AC motor driven treadmill

Details AC motor driven treadmill AC motor driven treadmill

1995-05-01

1997-07-01

Apley, Richard J.

Exercise devices

Involving user translation or physical simulation thereof

Treadmill for foot travel

482 1, 482901, A63B 2100

Patent

active

056431422

ABSTRACT:
An exercise treadmill having a direct drive AC induction motor controlled by an AC motor driver/controller. The driver/controller is itself controlled through programmable circuitry having a display and keyboard with user input options. The controller receives signals from a speed sensing device attached to the AC induction motor to maintain the rotational speed of the AC motor within preselected limits. The AC induction motor is attached to one or more flywheels and directly engages, through a drive roller, a walking belt. The matched combination of an AC motor driver/controller with appropriately sized flywheels allows utilization of a variable speed AC induction motor for the direct drive of the treadmill belt.

REFERENCES:
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patent: 4635927 (1987-01-01), Shu
patent: 4635928 (1987-01-01), Ogden et al.
patent: 4643418 (1987-02-01), Bart
patent: 4944713 (1990-07-01), Salerno
patent: 4998725 (1991-03-01), Watterson et al.
patent: 5141479 (1992-08-01), Vanjani et al.
patent: 5290205 (1994-03-01), Densmore et al.
patent: 5382207 (1995-01-01), Skowronski et al.

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