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| Solderless connectors for semi-rigid coaxial cable |
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| Distribution frame for optical cables |
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| Fiber optic polarization controller |
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| Universal host interface for data acquisition systems |
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Connector for optical fibers and the like
| Details |
Inventors: Modrey, Henry J.;
Assignee:
Primary Examiner: Lee; John D.
Assistant Examiner: Heartney; Phan T.
Attorney, Agent or Firm: Malin, Haley, McHale, DiMaggio & Crosby
A spirally wound resilient cylindrical or tubular connecting element adapted to connect or terminate pressure sensitive or brittle elongated conducting elements in either supporting or end-to-end conductive relationship. In one embodiment, the connecting element is comprised of a generally resilient cylindrical member having a hollow internal passageway therethrough adapted to receive said conducting elements in end-to-end relationship, said cylindrical member having integrally associated therewith a second, smaller, cylindrical member defining a second hollow passageway therethrough, said second hollow passageway adapted to receive an expansion strand or rip wire, said expansion strand having an outside diameter slightly larger than the internal diameter of said second hollow cylindrical passageway, wherein when said expansion strand is disposed within said second hollow cylindrical passageway the internal diameter of said first hollow cylindrical passageway is expanded beyond its equilibrium diameter. When said expansion strand is removed from said second hollow cylindrical passageway, the inherent resiliency of said connecting element urges said connecting element to grip the conducting strand or strands about their outer periphery with a generally equally directed radial force, thereby holding said conductive strands in firm coaxial alignment without disturbing the conductive material of the strand or strands. |
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DETAILED DESCRIPTION The invention comprises a means for coupling two elongated, non-metallic, signal or power transmitting elements in functional engagement As revealed in the prior art, the presently used spirally round springy pins operate on the principle whereby the rolled pin contracts when pressed into a hole of slightly larger diameter than the outside diameter of said pin.
A conductive or other cable member inserted into said pin prior to said pin being pressed into said hole is grasped by a generally uniformly directed radial compressive force between the inner surface of said pin and the outer surface of said conductive member.
In the present invention, however, the connecting means is placed into an expanded state during production and is temporarily held in this expanded configuration resulting in an enlarged internal diameter.
Said internal diameter thereafter receives a pair of end segments, one into each end of said pin, of the cables to be connected in end-to-end engagement.
Once this end-to-end engagement is achieved, the temporary enlarging hold on the pin is released by either vibration, mechanical release or other means to allow the pin connector to return by its inherent spring force toward its original diameter and configuration.
In doing so, it closes over and grips the inserted fiber strands in splicing relationship creating a conductive joint.
In one embodiment of the invention, the connecting means itself is comprised of a spirally round sheet of planar metallic material wherein the outer end of said round pin has disposed therein at about midway along the length thereof an inwardly bent rigid tongue member sized and shaped to be received by a corresponding slot disposed in the next lower layer of said spirally round pin.
The pin itself is manufactured such that in order to insert the tongue into the slot, the pin will have to be slightly unwound out of its relaxed state, thereby increasing the inside diameter of said pin.
The pin will be held statically in that enlarged position until the tongue is removed from the slot, at which time the pin will resume its natural configuration
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I/O Systems 
