Re: ACME or Ball?

Ballendo:

Your message below begs the question, "just what is the Kerk
technique for anti-backlash?" Does anybody have the patent
number for the Kerk patent? Sometimes the patent drawings
can be most instructive.

Thanks for any information you care to shed on this topic.

-Wayne

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "ballendo" <ballendo@y...> wrote:
> Jan,List,
>
> BS&A used to call those the "active cam" type. Basically the active
> cam is their "work around" of the Kerk patent... (and it's okay, but
> not nearly as good as the kerk, IMO.)
>
> The other thing to be careful of with these nuts is the very
> low load rating in most sizes; far less than what one would
> expect...
>
> Finally, there's no reason why a home hobbyist could not duplicate
> the kerk technique for antibacklash... (Just can't sell it)
>
> Hope this helps,
>
> Ballendo