A lowering system for lowering ceiling formworks during the removal of formworks of a building ceiling, comprising a reciprocating piston and a support base, and a locking device, wherein the reciprocating piston is slidably mounted in the support base, and can be pushed from an extended working position to a lowered position, and can be locked in the extended position by means of the locking device. The locking device has a pivot bearing and an eccentric lever, wherein the eccentric lever is rotatably mounted in the pivot bearing, and the reciprocating piston and the support base are supported against each other in the working position by means of the eccentric lever.

A lowering system for lowering ceiling formworks during the removal of formworks of a building ceiling, comprising a reciprocating piston and a support base, and a locking device, wherein the reciprocating piston is slidably mounted in the support base, and can be pushed from an extended working position to a lowered position, and can be locked in the extended position by means of the locking device. The locking device has a pivot bearing and an eccentric lever, wherein the eccentric lever is rotatably mounted in the pivot bearing, and the reciprocating piston and the support base are supported against each other in the working position by means of the eccentric lever.

A climbing boot for a rail-guided climbing system, which can be used in particular as a climbing formwork, climbing frame, protective climbing wall and/or climbing working platform. The climbing boot comprises a main boot body having first and second rail guide elements, wherein at least the first rail guide element, in particular the first and second rail guide elements, is/are arranged on the main boot body so as to be pivotable and/or extendable in such a way that, in the pivoted and/or extended guidance state, a climbing rail, which is arranged slidably between the first and second rail guide elements is guided by the rail guide elements by portions of the climbing rail being surrounded by the rail guide elements.

A climbing boot for a rail-guided climbing system, which can be used in particular as a climbing formwork, climbing frame, protective climbing wall and/or climbing working platform. The climbing boot comprises a main boot body having first and second rail guide elements, wherein at least the first rail guide element, in particular the first and second rail guide elements, is/are arranged on the main boot body so as to be pivotable and/or extendable in such a way that, in the pivoted and/or extended guidance state, a climbing rail, which is arranged slidably between the first and second rail guide elements is guided by the rail guide elements by portions of the climbing rail being surrounded by the rail guide elements.

Various implementations described herein are directed to a formwork system. In one implementation, the formwork system includes aluminum extrusions and aluminum castings. The aluminum castings and the aluminum extrusions can be assembled by being pressed and riveted together.

Various implementations described herein are directed to a formwork system. In one implementation, the formwork system includes aluminum extrusions and aluminum castings. The aluminum castings and the aluminum extrusions can be assembled by being pressed and riveted together.

A supporting device for the construction industry. Said device has a fixing element which rests against a side wall and is fixed at a fixing point of the side wall. Said device also has a cantilever which is connected to the fixing element and, when the fixing element is in the fixed state, projects from the side wall such that a load element can rest against a bearing point of a bearing element of the cantilever. The load element can now be displaced in a displacement direction substantially parallel to the side wall relative to the cantilever and, when the load element rests against the bearing element of the cantilever, the cantilever is coupled to the load element such that a displacement force component acts on the cantilever in the displacement direction when the load element is displaced, said displacement force component resulting in a torque on the cantilever.

A supporting device for the construction industry. Said device has a fixing element which rests against a side wall and is fixed at a fixing point of the side wall. Said device also has a cantilever which is connected to the fixing element and, when the fixing element is in the fixed state, projects from the side wall such that a load element can rest against a bearing point of a bearing element of the cantilever. The load element can now be displaced in a displacement direction substantially parallel to the side wall relative to the cantilever and, when the load element rests against the bearing element of the cantilever, the cantilever is coupled to the load element such that a displacement force component acts on the cantilever in the displacement direction when the load element is displaced, said displacement force component resulting in a torque on the cantilever.

The wall jack may comprise a strongback coupler, a horizontal arm, a handrail holder, a support strut, and a support foot. The wall jack may be adapted to couple to a strongback of a concrete form. The strongback coupler may couple to the strongback by hanging on a bolt protruding from the strongback. The horizontal arm may extend away from the strongback coupler in a direction that is perpendicular to the concrete form. The support strut may brace the horizontal arm diagonally between a midpoint of the horizontal arm and the support foot pressing against the strongback at a location that is below the strongback coupler. The handrail holder may retain a handrail post in a vertical orientation. The wall jack may be used in groups of two or more to support scaffold planks or walk boards of a scaffold.

The wall jack may comprise a strongback coupler, a horizontal arm, a handrail holder, a support strut, and a support foot. The wall jack may be adapted to couple to a strongback of a concrete form. The strongback coupler may couple to the strongback by hanging on a bolt protruding from the strongback. The horizontal arm may extend away from the strongback coupler in a direction that is perpendicular to the concrete form. The support strut may brace the horizontal arm diagonally between a midpoint of the horizontal arm and the support foot pressing against the strongback at a location that is below the strongback coupler. The handrail holder may retain a handrail post in a vertical orientation. The wall jack may be used in groups of two or more to support scaffold planks or walk boards of a scaffold.