US4795231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical fiber connector
Assignee: NEC Corp
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Filing: 1988-01-20
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Granted: 1989-01-03
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Expires: 2008-01-20
Abstract
Abstract An optical fiber coupling device is provided for use in situations where the fibers or fiber cables to be joined have diverse end terminations. Alignment and coupling is provided by a sleeve having a conical frustum surface at one entrance and a split cylindrical sleeve at the other entrance. The end terminations are urged toward each other by a threaded advancement member and a spring, respectively.
Inventors
- 👤 Takashi Tanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:01
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/36; G02B6/38; G02B6/3807; G02B6/381; G02B6/3825; G02B6/3833; G02B6/3847; G02B6/3873; G02B6/3874; G02B6/3877; G02B6/389; G02B6/3894
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
201 words
An optical fiber connector assembly for connecting, within a socket, first and second optical connector plugs terminating first and second optical fiber cables, comprising: said first connector plug including first connector body means having a frustum-shaped mating portion at an end thereof, and securing a first optical fiber along the center axis thereof; said second connector plug including second connector body means having an axially extending cylindrical portion and receiving a second optical fiber along the center axis thereof; sleeve means for aligning said first and second plugs, and sleeve means including a frustum-shaped hollow receiving portion for receiving said first connector body means and for abutting against said frustum portion of said first connector body, and a cylindrical portion for receiving and clamping said second connector body means, the apex of the frustum of said receiving portion being positioned on the center axis of said cylindrical portion; socket means having a bore into which said sleeve means is inserted; first means for urging said first connector body means in a first direction; and second means for urging said second connector body means in an opposite direction with a pressure smaller than the pressure exerted on said first connector body means.
Claim 2
Dependent Claim
201 words
An optical fiber connector assembly for connecting, within a socket, first and second optical connector plugs terminating first and second optical fiber cables, comprising: said first connector plug including first connector body means having a frustum-shaped mating portion at an end thereof, and securing a first optical fiber along the center axis thereof; said second connector plug including second connector body means having an axially extending cylindrical portion and receiving a second optical fiber along the center axis thereof; sleeve means for aligning said first and second plugs, and sleeve means including a frustum-shaped hollow receiving portion for receiving said first connector body means and for abutting against said frustum portion of said first connector body, and a cylindrical portion for receiving and clamping said second connector body means, the apex of the frustum of said receiving portion being positioned on the center axis of said cylindrical portion; socket means having a bore into which said sleeve means is inserted; first means for urging said first connector body means in a first direction; and second means for urging said second connector body means in an opposite direction with a pressure smaller than the pressure exerted on said first connector body means.
Claim 3
Dependent Claim
27 words
A connector assembly as claimed in claim 1, wherein said first and second urging means together urge ends of said first and second optical fibers into abutment.
Claim 4
Dependent Claim
32 words
A connector assembly as claimed in claim 2, wherein said first urging means includes a connector threaded onto said socket means and abutting a rear portion of said first connector body means.
Claim 5
Dependent Claim
33 words
A connector assembly as claimed in claim 3, wherein said second urging means includes at least a spring member having an end in engagement with a portion of said second connector body means.
Claim 6
Dependent Claim
24 words
A connector assembly as claimed in claim 1, further including means connected to said socket means for enclosing said sleeve means within said bore.
Claim 7
Dependent Claim
32 words
A connector assembly as claimed in claim 1, wherein said cylindrical portion of said sleeve means includes at least one slit formed therein to increase the radial flexibility of said sleeve means.
Claim 8
Dependent Claim
49 words
A connector assembly as claimed in claim 6, wherein said at least one slit extends parallel to the axis of said cylindrical portion and has a length greater than the length of said cylindrical portion such that said at least one slit extends partially into said frustum-shaped receiving portion.
Claim 9
Dependent Claim
116 words
An optical fiber connector assembly for connecting first and second diverse optical connector plugs, comprising: a first connector plug including a frustum-shaped mating portion at an end thereof; a second connector plug including an axially extending cylindrical portion; sleeve means for aligning said first and second plugs, said sleeve means including within one entrance end a frustum-shaped receiving portion for receiving and abutting against said first connector plug, and a cylindrical portion for receiving said second connector plug, the apex of the frustum of said receiving portion being positioned on the central axis of said cylindrical portion; and means for urging said first and second connector plugs into abutment with one another within said sleeve means.
Claim 10
Dependent Claim
116 words
An optical fiber connector assembly for connecting first and second diverse optical connector plugs, comprising: a first connector plug including a frustum-shaped mating portion at an end thereof; a second connector plug including an axially extending cylindrical portion; sleeve means for aligning said first and second plugs, said sleeve means including within one entrance end a frustum-shaped receiving portion for receiving and abutting against said first connector plug, and a cylindrical portion for receiving said second connector plug, the apex of the frustum of said receiving portion being positioned on the central axis of said cylindrical portion; and means for urging said first and second connector plugs into abutment with one another within said sleeve means.
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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) | 1992-01-03 | 1992-07-04 | 1993-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-03 | 1996-07-04 | 1997-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-03 | 2000-07-04 | 2001-01-03 | $7700.00 | Window Closed / Lapsed |