公开(公告)号：US5760321A

公开(公告)日：1998-06-02

申请号：US599047

申请日：1996-02-09

Applicant: Frederick D. Seabert

Inventor： Frederick D. Seabert

IPC: G10D3/14 ,  G01D3/00 ,  G01D3/14

CPC classification number: G10D3/143

Abstract: An automatic guitar string tuning device includes a foot-operated switch for controlling an electrical solenoid which rotates a cam shaft mounted upon a guitar or other stringed instrument. The solenoid rotates the cam shaft between first and second positions under the control of the foot switch. Several of the guitar strings are secured to tensioning arms which engage corresponding camming surfaces formed upon the rotating shaft. Rotation of the cam shaft between the first and second positions causes movement of the tensioning arms and thereby changes the pitch of the strings attached thereto.

Abstract translation: 自动吉他弦调谐装置包括用于控制旋转安装在吉他或其他弦乐器上的凸轮轴的电磁螺线管的脚踏开关。 螺线管在脚踏开关的控制下使凸轮轴在第一和第二位置之间旋转。 几根吉他琴弦被固定到张紧臂上，该张紧臂与形成在旋转轴上的相应的凸轮表面接合。 凸轮轴在第一和第二位置之间的旋转引起张紧臂的移动，从而改变附接到其上的弦的间距。