A system for joining together pieces of cardboard is well-suited for use by children as a toy, or for more useful purposes such as joining cardboard to make useful structures such as furniture. The system includes various fasteners, connectors and supports that can be used to join pieces of cardboard without the need for tools such as drills, screwdrivers, wrenches, hammers, or the like. The system permits great flexibility in joining cardboard together such that it might be used to create sculptures or whimsical structures of a user's imagination, recreational structures like play forts or playhouses, or more useful items like furniture. Additional connectors may include ball and socket connectors and an extender that permits use with thicker and more sheets of cardboard.

A side bracket is proposed. The side bracket includes: a lower side bracket disposed under a square bar and having an open structure formed opposite to a predetermined section of a rectangular section by bending both edge sections positioned around the predetermined section; a tightener disposed through the lower side bracket and opening or closing the open structure of the lower side bracket; an upper side bracket being formed as a rectangular pipe, surrounding the square bar, and rotating on the lower side bracket with respect to the predetermined section of the rectangular section; and a horizontal fastener and a vertical fastener being in contact with the square bar through a side and another side of the upper side bracket, respectively.

A mounting device includes a first male threaded fastening member such as a lag screw and a second male threaded fastening member such as a bolt. The male threaded fastening members are secured to one another through a joining member such as a bolt and female threaded fastening members such as wingnuts or star knobs. Tightening the female threaded fastening members fixes an angle between the male threaded fastening members without the use of tools. The first male threaded fastening member typically mounts to a tree, a post, or the ground and the second male threaded fastening member typically mounts to a camera or other electronic device. Adapters can secure the mounting device to steel fence posts or step-in posts. An internal spacing device with a flange prevents wear and tear of components of the mounting device.

A mounting device includes a first male threaded fastening member such as a lag screw and a second male threaded fastening member such as a bolt. The male threaded fastening members are secured to one another through a joining member such as a bolt and female threaded fastening members such as wingnuts or star knobs. Tightening the female threaded fastening members fixes an angle between the male threaded fastening members without the use of tools. The first male threaded fastening member typically mounts to a tree, a post, or the ground and the second male threaded fastening member typically mounts to a camera or other electronic device. Adapters can secure the mounting device to steel fence posts or step-in posts. An internal spacing device with a flange prevents wear and tear of components of the mounting device.

A jack pad holding devices for supporting a jack pad to an aircraft, and a method for jacking an aircraft are provided. In one non-limiting example, the jack pad holding device includes a coupler housing configured for holding the jack pad. Coupling elements are coupled to the coupler housing and are configured to couple to the aircraft.

The invention comprises a first fixture group for clamping a first erecting rod, a second fixture group for clamping a second erecting rod, a fixed bolt and a compression spring, wherein the first fixture group comprises a first cylindrical portion with a first non-circular axisymmetric profile, the second fixture group comprises a second cylindrical portion sleeved with the first cylindrical portion, the second cylindrical portion comprises a second non-circular axisymmetric profile correspondingly sleeved with the first non-circular axisymmetric profile, and the first cylindrical portion axially slides relative to the second cylindrical portion to have a rotatable rotating position and a non-rotatable clamping position, the fixed bolt penetrates through the second cylindrical portion, the first cylindrical portion and the compression spring to be screwed with a nut, and the first cylindrical portion is pushed by the compression spring to move from the rotating position to the clamping position.

A handle assembly is provided with a handle sized to be grasped manually with a slot formed along a length. A first plurality of fasteners is provided, each with a shank and a head sized to be received in the slot to fasten the handle to a drawer or a door at various fastener mounting patterns. A method to install a handle assembly inserts a shank of at least one fastener through an aperture in a drawer or a door. A handle is provided that is sized to be grasped manually with a slot formed along a length. The slot of the handle is slid along a head of the at least one fastener. The at least one fastener is tightened.

A cable tie mount for supporting an object, the cable tie mount includes: a body including a mounting face formed on a first side of the body, a threaded bore formed in a second opposing side of the body, and a first cable tie passage formed on the body and configured to receive a cable tie therethrough; and a support portion including a threaded portion extending therefrom and configured to threadably engage the threaded bore formed in the second opposing side of the body. The body is configured to mount to the object with one or more cable ties, and wherein the body is configured to be threadably secured to the support portion for supporting the object mounted on the body at a desired location.

A thermal concrete wing nut anchor includes a screw having an external thread, and a wing nut mounted on the screw. The screw has a first end provided with an enlarged stop flange, and a second end provided with a drilling tip. The stop flange is provided with a driving head. The wing nut is made of a metal sheet plate which is formed integrally by pressing. The wing nut has a middle provided with a first ear and at least one second ear. The wing nut has an internal thread extending through the first ear and the at least one second ear. The external thread of the screw is screwed through the internal thread of the wing nut.

A thermal concrete wing nut anchor includes a screw having an external thread, and a wing nut mounted on the screw. The screw has a first end provided with an enlarged stop flange, and a second end provided with a drilling tip. The stop flange is provided with a driving head. The wing nut is made of a metal sheet plate which is formed integrally by pressing. The wing nut has a middle provided with a first ear and at least one second ear. The wing nut has an internal thread extending through the first ear and the at least one second ear. The external thread of the screw is screwed through the internal thread of the wing nut.