On 12/13/19 8:42 PM, Chuck Guzis via cctalk wrote:
Believe it or not, the "flippy" was actually patented in 1974.
US3932895A
...and let's not forget the 3" CF2 diskettes--designed to be flippies
right fron the get-go.
BASF certainly marketed 5.25" flippies:
https://cdn.instructables.com/FWP/3D0Z/GXL5XZ3U/FWP3D0ZGXL5XZ3U.LARGE.jpg
I have two Aerocomp flippy drives. They have two index sensors and
two write protect sensors so the disk doesn't need to be punched. They
were in external cases with a system I bought and when I opened them for
inspection before use I noticed the extra wires and sensors.
--
Eric Dittman
