A circumferentially extending structure 30 for containing particles having an axial component of velocity and a radial component of velocity is disclosed. The structure includes an inner casing 48 and an outer casing 50. The outer casing is formed of a plurality of layers of flexible fabric and includes layers having differing masses per unit length in the fabric. The layers of fabric extend about the inner casing. A means for applying a load to the fabric engages the fabric to place the fabric ...

An enclosed structure such as a silo, particularly suitable for containing grain crops, is provided. The structure has a series of vertical posts disposed in a circle. A series of horizontal girts are attached to the inside of the posts. The inside surface defined by the girts is clad with lightweight sheet material. A roof is added and the structure may be sealed.

There is provided a vehicle which includes a frame, a steerable wheel mounted on the frame and at least one further wheel mounted for free rotation on the frame. A flywheel is mounted for rotation adjacent one of the wheels. The vehicle includes means for imparting rotation to the flywheel, and a clutch plate rotatably and coaxially mounted adjacent the same wheel to which the flywheel is adjacent. Speed-reduction means allows rotation of the flywheel to rotate the clutch plate at a faster rate ...

A cylinder structure and method for rapidly evacuating a cylinder without contamination thereof. The structure comprises a hollow cylinder, a piston mounted in the cylinder for axial reciprocation, a hollow piston rod secured to the piston for movement therewith extending out of one end of the cylinder, a seal between the one end of the cylinder and the piston rod, and a radial opening through the hollow piston rod between the piston and seal for evacuating the space between the cylinder, piston...

A low aspect ratio airfoil or aircraft wing structure particularly useful in small personal aircraft and STOL aircraft wherein an improved propulsion system substantially eliminates wing tip vortices during take-off and climb operations. An air intake port on the upper surface of the airfoil adjacent the tip end of the foil supplies air for propulsion and increases the lift-to-drag characteristics of the aircraft.

An internally stabilized earth wall is disclosed along with facing elements suitable for construction of that wall in a wet marine environment. The wall elements include footer panels and wall panels, each of which is provided with a pivotally attached planar array of reinforcing members. The reinforcing members are hingedly mounted so as to be lowered in a vertical plane to a substantially horizontal posture on top of a lift of particulate material. According to the method, the footer panels ar...

A window structure (10) having an exterior side (12) and an interior side (14). The window structure (10) includes a stationary casing (22) closed by a movable sash (26) that is fastened to the stationary casing (22) in hinged relation. The stationary casing (22) has an exterior panel (28) located exterior to the sash (26) and extending over the sash (26) to overlap its periphery. A gasket (30) is fastened to the exterior panel (28) and faces interiorly, generally toward the sash (26). The sash ...

To insulate a window, the bottoms, the ends and a portion of the tops near the ends of a plurality of relatively-thick, relatively-stiff polyurethane strips are cemented to a flexible fabric by an elastomer. The maximum width of the polyurethane strips increases with their position along the fabric as the square root of a function of the stretching ability of the elastomeric cement and the radius from the center of the roller to the strip. That function includes the difference between the square...

A magnet for use in a bearing, such magnet preferably having a cylindrical bore to receive a shaft and ferrofluid between the shaft and the bore walls. The magnet is magnetized with its internal magnetization radially directed relative to the axis of the bore.

A rack structure is disclosed having a clip adapted for connecting a supported member, preferably forming part of a shelf, from an adjacent upright which is of a type having two opposite side walls and a wall extending transversely therebetween and joining the side walls at corners of the upright which contain openings. The clip extends along an inner side of the transverse wall and has opposite end portions projecting into the openings in the corners of the upright, with at least one end of the...