Operation detection switch, musical instrument and parameter determination program
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 1, 2005
Grant Date -
Aug 28, 2003
app pub date -
Feb 20, 2003
filing date -
Feb 25, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An operation detection switch capable of reproducing the manner of performance in which the speed of depressing an operating portion changes in the middle of a key action and of achieving a reduced manufacturing cost. The operation detection switch includes a switch main body and legs. A fulcrum projection, a first extending portion, protrusion and a second extending portion are provided in sequence along one end to the other end of and extending from the switch main body. Furthermore, a pressure projection is provided on the other end of the switch main body. Movable contacts corresponding to fixed contacts formed on a printed circuit board are formed at the tips of the first and the second extending portions. The operation detection switch and the printed circuit board constitute a detection device for detecting the depressing action of the key.
First Claim
Other Claims data not available
