Double door system (1) comprising an understriking door leaf (2), an overstriking door leaf (3), a first door operator (11) adapted to move the understriking door leaf (2) between an open and a closed position, a second door operator (12) adapted to move the overstriking door leaf (3) between an open and a closed position and a mechanical brake arrangement (400), wherein the understriking door leaf (2) should be closed before the overstriking door leaf (3) to close the double door, and wherein the mechanical brake arrangement (400) is arranged to brake the movement of the overstriking door leaf (3). Mechanical brake arrangement (400) for controlling the movement of one of the door leafs of a double door system. Door operator system (10) comprising a first door operator (11), a second door operator (12) and a mechanical brake arrangement (400).

The present invention relates to a method for producing one or more low molecular weight aromatic lignin-derived compounds. The method preferably comprises providing lignocellulosic material, subjecting the lignocellulosic material to a pulping process, separating pulp to provide a substantially pulp-free process stream comprising a modified lignin-derived component, isolating the modified lignin-derived component, subjecting the isolated modified lignin-derived component to a decomposition step comprising oxidative cracking (cracking and oxidizing) or reducing under the influence of a catalyst or electro-oxidation, and subjecting the resulting products to an isolation step, to provide a low molecular weight aromatic lignin-derived compound. Said compound may be further modified, e.g. by annulation. The inventive method preferably comprises further oxidizing said compound to a redox active compound. Additionally, the present invention relates to compounds obtainable by the inventive method and to an assembly for carrying out the inventive method. Furthermore, the present invention refers to a method for providing an existing pulp and/or paper manufacturing plant with said assembly.

A safety cabinet includes an enclosure and at least one door to selectively seal the enclosure. The safety cabinet can be used to store, for example, flammable liquids, flammable waste, corrosives, pesticides, or combustible waste. The safety cabinet incorporates a thermally-actuated damper that includes a body, a valve plate, and a pivot assembly. The valve plate is disposed within the passage of the body such that the valve plate is movable between an open position and a closed position. The pivot assembly includes a biasing system adapted to bias the valve plate to the closed position and a fusible link interconnected between the body and the biasing system to constrain the valve plate from moving from the open position to the closed position. The fusible link is configured to melt at a predetermined temperature to thereby allow the biasing system to move the valve plate to the closed position.

A safety cabinet includes an enclosure and at least one door to selectively seal the enclosure. The safety cabinet can be used to store, for example, flammable liquids, flammable waste, corrosives, pesticides, or combustible waste. The safety cabinet incorporates a thermally-actuated damper that includes a body, a valve plate, and a pivot assembly. The valve plate is disposed within the passage of the body such that the valve plate is movable between an open position and a closed position. The pivot assembly includes a biasing system adapted to bias the valve plate to the closed position and a fusible link interconnected between the body and the biasing system to constrain the valve plate from moving from the open position to the closed position. The fusible link is configured to melt at a predetermined temperature to thereby allow the biasing system to move the valve plate to the closed position.

A position adjustment apparatus includes a housing main body, a connecting shaft, a spring, a guiding shaft and a rear shaft. The connecting shaft and the spring are installed between the guiding shaft and the rear shaft, and the spring is configured to be a compression spring; therefore, the structure of the position adjustment apparatus is simplified, manufacturing costs are reduced, and the assembly and manufacturing speed of the apparatus are increased along with the use of the compression spring to reduce the destruction of the spring structure due to pulling thereon. Consequently, as the guiding shaft drives the connecting shaft to actuate the rear shaft, the objective of prolonging the useful lifetime of the position adjustment apparatus can be achieved without the use of any torsion springs or pull springs.

A position adjustment apparatus includes a housing main body, a connecting shaft, a spring, a guiding shaft and a rear shaft. The connecting shaft and the spring are installed between the guiding shaft and the rear shaft, and the spring is configured to be a compression spring; therefore, the structure of the position adjustment apparatus is simplified, manufacturing costs are reduced, and the assembly and manufacturing speed of the apparatus are increased along with the use of the compression spring to reduce the destruction of the spring structure due to pulling thereon. Consequently, as the guiding shaft drives the connecting shaft to actuate the rear shaft, the objective of prolonging the useful lifetime of the position adjustment apparatus can be achieved without the use of any torsion springs or pull springs.

A position adjustment apparatus includes a housing main body, a connecting shaft, a spring, a guiding shaft and a rear shaft. The connecting shaft and the spring are installed between the guiding shaft and the rear shaft, and the spring is configured to be a compression spring; therefore, the structure of the position adjustment apparatus is simplified, manufacturing costs are reduced, and the assembly and manufacturing speed of the apparatus are increased along with the use of the compression spring to reduce the destruction of the spring structure due to pulling thereon. Consequently, as the guiding shaft drives the connecting shaft to actuate the rear shaft, the objective of prolonging the useful lifetime of the position adjustment apparatus can be achieved without the use of any torsion springs or pull springs.

A position adjustment apparatus includes a housing main body, a connecting shaft, a spring, a guiding shaft and a rear shaft. The connecting shaft and the spring are installed between the guiding shaft and the rear shaft, and the spring is configured to be a compression spring; therefore, the structure of the position adjustment apparatus is simplified, manufacturing costs are reduced, and the assembly and manufacturing speed of the apparatus are increased along with the use of the compression spring to reduce the destruction of the spring structure due to pulling thereon. Consequently, as the guiding shaft drives the connecting shaft to actuate the rear shaft, the objective of prolonging the useful lifetime of the position adjustment apparatus can be achieved without the use of any torsion springs or pull springs.

The present invention relates to novel lignin-derived compounds and compositions comprising the same and their use as redox flow battery electrolytes. The invention further provides a method for preparing said compounds and compositions as well as a redox flow battery comprising said compounds and compositions. Additionally, an assembly for carrying out the inventive method is provided.

The present invention relates to novel lignin-derived compounds and compositions comprising the same and their use as redox flow battery electrolytes. The invention further provides a method for preparing said compounds and compositions as well as a redox flow battery comprising said compounds and compositions. Additionally, an assembly for carrying out the inventive method is provided.