Structure of a hula-hoop

Details Structure of a hula-hoop Structure of a hula-hoop

1998-04-13

1999-12-07

Donnelly, Jerome W.

Exercise devices

User manipulated force resisting apparatus, component...

Utilizing force resistance generated by user only

446236, 601118, 601132, A61H 1500

Patent

active

059974494

ABSTRACT:
A hula-hoop includes a body having a hollow portion at an inner side thereof, and a plurality of rollers equi-distantly spaced apart and pivotally mounted in the hollow portion of the hula-hoop body. The rollers are covered by a soft outer sleeve and each roller projects slightly from the inner side of the hula-hoop body. When the user turns the hula-hoop at the waist portion, the rollers may enhance the turning of the hula-hoop, and may prevent possible injury to the waist portion. The hula-hoop is easy to dismantle and assemble to facilitate carrying. Additionally, the rollers may massage the waist of the user during play.

REFERENCES:
patent: 4052982 (1977-10-01), Ozeryansky
patent: 4191179 (1980-03-01), Mattila
patent: 4380885 (1983-04-01), Komagata
patent: 5492526 (1996-02-01), Chen
patent: 5676638 (1997-10-01), Shefi

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