Cardiovascular exercise ladder

• US 4,848,737 A
• Filed: 10/01/1987
• Issued: 07/18/1989
• Est. Priority Date: 10/01/1987
• Status: Expired due to Fees

• Current Assignee: Summit Bank (Summit, New Jersey) (Bank of America Corp.)
• Original Assignee: Treco Products Incorporated
• Inventors: Ehrenfield, Ted. R.
• Primary Examiner(s): CROW, STEPHEN R
• Application Number:
  US07/104,282
• Time in Patent Office: 656 Days
• Field of Search: 272/112, 272/69, 272/70, 272/73, 272/129, 272/DIG. 6, 272/93, 272/120, 272/131, 272/132, 272/133, 182/37, 182/43
• US Class Current: 482/52
• CPC Class Codes: A63B 21/0058 using motors
• CPC Class Codes: A63B 21/157 Ratchet-wheel links; Overrunning clutches; One-way clutches
• CPC Class Codes: A63B 22/001 by simultaneously exercising arms and legs, e.g. diagonally in anti-phase A63B22/0076 takes precedence
• CPC Class Codes: A63B 22/0023 the inclination of the main axis of the movement path being adjustable, e.g. the inclination of an endless band
• CPC Class Codes: A63B 22/04 with movable multiple steps , i.e. more than one step per limb, e.g. steps mounted on endless loops, endless ladders steppers with cantilevered support elements pivoting about an axis A63B22/0048
• CPC Class Codes: A63B 2220/34 Angular speed
• CPC Class Codes: A63B 2230/06 heartbeat rate only
• CPC Class Codes: A63B 2230/062 used as a control parameter for the apparatus
• CPC Class Codes: A63B 23/03575 Apparatus used for exercising upper and lower limbs simultaneously
• CPC Class Codes: Y10S 482/90 Ergometer with feedback to load or with feedback comparison
• CPC Class Codes: Y10S 482/901 having computer circuitry
• CPC Class Codes: Y10S 482/903 Utilizing electromagnetic force resistance

Abstract

The invention is a moving ladder exercise device 10 comprising a base 11, moving ladder assembly 12 and retarder assembly 14 using a microprocessor 15 to control retarder speed. The operation of the moving ladder requires the operator to climb the ladder thereby driving the ladder with his body weight. Maximum speed of the ladder assembly 12 cannot exceed the speed of the retarder assembly 14 due to the unidirectional clutch 33 and worm-drive assembly 32. Sensors 17 monitor heart rate of the operator and sensor 16 monitors ladder speed. Sensor output to microprocessor 15 provides feedback which allows the microprocessor to adjust retarder assembly speed so that the desired heart rate is reached and maintained.

Claims

1. A moving cardiovascular exercise ladder capable of distributing workload between upper body and lower body muscle groups and comprising in combination:

a base support platform;

a low-friction, moving ladder assembly having a closed-loop transmission, said assembly mounted on said base support platform, and being freerunning, independent of any frictional, hydraulic, or electrical drag devices, below a selectable limiting speed;

a moving retarder means comprising an electric motor, worm gear drive mechanism, and unidirectional clutch, said retarder means functioning so that said clutch engages and connects the retarder means to the moving ladder assembly thereby limiting the ladder speed to a selected value, said ladder assembly incorporating a pivotal mount attached to said base support platform such that adjustments may be made in the inclination angle of the ladder;

a microprocessor attached to the fixed structure of said moving ladder assembly;

a ladder speed sensor functionally connected to said microprocessor; and

a heart rate sensor for monitoring the heart rate of the operator functionally connected to said microprocessor.