...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 7109888 | Method and apparatus for detecting and destroying intruders A method and apparatus employing an array of spaced detectors and a detection circuit to detect disturbance of first and second conductors and provide signals to a computer system to determine both the presence of the intruder and the direction of travel of the intr... | 09/19/2006 |
| 7047887 | Hand grenade An airburst hand grenade constructed so as to jump 1–2 m above the ground before detonating. The hand grenade includes a detonator, a warhead, and support legs for raising the hand grenade from a horizontal position to an upright position once it has landed after ... | 05/23/2006 |
| 7020046 | System and method for target motion analysis with intelligent parameter evaluation plot An underwater target tracking capability is disclosed for a grid-search technique utilizing parameter evaluation plot techniques comprising processing acoustic sonar measurements in conjunction with additional kinematics and environmental information. In the impleme... | 03/28/2006 |
| 6799517 | Mixed mine alternative system The Mixed Mine Alternative (MMA) System is a military system designed for use in mechanized warfare. The MMA System has three components, MMA smart Antitank mines, MMA Antihandling Sensors linked to the MMA smart Antitank mines, and MMA Remote Control Units (RCU). T... | 10/05/2004 |
| 6269726 | Multi-shot, non-lethal, taser cartridge remote firing system for protection of facilities and vehicles against personnel An armored, motorized unit incorporating a gimbaled gun sighted video camera and an attached multi-shot TASER.RTM. cartridge firing system to remotely fire one cartridge at a time at a remotely selected target. A remotely located operator rotates the unit... | 08/07/2001 |
| 5497705 | Zone-defense weapon system and method for controlling same A zone-defense weapon system includes an attack device having at least one main launch tube having a projectile that encloses an explosive charge. At least one device for surveillance and acquisition of targets controls a surveillance zone by detecting an... | 03/12/1996 |
| 5396845 | Modular fuze A fuze or igniter provided with an adjustable electronic unit (24), a separate energy supply (40) as well as a mechanical safety device (26). In order for this fuze to be independent of the weapons system and not be bound to a particular type of payload, ... | 03/14/1995 |
| 5349853 | Apparatus and method for measuring and calculating exterior and interior ballistics An apparatus and method for measuring ballistics in a firearm is disclosed. The apparatus comprises (a) a device for measuring pressure in a firearm-firing-chamber disposed at least in part at the strain sensitive region, and for producing analog signals ... | 09/27/1994 |
| 5279229 | Area defense mine An area defense mine has an orientable launch tube to fire a projectile at any bearing angle. The projectile contains at least one explosive charge, an arrangement for spinning the projectile about an axis of rotation and a device for detecting a target. ... | 01/18/1994 |
| 5261328 | Broad-area defense mine with expanded effective zone In a broad-area defense mine, the inclination under which an active member can rise or can be fired from an ambush position can be varied with the aid of at least one adjusting member between the positioning frame and a mounting or support for the active ... | 11/16/1993 |
| 5243915 | Droppable mine In known droppable mines it customarily becomes necessary, because of the consistency and slope of the ground, to right the mine into a position favorable for its action, with such a position being fixable, if possible, for the entire duration of deployme... | 09/14/1993 |
| 5198614 | Mine with a laying device for a sensor line In a mine capable of righting itself, laying devices for sensor lines are attached on the outside to the topside of a mine housing. During storage and during transport, the laying devices are, in their initial position, in close contact with the topside o... | 03/30/1993 |
| 5142986 | Mine, particularly an anti-tank mine A mine, particularly an anti-tank mine, including a warhead which is arranged in a launching installation, and the latter of which is equipped with an aiming device. The mine is equipped with a range-finding device for the determination of the direction a... | 09/01/1992 |
| 5133260 | Mine equipped with a positioning device An arrangement for positioning a mine includes a mine housing and an inflatable, balloon mounted on a lateral exterior side of the mine housing. A gas generator is disposed in the mine housing and connected to the balloon for providing a supply of gas for... | 07/28/1992 |
| 5069136 | Two-stage release mechanism and method for self-righting a load A two-stage release self-righting mechanism and method employ a pair of primary and secondary releasable holder assemblies which respective hold upper and middle portions of leaf spring arms in a stowed position against the side wall of a load such as a s... | 12/03/1991 |
| 5067096 | Target engagement system for determining proximity to a target A target engagement system uses target motion analysis to determine a target engagement decision for ground targets, such as vehicles. The input to the engagement system is the target azimuth as a function of time. A detect algorithm issues and records a ... | 11/19/1991 |
| 4969398 | Lane marker A lane marker preferably for delivery by a CATFAE weapon, has a mechanical imed device which is positioned and rides in the rear section of the CATFAE weapon as it is launched to a specified position on the ground. At first contact of the CATFAE with the g... | 11/13/1990 |
| 4922824 | Stand device for a mine A stand device or emplacement for a mine, especially for an air-deployable mine which is equipped with a search head, and which includes supporting legs articulated to the housing of the mine. The stand device for the mine has the supporting legs articula... | 05/08/1990 |
| 4696234 | Device for destroying water mines and mine-sweeping method This invention relates to an apparatus for destroying sea mines, especially anchored cable mines, and to an improved mine-sweeping method. The apparatus consists of an active device and upthrust mechanisms which permit the active device to climb up the an... | 09/29/1987 |
| 4640194 | Airborne arrangement for producing a projectile The invention relates to a mine or drop bomb having an effective load, a shaped charge, and an antenna which encompasses a target recognition device. In order to achieve on the one hand a rugged, arrangement which can withstand high acceleration forces, a... | 02/03/1987 |
| 4252062 | Directional effect mine with formed charge A mine of the formed charge type with directional effect and having an overall flat shape so that when in place, it presents an efficient upper surface parallel with the lower surface. An explosive charge is contained in the mine and is limited by a metal... | 02/24/1981 |
| 4058060 | Gravity-deployed munition with a mechanical gravity-controlled switch A land mine adapted to be deployed by gravity and comprising: a housing hng a hollow cylindrical side wall and two end walls, on either of which the mine may come to rest. A main explosive charge in the housing, a clearing charge located between the main... | 11/15/1977 |
| 4040354 | Gravity-deployed double-ended anti-tank mine A double-ended, high-explosive, anti-tank mine, adapted to be carried into he air, in a projectile, for example, ejected, deployed and come to rest on either end, comprises a housing having a short cylindrical side wall and two end walls removably attached... | 08/09/1977 |
| 3956988 | Position-independent mine construction A position-independent dispersable land mine, in particular a hollow charge land mine for combatting wheeled or tracked vehicles, especially those which are armored includes an outer body which may be of a surface of revolution, such as a tube, and which ... | 05/18/1976 |