Patent ID: 6279481
Filing Date: 2001-08-28
Classification: F42D

Abstract:
A device for provoking collapse of a snow cornice, the device comprising:at least one gas exploder (11) comprising:a support base (14) having a bottom surface for resting against a ground surface and a top surface supporting a main cylinder (12) extending substantially perpendicular to the support base (14);a rigid seating (15) for attachment to a side of a mountain and a hollow positioning tube (13) having a first end mounted to the rigid seating (15) and a second opposed end connected to the main cylinder (12);a supply conduit (20) communicating with the positioning tube (13) for supplying a mixture of an explosive gas to the main cylinder (12) via the positioning tube (13), an upstream end of the supply conduit (20) being connected to a first flexible conduit (23) for connection to a source of oxygen and to a second flexible conduit (24) for connection to a source a combustible gas; andan ignition system (21) attached to the supply conduit, adjacent the upstream end of the supply conduit, for igniting the explosive gas mixture when desired;wherein the first end of the positioning tube (13) is articulated to the rigid seating (15) about a generally horizontal axis.