Piano construction
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 19, 2013
Grant Date -
Jul 12, 2012
app pub date -
Sep 8, 2010
filing date -
Sep 9, 2009
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A piano frame including a main plate having a first major surface for supporting piano strings and an opposite second major surface for supporting a soundboard. First, second, third and fourth elongate anchor zones are located on the first major surface for anchoring, respectively, first end (upper, tuneable end) and second end (lower, hitched end) of bass strings and first end (upper, tuneable end) and second end (lower, hitched end) of treble strings. A plurality of openings are provided in the main plate between the third anchor zone and the fourth anchor zone. A truss defined by a plurality bracing members integrally formed in the main plate extends between the third anchor zone and the fourth anchor zone. The bracing members are located wholly between a plane extending between the third and fourth anchor zones and a plane defined by the second major surface of the main plate.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully