Hepp Wenger Ryffel AG

The present application concerns a fuel supply system, an internal combustion engine, a propulsion system, a use of a vacuum ejector, and a method for operating an internal combustion engineThe fuel supply system (100) for supplying a fuel, in particular methanol, ammonia, LNG, or LPG, to an internal combustion engine (200), in particular having at least one cylinder (210) with a bore having a diameter of at least 200 mm, comprises a double-walled fuel pipe (10) for guiding the fuel to at least one fuel injector (1) of the large combustion engine (200). The double-walled fuel pipe (10) comprises a fuel line (12) and a fuel pipe space (11i, 11o) at least partly surrounding the fuel line (12), wherein the double-walled fuel pipe (10) comprises an outside fuel pipe section (10o) arrangeable outside of an engine room (226) hosting the at least one cylinder (210) and an inside fuel pipe section (10i) arrangeable inside of the engine room (226). The fuel supply system (100) further comprises a double-walled return pipe (13) comprising a return line (15) and a return pipe space (14i, 14o) at least partly surrounding the return line (13). The double-walled return pipe (13) comprises an outside return pipe section (13o) arrangeable outside of the engine room (226) and an inside return pipe section (13i) arrangeable inside of the engine room (226). The fuel pipe space (11i, 11o) is fluidly connected or connectable to the return pipe space (14i, 14o), and the fuel supply system (100) comprises a leakage line (20) which is fluidly connected or connectable to the fuel pipe space (11i) of the inside fuel pipe section (10i) and to the return pipe space (14i) of the inside return pipe section (13i).

The present invention is related to a process for the preparation of a purified solution (PS) containing a polyester depolymerization product, said method comprising the steps of forming a blend comprising a waste stream (W) of polyester and at least one diol monomer HO-R<1>-OH (A), which is capable of reacting with the polyester, exposing the blend to conditions suitable for at least partial depolymerization of the polyester, mixing the obtained depolymerization solution with a cooling liquid (C) and removing thus solidified liquifying contaminant in solid form, so as to obtain the purified solution (PS) containing the polyester depolymerization product, wherein the cooling liquid (C) is pure diol monomer HO-R<1>-OH (A) that has been adjusted to the temperature T2, and the diol monomer HO-R<1>-OH (A) added to the waste stream (W) is provided as a portion of the purified solution (PS) containing the polyester depolymerization product. The present invention is also related to a process for the preparation of a polyester from said purified solution (PS), and to a device for performing said processes.

The present invention is related to a process for the preparation of a purified solution (PS) containing a polyester depolymerization product, said method comprising the steps of forming a blend comprising a waste stream (W) of polyester and at least one diol monomer HO-R<1>-OH (A), which is capable of reacting with the polyester, exposing the blend to conditions suitable for at least partial depolymerization of the polyester, mixing the obtained depolymerization solution with a cooling liquid (C) and removing thus solidified liquifying contaminant in solid form, so as to obtain the purified solution (PS) containing the polyester depolymerization product, characterized in that the cooling liquid (C) is a portion of the purified solution (PS). The present invention is also related to a process for the preparation of a polyester from said purified solution (PS), and to a device for performing said processes.

The invention is directed to a HITU device (200) comprising a therapy transducer (202), a displacer (205) for the therapy transducer (202), and a controller (211), and preferably a RF generator (208). The displacer (201) is adapted to move the therapy transducer (202) such that a focus (F) of the therapy transducer (202) is moved in a first direction (215). The controller (211) is adapted to operate the displacer (205) to move the therapy transducer (205) while the therapy transducer (205) is emitting a pulse (P).

The invention discloses a HITU device (400) comprising a radiofrequency generator (404), a first controller (408), and a user interface (407). The radiofrequency generator (404) is configured for delivering a high-power radiofrequency signal within at least a first frequency band and a second frequency band. The first controller (408) is configured for switching between the first and the second frequency band. The user interface (407) comprises a switch which, when activated, causes the first controller (408) to change the output frequency of the radiofrequency generator (404) from the first to the second frequency band or from the second to the first frequency band.

Brüheinheit (3) einer Getränkezubereitungsmaschine, wobei die Brüheinheit (3) zwei korrespondierende Brühkammerhälften (11, 12) aufweist, welche relativ zueinander beweglich angeordnet sind, um von einer offenen Stellung zum Ausbringen und Einlegen einer Kapsel (30) in eine geschlossene Stellung zum Ausbilden einer Brühkammer (10) und zum Einschliessen und Extrahieren der Kapsel (60) gebracht zu werden, wobei die Brüheinheit (3) derart ausgestaltet ist, dass eine in der Brühkammer (10) eingeschlossene Kapsel (30) deformiert werden kann.

The invention relates to an orthodontic appliance (10) for correction of malocclusion in a patient. The appliance (10) comprises a first support (11) configured to anchor to a first jaw, and a second support (12) configured to anchor to a second jaw. The at least one of the first support (11) or the second support (12) of the appliance (10) comprises a sliding surface (20). The appliance further comprises a counter element (30) coupled to, or couplable to, the other of the first support (11) or the second support (12) such that it is positioned opposite the sliding surface (20). The counter element (30) has at least one ramp surface (31) forming a slideway for the sliding surface (20).

A duel-fuel large diesel engine is proposed, comprising at least one cylinder having a combustion chamber, wherein a piston is arranged in the cylinder for a reciprocating movement between a top dead center position and a bottom dead center position, wherein the cylinder is provided with a first fuel injector (10) for injecting a first fuel into the combustion chamber, and a second fuel injector (20) for injecting a second fuel into the combustion chamber, wherein the first fuel is different from the second fuel, the large diesel engine further comprising a first fuel supply system (5) for supplying the first fuel to the cylinder and a second fuel supply system (7) for supplying the second fuel to a fuel distribution system (6), wherein the fuel distribution system (6) is configured to deliver the second fuel from the second fuel supply system (7) to the second fuel injector (20). A purge line (9) is provided connecting the first fuel supply system (5) to the fuel distribution system (6), wherein a switching member (8) is provided for opening and closing a flow connection through the purge line (9). Furthermore, a method for operating such an engine is proposed.

Ein Fahrwerk (100), insbesondere ein Niederflurfahrwerk, für ein Schienenfahrzeug, insbesondere für eine Strassenbahn, umfasst mindestens vier Räder (4) welche je eine Radrotationsachse (R) aufweisen. Je zwei gegenüberliegende Räder (4), die dieselbe Radrotationsachse (R) aufweisen, sind über eine Kupplung (11), welche eine Kupplungsrotationsachse (K) aufweist, verbindbar oder verbunden. Die Radrotationsachsen (R) und die Kupplungsrotationsachse (K) sind verschieden, insbesondere parallel. Es handelt sich um eine aktive Kupplung (11).

Kapsel zur Getränkezubereitung umfassend ein Kernmaterial und eine Hülle, wobei das Kernmaterial kristallisierbare Stoffe enthält. Die Hülle umfasst einen Kristallisationsverzögerer und/oder die Hülle ist hydrophobiert.