US4753515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for assembling flat type plastic multifiber connectors
Assignee: Hitachi Construction Machinery Co Ltd
•
Filing: 1986-06-02
•
Granted: 1988-06-28
•
Expires: 2006-06-02
Abstract
Abstract A connector means includes a connector housing provided with a plurality of bores which is defined by a pair of plastic bases each having a plurality of hemicycle grooves each of which has an inner diameter 1 to several μm larger than an outer diameter of each of the optical cables to be connected. After the optical fibres are inserted into the respective bores and secured therein, one end surface of the connector housing is polished. A pair of connected housings are retained so that the polished end surfaces abut on each other thereby to attain a connection between a plurality of optical cables.
Inventors
- 👤 Hidemi Sato
- 👤 Aizo Kaneda
- 👤 Hitoshi Yokono
- 👤 Kiichi Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:41
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/36; G02B6/38; G02B6/3801; G02B6/3807; G02B6/3873; G02B6/3885; G02B6/3833; G02B6/3855; G02B6/3861; G02B6/3865; G02B6/3881; G02B6/389; G02B6/3893; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
191 words
A method for assembling flat type plastic connector means for a plurality of optical fibers, the method comprising the steps of: arranging a plurality of columnar metallic masters on a mold, with a diameter of each master being one to several μm larger than an outer diameter of the optical fibers to be connected to each other; holding said columnar metallic masters stationary; injecting a thermo-setting resin into said mold to form plastic base halves, on one surface of which a plurality of hemicycle grooves are provided; pushing said mold out of said plastic base halves with ejector pins; bonding a pair of plastic base halves together into plastic bases so as to define a plurality of through bores therein; bonding said optical fibers in said through bores respectively with a bonding agent so that said optical fibers extend through one end of one of said plastic bores; polishing up the other end of said one of said plastic bases together with the bound optical fibers; and clamping a pair of plastic bases so that a polished end of one plastic base abuts a polished end of the other plastic base.
Claim 2
Independent Claim
191 words
A method for assembling flat type plastic connector means for a plurality of optical fibers, the method comprising the steps of: arranging a plurality of columnar metallic masters on a mold, with a diameter of each master being one to several μm larger than an outer diameter of the optical fibers to be connected to each other; holding said columnar metallic masters stationary; injecting a thermo-setting resin into said mold to form plastic base halves, on one surface of which a plurality of hemicycle grooves are provided; pushing said mold out of said plastic base halves with ejector pins; bonding a pair of plastic base halves together into plastic bases so as to define a plurality of through bores therein; bonding said optical fibers in said through bores respectively with a bonding agent so that said optical fibers extend through one end of one of said plastic bores; polishing up the other end of said one of said plastic bases together with the bound optical fibers; and clamping a pair of plastic bases so that a polished end of one plastic base abuts a polished end of the other plastic base.
Claim 3
Dependent Claim
38 words
A method according to claim 1, wherein said thermo-setting resin is one of an epoxy or a phenolic resin both of which are mixed with at least one of quartz powder, glass fiber, carbon fiber, as a filler.
References Cited (Backward Citations)
US3864018A
Cited
US4029390A
Cited
JPS53119059A
Cited
EP0005792A1
Cited
JPS5545051A
Cited
US4265514A
Cited
US4407766A
Cited
US4475790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-28 | 1991-12-28 | 1992-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-28 | 1995-12-28 | 1996-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-28 | 1999-12-28 | 2000-06-28 | $7700.00 | Window Closed / Lapsed |