Exercise bicycle

[0001]FIG. 1 is a front, left, and top perspective view of an exercise bicycle embodying a first embodiment of the new design;

[0002]FIG. 2 is a rear, right, and bottom perspective view thereof;

[0003]FIG. 3 is a front elevational view thereof;

[0004]FIG. 4 is a rear elevational view thereof;

[0005]FIG. 5 is a left side view thereof;

[0006]FIG. 6 is a right side view thereof;

[0007]FIG. 7 is a top plan view thereof; and

[0008]FIG. 8 is a bottom plan view thereof.

[0009]FIG. 9 is a front, left, and top perspective view of an exercise bicycle embodying a second embodiment of the new design;

[0010]FIG. 10 is a rear, right, and bottom perspective view thereof;

[0011]FIG. 11 is a front elevational view thereof;

[0012]FIG. 12 is a rear elevational view thereof;

[0013]FIG. 13 is a left side view thereof;

[0014]FIG. 14 is a right side view thereof;

[0015]FIG. 15 is a top plan view thereof; and,

[0016]FIG. 16 is a bottom plan view thereof.

[0017]The broken lines are shown for the purpose of illustrating portions of the exercise bicycle and/or environmental matter and form no part of the claimed design. The dot-dash broken lines define the bounds of the claimed design and form no part thereof.