Abstract: An intermediate product for the production of a surface heat exchanger, in particular for building room air conditioning, including a support plate, on one side of which a tube system for conducting a medium is attached and on the other side of which a prefabricated adhesive tape having a manually removable outer protective layer is arranged, wherein the adhesive tape is free of any support.

Abstract: A heat exchanger, including a heat exchanger tube for guiding a first medium in its interior, and also at least one connection for a second medium, wherein the region around the heat exchanger tube is provided by an open-pored, in particular solid, material, preferably a body of such a material, into which the second medium in particular can enter.

Abstract: A device for heat recovery from service water, including at least one, in particular integrally materially bonded, heat-exchanger tube and a body having a substantially surface-like/laminar, in particular plate-like, region, wherein the at least one heat-exchanger tube, in particular made of copper or stainless steel, is oriented along a plane that is not orthogonal to, in particular is parallel to, the main plane of extension of the region.

Abstract: A finned tube having a tube main body, on the outside of which, in particular separate or integral, fins are arranged, preferably circumferentially, wherein the fins and/or the tube main body are of a multi-layer material.

Abstract: An intermediate product for the production of a surface heat exchanger, in particular for building room air conditioning, including a support plate, on one side of which a tube system for conducting a medium is attached and on the other side of which a prefabricated adhesive tape having a manually removable outer protective layer is arranged, wherein the adhesive tape is free of any support.

Abstract: A method for producing ribbed pipes, in which a first pipe base body is ribbed on its outer side, in particular helically, with a first band, to which end the first band is secured to the first pipe base body using a first laser beam. While the first band is being secured to the first pipe base body using the first laser beam, a second pipe base body is ribbed on its outer side with a second band, to which end the second band is secured to the second pipe base body using a second laser beam, wherein the first and second laser beams come from the same laser source.

Abstract: Described is an exhaust-gas switch, in particular for trucks, having a housing that has an inlet, a first outlet and a second outlet, having a shaft led out from the housing, and having a valve flap arranged in the housing that is pivotable about a geometric pivot axis by means of the shaft between a first position and a second position, the valve flap having a blocking portion that in the first position blocks the first outlet and in the second position blocks the second outlet. According to this disclosure, provision is made such that the valve flap bears a counterweight to the blocking portion, the geometric pivot axis being arranged between the blocking portion and the counterweight.

Abstract: An implantable device for improving or remedying valvular incompetence, comprising a sealing body and at least one anchoring element (2) fastened thereto, by means of which the sealing body is able to be fastened in the heart, preferably in the atrium of the heart, wherein the sealing body comprises at least one cavity (6), which is also able to be filled with a fluid after implanting the sealing body and preferably not able to be emptied independently, and wherein, furthermore preferably, the sealing body remains expanded with constant volume during the cardiac phases as a result of the filling, characterized in that a plurality of cavities (6) are disposed about a main body (1) of the sealing body lying in the direction of longitudinal extent of the sealing body, or a single cavity (6) surrounds a main body (1) of the sealing body lying in the direction of longitudinal extent of the sealing body, wherein the main body (1) is embodied as a tube which is able to be bent out of the linear extent thereof and in

Abstract: Described is an exhaust-gas switch, in particular for trucks, having a housing that has an inlet, a first outlet and a second outlet, having a shaft led out from the housing, and having a valve flap arranged in the housing that is pivotable about a geometric pivot axis by means of the shaft between a first position and a second position, the valve flap having a blocking portion that in the first position blocks the first outlet and in the second position blocks the second outlet. According to this disclosure, provision is made such that the valve flap bears a counterweight to the blocking portion, the geometric pivot axis being arranged between the blocking portion and the counterweight.

Abstract: The disclosure relates to a pump for implantation into a vessel or a heart, with the pump being introduced in a first state into the vessel or heart in order then be functionally changed over to a second state in the vessel or in the heart, having a drive part and a delivery part, where the drive part is not functional in the first state and becomes functional as a result of the changeover to the second state, wherein the drive part has an electric motor, where the electric motor is embodied as a wet rotor, and where, in the first state, the rotor of the electric motor and the stator of the electric motor are arranged so as to be separate from one another, and where the rotor of the electric motor is moved into the stator of the electric motor in the second state, where the rotor can drive the delivery part in the second state.

