 Method and apparatus for filtering signals |
| An object of the present invention is to improve a method of the type initially cited such that a ... |
|
| Capacitive key for keyboard |
| The present invention makes use of a movable capacitor plate having a unique design. The movable ... |
|
| Variable capacitor for use in a keyboard |
| The foregoing and other objects and advantages of the present invention are accomplished in an ... |
|
| Method and apparatus to provide pended transaction on a non-pended system bus |
| In accordance with the present invention a data processing system includes a plurality of nodes ... |
|
| Protective case and keyboard system for a handheld computer |
| Referring now to the drawings, the protective case of the instant invention is illustrated and ... |
|
| Architecture for data processor |
| In carrying out the above and other objects of the invention in one form, there is provided a ... |
|
| Keyboard for an electronic musical instrument employing variable capacitors |
| A principal object of the present invention is to provide a keyboard for an electronic musical ... |
|
| Load control system and method for disconnecting sub-bus from main-bus |
| It is an object of the present invention to provide simple structured load control system and ... |
|
| Entry error elimination for data systems |
| I claim: 1. A keyboard switch assembly of the type comprising a power supply, a polling means, a ... |
|
|
Optical fiber splicing technique
| Details |
Inventors: Miller, Calvin Max;
Assignee: Bell Telephone Laboratories, Incorporated (Murray Hill, NJ)
Primary Examiner: Van Horn; Charles E.
Assistant Examiner: Kittle; John E.
Attorney, Agent or Firm: Graves; Charles E.
Splicing of one or more pairs of mating optical fibers is facilitated by a loose-fitting optical fiber receiving tube having a uniform interior cross section with at least one corner; the corner forms a fiber-aligning groove substantially parallel to the longitudinal axis of the tube. Mating fibers, introduced into opposite ends of the tube, are bent at an angle with respect to the longitudinal axis sufficient to bias the fibers against the tube's interior surfaces. In response to forces generated by the bent fibers, the tube rotates to align itself until the mating fiber ends are lodged against the fiber-aligning groove. This procedure effects transverse alignment of the mating fibers, after which the fibers, still bent, are moved toward each other into abutment. |
|
DETAILED DESCRIPTION Illustrated in FIG.
1 is an optical fiber receiving tube 20, adapted for joining two mating optical fibers 11 and 12.
Tube 20, which is a hollow elongated member, has a uniform interior cross section 21 that is larger than the diameter of fibers 11 and 12 to loosely receive either fiber, 11 or 12, at any point along interior cross section 21, hence permitting easy insertion of the fibers and forming a loose fit.
The interior cross section 21 and tube 20 are preferably selected so that tube 20 is sufficiently small to retain the benefits of a small splice of which tube 20 forms a part, while allowing easy insertion.
For example, where the interior cross section 21 of tube 20 is square-shaped as shown in FIG.
1, the interior side edge 23 is preferably 10 to 70 percent greater in length than the diameter of fibers 11 and 12.
The upper limit is chosen so that the fibers cannot accidentally pass each other in tube 20 during fiber insertion.
In accordance with this invention, interior cross section 21 comprises at least one corner 22, defined by two interior surfaces 26 disposed at an angle, depicted by .
theta.
with respect to each other, to form a fiber-alinging groove 24 in the interior surfaces 26 of tube 20 substantially parallel to the tube's longitudinal axis, which is depicted by line 28.
Corner 22 constitutes a region of torsional equilibrium for tube 20 when interior surfaces 26 are impinged by fibers 11 and 12, inserted into opposite ends 27 and 29 of tube 20, respectively, and bent with respect to axis 28.
Also illustrated in FIG.
1 is the completed joint comprising optical fibers 11 and 12, transversely aligned and a butted in tube 20.
Bent fibers 11 and 12 are positioned in a stable state as their fiber ends, 13 and 14 respectively, are lodged against fiber-aligning groove 24.
Groove 24 preferably has an angle .
theta.
of approximately 90.
degree.
to maintain the tranversely aligned fibers in a stable state.
A greater angled groove would provide less stability in holding fiber ends 13 and 14 in place
|
| Related patents |
|
|
Method for producing orientation layers for liquid crystal displays and liquid crystal displays having orientation layers
OF THE INVENTION The invention is explained in greater detail with reference to the following examples and the FIGURE, in which one embodiment of a liquid crystal ...
|
|
|
Method of transmitting digital streams over higher rate channels and a device for implementing same
For this, the present invention provides a method of the above defined type, wherein: on the emission side, with a clock signal H.sub.i associated with the digital ...
|
|
|
Symmetric mixer for millimeter waves and a receiver using such a mixer
What is claimed is: 1. A symmetric mixer for millimiter waves of the type comprising two modules, each of these modules comprising a conducting support, a semiconductor ...
|
|
|
Method and apparatus for determination of chemical species in perspiration
In one aspect, the present invention comprises a dermal patch to be worn on the skin of a subject mammal for quantitatively determining the presence and amount of an ...
|
|
|
Game apparatus
The present invention comprises, in its simplest form, a mechanism capable of projecting matter toward a plurality of player positions, plus mechanisms for selecting ...
|
|
|
Recreational vehicle power control system
The present invention is directed to a control system for recreational vehicles which to a large extent overcomes these and other problems associated with the use of ...
|
|
|
Wave powered buoy generator
What is claimed is: 1. A buoy generator comprising: a hollow buoy having inner and outer surfaces; at least one winding mounted to the buoy parallel to its surfaces, the ...
|
|
|
DC/DC converter
It is therefore an object of the present invention, considering the problems in the conventional circuit described above, to obtain a high step-up ratio in a DC/DC ...
|
|
|
Low-power integrated circuit with selectable battery modes
What is claimed is: 1. An integrated circuit, comprising: first, second, and third power input terminals; said first input terminal being operatively connected to an ...
|
|
|
Split-path linear isolation circuit apparatus and method
An object of this invention is, therefore, to provide an improved split-path isolation apparatus and method having an accurate and stable response over a wide range ...
|
|
|
I/O Systems 
