Jump to page content

KBK update for Sunday, 7th March

On the subject of forgotten products, here is another: Hathaway Drireed low-profile reed switches using a rotating magnet assembly. The rotating magnet design was first described by Hathaway in a patent for a tall reed switch filed in 1970, but their low-profile keyboard switch design (with a vertically diagonal reed to reduce height) filed two months later in January 1971. These switches used an interlocking system to avoid the need for a mounting plate, an idea that would become better known with the later Hi-Tek Dovetail Series design.

Also, another Futaba part number is now known: “MD4P-R”: this is for the blade stem version of MD-4. The “C” is now confirmed to mean a cross stem, implying that there is also an MD-4PC. An excerpt of the Futaba diagram along with the switch specifications can be seen in a Eagle Electric Co advertisement.

View within the updates for 2021

Comments

None yet.

Add comment

Name:
E-mail:
Website:
Caption:
Comment:

Plain text only; for hyperlinks use the form “[URL caption]”.

This site is about: