...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Application No. | Application Title | Issue Date |
| 20110197780 | PROJECTILE HAVING A GUIDE SABOT AND PUSHER PLATE WITH AN ACCELERATION-OPTIMIZED OPENING The invention relates to a subcaliber projectile, particularly for a dart projectile, having a resistance-stabilizing, conically designed guide mechanism having a frustum-shaped recess, wherein a guide cage has a substantially hollow cylindrical design in which a propul... | 08/18/2011 |
| 20100180789 | DISK-SHAPED SABOT A disk-shaped sabot is provided for accelerating a projectile body fired from a smoothbore barrel, the projectile body having the same caliber as the barrel. The sabot is configured so that it is supported only in sections on the rear zone of the projectile body to tran... | 07/22/2010 |
| 20080257192 | High Muzzle Velocity Projectiles and Barrels A projectile firing apparatus having a barrel (40) with a forwardly located exitaperture and an inwardly extending circumferential ledge (50), and two projectiles (41a, b), each having a penetrator (42a, b) and a sabot assembly ... | 10/23/2008 |
| 20080092768 | Special purpose small arms ammunition A multi-piece projectile for a small arms cartridge includes a metal cup that has a bore, a plastic sheath having a through hole and a high-density core. The cup is a cylindrical metal structure having a bore. The sheath is a cylindrical end and a conical end and a thro... | 04/24/2008 |
| 20070272113 | SABOT AND SHOTSHELL COMBINATION A sabot and shotshell combination includes a bullet, a shotshell hull, propellant, a shotshell primer, wadding, and a sabot comprising a molded member having a base portion and a plurality of petal portions each extending from a proximal base root to a distal tip, the b... | 11/29/2007 |
| 20070234925 | Sabot allowing .17-caliber projectile use in a .22-caliber weapon An improved shell, projectile and discarding sabot for converting a .22 caliber weapon for use with a smaller caliber projectile comprising: a rim-fire .22 caliber shell casing holding a quantity of propellant; a discarding sabot inserted into the casing and above the p... | 10/11/2007 |
| 20070144397 | Saboted projectile with external ridges and/or internal locking edge for muzzleloading firearms The present invention is a saboted projectile with external ridges and/or an internal locking edge for muzzleloading firearms. Also, the present invention is a sabot with the ridges and/or locking edge for receiving a muzzleloading projectile. The sabot has a forward pa... | 06/28/2007 |
| 20070119330 | Lead Attached Sabot Slug Disclosed is sabot and a firearm round for a firearm. The sabot includes a compression section defining a payload receiving chamber. The payload chamber receives a slug to form the firearm round. Additionally, the sabot includes a solid section connected to the compress... | 05/31/2007 |
| 20060027132 | Cartridge and a method of preparing at least one radial incision in the body of the bullet of the cartridge The cartridge consists of a shell (13) with powder filling (16) and a bullet (1), where the bullet (1) comprises a body (2) having a rear base (6) and peripheral walls, in the axis of which is fixed a piercing core (3). T... | 02/09/2006 |
| 20060011092 | High velocity ammunition system and firearm A round of high velocity ammunition contained within a modified chamber of a conventional firearm has a cartridge case, a sabot mounted within the forward-end of the case and a carrying projectile matching the caliber of the firearm for engaging rifling in the firearm b... | 01/19/2006 |
| 20050188880 | Sabot for a bullet A plastic, cup-shaped, multi-petal sabot housing a sub-caliber projectile for use such as in shotgun cartridges. The sabot engages the rifling of the shotgun barrel and transfers the spin to the projectile. A reinforcement disk is advantageously at least partially embed... | 09/01/2005 |
| 20050016414 | Ammunition for pistols and carbines The invention relates to improved ammunition for pistols and carbines to provide a cartridge that may be used within the restricted dimensions of these weapons while increasing the effective range normally associated with such ammunition. Additionally, the velocity incr... | 01/27/2005 |