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United States Patent | 3,930,649 |
Yackel, Jr. | January 6, 1976 |
This device consists of a base portion to which is secured upright frame portions having a cord or string secured to the upper extermity the cord having a weighted ball on the opposite end which is to be placed into a center mounted ball support.
Inventors: | Yackel, Jr.; Harold E. (Rochester, NY) |
Appl. No.: | 05/469,508 |
Filed: | May 13, 1974 |
Current U.S. Class: | 273/331 |
Current International Class: | A63B 67/10 (20060101); A63B 071/02 () |
Field of Search: | 273/58C,95A,98,101,97R,15R,12R,95R |
3656747 | April 1972 | Revell |
3770273 | November 1973 | Reiner |
3773330 | November 1973 | Glass |
744,418 | Apr., 1933 | FR | |||
922,362 | Jun., 1947 | FR | |||