Amusement devices: toys – Rotating or having visible rotating portion – Having attached cord for imparting rotation
Patent
1997-10-15
1999-11-16
Hafer, Robert A.
Amusement devices: toys
Rotating or having visible rotating portion
Having attached cord for imparting rotation
446251, 446255, A63H 130
Patent
active
059847590
ABSTRACT:
Improvements in automatically returning yo-yos in which an effective centripetal/centrifugal movement, vector, signal and/or urge of one or more parts of the yo-yo is translated or allowed to be translated into an effectively reciprocating movement, vector, signal and/or urge, substantially along or parallel to the axis of rotation of the yo-yo, of another part or parts of the yo-yo such that the yo-yo string and/or the lateral face(s) of the string bearing member are seized, tripped, freed, laterally supported and/or centered in response to the speed of rotation of the yo-yo. The yo-yo of the present invention displays characteristics of extended spinning time, improved balance and adaptability for performing tricks while providing an easy to operate yo-yo for beginners including an automatic return facility.
REFERENCES:
patent: 3175326 (1965-03-01), Isaacson
patent: 3256635 (1966-06-01), Radovan
patent: 4130962 (1978-12-01), Ennis
patent: 4207701 (1980-06-01), Kuhn
patent: 4332102 (1982-06-01), Caffrey
patent: 4895547 (1990-01-01), Amaral
Hafer Robert A.
Miller Bena B.
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