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A rubber band (also known as an elastic, gum band or lacky band) is a loop of rubber, usually ring or oval shaped, and commonly used to hold multiple objects together. The rubber band was patented in England on March 17, 1845, by Stephen Perry .
Hook-and-loop fasteners, commonly known as Velcro (a genericized trademark), hook-and-pile fasteners or touch fasteners are versatile fastening devices that allow two surfaces to be repeatedly attached and detached with ease. Invented in the mid-20th century, they are widely used in clothing, accessories, and various industrial and consumer ...
The area in the centre of the hysteresis loop is the energy dissipated due to internal friction. In the elastic hysteresis of rubber, the area in the centre of a hysteresis loop is the energy dissipated due to material internal friction. Elastic hysteresis was one of the first types of hysteresis to be examined. [11] [12]
Hook-and-loop fastener, invented by de Mestral. Swiss electrical engineer George de Mestral who studied at EPFL invented his first touch fastener when, in 1941, he went for a walk in the Alps, and wondered why burdock seeds clung to his woolen socks and coat, and also his dog Milka.
Typical O-ring and application. An O-ring, also known as a packing or a toric joint, is a mechanical gasket in the shape of a torus; it is a loop of elastomer with a round cross-section, designed to be seated in a groove and compressed during assembly between two or more parts, forming a seal at the interface.
Three kinds of belt loops are visible: a loop sewn to the garment itself (middle), a keeper loop affixed to the belt (left), and a freely detachable loop (right) Some garments have a series of belt loops at the waist, through which a belt can be threaded. Additionally, many belts have a "keeper loop" affixed to one end, near the buckle.
A resistance band is an elastic band used for strength training. They are also commonly used in physical therapy , [ 1 ] specifically by convalescents of muscular injuries, including cardiac rehab patients, to allow slow rebuilding of strength.
Sweatbands are often made of a continuous loop of terrycloth, as it is a particularly absorbent fabric. Folded bandanas, usually knotted behind the head, also serve this purpose. Headbands are usually used for sports but have not been popular since the late 1970s or early 1980s.