Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 4247975 | String attaching to game racket handle A pin is connected between the two legs of the game racket frame in the handle portion near the end. This assembly is placed in a mold with an insert between the legs abutting the pin and initially effectively blocking any string from being looped around ... | 02/03/1981 |
| 4180264 | Racket handle and method of making same A grip is placed inside a mold and the grip and mold are filled with a foam material. The handle pieces of a metal sport racket are placed inside the grip, so that as the foam rises and hardens, the foam becomes a handle around the handle pieces with the ... | 12/25/1979 |
| 4161813 | Method of string attaching to game racket handle A pin is connected between the two legs of the game racket frame in the handle portion near the end. This assembly is placed in a mold with an insert between the legs abutting the pin and initially effectively blocking any string from being looped around ... | 07/24/1979 |
| 3990700 | Adjusting string tension A game racket with adjustable string tension includes a yoke in the throat portion of the racket to which main strings may be secured that engages opposed inside portions of the frame in the throat at upper and lower opposed pairs of points. A tension mem... | 11/09/1976 |
