A press-fit window insert configured to provide secondary protection to an existing window, having a carrier, a fin, and a fastening clip. The carrier includes a substantially rigid framework having channels within the framework configured to securely accept one or more attachments. The fin extends from the carrier and includes a substantially flexible blade extending from a base portion of the fin. The base portion of the fin is configured to interlock the fin to the carrier. The fastening clip includes a substantially rigid brim extending from a base portion of the fastening clip. The base portion of the fastening clip is configured to interlock the fastening clip to the carrier.

A corner joint for fenestration frames and the like includes first and second frame members having hollow interiors and ends joined in abutment. A corner key insert has legs inserted into the ends of the frame members. End portions of the legs engage the hollow interiors of the frame members forming adhesive cavities within the frame members and along the end portions of the corner key legs. Adhesive is disposed within the cavities to bond the corner key legs to the frame members, thereby creating a structural joint between the frame members. The corner key insert may include multiple injection ports for delivering adhesive to the cavities from a selected side of the frame assembly. Legs of the corner key may have notches formed therein to receive an internal wall of the frame members, and distal ends of the legs may include a flow barrier that contours along the notches.

A press-fit window insert configured to provide secondary protection to an existing window, having a carrier, a fin, and a fastening clip. The carrier includes a substantially rigid framework having channels within the framework configured to securely accept one or more attachments. The fin extends from the carrier and includes a substantially flexible blade extending from a base portion of the fin. The base portion of the fin is configured to interlock the fin to the carrier. The fastening clip includes a substantially rigid brim extending from a base portion of the fastening clip. The base portion of the fastening clip is configured to interlock the fastening clip to the carrier.

A cornerlock is used with a frame assembly. The frame assembly includes first and second frame members each having walls defining interior voids. The cornerlock extends into the interior void of each of the first and second frame members. The cornerlock comprises first and second body members mating with the interior voids of the first and second frame members, respectively. Each body member has proximal and distal ends and are rigidly fixed to one another. The first body member has a leg and an arm both extending from the proximal end to the distal end. The leg is resistant to deflection. The arm is deflectable about the proximal end and immediately deflects upon engagement with the first frame member for engaging the leg with one of the plurality of walls and biasing the arm into engagement with another one of the plurality of walls of the first frame member.

A corner piece for mounting two profiles at an angle, the corner piece comprising at least a first and a second leg mounted mounted together at an angle to each other, wherein the first leg is arranged to be slid into a mounting channel of a first profile along the first direction and the second leg is arranged to be slid into a mounting channel of a second profile along the second direction, characterized in that at least the first leg comprises at least one protrusion extending along a height direction of the mounting channel, so that when sliding the first leg into the mounting channel of the first profile, the protrusion clamps the first leg into a predetermined position in the mounting channel of the first profile.

Corner joints and methods of forming corner joints are described herein. The corner joints may provide the appearance of a mortise and tenon joint on both the exterior and interior surfaces of the corner joint, but include a mitered connection within the joint. Structures including at least one of the corner joints are also described.

A cornerlock is used with a frame assembly which includes first and second frame members each having a plurality of walls extending between first and second ends. Each of the first and second frame members define an interior with the cornerlock extending into the interiors. An article is coupled to the first and second frame members. The cornerlock includes a first body member configured to mate with the interior of the first frame member and a second body member configured to mate with the interior of the second frame member. Each of the body members has a hinge end and are rotatably coupled together at the hinge ends. A collar defines a hole with at least one of the first and second body members extending through the hole such that the collar is disposed substantially at the hinge end for engaging each of the first and second frame members.

A connecting device for coupling first and second members includes a body having a first leg and a second leg integrally connected to the first leg. The first leg and the second leg are oriented at an angle with respect to each other. A rigid material core extends through both the first leg and the second leg, the core including a first core member integrally connected to a second core member. The first core member is angularly oriented with respect to the second core member such that the core defines a geometric shape. A resilient material sleeve commonly covers the core of both the first leg and the second leg. The first leg is frictionally received in a first member and the second leg is frictionally received in a second member to couple the first member to the second member.

A corner bracket for a window blind frame, the corner bracket including a central body portion and extending from the central body portion a first connector and a second connector, wherein the second connector is angled relative to the first connector; each connector includes a locating arm, a friction plate and a stop surface; wherein each friction plate defines a pair of opposed surfaces and each surface carries thereon a respective outwardly projecting deformable rib; and wherein each locating arm further includes at least one further outwardly projecting deformable rib.

A method of connecting hollow elongate members 12 which may be window frame members. The method comprising locating a plastics material insert 16 extending outwardly for a short distance from each hollow member 12, heating the inserts, and bringing the hollow members together such that the heated inserts 16 fuse together to connect the hollow members 12.