Ti Koga-Miyata

[Phil B.]

Hi All -

I was looking at a photo the other day of a Koga Miyata road frame
built with titanium. The method of joining the tubes wasn't exactly
lugs, but rather what looked like alloy (?) sockets. The seat-stays
had been bolted as well at top and bottom.

Is anyone aquainted with these bikes? Can anyone tell me about this
method for joining ti tubes?

TIA
Phil