Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 6220920 | Yo-yo with adjustable slot width A yo-yo incorporates a construction that enables the gap between the yo-yo halves to be adjusted simply and quickly. The halves of the yo-yo are threadably mounted on the ends of the yo-yo axle. The yo-yo halves are biased apart axially to maintain firm f... | 04/24/2001 |
| 5184972 | Selective free rotation yo-yo A yo-yo having a pair of rotation bodies spaced from each other by a shaft, with the shaft means having a string connected thereto. Mechanisms are provided between the shaft and the rotation bodies such that: the shaft is fixed with respect to the rotatio... | 02/09/1993 |
| 4601474 | Self-retrieving attack ball A self-defense device comprising a spherical member and a tether cord. The tether cord is wound on a self-winding spool that is rotatably attached to the interior of the spherical member. The free end of the tether cord has a loop formed thereat for secur... | 07/22/1986 |
| 4511342 | Winding and launching device for toy vehicles A winding and launching device for toy vehicles which includes a base covered by a shell, the shell having a shaft projecting therefrom and being adapted to mate with a coupling on a flywheel-driven toy vehicle for rotating the flywheel. The shaft is rota... | 04/16/1985 |
| 4028843 | Child's toy A turtle-shaped frame provided with a recess and a post located within and projecting outwardly from the recess. A plurality of balls are freely disposed within the recess. A hub is rotatably mounted on the frame post and is spaced apart from the recess p... | 06/14/1977 |
| 3945146 | Gyroscopic top A gyrotype toy top embodying a casing housing a rotor on a shaft having a spinning tip thereon, and a biased combined starter element and clutch member for effecting the engagement of the clutch member with the rotor upon the application of a pulling forc... | 03/23/1976 |
