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.
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| Number | Title | Issue Date |
| 7065917 | Rifle bore periscope A periscope device specifically adapted to fit in the breach of a firearm. Using a housing equipped with at least a pair of mirrors in parallel relation to one another, a user can look down the barrel of his or her firearm. This is especially useful for checking the... | 06/27/2006 |
| 6742299 | Laser device for use in adjusting a firearm's sight A device facilitates adjustment of a sight on each of a variety of firearms having different calibers by providing a visible mark on a target when the device is placed within a chamber of any of the firearms. The device includes a housing, and a laser module energiz... | 06/01/2004 |
| 6701661 | Adjustment device for a firearm system A device for adjusting the relative positions of a first module and a second module on a firearm system includes an intermediate barrel adapted for mounting to the firearm system such that an axis of the intermediate barrel is fixed relative to the first ... | 03/09/2004 |
| 6631580 | Firearm bore sight system A firearm bore sighting system is described in which conventionally shaped cartridge body with a rim at a base end and an open forward end includes a bore formed along a cartridge axis. An optical beam emitting device is received within the bore, with pot... | 10/14/2003 |
| 6568119 | Interchangeable shotgun sight The apparatus is an adjustable front sighting system for a shotgun. Interchangeable rings, each with a sight point mounted at a different height above the rings, are slipped over the discharge end of a tube attached to the muzzle of a shotgun and clamped ... | 05/27/2003 |
| 5864957 | Universal sight tool A universal sight tool for use with pistol slides to remove, install, and adjust the front and/or rear sights which are carried in a dovetail in the slide. The tool is also useful to drill and tap barrels and receivers for sights, beads and scope mounts. ... | 02/02/1999 |
| 5813279 | System for positioning boresight calibration tools A system useful in boresight calibration of a launch cell is provided. The aunch cell has a central longitudinal axis coincident with a central longitudinal axis of a projectile that it would support. The launch cell terminates at either end thereof in a d... | 09/29/1998 |
| 5454168 | Bore sighting system and method A bore sighting apparatus and method includes a light source contained within a housing, which is in the form of a stepped cylindrical insert placed in the firing chamber of the firearm. The housing is in the form of a series of interconnected stepped cyl... | 10/03/1995 |
| 5365669 | Laser boresight for the sighting in of a gun A boresight for determining the accuracy of a gunsight wherein a cartridge-shaped housing is dimensioned to fit within the gun chamber. A laser is contained in the housing. A switch is positioned in the end surface of the boresight housing to be contacted... | 11/22/1994 |
| 5225626 | Azimuth determination method A method for measuring the azimuth angles of grenade launcher tubes quickly nd directly, uses an easily fabricated, portable fixture and a commercially available hand-held electronic compass. There is not need for a precise set-up of complex equipment or m... | 07/06/1993 |
| 4879814 | Method and apparatus for boresight alignment of armored battlefield weapons The disclosure relates to a boresight unit wherein an electro-optic package is disposed in a gun shell casing and loaded into the breach end of the main gun tube of a tank for use in boresighting visible or thermal gunsights. The package includes a laser ... | 11/14/1989 |
| 4773164 | Self-aligning caliber bar A caliber bar for locating the centerline of the bore at the muzzle of a gun including a frame, first and second trunnion housings axially mounted on the frame, each of the trunnion housings pivotally mounting three centering arms circumferentially spaced... | 09/27/1988 |
| 4733490 | Alignment-impact indicator for firearms An indicator for adjusting the elevation of a firearm such as a shotgun, comprising a rubber-like grommet having a lesser diameter portion for insertion in the barrel of the gun at the muzzle, a sight guide for mounting on the grommet and having elevation... | 03/29/1988 |
| 4696596 | Equipment mounting mechanism An interface mechanism for the mounting of one component to another, especially useful where the components have to be boresighted and where the boresighted components have to be removed and replaced without disturbing the accuracy of the boresighting. Lo... | 09/29/1987 |
