Key structure and keyboard apparatus

Music – Instruments – General features

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C084S423001

Reexamination Certificate

active

10940903

ABSTRACT:
A key structure which is capable of giving a woody appearance to the key, and increasing the freedom of mounting at least one functional part formed as a separate part from the key structure, while maintaining excellent machinability. An upper plate has an increased width part corresponding to an end of a white key toward a player. In the key structure, a wood part is secured to the lower surface of at least the increased width part of the upper plate, and has an increased width part having substantially the same width as the increased width part of the upper plate. The key structure is mountable in a keyboard apparatus, for functioning as a white key pivotally moved by key-depressing operation. A recess is formed in a part of the wood part including the increased width part, which opens downward and has a width (W0) not less than 50% and not more than 80% of the width (B0) of the increased width part of the wood part.

REFERENCES:
patent: 3738216 (1973-06-01), Blessinger
patent: 4476769 (1984-10-01), Kumano
patent: 4512234 (1985-04-01), Kumano
patent: 4840104 (1989-06-01), Ishida et al.
patent: 4892024 (1990-01-01), Watanabe
patent: 5036743 (1991-08-01), Yamaguchi et al.
patent: 5079985 (1992-01-01), Yamaguchi et al.
patent: 5559297 (1996-09-01), Yoshikawa et al.
patent: 5610352 (1997-03-01), Yamaguchi
patent: 5796023 (1998-08-01), Kumano et al.
patent: 6002078 (1999-12-01), Yoshinaga et al.
patent: 6051768 (2000-04-01), Masubuchi
patent: 6133517 (2000-10-01), Masubuchi
patent: 6329585 (2001-12-01), Chono
patent: 6531651 (2003-03-01), Kanemitsu et al.
patent: 2514485 (1996-07-01), None
patent: 2903959 (1999-03-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Key structure and 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 Key structure and keyboard apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Key structure and keyboard apparatus will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3867043

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.