Abstract: A hot gas valve has a housing, in which a gas duct is formed with an inlet and an outlet, and a valve device for controlling the fluid flow through the gas duct. The housing has at least one cooling duct for liquid cooling of the housing, wherein the gas duct is shielded with respect to the housing by means of a thermal shield, which consists of a material which has a greater thermal stability than the material of which the housing consists. The valve device has a closure body situated in the gas duct, which closure body is held on a valve shaft mounted in the housing by means of at least one bearing. The bearing may consists of a material having good thermal conductivity. The valve shaft is sealed by an elastomer shaft sealing ring on the side of the bearing facing away from the gas duct.

Abstract: An implantable device for improving or remedying valvular incompetence, comprising a sealing body and at least one anchoring element (2) fastened thereto, by means of which the sealing body is able to be fastened in the heart, preferably in the atrium of the heart, wherein the sealing body comprises at least one cavity (6), which is also able to be filled with a fluid after implanting the sealing body and preferably not able to be emptied independently, and wherein, furthermore preferably, the sealing body remains expanded with constant volume during the cardiac phases as a result of the filling, characterized in that a plurality of cavities (6) are disposed about a main body (1) of the sealing body lying in the direction of longitudinal extent of the sealing body, or a single cavity (6) surrounds a main body (1) of the sealing body lying in the direction of longitudinal extent of the sealing body, wherein the main body (1) is embodied as a tube which is able to be bent out of the linear extent thereof and in

Abstract: The invention relates to an implantable device for improving or treating a heart valve insufficiency, comprising a closure body (1) and at least one anchoring element fastened thereto, by means of which the closure body (1) can be fastened in the heart, preferably in the atrium of the heart, in which the anchoring element comprises a plurality of contact strips (2) extending between the closure body (1) and a shared connecting element (3) which is spaced from the closure body (1), wherein, due to a shape change of the contact strips (2), the connecting element (3) can be brought into a first and a second position each spaced from the closure body, wherein, in the first position, the connecting element (3) is spaced farther apart from the closure body (1) than in the second position, and in the second position, the connecting element (3) is arranged between the contact strips (2).

Abstract: A system for inserting an implant at an implantation site has a tubular catheter through which the implant to be installed is transported in a longitudinal travel direction to the implantation site. A ring is spaced forward in the direction to the implantation site from the implant and is longitudinally coupled to the implant. A guide wire in the tubular catheter also can pass through the ring. A push tube in the tubular catheter the guide wire is slidable on the guide wire longitudinally forward toward the implantation site and has a front end closer to the implantation site and for which the ring forms an impenetrable stop.

Abstract: The disclosure relates to a pump for implantation into a vessel or a heart, with the pump being introduced in a first state into the vessel or heart in order then be functionally changed over to a second state in the vessel or in the heart, having a drive part and a delivery part, where the drive part is not functional in the first state and becomes functional as a result of the changeover to the second state, wherein the drive part has an electric motor, where the electric motor is embodied as a wet rotor, and where, in the first state, the rotor of the electric motor and the stator of the electric motor are arranged so as to be separate from one another, and where the rotor of the electric motor is moved into the stator of the electric motor in the second state, where the rotor can drive the delivery part in the second state.

Abstract: A hot gas valve has a housing, in which a gas duct is formed with an inlet and an outlet, and a valve device for controlling the fluid flow through the gas duct. The housing has at least one cooling duct for liquid cooling of the housing, wherein the gas duct is shielded with respect to the housing by means of a thermal shield, which consists of a material which has a greater thermal stability than the material of which the housing consists. The valve device has a closure body situated in the gas duct, which closure body is held on a valve shaft mounted in the housing by means of at least one bearing. The bearing may consists of a material having good thermal conductivity. The valve shaft is sealed by an elastomer shaft sealing ring on the side of the bearing facing away from the gas duct.

Abstract: The invention relates to an implantable device for improving or rectifying a heart valve insufficiency, comprising a closure element (1) which can be positioned in the passage area of a heart valve, in particular in the area between an atrium (2) and a ventricle (3) of the heart, and which has an upper, upstream end (1a) and a lower, downstream end (1b), wherein at least one contact strip (4) is arranged at at least one of the ends (1a, 1b) of the closure element (1), which extends away from the closure element (1) and is led back to the closure element (1) in at least one loop, wherein at least a part of the extent of the strip can be placed against the inner wall of the heart.