Music – Instruments – General features
Reexamination Certificate
2011-08-23
2011-08-23
Donels, Jeffrey (Department: 2832)
Music
Instruments
General features
C084S439000
Reexamination Certificate
active
08003871
ABSTRACT:
A keyboard apparatus made longitudinally compact while ensuring a pivotal motion range of hammers within a limited space. Common base ends, to which main bodies of white and black keys are connected via vertically extending hinges, are stacked one upon another and fastened to a fastening part of a frame. Hammers are each supported on a hammer pivot shaft such that its rear end is moved upward about the pivot shaft in a key-depression forward stroke. The hammers have their rear ends located forward of rearmost positions of visible parts of black keys. The hammer pivot shafts are located rearward of frontmost positions of the visible parts. A plate portion of the frame, on which key switches are disposed, is located forward of the rearmost positions of the visible parts of the black keys and upward of the fastening part of the frame.
REFERENCES:
patent: 4993305 (1991-02-01), Franz et al.
patent: 5243125 (1993-09-01), Yamaguchi
patent: 5249497 (1993-10-01), Niitsuma
patent: 5574241 (1996-11-01), Kumano et al.
patent: 5610352 (1997-03-01), Yamaguchi
patent: 5696340 (1997-12-01), Ragni
patent: 5821443 (1998-10-01), Masubushi
patent: 6147290 (2000-11-01), Uno
patent: 7208668 (2007-04-01), Shimoda
patent: 7485798 (2009-02-01), Nishida
patent: 7541532 (2009-06-01), Osuga et al.
patent: 7586030 (2009-09-01), Nishida
patent: 7692089 (2010-04-01), Nishida
patent: 7709718 (2010-05-01), Osuga
patent: 7750222 (2010-07-01), Osuga
patent: 7816598 (2010-10-01), Ishihara et al.
patent: 2004/0261598 (2004-12-01), Uno et al.
patent: 2007/0017338 (2007-01-01), Nishida
patent: 2008/0017016 (2008-01-01), Toyama
patent: 2010/0000394 (2010-01-01), Komatsu
patent: 2010/0071531 (2010-03-01), Kitajima
patent: 2010/0071532 (2010-03-01), Kitajima et al.
patent: 2010/0071534 (2010-03-01), Kitajima et al.
patent: 2011/0005370 (2011-01-01), Kitajima
patent: 1901029 (2007-01-01), None
patent: 1 881 481 (2008-01-01), None
patent: 9269783 (1997-10-01), None
patent: 11175054 (1999-07-01), None
patent: 2008-026403 (2008-02-01), None
patent: 20008-26403 (2008-02-01), None
European Search Report mailed Nov. 11, 2010, for EP Patent Application No. 09170510.3, five pages.
Donels Jeffrey
Horn Robert W
Morrison & Foerster / LLP
Yamaha Corporation
LandOfFree
Keyboard apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Keyboard apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Keyboard apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2654857