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US 6,547,653 B2Granted
Ferrule holder assembly for optical-fiber-end-face grinding apparatus
AssigneeSeikoh Giken Co., Ltd.
InventorsKunio Yamada, Takehiko Narita
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AssigneeSeikoh Giken Co., Ltd.
InventorsKunio Yamada, Takehiko Narita
Estimating the term…
A ferrule holder assembly for an optical-fiber-end-face grinding apparatus comprises a ferrule holder board supported to be moved upward and downward in parallel with a grinding board of the optical-fiber-end-face grinding apparatus, a ferrule sleeve provided at the ferrule holder board for receiving and supporting an optical fiber ferrule while putting the tip at the grinding board, an adapter for retaining the optical fiber ferrule or a connector for supporting the optical fiber ferrule in a state where the optical fiber ferrule is inserted into the ferrule sleeve, and an urging unit for urging the adapter in a direction opposite to the grinding board from the ferrule holder board.
A ferrule holder assembly for an optical-fiber-end-face grinding apparatus having a substantially planar grinding board, comprising a ferrule holder board adapted to be mounted substantially parallel to the grinding board, said ferrule holder board having upper and lower surfaces, a plurality of recesses formed in the upper surface of the ferrule holder board, a plurality of adapters each mounted in a respective recess and supporting an optical fiber ferrule, each optical fiber ferrule having an axis and a ferrule tip confronting the grinding board and extending along said axis, the axis of each optical fiber ferrule being fixed relative to the ferrule holder board and the grinding board, the optical fiber ferrule being movable along its axis relative to the ferrule holder board, a pressing plate fastened to the ferrule holder board for retaining each adapter in its respective recess, a pair of coil springs disposed between the pressing plate and each adapter, said springs urging such adapter and the optical fiber ferrule associated therewith in a direction along said axis toward said grinding board.
Dependencies are inferred from the claim text.
From the US filing history. Foreign family members aren’t listed.
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Work supports, e.g. adjustable steadies: radially supporting workpieces
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
Details of mounting fibres in ferrules; Assembly methods; Manufacture: fabricated by using polishing techniques
Characterised by the method of fastening connecting plugs and sockets, e.g. screw- or nut-lock, snap-in, bayonet type: push-pull type, e.g.…
Term ended 27 Dec 2020 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
1. Field of the Invention
The present invention relates to a ferrule holder assembly for an apparatus for grinding end faces of a plurality of ferrules with optical fibers simultaneously.
2. Description of the Related Art
FIG. 1 is a plan view of an embodiment of a ferrule holder assembly for an optical-fiber-end-face grinding apparatus according to an embodiment of the present invention;
FIG. 2 is a front view of the optical-fiber-end-face grinding apparatus on which the ferrule holder assembly shown in FIG. 1 is mounted;
FIG. 3 is an enlarged view showing a state in which an SC-type optical fiber connector is attached to the embodiment of the ferrule holder assembly for the optical-fiber-end-face grinding apparatus shown in FIG. 1;
Embodiments of the ferrule holder assembly for the optical-fiber-end-face grinding apparatus according to the present invention will be described hereinbelow with reference to the drawings. FIG. 1 is a plan view of an embodiment of the ferrule holder assembly for the optical-fiber-end-face grinding apparatus according to the present invention. Adapters 2 for supporting 20 units of connector ferrules, the number of which corresponds to the number of the connector ferrules, are arranged round a concentric circle on a ferrule holder board 1 having a generally square shape, in which a circular hole is provided at the center. This ferrule holder assembly for the optical-fiber-end-face grinding apparatus is mounted on the optical-fiber-end-face grinding apparatus as shown in FIG. 2. A grinding apparatus main body 12 is provided with a grinding board 13 revolving on its axis and the orbit, on which a grinding film 14 is mounted.
Holder retaining stands 15 are provided at the upper four corners of the grinding apparatus main body 12, into which a holder retaining shaft 17 urged downwardly is respectively inserted in the center thereof.
When the ferrule holder board 1 is mounted, levers of the holder retaining shafts are each rotated so as to apply a strong force.