The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 23, 1990
Filed:
Jan. 27, 1989
Applicant:
Inventor:
Leonard R Amaral, Swansea, MA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A63H / ;
U.S. Cl.
CPC ...
446250 ;
Abstract
A high performance yo-yo displays extended spinning time and is easy to use even by a beginner. The yo-yo includes two yo-yo halves connected by the axle. A spool formed from low friction polymeric material is mounted for free rotation on the axle and the yo-yo string is attached to the spool. When the yo-yo spins, the axle rotates freely within the spool. The axial play of the spool on the axle and the space between the yo-yo halves adjacent the spool are subject to certain critical values which provide the yo-yo with its desirable operating characteristics.