Abstract: Improved optical coherence tomography systems and methods to measure thickness of the retina are presented. The systems may be compact, handheld, provide in-home monitoring, allow the patient to measure himself or herself, and be robust enough to be dropped while still measuring the retina reliably.

Abstract: An apparatus for encoding a first channel and a second channel of an audio input signal including two or more channels to obtain an encoded audio signal according to an embodiment includes a normalizer configured to determine a normalization value for the audio input signal depending on the first channel of the audio input signal and depending on the second channel of the audio input signal. Moreover, the apparatus includes an encoding unit configured to generate a processed audio signal having a first channel and a second channel. The encoding unit is configured to encode the processed audio signal to obtain the encoded audio signal.

Abstract: The invention presents a firefighting system for an extractor duct, in particular of a cooking area, having a duct, which has an inlet side and an outlet side, which is spaced apart from the inlet side, and defines a direction of the extracted air flow from the inlet side to the outlet side. The invention also proposes that at least one spray mist nozzle, preferably a plurality of spray mist nozzles, are installed in the firefighting system, said spray mist nozzles each having a plurality of separate spray mist outlets, wherein the spray mist outlets each have a predetermined K-factor and are oriented at an angle to one another.

Abstract: The invention relates to a spray mist nozzle, in particular an open high-pressure spray mist nozzle for firefighting systems, having a housing which is configured with an extinguishing fluid inlet and is configured with multiple recesses for receiving an exchangeable nozzle insert, such a nozzle insert being inserted into one, multiple/plural or all the recesses. The nozzle insert has a main body with a longitudinal axis that has in the longitudinal axis a spray mist outlet for the extinguishing fluid. An exchangeable swirl body is arranged in the main body and is configured to swirl the extinguishing fluid prior to the latter exiting from the spray mist outlet. The spray mist outlet has a minimum opening cross section, and has a widened exit cross section downstream of the minimum opening cross section, wherein a transition from the minimum opening cross section to the exit cross section runs along a convexly curved surface.

Abstract: A protective cover for a fire protection sprinkler includes a pair of sidewalls and an orthogonal wall structure connected to an upper edge of each of the pair of sidewalls. The orthogonal wall structure including a slot therein that opens along an edge of the orthogonal wall structure in alignment with an opening between the pair of sidewalls. The slot including a pair of side edges including a pair of opposing arcuate regions adapted to engage a deflector mounting boss of a fire protection sprinkler. An arcuate sidewall extends from the orthogonal wall structure and an upper wall extending inward from an upper edge of the arcuate sidewall and opposing the orthogonal wall structure to define a cavity that is adapted for receiving a deflector of a fire protection sprinkler.

Abstract: The present invention relates to a protective cap for an extinguishing nozzle, in particular a sprinkler nozzle, which has at least a nozzle main body with a nozzle outlet, with a cap main body, and a cap neck which is arranged on the cap main body, the cap main body having a force transmission section for bearing in sections against a nozzle main body of the extinguishing nozzle in a force-transmitting, preferably positively locking manner, and the protective cap, in particular the cap neck, being set up to mechanically shield the nozzle outlet of the extinguishing nozzle, the cap main body having an outer contour with one or more action surfaces for attaching a tool.

Abstract: The invention relates to a sprinkler housing (50) for a sprinkler (1), in particular for operating pressures above 16 bar, comprising a fluid channel (12) which is provided in the sprinkler housing (50) and has a fluid inlet (10) and at least one fluid outlet (8), a closure element (4), which is movable from a blocking position into a release position in a release direction (A), wherein the closure element (4) closes the fluid channel (12) in the blocking position and releases same in the release position, a sealing element (5), which is mounted on the closure element (4) and is designed to close the fluid channel (12) in a fluid-tight manner in the blocking position, wherein a protective chamber in which the sealing element (5) is arranged is defined between the closure element (4) and the recess (17) in the release position.

