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==Pull handles== [[Image:Drawer handle.jpg|thumb|Many [[drawer]]s use pull handles.]] One major category of handles are ''pull'' handles, where one or more hands grip the handle or handles, and exert force to shorten the distance between the hands and their corresponding shoulders. The three criteria stated above are universal for pull handles. Many pull handles are for lifting, mostly on objects to be carried. Horizontal pull handles are widespread, including [[drawer pull]]s, handles on latchless doors and the outside of car doors. The inside controls for opening car doors from inside are usually pull handles, although their function of permitting the door to be ''pushed'' open is accomplished by an internal unlatching linkage. Pull handles are also a frequent host of common [[Door Handle Bacteria|door handle bacteria]] such as [[Escherichia coli|e-coli]], fungal or other viral infections.<ref>[http://www.healthywaukesha.com/door-handles-can-spread-germs Door Handles Can Spread Germs] {{Webarchive|url=https://web.archive.org/web/20180120065648/http://www.healthywaukesha.com/door-handles-can-spread-germs |date=2018-01-20 }} retrieved November 2016</ref> Two kinds of pull handles may involve motion in addition to the hand-focused motions described: * Pulling the starting cord on a small internal-combustion engine may, besides moving the hand toward the shoulder, also exploit simultaneously pushing a wheeled vehicle away with the other hand, stepping away from the engine, and/or standing from a squat. * Some throwing motions, as in a [[track and field|track-and-field]] [[hammer throw]], involve pulling on a handle against centrifugal force (without bringing it closer), in the course of accelerating the thrown object by forcing it into circular motion.
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