Jump rope device

Details Jump rope device Jump rope device

1998-03-12

1999-10-05

Donnelly, Jerome

Exercise devices

Skipping

482 82, A63B 520

Patent

active

059614250

ABSTRACT:
The jump rope device is constructed with a pair of stations disposed in mirror-image facing relation and a pair of ropes which are connected between rotating arms of each station. Each station employs a stepper motor to rotate the radially disposed arms as well as a transmission for rotating the arms in an out-of-phase relation to create a double dutch effect. The end of each rope is secured to a cord which is wound about a rotatable drum within each radial arm so that the length of exposed rope may be adjusted to a user. Should a user step on a rope, the resulting tension in the rope and cord effects an unwinding of the cord from the drum thereby allowing the rope to break away from the arm of the station.

REFERENCES:
patent: 1893173 (1933-01-01), Kreutzer
patent: 3107092 (1963-10-01), Morris et al.
patent: 3610616 (1971-10-01), Evans
patent: 4082266 (1978-04-01), Elkins
patent: 4529195 (1985-07-01), Stevens
patent: 5620402 (1997-04-01), Simonson

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