초록 ▼

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

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.

대표청구항 ▼

[ We claim:] [1.] An exercise treadmill, comprising:a frame structure including two rotatable pulleys, said pulleys being positioned substantially parallel to each other, and a pair of spaced apart longitudinal frame members for providing longitudinal structural support for said frame structure;rota

[ We claim:] [1.] An exercise treadmill, comprising:a frame structure including two rotatable pulleys, said pulleys being positioned substantially parallel to each other, and a pair of spaced apart longitudinal frame members for providing longitudinal structural support for said frame structure;rotational means including a motor for rotating one of said pulleys;an endless, moveable surface being rotated when one of said pulleys is rotated, and providing an exercise surface on which a user can walk or run while exercising;a deck member secured beneath at least a portion of said exercise surface; andspeed control means including a control panel secured to said frame structure and operatively connected to said motor for permitting a user to control the speed of said endless movable surface;an inclination mechanism secured to said frame structure effective to permit selective inclination of said deck member by the user; anda deck support structure including a plurality of laterally spaced resilient support members interposed between said frame structure and said deck member wherein each of said resilient support members are mounted on stationary portions of said frame structure so as to prevent longitudinal movement of said resilient support members and wherein said resilient support members support said deck member on said frame structure so as to permit at least a portion of said deck member to move downwardly with respect to said frame in response to the impact force of the user's feet on said exercise surface thereby resulting in lower impact loads on the user's feet.