ferrule


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ferrule

, ferule
1. a metal ring, tube, or cap placed over the end of a stick, handle, or post for added strength or stability or to increase wear
2. a side opening in a pipe that gives access for inspection or cleaning
3. a bush, gland, small length of tube, etc., esp one used for making a joint

Ferrule

A metal cap placed at the end of a post for strength and protection against weathering of the end grain.

ferrule

[′fer·əl]
(design engineering)
A metal ring or cap attached to the end of a tool handle, post, or other device to strengthen and protect it.
A bushing inserted in the end of a boiler flue to spread and tighten it.
(engineering)

ferrule

A metal sleeve, esp. one which is fitted with a screwed plug; serves as an opening on the side of a pipe providing access for inspection or cleaning the interior of the pipe.

ferrule

A ceramic, plastic or stainless steel part of a fiber-optic plug that holds the end of the fiber and precisely aligns it to the socket. The fiber is inserted into the ferrule and cemented with an epoxy or adhesive, which gives it long-term mechanical strength and prevents contamination from the weather. Connectors may also use crimped ferrules that do not require cement. The ferrule is the most important and costly part of a fiber connector. If its length, hole centering and inside and outside diameters are not exact, a poor connection will result. See fiber optics glossary.


Fiber-Optic Ferrule
With the naked eye, one cannot see the tiny opening for the optical fiber. It is only visible under a magnifying glass. The epoxy or adhesive is squeezed into the ferrule before the fiber is inserted (bottom right).
References in periodicals archive ?
Once the epoxy is dry, I grind the inside bottom of the ferrule and the stock back to the drain hole.
If tension wasn't present (the lower band could be wiggled) we would need to correct the stock by bedding it or, alternately, by lowering the stock ferrule slightly.
If not, the sidewall of the female (hollow) ferrule can crack while casting.
According to USP's Frequently Asked Questions for General Chapter <1> Injections, Section on Labeling on Ferrules and Cap Overseals (August 4, 2010): "For those manufacturers who wish to maintain the information printed on the cap or ferrule, rationale must be provided to the FDA explaining why the instruction addressed in the statement in considered to be life threatening.
The elegant pairing of the NoC dip tube and the removable threaded ferrule which is hidden behind a ferrule cover, contributes to the creation of an aesthetically pleasing pack with an environmentally responsible feature.
Critical connectivity issues include the need to prevent loss producing micro-bends at the connector interface where the film leaves the board edge into the modified MT ferrule.
If the ferrule is damaged, the bristles will fall out, which is why patting voids a warranty.
THERE is another chance to see the new stallion from Hong Kong - Ferrule - at Girsonfield Stud, Otterburn at the open day on Sunday.
The recessed MT ferrule in both the connector and receptacle housing ensures it is scoop-proof, preventing damage to the precise MT alignment pins and ferrule endface during connector handling and mating.
The fiber end face and ferrule must be absolutely clean before it is inserted into a transmitter or receiver.
Simply exchange the ferrule and go from a 100-grain head to a 200-grain head or any of the other three-grain sizes.