Chord wheel
United States Patent D535333

Ellis, Margrethe Smit (Oslo, NO)
Application Number:
Publication Date:
Filing Date:
Magiqiat AS (Rorus, NO)
Primary Class:
International Classes:
(IPC1-7): 1907
Field of Search:
84/471R, D17/99, D19/24, D19/59-64, 434/106, 434/402, 434/267, 434/404, 84/474
View Patent Images:
US Patent References:
6358059Method and apparatus for teaching rapid decoding (reading) and encoding (spelling)March, 2002Li434/402
D422635Learning dial for a clockApril, 2000ClarkD19/64
D394878Arithmetic instructional apparatusJune, 1998PerezD19/59
D395675Arithmetic instructional apparatusJune, 1998PerezD19/59
5727949Reference device for prognosing skin lesionsMarch, 1998Bar-Or et al.434/267
D392675Arithmetic instuctional apparatusMarch, 1998PerezD19/59
5709552Music education aidJanuary, 1998LeGrange434/404
5288234Device for composing and decomposing chords and scalesFebruary, 1994Hamzi434/404
D334765Music transposerApril, 1993Dunn et al.D17/99
5173566Apparatus for rapid reference to musical scalesDecember, 1992Hiraoka84/474
D312274CalendarNovember, 1990JohnsonD19/24
4711632Compatibility/incompatibility forecasting deviceDecember, 1987Detrick434/106
3960046Music teaching deviceJune, 1976Choong84/471R
3472117MUSICAL PLAYING AIDOctober, 1969Iverson, Jr. et al84/474

Primary Examiner:
Zarfas, Louis
Assistant Examiner:
Cavanna, Mark
Attorney, Agent or Firm:
Jennings, Strouss & Salmon
Mott, Joseph W.

1. The ornamental design for a chord wheel, as shown and described.


FIG. 1 is a front view of the chord wheel showing my new design.

FIG. 2 is a front view thereof with the inner chord wheel disks shown rotated in an alternative position.

FIG. 3 is a rear view thereof; and,

FIG. 4 is a rear view thereof, with the inner chord wheel disks shown rotated in an alternative position.

The chord wheel is flat and of conventional thickness.