US4850148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for polishing a fiber
Assignee: Canon Tokki Corp
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Filing: 1988-05-31
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Granted: 1989-07-25
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Expires: 2008-05-31
Abstract
Abstract A method of polishing a fiber, which is particularly difficult to rotate 360 degrees in its polishing operation, comprises the steps of: bringing a thread-like polishing medium into contact with an outer peripheral portion of the fiber; and moving axially and rotatably the thread-like polishing medium relative to the outer peripheral portion of the fiber; whereby the fiber is polished with the thread-like polishing medium.
Inventors
- 👤 Matsuo Takatsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:19
CPC Classifications
B; B24; B24B; B24B19/00; B24B19/22; B24B19/226
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
222 words
An apparatus for polishing a fiber comprising: a hollow rotary shaft disposed in a polishing position of said fiber, said hollow rotary shaft being rotatably driven by a driving unit and provided with: a medium-entrance opening at its one end, through which medium-entrance opening said thread-like polishing medium enters said hollow rotary shaft; and a medium-exit opening at the other end thereof, through which medium-exit opening said thread-like polishing medium is discharged from said hollow rotary shaft; an unwind-bobbin assembly for supplying said thread-like polishing medium to said fiber, said unwind-bobbin assembly being provided with a sufficient amount of said thread-like polishing medium and coaxially and fixedly mounted on said hollow rotary shaft; and a wind-up bobbin for receiving said thread-like polishing medium having been supplied from said unwind-bobbin assembly through said medium-entrance and -exit openings of said hollow rotary shaft, said wind-up bobbin being rotatably driven by said driving unit or by another driving unit so that said thread-like polishing medium having been supplied from said unwind-bobbin assembly is wound on said wind-up bobbin; whereby said fiber having been inserted into said interior of said hollow rotary shaft through said medium-entrance opening or said medium-exit opening of said hollow rotary shaft is polished at its outer peripheral portion with said thread-like polishing medium moved axially and rotatably relative to said fiber.
Claim 2
Independent Claim
222 words
An apparatus for polishing a fiber comprising: a hollow rotary shaft disposed in a polishing position of said fiber, said hollow rotary shaft being rotatably driven by a driving unit and provided with: a medium-entrance opening at its one end, through which medium-entrance opening said thread-like polishing medium enters said hollow rotary shaft; and a medium-exit opening at the other end thereof, through which medium-exit opening said thread-like polishing medium is discharged from said hollow rotary shaft; an unwind-bobbin assembly for supplying said thread-like polishing medium to said fiber, said unwind-bobbin assembly being provided with a sufficient amount of said thread-like polishing medium and coaxially and fixedly mounted on said hollow rotary shaft; and a wind-up bobbin for receiving said thread-like polishing medium having been supplied from said unwind-bobbin assembly through said medium-entrance and -exit openings of said hollow rotary shaft, said wind-up bobbin being rotatably driven by said driving unit or by another driving unit so that said thread-like polishing medium having been supplied from said unwind-bobbin assembly is wound on said wind-up bobbin; whereby said fiber having been inserted into said interior of said hollow rotary shaft through said medium-entrance opening or said medium-exit opening of said hollow rotary shaft is polished at its outer peripheral portion with said thread-like polishing medium moved axially and rotatably relative to said fiber.
Claim 3
Dependent Claim
93 words
The apparatus for polishing the fiber as set forth in claim 1, wherein: a plurality of unwind bobbins on each of which a sufficient amount of said thread-like polishing medium is wound are so provided between a pair of flanges of said unwind-bobbin assembly that they are spaced apart from each other in a circumferential direction of said unwind-bobbin assembly to make it possible to supply a plurality of said thread-like polishing mediums to said fiber being polished; and said plurality of said thread-like polishing mediums are simultaneously wound on said wind-up bobbin.
Claim 4
Dependent Claim
24 words
The apparatus for polishing the fiber as set forth in claim 1, wherein: said hollow rotary shaft. rotatably mounted on said hollow rotary shaft.
Claim 5
Dependent Claim
26 words
The apparatus for polishing the fiber as set forth in claim 3, wherein: a rotation-control mechanism is provided between said wind-up bobbin and its driving unit.
Claim 6
Dependent Claim
74 words
The apparatus for polishing the fiber as set forth in claim 4, wherein: said rotation-control mechanism is rotatably provided in said hollow rotary shaft; and said rotation-control mechanism is constructed of: an input wheel; an output wheel engaged with said input wheel, said output wheel being provided with an output shaft; and a clutch means for coupling or uncoupling said output shaft of said output wheel and an output shaft of said driving unit.
Claim 7
Dependent Claim
73 words
The apparatus for polishing the fiber as set forth in claim 4, wherein: a pressing ring is axially movably mounted on said hollow rotary shaft; a spring means for pressing one side of said pressing ring against said input wheel is provided between the other side of said pressing ring and a flange fixed to said hollow rotary shaft; and a friction disk is provided between said pressing ring and said input wheel.
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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) | 1992-07-24 | 1993-01-23 | 1993-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-24 | 1997-01-23 | 1997-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-24 | 2001-01-23 | 2001-07-25 | $7700.00 | Window Closed / Lapsed |