Title: Keyboard musical instrument having top board coupled with another board through mortise and tenon joint
Application Number: 200410042165 Application Date: 2004.05.08
Publication Number: 1542728 Publication Date: 2004.11.03
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G10C3/00,G10C3/02
Applicant(s) Name: Yamaha Corp. Address:
Inventor(s) Name: Ichikawa Tomonori
Attorney & Agent: ge jing li xiaoshu
Abstract:
     A front board (4), side boards (3) and a rear board define the periphery of a cabinet (20) for a keyboard musical instrument; a top board (6) is connected to the front board (4) through a mortise and tenon joint (21), and is further coupled to rear posts (2B) by means of an angle bar (7) and bolts (5B); the te-non (22) is easily inserted into the mortise (24) so as to make the assembling work easy and speedy.
Time: 7