Did You Know...
...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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| Number | Title | Issue Date |
| 5500060 | Energetic plasticized propellant An energetic composition comprising the following components in the following relative proportions: Component A: from 5% to 25% by weight of a polymeric binder; Component B: from 65% to 90% by weight of a highly energetic filler comprising at least one heteroa... | 03/19/1996 |
| 5360129 | Containers for use on aircraft for the protection of aircraft structures A cargo or luggage container adapted for use on an aircraft which container has strengthened faces made from and/or reinforced by blast resistant material and at least one weakened Face made from a material relatively unresistant to blast, the strengthene... | 11/01/1994 |
| 5210370 | Lightweight weapon stabilizing system A gun system comprising a recoiling cannon assembly, a stationary carriage having a cradle, and a campath and cam follower mechanism for moveably mounting the cannon assembly on the cradle for travel along a two-stage curvilinear recoil path. The first st... | 05/11/1993 |
| 5190248 | Protection of aircraft structures In the event of sudden depressurization caused by an explosion in an aircraft cargo compartment, a blast attenuation valve is provided in the aircraft's air channels to form a barrier to the passage of air between the cargo compartment and passenger cabin... | 03/02/1993 |
| 5038561 | Thermal insulators for rocket motors A thermal insulator for a rocket motor body comprises a member adapted to be fitted as a sleeve on the outer surface of the body the member comprising a composite of cork having on its outer surface a layer of fibre reinforced polymeric material wherein a... | 08/13/1991 |
| 5014624 | Discarding sabots A sabot for use with a spin stabilized projectile comprises a closed front end portion having lines or strips of weakness running along sides of the sabot which meet at a front end surface of the sabot, thereby providing a continuously extending line or r... | 05/14/1991 |
| 4945834 | Explosive projectiles An explosive projectile comprises a casing, having a neck shaped portion adjacent to the opening, a female screw thread being formed in the internal wall of the neck shaped portion, and a region of increased average internal diameter in its inner wall bey... | 08/07/1990 |
| 4901622 | Armour constructions A reactive armour construction comprises a rigidly fixed outer layer and a relatively loosely fixed inner layer mounted on a structure to be protected in such a way that when a projectile penetrates at an oblique angle the outer layer and is incident upon... | 02/20/1990 |
| 4895063 | Composite armor A composite armour comprises a forward metal armour plate, a metal armour backing plate spaced from and generally parallel to the forward armour plate and between the forward armour plate and the armour backing plate an array of armour layers each incline... | 01/23/1990 |
| 4894986 | Bipropellant rocket engines A construction for the delivery of propellant constituents to the main combustion chamber of a hypergolic liquid bipropellant rocket engine having a staged combustion cycle incorporating at least one precombustor comprises: a mixer for mixing together pri... | 01/23/1990 |
| 4882997 | Tubular projectiles A tubular projectile suitable for use in training ammunition comprises a hollow tube having formed in the rear end of the tubular wall thereof a recess in which is embedded a tracer material. The projectile may be sabot launched. Constructions are described fo... | 11/28/1989 |
| 4869152 | Combined active and passive armor system A composite armor system comprises a homogeneous metal armor plate and a plurality of reactive armor panels, each said panel comprising a forward layer, an intermediate layer of explosive material and a rearward layer, the homogeneous armor plate being fo... | 09/26/1989 |
| 4867077 | Reactive armor constructions and explosive packages suitable therefor An explosive package for use in reactive armor comprises an explosive material embedded between layers of a resilient material which are contained between upper and lower rigid plates in a sandwich structure. A construction for the application of reactive... | 09/19/1989 |
| 4848211 | Composite deflecting armour A composite armour comprises an outer layer of metal, an inner layer of metal, and therebetween an intermediate non-metallic layer, wherein there is provided along an edge of the intermediate layer a deflecting strip of metal, said deflecting strip presen... | 07/18/1989 |
| 4760795 | Explosive projectiles An explosive projectile comprises a projectile casing, a high explosive charge filling a portion of the space inside the casing, an impervious case defining a detonation device cavity adjacent to a surface of the explosive charge, and located adjacent to ... | 08/02/1988 |
| 4693181 | Linear cutting charge The application discloses improvements in hollow charges for linear cutting or demolition purposes wherein a bar formed from a composite of explosive material and a first pliant material has a V-shaped groove with a liner formed from a composite of partic... | 09/15/1987 |
| 4649659 | Obturation in a firearm A riot control weapon comprises a barrel, a fixed breech block, and there-between a chamber having a loading aperture through which a cylindrical round of ammunition can be inserted and ejected, the round being insertable by firstly a translational moveme... | 03/17/1987 |
| 4646456 | Firearm with automatic ejection A riot weapon comprises a barrel; a fixed breech block; and therebetween a chamber having a loading aperture through which a round of ammunition can be inserted so as to rest against the breech block, or ejected; a loading catch for retaining a round of a... | 03/03/1987 |
| 4615271 | Shock-augmenting charge with axially-grooved booster housing A cylindrical housing for a shock-augmenting charge is provided with axially extending grooves in its outer wall to enhance its radial detonation capability. When used in a cylindrical warhead for augmenting detonation of a main charge of insensitive high... | 10/07/1986 |
