A component comprising a first concentric element and a second concentric element is disclosed. The first and second concentric elements are positioned relative to each other in the positions in which they are to be bonded together. The first concentric element comprises a first bonding portion (48) with a first bonding face (50), and the second concentric element comprises a second bonding portion (58) with a second bonding face (60), a first passage (62), and a second passage (64). The second bonding portion (58) partially surrounds the first bonding portion (48) and the first and second bonding faces (50, 60) face each other. The first and second bonding faces (50, 60) comprise a first and second void face (56, 61) respectively. Collectively the first and second bonding faces (50, 60) comprise an alpha plug (52) having an alpha plug face, a beta plug (54) having a beta plug face, an alpha bearing face, and a beta bearing face, in which the alpha plug face is in sliding contact with the alpha bearing face and the beta plug face is in sliding contact with the beta baring face, the alpha plug (52) is integral with one of the first or second void faces (56, 61) and the alpha bearing face is integral with the other of the first or second void faces (56, 61), the beta plug (54) is integral with one of the first or second void faces (56, 61) and the beta bearing face is integral with the other of the first or second void faces (56, 61), and the alpha and beta plugs (52, 54) and first and second void faces (56, 61) collectively define a void. The first and second passages (62, 64) each extend through the second concentric element from a mouth which opens onto the void to a mouth in an accessible surface of the second concentric element.

A frame assembly for an aquarium is disclosed. The frame assembly supports a pair of doors, each enclosed by a door frame, which can slide back and forth on the frame assembly. The frame assembly can be secured to both a front wall and to a pair of sidewalls of an enclosure having an open top. A cover can close the open top to form an aquarium for amphibians.

An aquarium is disclosed. The aquarium includes a front wall, a back wall and a pair of sidewalls all extending upward from a bottom wall and being secured thereto. The front wall is shorter in height than the pair of sidewalls. The aquarium also includes a frame assembly. A pair of doors is slidably mounted within the frame assembly. A cover can be used to close the open top to form an aquarium for amphibians.

Some embodiments of the present disclosure relate to an apparatus including an additively manufactured node. The apparatus includes an additively manufactured interconnect co-printed with the node. The interconnect is configured to connect the node to a component.

Some embodiments of the present disclosure relate to an apparatus including an additively manufactured node having a socket. The apparatus includes one or more locating features co-printed with the node. The one or more locating features are configured to locate an end portion of a component in the socket.

Design of a 3-D truss structure, including a plurality of coupling nodes and a plurality of struts, is optimized by performing a quantitative optimization of an objective function corresponding to a figure of merit of the design. The quantitative optimization includes: generating a finite element analysis model, the analysis model a 3-D lattice mesh of strut-like finite elements; computing, with the finite element analysis model, a value for the objective function; and optimizing the objective function by executing at least two cycles of an optimization loop. The optimization loop includes a) computing a respective parameter of each strut-like finite element; b) deleting, from the finite element analysis model, selected finite elements for which a resulting mechanical property is less than a threshold; (c) computing an updated value for the objective function; and repeating the optimization loop until the objective function is within a desired tolerance of the specified value.

There are provided a holding strap, methods of making the same, and methods using such holding strap for tying down objects on a flatbed of a vehicle, retaining underground tanks, or lifting electrodes out of an electrolytic cell. The holding strap includes a chemically pre-treated strap component, an epoxy resin chemically bonded to the pre-treated strap component, and a hook component comprising a cavity that is configured and sized to receive at least a portion of the strap component, the epoxy resin being chemically bonded to internal surfaces of the cavity, so as to form the holding strap.

A method of securing a bracket arm to a cast section of a bracket for securement to inter alia a lighting column. The cast section comprises a main body and one or more extension sections extending from the main body. Each extension section has a lesser dimension than the main body such that a step is formed at the junction between the extension section and the main body and the distal end of the or each extension section has a concentric lip. The method comprises the steps of mounting the or each bracket arm over and along an associated extension section such that one end of the mounting arm abuts the step thereby providing a closed cavity bounded by the extension section, arm, step and lip; injecting structural adhesive through an aperture extending into the cavity; and allowing the adhesive to cure within the cavity.

A corner bracket, a frame assembly using corner brackets, and an aquarium utilizing the frame assembly are disclosed. The corner bracket includes a hollow base member having first and second hollow coupling members projecting outward therefrom. The first and second hollow coupling members are used to secure hollow frame members together using an expandable adhesive. Four hollow frame members and four corner brackets can form a frame assembly, typically having a rectangular configuration. The frame assembly supports a pair of doors, each enclosed by a door frame, which can slide back and forth on the frame assembly. The frame assembly can be secured to both a front wall and to a pair of sidewalls of an enclosure having an open top. A cover can close the open top to form an aquarium for amphibians.

The present disclosure proposes a part of a cycle frame, such as a bicycle frame for example, and also a part of a cycle fork. The part of the cycle frame or of the cycle fork comprises a core (10) and at least two shells (11, 12) that surround the core and are fixed to the core without being fixed directly to each other.

The present disclosure also relates to a method to assemble a cycle frame or a part of a cycle frame or a cycle fork or a part of a cycle fork.