Nordic Patent Service A/S

An actuator system (1) configured to move a skylight element (2) between a closed position, a fully open position, and partially open positions when in a default operating mode (M1), and to one predefined position of said partially open positions when in a temporary operating mode (M2). The actuator system (1) comprises an electric motor (3), an actuator (4) connected to said electric motor (3) and to said skylight element (2), and a control assembly (5) configured to receive and/or process environmental data (D), and determine if said environmental data (D) is indicative of a predefined environmental condition (C). If said environmental data (D) is indicative of said predefined environmental condition (C), said actuator system (1) operates in said temporary operating mode (M2), and if said environmental data (D) is not indicative of said predefined environmental condition (C), said actuator system (1) operates in said default operating mode (M1).

A fuel valve (30) for injection of fuel into a large two-stroke turbocharged uniflow scavenged internal combustion engine with an axially displaceable valve needle (35) cooperating with a valve seat (36) in the valve body and cylindrical distal section (39) of the valve needle (35) in a nozzle (40), the cylindrical distal section (39) being provided with a sealing ring (52).

Described is a fuel valve (30) for injection of fuel into a combustion chamber (14) of a large turbocharged two-stoke uniflow crosshead internal combustion engine, said fuel valve (30) comprising an elongated fuel valve housing (32) with a longitudinal axis (X), a rear end (31) and a front end (33), an elongated nozzle (40) having a bore (50) and a closed end (44), which bore (50) opens into at least one through-going opening (45), said nozzle (40) being arranged at the front end of said housing (32), an axially displaceable valve needle (35) with a hollow cut-off shaft (37) received axially displaceable between a open position and a closed position in said bore (50) in the nozzle (40) for opening and closing access to said at least one opening (45), said cut-off shaft (37) is provided with a plurality of holes (49) so as to connect said at least one opening (45) in the nozzle (40) to the interior of the hollow cut-off shaft (37) in said open position of the hollow cut-off shaft (37) and to disconnect said at least one opening (45) in the nozzle from the interior of the hollow cut-off shaft (37) in said closed position of the hollow cut-off shaft (37). The fuel valve (30) is peculiar in that said plurality of holes (49) in said cut-off shaft (37) have a total cross sectional area that is smaller than a total cross sectional area of said at least one opening (45). Hence, by providing the opening or openings (45) in the nozzle (40) with a larger total cross sectional area than the holes (49) in the cut-off shaft (37), said holes in the cut-off shaft are made to actual nozzle holes and the problems relating to development of cracks in the nozzle (40) are reduced.

A dental procedure simulator (1) is disclosed comprising a computer (80) configured to simulate a dental treatment, a parallel robot (40) providing haptic force feedback, and a handpiece (30) coupled to the robot by a mechanism offering multiple rotational degrees of freedom. A display screen (9) presents a virtual environment, the images of which are reflected to the user by a partially transparent reflective element (7) while simultaneously allowing direct viewing of a real workspace (W). This mixed-reality arrangement enables the user to see both virtual objects, including a virtual handpiece co-located with the real handpiece (30), and physical components such as phantom jaws (13, 14) or a phantom head (10). Sensors may detect movement and orientation of the handpiece and phantom jaws, allowing the virtual environment to be updated accordingly. The system supports realistic simulation through combined visual and haptic feedback and may additionally provide training using physical phantom teeth (22).

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The present invention relates to an artificial intelligence range hood which may rapidly and easily discharge cooking oil fumes and indoor polluted air by selectively opening or closing a movable intake and exhaust duct or an indoor polluted air intake and exhaust duct, may prevent industrial accidents in advance, such as lung cancer that may be caused by continuously sucking cooking oil fumes including various harmful substances by a reference amount or more, may automatically create a pleasant indoor air quality environment by significantly improving indoor air quality, may rapidly suck and discharge the cooking oil fumes by lowering the movable intake and exhaust duct to a portion where the cooking oil fumes are generated, and may rapidly discharge the cooking oil fumes by allowing the cooking oil fumes to sequentially pass through the movable intake and exhaust duct and a fixed intake and exhaust duct after the cooking oil fumes are collected into a cooking oil fume suction hole in a 360° lateral direction of an oil drip tray, thereby protecting the health of a cook.

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