3874; G02B6/3887; G02B6/3889; G02B6/389; G02B6/3894; G02B6/3855; G02B6/3861
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
184 words
An optical fiber cable termination assembly for an optical fiber cable comprising: an optical fiber cable including at least one optical fiber for transmitting a light beam and a protective tubular member for protecting said optical fiber while enabling said optical fiber to move freely and axially therein, a forward part of said optical fiber protruding from the end of said protective tubular member: a sleeve member abutting against the end of said protective tubular member for fixing a portion of said forward part of said optical fiber therein so that said forward part of said optical fiber does not move into or out of said protective tubular member, an inner diameter of said sleeve member being dimensioned to be substantially equal to the corresponding dimension of said optical fiber; a glass tube for tightly retaining the remainder of said forward end of said optical fiber; and termination means having a first bore for receiving said glass tube, a second bore for receiving said sleeve member and a third bore for receiving a protective jacket for said optical fiber including said protective tubular member.
Claim 2
Dependent Claim
184 words
An optical fiber cable termination assembly for an optical fiber cable comprising: an optical fiber cable including at least one optical fiber for transmitting a light beam and a protective tubular member for protecting said optical fiber while enabling said optical fiber to move freely and axially therein, a forward part of said optical fiber protruding from the end of said protective tubular member: a sleeve member abutting against the end of said protective tubular member for fixing a portion of said forward part of said optical fiber therein so that said forward part of said optical fiber does not move into or out of said protective tubular member, an inner diameter of said sleeve member being dimensioned to be substantially equal to the corresponding dimension of said optical fiber; a glass tube for tightly retaining the remainder of said forward end of said optical fiber; and termination means having a first bore for receiving said glass tube, a second bore for receiving said sleeve member and a third bore for receiving a protective jacket for said optical fiber including said protective tubular member.
Claim 3
Dependent Claim
29 words
The optical fiber cable termination assembly of claim 1, wherein the front end faces of said termination means, said glass tube and said optical fiber have a coplanar surface.
Claim 4
Dependent Claim
22 words
The optical fiber cable termination assembly of claim 2, further comprising a tapered portion connecting said second bore to said third bore.
Claim 5
Dependent Claim
34 words
The optical fiber cable termination assembly of claim 3, wherein the end of said protective jacket has (is stripped in) a stepwise end (manner) to provide a large contact area with said tapered portion.
Claim 6
Dependent Claim
24 words
The optical fiber cable termination assembly of claim 4, wherein (a) the stepwise end of said protective jacket is bonded to said tapered portion.
Claim 7
Dependent Claim
51 words
The optical fiber cable termination assembly of claim 4, further comprising absorbing means formed coaxially around said termination means for absorbing the external force exerted by the bending of said optical fiber cable, and means connected to said absorbing means for coupling said connector to another connector having the same structure.
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) | 1986-12-26 | 1987-06-27 | 1987-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-26 | 1991-06-27 | 1991-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-26 | 1995-06-27 | 1995-12-27 | $7700.00 | Window Closed / Lapsed |