Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
A wall jack includes a center elongated section, a lower elongated section having a distal end portion pivotally connected to a proximal end portion of the center section and an upper elongated section having a proximal end portion pivotally connected to a distal end portion of the center section. The wall jack is movable between an extended and collapsed position. In the extended position, the lower section is releasably locked to the proximal end portion of the center section and the upper section is releasably locked to the distal end portion of the center section such that the center, lower and upper sections form a longitudinally extending wall jack. In the collapsed position, the upper section is rotated in a first direction into the center section, and the lower section is rotated in a second direction that is opposite the first direction into the center section.
A wall jack includes a center elongated section, a lower elongated section having a distal end portion pivotally connected to a proximal end portion of the center section and an upper elongated section having a proximal end portion pivotally connected to a distal end portion of the center section. The wall jack is movable between an extended and collapsed position. In the extended position, the lower section is releasably locked to the proximal end portion of the center section and the upper section is releasably locked to the distal end portion of the center section such that the center, lower and upper sections form a longitudinally extending wall jack. In the collapsed position, the upper section is rotated in a first direction into the center section, and the lower section is rotated in a second direction that is opposite the first direction into the center section.
Wall raising apparatus
MULLINS BILLY R (Autor:in)
21.07.2015
Patent
Elektronische Ressource
Englisch
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