U.S. Pat. No. 7,137,464
1/2 Horsepower, 50 amp, high torque motor runs cooler under load.
Industrial grade gear box transmits steady power and is preferable to other drive designs.
Large 2" diameter, polyurethane lifting feet provide more secure stair gripping.
Auto rewind ratchet works first to take the slack out of the cargo belt, and then provides a ratchet crank to securely tighten the load.
Noseplate measures 24" by 4" deep. Welded magnesium frame and noseplate.
Sealed maintenance-free battery. Charger and circuit breaker included.