Music – Instruments – Wind
Reexamination Certificate
2007-01-09
2007-01-09
Donovan, Lincoln (Department: 2837)
Music
Instruments
Wind
C084S395000
Reexamination Certificate
active
10625215
ABSTRACT:
The present invention is for valved musical wind instruments in the musical keys of BB-flat, CC, E-flat, and F with progressive cylindrical mid-section bore or gradual conical mid-section bore expansion or a combination, not to exceed 0.85 inch bore within the first 65% of instrument length and bell throat diameters not to exceed 3 inches measured 10 inches from the bell flare, in which bass trombone tone qualities prevail. Progressive mid-section bore is novel, enhances responsiveness, and enables “early” valve placement options. A 4-valve B-flat bass valve trombone, B-flat cimbasso, or B-flat Tu-Bone is claimed, and may have a single constant cylindrical mid-section bore, or progressive cylindrical mid-section bore or gradual conical mid-section bore expansion or a combination. A valved B-flat bass inverted full double trombone, cimbasso, or Tu-Bone is claimed, as well as a “compensated” version and a full double euphonium. Invention valves may be any piston or rotary valves.
REFERENCES:
patent: 3973464 (1976-08-01), Novy
patent: 4860629 (1989-08-01), Del Giudice
patent: 5435222 (1995-07-01), Leonard
Fry Robert C.
Fuller Craig L.
Sprague, Jr. William H.
Donovan Lincoln
Qin Jianchun
Suiter Swantz pc llo
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