US20040234225A9 - Ferrule polishing fixture - Google Patents
Ferrule polishing fixture Download PDFInfo
- Publication number
- US20040234225A9 US20040234225A9 US10/777,615 US77761504A US2004234225A9 US 20040234225 A9 US20040234225 A9 US 20040234225A9 US 77761504 A US77761504 A US 77761504A US 2004234225 A9 US2004234225 A9 US 2004234225A9
- Authority
- US
- United States
- Prior art keywords
- nest
- moveable
- nests
- ferrule
- ferrules
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005498 polishing Methods 0.000 title description 15
- 239000000835 fiber Substances 0.000 claims abstract description 19
- 239000013307 optical fiber Substances 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 description 4
- 238000007517 polishing process Methods 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/22—Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground
- B24B19/226—Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground of the ends of optical fibres
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3863—Details of mounting fibres in ferrules; Assembly methods; Manufacture fabricated by using polishing techniques
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3897—Connectors fixed to housings, casing, frames or circuit boards
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
Description
- This application is a continuation of application Ser. No. 10/061,732, filed Feb. 1, 2002; which application is incorporated herein by reference.
- The present invention relates generally to the field of polishing fixtures for holding fiber optic cables during the polishing process.
- Fiber optic connectors generally include a cylindrical ferrule containing an optical fiber. A tip of the fiber is exposed at an end face of the ferrule. To enhance signal quality, it is desirable to polish the end face of ferrule. During the polishing process, the ferrule is commonly held in a fixture, and the end face is pressed against a rotating polishing wheel or disk. An example of a fixture for use in polishing fiber optic connectors is described in co-pending U.S. patent application Ser. No. 09/400,334, filed Sep. 21, 1999, which application is incorporated herein by reference.
- One aspect of the present invention relates to a device for holding fiber optic connectors having ferrules containing optical fibers, the device including a clamp having a nest sized to hold a ferrule. The nest includes a moveable portion moveable between a first position where the nest is sized to receive the ferrule and a second position where the nest is sized to clamp the ferrule. The moveable portion is biased toward the second, clamped position.
- A variety of advantages of the invention will be set forth in part in the description that follows, and in part will be apparent from the description, or may be learned by practicing the invention. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
- The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrates several aspects of the invention and together with the description, serve to explain the principles of the invention. A brief description of the drawings is as follows:
- FIG. 1 is a top plan view of an embodiment of a fixture constructed in accordance with the principles of the present invention, the fixture is shown with nests of the fixture in the biased closed orientation;
- FIG. 2A is a top plan view of the fixture of FIG. 1 in place on an actuating device with the nests in the biased closed orientation;
- FIG. 2B is a top plan view of the fixture of FIG. 1 in place on an actuating device, with the nests in an open orientation;
- FIG. 3 is a cross-sectional view taken along section line3-3 of FIG. 1;
- FIG. 4 is a top plan view of an embodiment of an actuating device constructed in accordance with the principles of the present invention;
- FIG. 5 is a top plan view of an alternative set plate;
- FIG. 6 is a cross-sectional view taken along section line6-6 of FIG. 5; and
- FIG. 7 is a top plan view of an alternative embodiment of an actuating device.
- Reference will now be made in detail to exemplary aspects of the present invention that are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.