Abstract: A sprinkler (1), includes a sprinkler housing, a fluid channel which is provided in the sprinkler housing and has a fluid inlet (10) and at least one fluid outlet (8), a closure element (4), which is movable from a blocking position into a release position, wherein the closure element (4) closes the fluid channel in the blocking position and releases same in the release position, a thermally activatable triggering element (25), which keeps the closure element (4) in the blocking position until thermally activated, and a sealing element (5), which is arranged between the sprinkler housing and the closure element (4) and is designed to close the fluid channel in a fluid-tight manner in the blocking position. A sealing element (5) is radially and axially compressed in the blocking position in order to apply the sealing effect.

Abstract: A method and a device for separating a wound tube (1) which includes interlocking windings (11, 12, 13, 14) of a metal strip (2) are provided, the wound tube (1) is welded in a predetermined axial region (10) and is then severed within the region (10) in a radial plane (6). The method furthermore defines that the wound tube (1) is axially compressed in the predetermined region prior to welding, such that the windings (11, 12, 13, 14) bear against one another in the region (10), and the welding is carried out along a predetermined number of turns (11, 12) in the region (10).

Abstract: The present invention relates to a protective cap for an extinguishing nozzle, in particular a sprinkler nozzle, which has at least a nozzle main body with a nozzle outlet, with a cap main body, and a cap neck which is arranged on the cap main body, the cap main body having a force transmission section for bearing in sections against a nozzle main body of the extinguishing nozzle in a force-transmitting, preferably positively locking manner, and the protective cap, in particular the cap neck, being set up to mechanically shield the nozzle outlet of the extinguishing nozzle, the cap main body having an outer contour with one or more action surfaces for attaching a tool.

Abstract: A sprinkler (1), includes a sprinkler housing, a fluid channel which is provided in the sprinkler housing and has a fluid inlet (10) and at least one fluid outlet (8), a closure element (4), which is movable from a blocking position into a release position, wherein the closure element (4) closes the fluid channel in the blocking position and releases same in the release position, a thermally activatable triggering element (25), which keeps the closure element (4) in the blocking position until thermally activated, and a sealing element (5), which is arranged between the sprinkler housing and the closure element (4) and is designed to close the fluid channel in a fluid-tight manner in the blocking position. A sealing element (5) is radially and axially compressed in the blocking position in order to apply the sealing effect.

Abstract: The invention relates to a sprinkler housing (50) for a sprinkler (1), in particular for operating pressures above 16 bar, comprising a fluid channel (12) which is provided in the sprinkler housing (50) and has a fluid inlet (10) and at least one fluid outlet (8), a closure element (4), which is movable from a blocking position into a release position in a release direction (A), wherein the closure element (4) closes the fluid channel (12) in the blocking position and releases same in the release position, a sealing element (5), which is mounted on the closure element (4) and is designed to close the fluid channel (12) in a fluid-tight manner in the blocking position. According to the invention, it is proposed that the sprinkler housing (50) has a recess (17), through which the closure element (4) extends at least in the release position, wherein a protective chamber in which the sealing element (5) is arranged is defined between the closure element (4) and the recess (17) in the release position.

Abstract: A protective cover for a fire protection sprinkler includes a pair of sidewalls and an orthogonal wall structure connected to an upper edge of each of the pair of sidewalls. The orthogonal wall structure including a slot therein that opens along an edge of the orthogonal wall structure in alignment with an opening between the pair of sidewalls. The slot including a pair of side edges including a pair of opposing arcuate regions adapted to engage a deflector mounting boss of a fire protection sprinkler. An arcuate sidewall extends from the orthogonal wall structure and an upper wall extending inward from an upper edge of the arcuate sidewall and opposing the orthogonal wall structure to define a cavity that is adapted for receiving a deflector of a fire protection sprinkler.

Abstract: A method and a device for separating a wound tube (1) which includes interlocking windings (11, 12, 13, 14) of a metal strip (2) are provided, the wound tube (1) is welded in a predetermined axial region (10) and is then severed within the region (10) in a radial plane (6). The method furthermore defines that the wound tube (1) is axially compressed in the predetermined region prior to welding, such that the windings (11, 12, 13, 14) bear against one another in the region (10), and the welding is carried out along a predetermined number of turns (11, 12) in the region (10).