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Fernand Petzl (April 7, 1913 – May 31, 2003) was a caver and manufacturer of outdoor equipment under the brand name Petzl. Petzl lived most of his life in the village of Saint-Ismier (near Grenoble ), France at the foot of the mountain Dent De Crolles .
As of 2001, Petzl had approximately 600 products. [4] Later in 2002, the QUARK ERGO was developed and designed to be the first leashless, angled ice axe. [2] In 2004, Petzl's first fall arrest device for work at height was developed. In 2006, the Petzl corporation introduced new general director Pascal Bonino, and the Petzl Foundation was also ...
The Grigri works by pinching the rope when it is moving quickly (like in a fall), making it an assisted braking belay device.This function distinguishes it from traditional belay devices such as a Sticht plate or an ATC, whose braking mechanisms depend entirely on the user controlling the rope in a specific manner to increase or decrease friction.
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All modern pressure cookers will have a pressure regulator valve and a pressure relief valve as a safety mechanism to prevent explosion in the event that the pressure regulator valve fails to adequately release pressure. Some older models lack a safety release valve [citation needed]. Most home cooking models are built to maintain a low and ...
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