Jose Luis Leon

US Patent:

6923746, Aug 2, 2005

Filed:

Dec 6, 1999

Appl. No.:

09/455959

Inventors:

Richard E. Skowronski - Elk Grove Village IL, US
Kenneth F. Lantz - Oak Park IL, US
Jose A. Leon - Chicago IL, US
Donald James Alexander - Milwaukee WI, US
George Kolomayets - Chicago IL, US
Vincent C. Adams - Buffalo Grove IL, US
Eugene B. Szymczak - Glen Ellyn IL, US
Edward W. Minnich - Palatine IL, US
Wade K. Totzke - Algonquin IL, US

Assignee:

Brunswick Corporation - Lake Forest IL

International Classification:

A63B022/00

US Classification:

482 54, 482 51

Abstract:

To improve tracking, an exercise treadmill is provided with a frame including molded plastic pulleys, having an integral gear belt sprocket, an endless belt extending around the pulleys and a motor operatively connected to the rear pulley to drive the belt. The pulleys are molded out of plastic and have a diameter of approximately nine inches. A mold and method for producing large diameter treadmill pulleys having an integrally molded sprocket are also disclosed. A deck underneath the running surface of the belt is supported by resilient members. A positive lateral belt tracking mechanism is used to correct the lateral position of the belt. A belt position sensor mechanism is used in combination with a front pulley pivoting mechanism to maintain the belt in the desired lateral position on the pulleys. The exercise treadmill also includes a lift mechanism with an internally threaded sleeve engaged to vertically aligned nonrotating screws. A user display of foot impact force on the belt is also provided.