Title:
弦の鍵盤楽器のキーの影響力を変えるための移動可能なピボット軸受
Document Type and Number:
Japanese Patent JP2012510640
Kind Code:
A
Abstract:
A moveable key lever pivot bearing system for keyboard instruments in which the pivot bearing is provided with a longitudinal slot to enable mounting the bearing over a pivot pin disposed on a balance rail mounted within the case of the instrument. The key lever, pivot pin, and balance rail all remain in fixed relationship to one another resulting in a fulcrum point change when the bearing is longitudinally shifted back and forth with respect to the pianist. Means are provided to fix the bearing at a selected longitudinal position, extension arms for example, which may be manipulated to adjust the position of the bearings.
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| JPH02174027 | KEYBOARD |
Inventors:
Stanwood, David
Application Number:
JP2011538603A
Publication Date:
May 10, 2012
Filing Date:
November 30, 2009
Export Citation:
Assignee:
Stanwood, David
International Classes:
G10C3/12; G10B3/12
Attorney, Agent or Firm:
▲吉▼川 俊雄