Optical waveguides – With optical coupler – Movable coupler
Patent
1997-02-24
1998-06-09
Ngo, John
Optical waveguides
With optical coupler
Movable coupler
385 25, 385 16, 385 20, 385 15, G02B 626
Patent
active
057648271
ABSTRACT:
A limited rotation connection device includes a housing defining a central ole extending therethrough and a central shaft extending through the central hole of the housing and being rotatably mounted to the housing, the housing also defining an annular slot surrounding and extending in substantially perpendicular relation to the central shaft. The device also includes an elongated flexible communication element disposed in the annular slot of the housing and having a first opposite end portion mounted to the central shaft and a second opposite end portion mounted to the housing. The communication element is collapsible and expandable upon rotation of the central shaft relative to the housing so as to allow limited rotations of the opposite end portions of the communication element relative to one another before reversing rotation direction becomes necessary. The first opposite end portion of the communication element is connectable to a first external communication device. The second opposite end portion of the communication element is held stationary and is connectable to a second external communication device.
REFERENCES:
patent: 4753501 (1988-06-01), Battle
patent: 4875756 (1989-10-01), Estes et al.
patent: 5031994 (1991-07-01), Emmons
patent: 5649036 (1997-07-01), Anderson et al.
patent: 5664034 (1997-09-01), Mock
Gilbert Harvey A.
Ngo John
The United States of America as represented by the Secretary of
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