초록 ▼

An exercise device provides a programmable resistance over a range of body movements designed specifically for the type of body movement, with provisions for changing the program to other types of body movement and for adjusting the range of resistance for the program type to match variations in str

An exercise device provides a programmable resistance over a range of body movements designed specifically for the type of body movement, with provisions for changing the program to other types of body movement and for adjusting the range of resistance for the program type to match variations in strength for different individuals. Preferably, the resistance is provided by permanent magnet coupling, and the magnetic flux coupling is changed, to correspondingly change the resistance, by moving the permanent magnets relative to magnetic material by means of a cam to establish a fixed program of resistance versus angular movement and further changed by adjusting the relative position between the permanent magnets and the magnetic material to change the range of resistance to the same program. Provision is made to return the coupling to an initial start position at the termination of the movement.

대표청구항 ▼

An exercise machine for exercising a movable body part of a user, wherein a resistance device is connected through a drive to a body-engaging device to be connected to the movable part as it moves through an exercise movement, said exercise machine comprising: said resistance device including a gene

An exercise machine for exercising a movable body part of a user, wherein a resistance device is connected through a drive to a body-engaging device to be connected to the movable part as it moves through an exercise movement, said exercise machine comprising: said resistance device including a generally rotationally fixed support member; a rotatable member mounted to said support member for relative rotation therebetween; magnetic coupling means providing a torque resistant slip coupling between said rotatable member and said support member; means connecting said rotatable member is to said drive; purely mechanical programmable means operatively controlling said magnetic coupling means to establish a fixed program torque to angular rotation curve producing a fixed torque resistance between said rotatable member and said support member for each angular displacement between said rotatable member and said support member over a fixed range; means for selectively changing said fixed program to a different fixed program; separate means adjusting said exercise machine to change all resistance values of said program by the same amount to produce a new range; said magnetic coupling means including permanent magnets having north and south poles secured to one of said members, magnetic material secured to the other of said members, and means establishing flux path between said magnetic material and said north pole and separate flux path between said south pole and said magnetic material during rotation to provide torque; and said magnetic material extending in an annular path having a center of curvature at the axis of rotation of said rotatable member and said north and south poles being spaced from each other.