Patent ID: 7335135

Claim:
A treadmill belt lubricating device for an electric treadmill comprising: a) an axle rod located on a frame of the treadmill; b) a swinging lever pivotally connected to the axle rod and having: i) an inertia weight located on a first end thereof; and ii) a retaining groove having a U-shape and being connected to a second end of the swing lever; c) a wool felt located in the retaining groove; and d) a lubricant is located in the wool felt; wherein the inertia weight is located under a running board of the treadmill, the wool felt selectively engaging the treadmill belt, and, when the running board is vibrated by an external force, an inertia swing of the inertia weight drives the wool felt to engage a bottom surface of the treadmill belt lubricating the treadmill belt.