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MMD > Archives > April 1998 > 1998.04.24 > 09Prev  Next


Inaudible Vacuum Source
By Bob Loesch

>[ I once saw a vacuum pipe system with connections in every room
>[ of a fancy mansion, so that the maid needn't drag around a big
>[ vacuum cleaner.  -- Robbie

One company who used to manufacture those systems was Spencer, who also
built pipe organ blowers and reed organ suction units.

Regards,

Bob Loesch

 [ Matthew Caulfield wrote to me that he installed central vacuum
 [ systems in three house, but he said the noise is quite audible.
 [ I guess it takes special care (as in a theatre organ) to minimize
 [ the noise of the rushing air.  -- Robbie


(Message sent Fri 24 Apr 1998, 16:55:45 GMT, from time zone GMT-0700.)

Key Words in Subject:  Inaudible, Source, Vacuum

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