In one embodiment of the present disclosure, a ramp and platform interface, includes a platform side defining one or more slots, the upper end of the one or more slots defined by a downwardly and inwardly extending lip; at least one support flange including a body, a lip disposed at the top edge of the body, and a flange section outwardly extending from the body, wherein the at least one support flange is selectively mounted to the platform side via the one or more slots; and a ramp section defining a support surface on a top side thereof and one or more support flange engagement structure on the bottom side thereof, wherein the ramp section is disposed in a supporting relationship with the platform side via cooperation of the flange section and the support flange engagement structure.

A curved pathway including a double helix form with no center support column includes a plurality of segments, wherein each of the segments is formed from a plurality of rods coupled to a plurality of connecting nodes. The plurality of rods are arranged in a skewed tetrahedral geometry, which causes the plurality of stair segments to form a helical structure when the plurality of segments are coupled together. The plurality of rods form a spine on an underside of the plurality of stair segments. A pathway surface is coupled to each of the segments. In alternate embodiments, the curved pathway may be formed from sheet metal creased to form a plurality of linear support locations and connecting nodes.

A device (1) for helping a wheeled vehicle to negotiate an obstacle, characterized in that it comprises a stationary frame (10) and at least one deployable ramp (2), said ramp having a bottom end intended to come into contact with the ground (3) and an opposite top end mechanically connected to at least one ramp lifting lever that lifts the top end of said ramp over an end-of-extraction-travel portion, said lifting lever being in the form of a foot mounted so as to pivot on the ramp between an inactive flapped-down position and an end position in which said foot at least partially supports the weight of the top end of said ramp, said foot having a lifting function over a travel portion adjacent to the end position and being kept in contact with the ground.

The disclosure in some aspects relates to recombinant adeno-associated viruses having distinct tissue targeting capabilities. In some aspects, the disclosure relates to gene transfer methods using the recombinant adeno-associate viruses. In some aspects, the disclosure relates to isolated AAV capsid proteins and isolated nucleic acids encoding the same.

A storage unit which is substantially water proof is provided. The storage unit may comprise a shell having lower edges which mate into a groove formed in a top surface of a base to provide a substantially waterproof barrier therebetween. The junction between the lower edge of the side walls and the first groove may be sealed with a water proof sealant. A front side wall of the shell may have an aperture therethrough to allow users to move items into and out of the storage unit. A door may be attached to the storage unit to prevent water from entering into the storage unit through the aperture. Moreover, a lower edge of the door body may be inserted into a second groove formed in the top surface of the base to prevent water from entering into the storage unit from under the door.

A modular system includes a post and first and second rail segments. Each of the first and second rail segments includes a tube defining a substantially hollow interior with an internal surface and an external surface and a web connected to the internal surfaces of the tube and extending across the hollow interior thereof. The web includes at least one screw boss configured for receipt of a fastener to enable engagement of the rail segment with the post.

A ramp system is disclosed which may include first and second components. The first component may include horizontal and vertical portions, and a hook. The horizontal portion may be supported by a lip of a structure, and may have a width equivalent to a length of the lip. The vertical portion may be coupled with, and hang downward from, the horizontal portion, and may have the same width as the horizontal portion. The hook may be coupled with the vertical portion, and may have the same width as the horizontal portion. The second component may include a protrusion and channel. The protrusion may have a width equal or less than the width of the horizontal portion, and be supported by the hook. The channel may be coupled with the protrusion, and have the same width. The channel may receive a planar component which forms a sloped surface of a ramp.

A modular clamp system includes a first component and a bracket. The first component includes a web defining a body having first and second channels orientated towards one another and defining a first height between exteriors thereof and a second height between interiors thereof. The bracket includes a base having first and second flanges extending from opposite ends thereof, a frame extending from the base, and defines a third height between ends of the first and second flanges greater than the second height and less than the first height. A portion of the bracket is configured for insertion into the first component in a first orientation and is further configured for rotation relative to the first component such that the first and second flanges are respectively received within the first and second channels to engage the bracket relative to the first component.

A ramp system is disclosed which may include first and second components. The first component may include horizontal and vertical portions, and a hook. The horizontal portion may be supported by a lip of a structure, and may have a width equivalent to a length of the lip. The vertical portion may be coupled with, and hang downward from, the horizontal portion, and may have the same width as the horizontal portion. The hook may be coupled with the vertical portion, and may have the same width as the horizontal portion. The second component may include a protrusion and channel. The protrusion may have a width equal or less than the width of the horizontal portion, and be supported by the hook. The channel may be coupled with the protrusion, and have the same width. The channel may receive a planar component which forms a sloped surface of a ramp.

An accessible ramp system that comprises lightweight platforms comprised of plastic and/or recycled plastic. To provide strength and rigidity to the platform, a radially extending configuration of reinforcing stringers are used on the bottom side thereof. Each stringer extends from the center of the platform wherein an optional center support leg can be received. The thickness of each stringer generally orthogonal to the platform's flat surface tapers from the center where it is thickest to the perimeter of the platform where it is the thinnest. The radially extending stringer are joined together by a plurality of generally circumferentially extending cross stringers. The stringer web, inspired by the giant Victoria water lily, acts to substantially stiffen the platform while minimizing weight.