A connector includes a first body, a second body, a first fastener, and a second fastener. The first body has a base portion and a protrusion, the protrusion extends away from the base portion along a first direction, and the first body has a first cavity that extends into the protrusion and towards the base portion along the first direction. The second body has a second cavity, which is shaped to receive the protrusion such that rotation of the first body relative to the second body is blocked. The connector may be used to attach structural members, for example during the construction of a modular structure.

An interconnect system for coupling first and second frame members includes female and male interconnect members. The female interconnect is secured to the first frame member and has defined therein a receptacle. The male interconnect member is secured to the second frame member and defines a protrusion configured for selective axial insertion into, and mating engagement with, the receptacle. The receptacle extends axially between a receptacle opening through which the protrusion is axially received and a receptacle rear wall at which the receptacle terminates. The protrusion terminates at a protrusion tip. The receptacle and protrusion are furthermore configured such that at least one of (a) the receptacle and the protrusion are complementarily keyed in order to prevent relative rotational displacement of the male and female interconnect members when they are in mutual mating engagement, and (b) the protrusion tip is magnetically attracted toward the receptacle rear wall.

A tube construction set. The tube construction set includes a set of tubes. Each tube includes a wall, where the wall is the body of the tube, a first end and a second end, where the second end is opposite the first end. Each tube also includes four holes near the first end of tube and four holes near the second end of the tube. The tube construction set also includes a set of connectors. Each connector is configured to attach two or more tubes to one another and includes a first port, where the first port is configured to receive a first tube a second port, where the second port is configured to receive a second tube. Each connector also includes a first hole near the first port and a second hole near the second port.

A modular structure system of detachable members, the system includes a support pillar and various connectors. The support pillar has a main body and a plurality of channel walls outwardly radiating from an outside surface of the main body. The channel walls are disposed lengthwise on the main body from one terminal end of the main body to another terminal end of the main body. The support pillar has a symmetrical cross-sectional shape and each of the channel walls has an expanded distal end forming two lips.

The invention relates to a coupling for connecting construction parts, a truss provided therewith and associated method and use. The coupling comprises a female and a male coupling part. The female coupling part comprises: a tubular receiving part, in the wall of which an opening is provided; a ball which is placed in the opening and which is movable in radial direction of the receiving part; and a locking sleeve which is screwed onto and encloses the receiving part and which by being screwed is movable in the longitudinal direction of the receiving part between an opened position, in which the locking sleeve allows movement of the ball in the opening for the purpose of placing/removing the male coupling part into/from the receiving part, and a closed position in which the locking sleeve locks the male coupling part in the female coupling part with the ball, wherein the male coupling part is an elongate pin which comprises in its outer wall a groove for the ball.

A three-dimensional structure is obtained from a tubular preform, which is obtained from a net of the Chebyshev type having a flared shape maintained by hoops, spacers, or cables. A method for installing such a structure, in which method the tubular preform is brought to the installation point, then deformations are applied to the preform that allow the final desired flared shape to be achieved.

A connector includes a first body, a second body, a first fastener, and a second fastener. The first body has a base portion and a protrusion, the protrusion extends away from the base portion along a first direction, and the first body has a first cavity that extends into the protrusion and towards the base portion along the first direction. The second body has a second cavity, which is shaped to receive the protrusion such that rotation of the first body relative to the second body is blocked. The connector may be used to attach structural members, for example during the construction of a modular structure.

Systems, devices, and methods for a portable voice recording apparatus comprising: a frame, where the frame comprises: a top triangular frame; a bottom triangular frame; and one or more support legs connecting the top triangular frame to the bottom triangular frame; an acoustic paneling attached to the frame, where the acoustic paneling encloses at least a portion of the frame, where the acoustic paneling provides an interior of the apparatus, and where the interior of the apparatus reduces noise and echo as compared to an exterior of the apparatus.

The disclosure is directed to an elongated geodesic dome with an arched-tunnel section. In some embodiments including: a first adjustable angle hub connector, the first adjustable angle hub connector being a connector of a first plurality of tubular struts, the first plurality of tubular struts being inserted into the first adjustable angle hub connector; a second adjustable angle hub connector, the second adjustable angle hub connector being a connector of a second plurality of tubular struts, the second plurality of tubular struts being inserted into the second adjustable angle hub connector; a third adjustable angle hub connector, the third adjustable angle hub connector being a connector of a third plurality of tubular struts, the third plurality of tubular struts being inserted into the third adjustable angle hub connector. The adjustable angle hub connectors may be removable for adjusting a length of the arched-tunnel section of the elongated geodesic dome.

An interconnect system for coupling first and second frame members includes female and male interconnect members. The female interconnect is secured to the first frame member and has defined therein a receptacle. The male interconnect member is secured to the second frame member and defines a protrusion configured for selective axial insertion into, and mating engagement with, the receptacle. The receptacle extends axially between a receptacle opening through which the protrusion is axially received and a receptacle rear wall at which the receptacle terminates. The protrusion terminates at a protrusion tip. The receptacle and protrusion are furthermore configured such that at least one of (a) the receptacle and the protrusion are complementarily keyed in order to prevent relative rotational displacement of the male and female interconnect members when they are in mutual mating engagement, and (b) the protrusion tip is magnetically attracted toward the receptacle rear wall.