Flexible shaft couple for misaligned shafts - sources?

[Robert Myers]

Hi,

I need to find a coupler for two 0.25 inch dia shafts that are slightly
out of alignment.  This is not the straight barrel with two set screws.
It is something with a flexible circular plate that the shafts join to,
and is sort of like a car's differential in looks.  Two separate collars
on either side of this flexible circular disc join to each of the
not-so-well aligned shafts.  This stops them from pressuring each other
during turning.

Does anyone know where I can get these?  Does anyone have on for sale?
Actually, what do you call these things?

Thanks,
-- Rob VE3JQL

P.S. And thanks to all who responded to my request for an SB-401 driver
control tuning capacitor - I have found one.

-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved.  This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind.  Buyer beware!

-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------

Subscription control - http://www.tempe.gov/lists/control.asp?list=HEATH
To post - HEATH at LISTSERV.TEMPE.GOV
Archives - http://listserv.tempe.gov/archives/HEATH.html