Latest Gideon Sundbäck Stories
In the run-up to Canada's 142nd birthday on July 1, a survey Thursday found much of the population isn't aware Canadians invented light bulbs and the zipper. The Interac banking group, launched by the country's five largest banks in 1984 linking automated banking machines, commissioned the Strategic Counsel poll of 1,000 citizens June 4-10.
A zipper is a device that temporarily joins two edges of fabric. It is used in clothing, luggage and other bags, sporting goods, camping gear, and other daily use items. The edges are fixed with tens to hundreds of specially shaped metal or plastic teeth. The teeth, also referred to as elements, can be individual or a continuous coil. The slider moves along the rows of teeth and meshes them together and separates them depending on the direction of the slider's movement. Zippers are...
- The abrogation of a law by a higher authority; annulment.