Granted Patent B2

US 7,815,549 · App. 11/067,538 · Granted Oct 19, 2010

Abstract

Claims (40)

1. An exercise device having a pair of treadles capable of upward and downward motion, comprising:

a treadle control unit for controlling a resistance to the upward and downward motion of the treadles, each treadle including a frame, a front roller and a rear roller rotatably supported by the frame, and an endless belt disposed about the front and rear rollers and movable relative to the frame, each treadle pivoting at a rear of the frame;

a treadle position sensor for detecting the upward and downward motion of the treadles and providing a signal representative of positions of the treadles;

a tread speed sensor configured to measure a speed of at least one of the endless belts; and

a central processing unit receiving the signal and providing a treadle control signal to the treadle control unit to adjust the resistance of the treadles based at least in part on the received signal and the measured speed of the at least one of the endless belts, wherein the resistance to downward motion of the treadles is increased when the measured speed of the at least one of the endless belts decreases and the resistance to downward motion of the treadles is decreased when the measured speed of the at least one of the endless belts increases.

2. The exercise device of claim 1 ,

wherein the resistance of the treadles is controlled by fluid flow through a valve; and

wherein the treadle control unit regulates the fluid flow through said valve.

3. The exercise device of claim 2 , wherein when the fluid flow through said valve increases, the resistance of the treadles decreases.

4. The exercise device of claim 2 , wherein when the fluid flow through said valve decreases, the resistance of the treadles increases.

5. The exercise device of claim 1 , wherein the treadle control signal is a pulse-width modulated signal.

6. The exercise device of claim 1 , wherein the treadle position sensor includes at least one encoder detecting the upward and downward motion of the treadles.

7. The exercise device of claim 1 , further comprising:

a teeter arm pivotally attached between the treadles;

wherein the at least one encoder has a base and a shaft, the base coupled to a fixed portion of the exercise device and the shaft coupled with the teeter arm.

8. The exercise device of claim 1 , wherein the treadle position sensor includes an optical encoder.

9. The exercise device of claim 1 , further comprising:

a main user interface; and

a remote user interface.

10. An exercise device, comprising:

a frame structure;

a first treadle assembly including a first belt forming a moving surface movably supported by a first treadle frame, the first treadle assembly pivotally supported on the frame structure at a rear of the first treadle frame;

a second treadle assembly including a second belt forming a moving surface movably supported by a second treadle frame, the second treadle assembly pivotally supported on the frame structure at a rear of the second treadle frame;

a treadle position sensor for detecting an upward and downward motion of the first and second treadles and providing a signal representative of positions of the treadles;

a tread speed sensor configured to measure a speed of at least one of the first belt and the second belt; and

a central processing unit receiving the signal and providing a treadle control signal to adjust resistance of the treadles to upward and downward motion based at least in part on the received signal and the measured speed of the at least one of the first belt and the second belt, wherein the resistance to downward motion of the treadles is increased when the measured speed of the at least one of the first belt and the second belt decreases and the resistance to downward motion of the treadles is decreased when the measured speed of the at least one of the first belt and the second belt increases.

11. The exercise device of claim 10 , further comprising:

a first piston-cylinder assembly operably coupled between the frame structure and the first treadle assembly.

12. The exercise device of claim 11 , further comprising:

a second piston-cylinder assembly operably coupled between the frame structure and the second treadle assembly.

13. The exercise device of claim 12 , further comprising:

an adjustable valve assembly hydraulically coupling the first piston-cylinder with the second piston-cylinder assembly.

14. A method for controlling an exercise device having a pair of treadles capable of upward and downward motion, the method comprising:

generating a treadle position signal indicating a position of each of said treadles, each treadle including a frame, a front roller and a rear roller rotatably supported by the frame, and an endless belt disposed about the front and rear rollers and movable relative to the frame, each treadle pivoting at a rear of the frame;

generating a belt speed signal indicating a speed of at least one of the endless belts of the treadles;

generating a treadle control signal based at least in part on the treadle position signal and the belt speed signal; and

adjusting a resistance to downward motion of each of said treadles based in part on the generated treadle control signal, wherein adjusting the resistance to downward motion based on the generated treadle control signal adjusts the resistance so that the resistance to downward motion of the treadles increases when the measured speed of at least one of the endless belts decreases and the resistance to downward motion of the treadles decreases when the measured speed of at least one of the endless belts increases.

15. The method of claim 14 , further comprising:

receiving at least one user input signal; and

adjusting the resistance to downward motion of each of said treadles based in part on the user input signal.

Assignments (22)