| US 7,563,204 B2 | ||
| Method and system for coupling a flywheel assembly onto a shaft of an electric motor using a self-holding taper | ||
| Dewain L. Wasson, Hudson, Wis. (US); and Vincent Hall, Elk Mound, Wis. (US) | ||
| Assigned to McMillan Electric Company, Woodville, Wis. (US) | ||
| Filed on Feb. 02, 2007, as Appl. No. 11/670,477. | ||
| Application 11/670477 is a division of application No. 10/358980, filed on Feb. 04, 2003, granted, now 7,217,226. | ||
| Prior Publication US 2008/0009397 A1, Jan. 10, 2008 | ||
| Int. Cl. A63B 22/02 (2006.01); H02K 9/06 (2006.01) | ||
| U.S. Cl. 482—54 [416/60] | 8 Claims |
| 1. A treadmill, comprising:
a treadmill belt;
a drive roller to drive the treadmill belt;
an electric motor including a shaft rotatably mounted about an axis of the electric motor and extending axially from the electric
motor to transfer torque from the electric motor, at least a portion of the shaft being tapered as the shaft extends from
the electric motor to an outer end of the shaft, the outer end of the shaft being configured to receive a securing member;
a flywheel-pulley assembly defining a bore extending axially through a center of the flywheel-pulley assembly, at least a
portion of the bore being tapered as the bore extends axially from an inner periphery facing the electric motor to the outer
periphery of the flywheel-pulley assembly, wherein the shaft of the electric motor extends through the bore of the flywheel-pulley
assembly such that the taper of the shaft and the bore center the flywheel-pulley assembly on the shaft and create a self-holding
taper arrangement, and wherein the securing member is secured onto the outer end of the shaft; and
a drive belt configured to transfer torque from the flywheel-pulley assembly to the drive roller.
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