The Steinway Bell Patent

[Delwin D Fandrich]

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  ----- Original Message -----=20
  From: Richard Brekne=20
  To: Pianotech=20
  Sent: September 14, 2002 1:11 AM
  Subject: Re: The Steinway Bell Patent


  To be sure Del, I suppose I should have included that. I just thought =
the patents claim was interesting. It makes perfect sense that it =
functions as a mass coupler as well.=20
  But are you saying then that the plate is not actually stressed =
upwards by the string pressure as the claim makes below ?=20

  RicB=20



I can't see how it would. Considering the stresses involved it might =
well bend it down a bit--most (if not all) plates do to some extent. By =
itself, this presents no problem either structurally or acoustically.=20

One of the functions of the nosebolt--probably their most important =
function--is to couple the plate to some belly structure and prevent it =
(the plate) from vibrating. The bell/bolt arrangement is simply another =
form of nosebolt.

Del



=20


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