Title: Buffer for cover on piano keyboard
Application Number: 200410024970 Application Date: 2004.06.05
Publication Number: 1584971 Publication Date: 2005.02.23
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G10C3/00
Applicant(s) Name: Ge Guodong Address: 310012
Inventor(s) Name: Ge Guodong
Attorney & Agent: lian shoujin
Abstract:
     A relaxed falling device for fingerboard cover of piano consist sof contact roller unit and adaptive hydro-cylinder. It is featured as setting contact roller at internal end face of fingerboard cover and forming adaptive hydro-cylinder by tube body, piston, piston rod, regulation rod, reset spring, right and left sealing, force bearing cap and seal ring.
Time: 9