- The present invention relates to a system for holding fiber optic connectors to facilitate polishing ferrules of the connectors. One representative embodiment of the invention includes a
fixture 30 having a plurality of clamps for holding ferrules. The clamps are normally closed. The system also includes anactuation device 123 for opening the clamps to allow the ferrules to be inserted into or removed from the clamps. - In use of the system, the
fixture 30 is mounted on theactuation device 123, and theactuation device 123 is used to simultaneously open the clamps. The ferrules of the connectors desired to be polished are then inserted into the clamps. After insertion of the ferrules, theactuation device 123 releases the clamps thereby allowing the clamps to return to their normally closed orientation. In the normally closed orientation, the clamps securely hold the ferrules within the fixture. Thereafter, the fixture can be removed from the actuating device and mounted on a polishing device (e.g., a polishing wheel including a polishing film mounted on a polishing pad, as is conventionally known in the art). After the ferrules have been polished, thefixture 30 is returned to theactuation device 123, and the clamps are opened to allow removal of the polished ferrules. - I. Fixture
- FIGS. 1, 2A and2B show an embodiment of a
fixture 30 constructed in accordance with the principles of the present invention. Thefixture 30 includes aholding plate 32 defining acentral opening 40 and having a plurality ofnests 34. An advantage of thefixture 30 is that it is an integral structure, cut from a single piece of material, and does not involve removable parts. Eachnest 34 defines an opening 36 sized for receiving a ferrule of a fiber optic connector. Theopenings 36 extend completely through theplate 32 between upper and lower surfaces/sides 142 and 144 (shown in FIG. 3) of theholding plate 32. Thenests 34 are circumferentially spaced about areference axis 38 positioned at the center of the holding plate 32 (i.e., thenests 34 are arranged in a circular array). - Each
nest 34 includes amoveable portion 42 moveable between a first, open position where the nest is sized to receive the ferrule (shown in FIG. 2B) and a second, closed position where the nest is sized to clamp the ferrule (shown in FIG. 2A). Themoveable portion 42 is biased towards the second, closed position. Themoveable portion 42 can be in the form of a flexible, cantilevered portion moveable between a rest position in which the nest is clamped, and a flexed position in which the nest is open. - The
nests 34 are opened by applying a displacement force on themoveable portion 42 in the direction indicated by the arrows in FIG. 1. The displacement force can be provided by any actuating device. One embodiment of an actuator is described in detail below. In one embodiment, themoveable portions 42 havefree end portions 54 that extend into thecentral opening 40 for receiving the displacement force. While FIGS. 1, 2A and 2B show twelvenests 34 in afixture 30, thefixture 30 can contain asingle nest 34 or any number ofnests 34. - In the embodiment shown in FIGS. 1, 2A and2B, the
holding plate 32 includes a plurality offixed portions 44 and a plurality ofmoveable portions 42 forming a plurality ofnests 34. Thefixed portions 44 oppose themoveable portions 42. In one embodiment,free end portions 54 of themoveable portions 42 extend beyond thefixed portions 44. First half-portions 60 of thenests 34 are formed by thefixed portions 44 and second half-portions 62 of thenests 34 are formed by themoveable portions 42 of theholding plate 32.Moveable portions 42 are formed by first andsecond slots central opening 40 and extending radially outwardly. Thefirst slot 46 extends through theopening 36 of thenest 34. Thesecond slot 48 is offset from thefirst slot 46 to form the cantileveredmoveable portion 42. The cantileveredmoveable portion 42 joins the fixedportion 44 at aflexing point 45. Themoveable portions 42 are moveable relative to the fixedportions 44. For example, each of themoveable portions 42 is moveable between an at rest position (shown in FIG. 2A) and a circumferentially displaced, or flexed, position (shown in FIG. 2B). - When the
nests 34 are in the at rest, or clamped position, the first and second half-portions (60, 62) of thenest 34 are sufficiently close together to clamp a ferrule. When a displacement force moves themoveable portion 42 away from the fixedportion 44, thesecond slot 48 narrows and thefirst slot 46 widens, thus opening thenest 34. - The
moveable portions 42 are biased toward the at rest positions of FIG. 2A by inherent spring-like characteristics (i.e., elasticity or resiliency) of the material forming themoveable portions 42. In one embodiment, thefixture 30 including themoveable portions 42 are made of stainless steel. Preferably, themoveable portions 42 are displaced circumferentially in a flexing motion. When the displacement force is removed, internal spring-like characteristics bias themoveable portions 42 toward the at rest positions. - By way of non-limiting example, the holding
plate 32 can be made of heat treated steel. Also by way of non-limiting example, theplate 32 can have a thickness of about 0.21 inches, a height of about 4.725 inches and a width of 4.725 inches; the first andsecond slots nest openings 36 can have an open position diameter of about 0.099 inches. - To enhance gripping when the
