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A Ziploc-branded storage bag Close-up from a cross section of the sealing mechanism. A zipper storage bag, slider storage bag, zipper bag, ziplock bag, zip-lock bag, ziploc bag, or zippie is an inexpensive flexible rectangular storage bag, usually transparent, made of polyethylene [1] [2] or similar plastic, that can be sealed and opened many times, either by a slider, which works in a similar ...
A coil zipper with its slider removed. Coil zippers now form the bulk of sales of zippers worldwide. The slider runs on two coils on each side; the teeth are formed by the windings of the coils. Two basic types of coils are used: one with coils in spiral form, usually with a cord running inside the coils; the other with coils in ladder form ...
A slider-crank linkage is a four-link mechanism with three revolute joints and one prismatic (sliding) joint. [1] The rotation of the crank drives the linear movement of the slider, or the expansion of gases against a sliding piston in a cylinder can drive the rotation of the crank. There are two types of slider-cranks: in-line and offset.
Slider-crank chain inversion arises when the connecting rod, or coupler, of a slider-crank linkage becomes the ground link, so the slider is connected directly to the crank. This inverted slider-crank is the form of a slider-crank linkage that is often used to actuate a hinged joint in construction equipment like a crane or backhoe, as well as ...
A major technological change came in 1950, when the company purchased a chain machine from the U.S. that allowed the automation of the zipper making process. Previously, YKK zippers were made by hand, and hence had an inferior quality compared to automated zippers from abroad. In March 1951, YKK relocated its headquarters to Chūō, Tokyo.
Drawing of 1917 slide fastener patent filing. Talon was the first slide fastener, a/k/a zipper, manufacturing company. It was founded in 1893 as the Universal Fastener Company, manufacturing hookless fasteners for shoes. In 1913 it moved to Meadville, Pennsylvania, becoming the first manufacturer of zippers. The company flourished through the ...
The zipper teeth or chain is measured in terms of chain width gauge size. The bigger the gauge number, the wider the chain width. Slider. This refers to the device that is pulled up or down to open or close the zipper. It is what clasps the zipper teeth or separates them depending on the direction of movement.
The Zipper was created by Joseph Brown under Chance Rides in 1968 in Wichita, Kansas, and registered under patent 3,596,905 in 1971. [6] The ride's basic design was based on an earlier ride called The Swooper, invented in 1928, which also featured a series of cars being pulled along a cable around an oblong framework. [6]
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