Keyboard spring return mechanism
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 21, 1982
Grant Date -
N/A
app pub date -
Mar 24, 1980
filing date -
Mar 24, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A keyboard mechanism for musical instruments which includes a key return spring made from resilient wire bent to form a pair of flexure spring arms connected by a bight. The arms have elbow bends. The ends of the arms have wrist bends, and are trapped in apertures formed in the frame of the instrument. The bight is trapped in one of a plurality of notches on the outer surface of the key. The spring is located close to the fulcrum of the key, in order to reduce the moment arm and spring deflection, both of which contribute to undesirable force build-up.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
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