nests 34 are in the clamped positions, thenests 34 can each include one or more bumps, projections, or irregularities (not shown) that extend radially into theopenings 36. Also, to accommodate various connector configurations,depressions 50 are provided about thenests 34 in theupper side 142 of the holdingplate 32. Thedepressions 50 are sized to receive portions of certain styles of connector housings (e.g., SC type connectors). - II. Actuator
- FIG. 4 shows one embodiment of an
actuator device 123 constructed in accordance with the principles of the present invention. Theactuator device 123 has anintegral set plate 121. Theset plate 121 includes seating surfaces 124, aninset ring 125 with at least onealignment surface 127, and a circular array ofopenings 126. Theinset ring 125 can be a separate piece, or it can be a region ofthe setplate 121. Theset plate 121 also includes a plurality of fixture pins 128 that align withcorresponding alignment apertures 56 in the holdingplate 32. - FIGS. 5 and 6 show an alternative embodiment of a
set plate 121′ with thealignment surface 127′ of theinset ring 125′ divided into regions of differing elevations to provide a variety of offset distances from the seating surfaces 124′ to accommodate various protrusion requirements for different ferrule sizes.Regions 180 of thealignment surface 127′ withoutopenings 126′ accommodate ferrules without fibers. - The
openings nests 34 of the holdingplate 32 when thefixture 30 is mounted over theset plate openings openings 126 can all be the same size as shown in FIG. 4, or a plurality ofdifferent size openings 126′, 170 can be present on asingle inset ring 125′, as shown in FIG. 5. The larger openings can be used for larger ferrules to receive the larger amount of epoxy residue that sometimes surrounds the fiber at the end faces of such ferrules. Aset plate 121′ with aninset ring 125′ containing both different elevation regions and different sizes ofopenings 126′, 170 reduces the number of set plates required to provide different ferrule offset lengths as may be required by different polishing processes. Typically, only surfaces of the same elevation are used to set the elevation of a given batch of ferrules. - The
actuator device 123 includes a disk-shaped rotatable drive 132 that projects upward through acentral opening 134 defined by theset plate 121. Therotatable drive 132 includes a plurality ofposts 52 around the outer circumference. When afixture 30 is placed on theset plate 121, as shown in FIG. 2A, theposts 52 are positioned betweenfree end portions 54 ofmoveable portions 42 ofnests 34. - A
lever arm 140 including an L-shapedhandle 150 is mechanically coupled to therotatable drive 132. By pivoting thelever arm 140 outward and inward, therotatable drive 132 withposts 52 is rotated in clockwise and counterclockwise directions, respectively. In one embodiment, theposts 52 are rotated about 5-15 degrees in each direction. - As show in FIG. 4, the
lever arm 140 is coupled to therotatable drive 132 by a linkage. Thelever arm 140 is linked to the frame of theactuator device 123 at afirst pivot point 154, and to anintermediate link 152 at asecond pivot point 156. Theintermediate link 152 is linked to adrive link 160 at athird pivot point 158. Thedrive link 160 is fixedly connected to therotatable drive 132. - When the
lever arm 140 is pivoted outward, as shown in dotted lines in FIG. 4, the rotation drive 132 andposts 52 are positioned away from themoveable portions 42 of afixture 30 present on theactuator device 123. Pivoting thelever arm 140 inwards, as shown in solid lines in FIG. 4, rotates therotatable drive 132 counterclockwise, forcing theposts 52 against themoveable portions 42, which opens thenests 34. - III. Methods of Use
- In use, the
fixture 30 is positioned over theset plate 121 of theactuator device 123 with thelever arm 140 pivoted outward. The fixture pins 128 of theset plate 121 are aligned with thealignment apertures 56 of thefixture 30. Thenests 34 are in the biased clamped position as shown in FIG. 2A. Thelever arm 140 is pivoted inward causing therotatable drive 132 to rotate. As therotatable drive 132 rotates, torque from therotatable drive 132 is transferred to themoveable portions 42 of thefixture 30 through theposts 52. The torque from therotatable drive 132 causes themoveable portions 42 to move, or flex, from the biased closed position of FIG. 2A to the open position of FIG. 2B. This movement of themoveable portions 42 causes the nests to move to the open positions. The fixture pins 128 prevent the holdingplate 32 from rotating along with themoveable portion 42. - Ferrules of fiber optic connectors are individually inserted downwardly from the
upper side 142 of the holdingplate 32 into theopenings 36 of thenests 34. The ferrules are pushed downwardly through theopenings 36 until end faces of the ferrules protrude beyond thelower side 144 of the holdingplate 32 and are seated upon thealignment surface 127 of theinset ring 125, and the optical fibers and epoxy residue extend intoopenings 126 in theinset ring 125. This ensures that all of the ferrule end faces are aligned along a common plane. - With all the ferrule end faces seated on the
alignment surface 127 of theinset ring 125, thelever arm 140 is pivoted outward causing theposts 52 to move away from themoveable portions 42. This allows themoveable portions 42 return to the rest, biased closed, position of FIG. 2A such that the ferrules are firmly clamped within thenests 34 to inhibit relative movement thereinbetween. - With the ferrules clamped in the
fixture 30, thefixture 30 is removed from theset plate 121 and transferred to a polishing wheel (not shown) where the end faces of the ferrules are polished. The one-piece fixture 30 provides the advantage of having thenests 34 in the clamped position without requiring any external force or added locking mechanisms. With no additional moving parts or locking mechanisms, the one-piece fixture is easy to manipulate and clean. - After polishing, the
fixture 30 is once again placed on theset plate 121, thelever arm 140 is pivoted inward causing theposts 52 to move themoveable portions 42 to the open, flexed position of FIG. 2B, opening thenests 34 so the polished ferrules can be removed from thefixture 30. Thereafter, the process can be repeated on a subsequent batch of fiber optic connectors. - IV. Alternative Actuator
- FIG. 7 shows an alternative embodiment of
actuator device 223. This embodiment includes features for insuring uniform protrusion of ferrules from a polishing fixture. Theactuator device 223 includes aset plate 221, swing clamps 310, arotatable drive 232 and alever arm 240. Theset plate 221 hasseating surfaces 224 and analignment surface 227. A plurality ofspring plungers 320 are embedded in the seating surfaces 224. The set plate also includes a plurality of fixture pins 228 that matchalignment apertures 56 in afixture 30 to prevent rotation of thefixture 30 during the clamping and setting process. - The spring plungers320 are moveable between a first, at rest, position in which they extend above the seating surfaces 224, and a second, retracted, position in which they are substantially flush with the seating surfaces 224. Swing clamps 310 extend above the seating surfaces 224 and include clamp
arms 315. Theclamp arms 315 are rotatable toward theset plate 221 to clamp afixture 30 placed onto theset plate 221. Theclamp arms 315 are also moveable in a downward direction, toward the seating surfaces 224. Theclamp arms 315 may be activated in any mainer, such as pneumatically. - The
alignment surface 227 has a plurality ofopenings 226 positioned to align withnests 34 of a holdingplate 32 when thefixture 30 is mounted over theset plate 221. Theactuator device 223 includes a disk-shaped rotatable drive 232 that projects upward through acentral opening 234 defined by theset plate 221. Therotatable drive 232 includes a plurality ofposts 252 around the outer circumference. - A
lever arm 240 including an L-shapedhandle 250 is mechanically coupled to therotatable drive 232. By pivoting thelever arm 240 outward and inward, therotatable drive 232 withposts 252 is rotated in clockwise and counterclockwise directions, respectively. Thelever arm 240 is coupled to therotatable drive 232 by a linkage. Thelever arm 240 is linked to the frame of theactuator device 223 at afirst pivot point 254, and to anintermediate link 252 at asecond pivot point 256. Theintermediate link 252 is linked to adrive link 260 at athird pivot point 258. Thedrive link 260 is fixedly connected to therotatable drive 232. - In use, an
empty fixture 30 is positioned onset plate 221 withfixture pins 228 aligned with thealignment apertures 56 of thefixture 30. Thefixture 30 rests onspring plungers 320 above seating surfaces 224. Thelever arm 240 is pivoted to rotate therotatable drive 232 andposts 252, causing thenests 34 to move to the open positions. Ferrules of fiber optic connectors are individually inserted into theopenings 36 of thenests 34. The ferrules are pushed downwardly through theopenings 36 until end faces of the ferrules are seated upon thealignment surface 227 and the optical fibers extend intoopenings 226 in theset plate 221. With all the ferrule end faces seated on thealignment surface 227, thelever arm 240 is pivoted outward, causing thenests 34 to close. - Once the ferrules are clamped in the
nests 34, the swing clamps are activated. Theclamp arms 315 rotate over and above thefixture 30, and then descend toward the seating surfaces 224. As theclamp arms 315 exert a downward force, thespring plungers 320 retract and thefixture 30 is made to contact the seating surfaces 224. The combined force of the swing clamps 310 must be sufficient to overcome the combined resistance of thespring plungers 320 and the clamped ferrules. The fixture is pre-staged by inserting and clamping the ferrules while thefixture 30 is above theseating surface 224 on thespring plungers 320. This assures that once the fixture is drawn snugly against theseating surface 224, any ferrules not fully inserted will still end up with identical protrusion dimensions as those fully inserted. - The
fixture 30 is then removed from theset plate 221 and transferred to a polishing wheel (not shown) where the end faces of the ferrules are polished. After polishing, thefixture 30 is once again placed on theset plate 221, thelever arm 240 is pivoted inward, opening thenests 34 so the polished ferrules can be removed from thefixture 30. Thereafter, the process can be repeated on a subsequent batch of fiber optic connectors. - Having described preferred aspects and embodiments of the present invention, modifications and equivalents of the disclosed concepts may readily occur to one skilled in the art. For example, while the nests illustrated herein are configured to hold ferrules in a vertically upright orientation, it will be appreciated that the nests could also be oriented so as to each hold a ferrule at an oblique angle relative to a polishing surface. However, it is intended that such modifications and equivalents be included within the scope of the claims that are appended hereto.
