|
It has been suggested that this article or section be merged into Keychain. (Discuss) A keyring, attached to several keys, an automotive remote entry device, a keychain, and a novelty carabiner. A key can be added to a keyring by forcing an end of the loop open and sliding the key along the spiral. A looped, metal keyring, with a plastic fob. Keyring ballpen Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (August 2009) A keyring (also called "split ring") is a ring (usually made of metal or plastic) that holds keys and other small items, which are sometimes connected to keychains. Other types of keyrings are made of leather, wood and rubber. Keyrings were invented in the 19th century.[citation needed] The most common form of the keyring is a single piece of metal in a 'double loop'. Either end of the loop can be pried open to allow a key to be inserted and slid along the spiral until it becomes wholly engaged onto the ring. Novelty carabiners are also commonly used as keyrings for ease of access and exchange. Often the keyring is adorned with a key fob for self-identification. Other forms of rings may use a single loop of metal or plastic with a mechanism to open and securely close the loop. Physical structure Keyrings consist of spring metal, generally steel, that is usually coated in chromium to prevent corrosion. Steel keyrings contain high-tensile steel and work by having such rigidity in the metal that it constantly applies pressure on itself. This grade of steel is also found in older-model cars' suspension systems which rely on the rigidity of the metal to prevent it from collapsing. See also Circle cotter Key fob Key chain References
Categories: ToolsHidden categories: Articles to be merged from September 2009 All articles to be merged Articles lacking sources from August 2009 All articles lacking sources All articles with unsourced statements Articles with unsourced statements from May 2009
We are high quality suppliers, our products such as China fine leather briefcases , fine leather briefcases Manufacturer for oversee buyer. To know more, please visits custom leather briefcases.
Related Articles -
China fine leather briefcases, fine leather briefcases Manufacturer,
|
