Abstract: An apparatus and method are disclosed for removing support material or resin from additively manufactured parts. The apparatus includes a processing pump at least a portion of which is located in or adjacent to a processing tank filled with a liquid formulation suitable for removal of support material or resin from additively manufactured parts. The processing pump is adapted to create a vortex within the liquid formulation in the processing tank.

Abstract: The present disclosure is directed to climbing units that provide an enhanced play experience through the incorporation of any of a variety of elements including nets, suspended portions, and coupling elements, and to playground structures that contain those climbing units. In some embodiments, the climber unit may comprise one or more rigid portions and one or more net-containing portions connected end-to-end to produce a continuous climbing pathway. In other embodiments, the climber unit may comprise one or more rigid portions and one or more suspended portions connected end-to-end to produce a continuous climbing pathway. The suspended portion may be attached to adjacent rigid portions by flexible couplers, such that the suspended portion will move when a child climbs through it. In other embodiments, the climber unit may be mounted to an elevated playground structure such that there are no footers connecting the climber unit to the ground.

Abstract: The present invention relates to an easily assembled and disassembled shade-providing structure, such as may be mounted to a playground assembly. The shade-providing structure comprises an outer frame defining an interior space and a canopy that may be positioned in that interior space. The canopy has one or more rods around its periphery, such as may be inserted through one or more pockets in the canopy fabric. Each of the outer frame and the rod(s) has a set of apertures configured to receive a locking fastener and a set of apertures configured to receive a jack screw or similar tensioning device. Accordingly, to assembly the structure, one or more jack screws can be used to provide the canopy with a desired tension and then locking fasteners can be used to secure the canopy to the outer frame.

Abstract: Climbing units that provide an enhanced play experience through the incorporation of any of a variety of elements including nets, suspended portions, and coupling elements, and to playground structures that contain those climbing units. In some embodiments, the climber unit may comprise one or more rigid portions and one or more net-containing portions connected end-to-end to produce a continuous climbing pathway. In other embodiments, the climber unit may comprise one or more rigid portions and one or more suspended portions connected end-to-end to produce a continuous climbing pathway. The suspended portion may be attached to adjacent rigid portions by flexible couplers, such that the suspended portion will move when a child climbs through it. In other embodiments, the climber unit may be mounted to an elevated playground structure such that there are no footers connecting the climber unit to the ground.

Abstract: A set of modular classroom desks configured for outdoor use is presently described. Each classroom desk includes a bench seat; a table unit having a top surface; and first and second legs, each of which is coupled to both the bench seat and the table unit. The classroom desks of the set are configured to be releasably attached together in either a side-by-side orientation or a face-to-face orientation. In the side-by-side orientation, the top surfaces of the classroom desks form a planar tabletop surface, and the bench seats of the classroom desks form a planar seating surface. In the face-to-face orientation, the top surfaces of the classroom desks form a planar tabletop surface. In this manner, a number of classroom desks may be attached together, for instance to form a picnic table.

Abstract: The present invention relates to a rotating play device, such as may be mounted to a play surface of an outdoor playground. The rotating play device includes a central post and an upper framework, e.g. upper ring, rotatably mounted to the central post. The device further includes a lower ring suspended from the upper framework by a plurality of cords. During rotation about the central post, the device is configured such that one or more children may (i) stand on the lower ring and hold the upper ring, (ii) sit on the lower ring and hold one or more of the plurality of cords, or (iii) both (i) and (ii). In some embodiments, at least one of the lower ring and the upper ring may be angled to provide a varying distance between the two rings and/or the cords may be flexible such that a user may modify the distance between the lower ring and upper framework at a given riding location.

Abstract: The present invention relates to an easily assembled and disassembled shade-providing structure, such as may be mounted to a playground assembly. The shade-providing structure comprises an outer frame defining an interior space and a canopy that may be positioned in that interior space. The canopy has one or more rods around its periphery, such as may be inserted through one or more pockets in the canopy fabric. Each of the outer frame and the rod(s) has a set of apertures configured to receive a locking fastener and a set of apertures configured to receive a jack screw or similar tensioning device. Accordingly, to assembly the structure, one or more jack screws can be used to provide the canopy with a desired tension and then locking fasteners can be used to secure the canopy to the outer frame.

Abstract: The present invention relates to an easily assembled and disassembled shade-providing structure, such as may be mounted to a playground assembly. The shade-providing structure comprises an outer frame defining an interior space and a canopy that may be positioned in that interior space. The canopy has one or more rods around its periphery, such as may be inserted through one or more pockets in the canopy fabric. Each of the outer frame and the rod(s) has a set of apertures configured to receive a locking fastener and a set of apertures configured to receive a jack screw or similar tensioning device. Accordingly, to assembly the structure, one or more jack screws can be used to provide the canopy with a desired tension and then locking fasteners can be used to secure the canopy to the outer frame.

Abstract: The present disclosure is directed to climbing units that provide an enhanced play experience through the incorporation of any of a variety of elements including nets, suspended portions, and coupling elements, and to playground structures that contain those climbing units. In some embodiments, the climber unit may comprise one or more rigid portions and one or more net-containing portions connected end-to-end to produce a continuous climbing pathway. In other embodiments, the climber unit may comprise one or more rigid portions and one or more suspended portions connected end-to-end to produce a continuous climbing pathway. The suspended portion may be attached to adjacent rigid portions by flexible couplers, such that the suspended portion will move when a child climbs through it. In other embodiments, the climber unit may be mounted to an elevated playground structure such that there are no footers connecting the climber unit to the ground.

Abstract: The present invention relates to a rotating play device, such as may be mounted to a play surface of an outdoor playground. The rotating play device includes a central post and an upper framework, e.g. upper ring, rotatably mounted to the central post. The device further includes a lower ring suspended from the upper framework by a plurality of cords. During rotation about the central post, the device is configured such that one or more children may (i) stand on the lower ring and hold the upper ring, (ii) sit on the lower ring and hold one or more of the plurality of cords, or (iii) both (i) and (ii). In some embodiments, at least one of the lower ring and the upper ring may be angled to provide a varying distance between the two rings and/or the cords may be flexible such that a user may modify the distance between the lower ring and upper framework at a given riding location.

Abstract: The present invention relates to an easily assembled and disassembled shade-providing structure, such as may be mounted to a playground assembly. The shade-providing structure comprises an outer frame defining an interior space and a canopy that may be positioned in that interior space. The canopy has one or more rods around its periphery, such as may be inserted through one or more pockets in the canopy fabric. Each of the outer frame and the rod(s) has a set of apertures configured to receive a locking fastener and a set of apertures configured to receive a jack screw or similar tensioning device. Accordingly, to assembly the structure, one or more jack screws can be used to provide the canopy with a desired tension and then locking fasteners can be used to secure the canopy to the outer frame.

Abstract: Poly(5-hydroxycytidylic acids), produced by the enzymatic polymerization of 5-hydroxycytidylic acid, possess the ability to induce the production of interferon and, furthermore, exhibit anti-viral properties.