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US10/777,615 US6987921B2 (en) | 2002-02-01 | 2004-02-12 | Ferrule polishing fixture |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US10/061,732 US6718111B1 (en) | 2002-02-01 | 2002-02-01 | Ferrule polishing fixture |
US10/777,615 US6987921B2 (en) | 2002-02-01 | 2004-02-12 | Ferrule polishing fixture |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/061,732 Continuation US6718111B1 (en) | 2002-02-01 | 2002-02-01 | Ferrule polishing fixture |
Publications (3)
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US20040161219A1 US20040161219A1 (en) | 2004-08-19 |
US20040234225A9 true US20040234225A9 (en) | 2004-11-25 |
US6987921B2 US6987921B2 (en) | 2006-01-17 |
Family
ID=32028489
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US10/777,615 Expired - Lifetime US6987921B2 (en) | 2002-02-01 | 2004-02-12 | Ferrule polishing fixture |
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US10/061,732 Expired - Lifetime US6718111B1 (en) | 2002-02-01 | 2002-02-01 | Ferrule polishing fixture |
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US6718111B1 (en) * | 2002-02-01 | 2004-04-06 | Adc Telecommunications, Inc. | Ferrule polishing fixture |
US6918816B2 (en) * | 2003-01-31 | 2005-07-19 | Adc Telecommunications, Inc. | Apparatus and method for polishing a fiber optic connector |
US6808444B1 (en) * | 2003-11-26 | 2004-10-26 | Molax Incorporated | Polishing fixture for fiber optic connectors |
US20050260932A1 (en) * | 2004-05-24 | 2005-11-24 | Sagitta Engineering Solutions Ltd. | Polishing fixture for simultaneous loading of a plurality of optical connectors and fiber stubs and a method of loading |
US7068906B2 (en) * | 2004-06-14 | 2006-06-27 | Adc Telecommunications, Inc. | Fixture for system for processing fiber optic connectors |
US7209629B2 (en) * | 2004-06-14 | 2007-04-24 | Adc Telecommunications, Inc. | System and method for processing fiber optic connectors |
US7352938B2 (en) * | 2004-06-14 | 2008-04-01 | Adc Telecommunications, Inc. | Drive for system for processing fiber optic connectors |
US7808624B2 (en) * | 2006-12-15 | 2010-10-05 | Adc Telecommunications, Inc. | Inspecting end surfaces of fiber optic connectors |
US7738760B2 (en) * | 2007-03-23 | 2010-06-15 | Domaille Engineering, Llc | Optical polishing fixture |
US8708776B1 (en) | 2008-12-04 | 2014-04-29 | Domaille Engineering, Llc | Optical fiber polishing machines, fixtures and methods |
US8824849B2 (en) | 2010-04-16 | 2014-09-02 | Lastar, Inc. | Fiber optic connector processing apparatus |
US8771039B2 (en) | 2011-05-25 | 2014-07-08 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Optical fiber polishing jig for use with optical connectors of differing sizes and types |
US9759872B1 (en) * | 2016-02-19 | 2017-09-12 | Domaille Engineering, Llc | Optical fiber polishing fixture |
CN208231543U (en) * | 2018-02-27 | 2018-12-14 | 康普技术有限责任公司 | Grinding clamp for multi-fiber connector |
MX2021011666A (en) * | 2019-03-29 | 2021-10-22 | Commscope Technologies Llc | Fiber optic connector fabrication carrier. |
US11458588B2 (en) | 2019-07-30 | 2022-10-04 | Domaille Engineering, Llc | Optical fiber polishing fixture |
CN110842756B (en) * | 2019-11-28 | 2020-12-15 | 扬州吉驰信息科技有限公司 | Optical fiber grinding machine for optical fiber processing |
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Also Published As
Publication number | Publication date |
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US6987921B2 (en) | 2006-01-17 |
US20040161219A1 (en) | 2004-08-19 |
US6718111B1 (en) | 2004-04-06 |
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