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...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7347147 | Braking device for a trajectory-correctable spin-stabilized artillery projectile In order to move a textile braking element (16) which is in the form of an annular disk and which is deployed radially under the effect of centrifugal force rapidly into a contour which is stable in respect of shape and which is always properly defined even u... | 03/25/2008 |
| 6164594 | Device for braking the fall of a load A device for braking the fall of a load, the device having a flexible fabric structure with a central hub connected to at least two radial blades adapted to impart rotary motion to the structure, thereby generating lift, and suspension rigging connecting ... | 12/26/2000 |
| 5947419 | Aerial cargo container An aerial cargo container system for transporting cargo from an aircraft to the ground having a cargo box with a continuous side wall with six rectangular side panels, and rotor blades having stowed positions against alternating box side panels and deploy... | 09/07/1999 |
| 5873549 | Vehicle rotation and control mechanism A nose assembly and method for controlling the rotation and stabilizing the orientation of a vehicle during landing maneuvers. The vehicle includes a nose assembly that is coupled to an airframe thereof and that has a frame and flap assembly. The flap ass... | 02/23/1999 |
| 5413514 | Recoverable aerial toy A recoverable aerial toy having a gyro-rotating recovery system that includes a main body which extends along a longitudinal axis, a rotor hub element mounted on the main body and rotatable relative thereto about the longitudinal axis, and a plurality of ... | 05/09/1995 |
| 5265829 | Tetrahedral lander An apparatus and method is disclosed for decelerating and absorbing impact of a re-entry vehicle suitable for payloads that are relatively light as well as payloads weighing several tons or more. The apparatus includes four inflatable legs displaced equid... | 11/30/1993 |
| 5186418 | Self guided recoverable airborne instrument module The recoverable airborne instrument module is implemented using an aerodynamic housing which has at least one moveable control surface thereon. In operation, the recoverable instrument module is carried aloft by balloon to enable its instrument package pa... | 02/16/1993 |
| 5153371 | Ribbon stabilizer for a weapon A weapon arranged to travel in a given orientation when in flight, has a body and a ribbon. The body has a payload casing and a spindle rotatably mounted at the rear of the payload casing. The ribbon is formed into a flexible loop for trailing behind the ... | 10/06/1992 |
| 4886222 | Atmospheric autorotating imaging device An imaging device that automatically rotates upon descent through an atmosphere provides an onboard image detector a sweeping panoramic scan as it descends. No moving parts or propulsion system are required. The location, angle and pitch of the winged str... | 12/12/1989 |
| 4662589 | Parachute Two ram air sections are included in a parachute canopy. The sections are arranged on opposite sides of a central axis, and face in opposite directions with respect to translational movement but the same direction with respect to rotational movement about... | 05/05/1987 |
| 4360117 | Automatic means for ejecting a payload from its container An assembly of a payload and container is described whereby a payload supt having a base with a perimeter enclosed by a sidewall forming a cup for receiving a tubular container is provided. A first and second tie are connected to one end of the tubular c... | 11/23/1982 |
| 4162053 | Brake device for rotating body A brake device for retarding linear and rotative movement of a load carrying unit after ejection from an in-flight projectile, wherein a container encloses the unit and includes a plurality of slits which divide the container into sections. Each section i... | 07/24/1979 |
| 4017043 | Deployable rotor A deployable stowed rotor having a rotor hub to which a pair of telescoping otor blades are connected is foldable into a package suitable for stowage prior to use. When the rotor is deployed, for example, as a lifting device for an ejection seat, positive ... | 04/12/1977 |
| 3978790 | High altitude sonobuoy A sonobuoy for launching at high altitudes from present sonobuoy launching tubes. A plurality of spring loaded stabilizing fins are held in place adjacent the body of the sonobuoy by rotovanes in their stored position. Upon launching the sonobuoy from an ... | 09/07/1976 |
