Abstract: The invention is a device for reducing pressure surge, comprising a container having an inner space which container has a connection opening (28) for connecting a pipe member being suitable for flowing fluid, a piston member (14) dividing the inner space of the container into a fluid space (20) being in fluid flow connection with the connection opening (28) and a gas space (30), and being movable along a piston displacement axis, an elastic element being arranged in the gas space (30), being supported against the piston member (14) and undergoing elastic deformation in case the piston member (14) is displaced along the piston displacement axis, and a throttle valve (60) being in fluid flow connection with the gas space (30) at any position of the piston member (14), being arranged to connect the gas space (30) and the space surrounding the container, and allowing a continuous gas flow in both directions.

Abstract: Valve arrangement for ensuring different amount of medium flow-through comprising at least two chambers (6,7) separated by a limiting wall (3) provided with a through-opening (1). An insertion piece (2) in the through-opening (1) is able to move transversally and the cross-section of its elongated middle portion (4) corresponds to that of the through-opening (1). At least at one end of the insertion piece (2) a closing head (5) is provided. A form-fitting (8) between the closing head (5) and the limiting wall (3) ensures a first closed state thereby a first amount of flow-through from a chamber (6) being on one side of the through-opening (1) to the chamber (7) being on the other side of it when the longitudinal movement of the insertion piece (2) is limited as the closing head (5) abuts against the limiting wall (3) at the through-opening (1).

Abstract: Valve arrangement for ensuring different amount of medium flow-through comprising at least two chambers (6,7) separated by a limiting wall (3) provided with a through-opening (1). An insertion piece (2) in the through-opening (1) is able to move transversally and the cross-section of its elongated middle portion (4) corresponds to that of the through-opening (1). At least at one end of the insertion piece (2) a closing head (5) is provided. A form-fitting (8) between the closing head (5) and the limiting wall (3) ensures a first closed state thereby a first amount of flow-through from a chamber (6) being on one side of the through-opening (1) to the chamber (7) being on the other side of it when the longitudinal movement of the insertion piece (2) is limited as the closing head (5) abuts against the limiting wall (3) at the through-opening (1).

Abstract: Auxiliary valve controlled self-cleaning main valve with mechanical operating means. The valve body (1) of the main valve has an inlet (2) and an outlet (3) interconnected through a flow-through opening, and a movable piston (6) having a main closing element (8) at one of its sides and a brake O-ring (9) at its other side. In the control chamber (5) an auxiliary valve (4) with a control valve stem (7) is provided. Between the piston (6) and the auxiliary valve (4) a compressible spring (12) is positioned. The mechanical operating means is provided with a wedge travel path and adapted to press the control valve stem (7) when force is applied externally and to keep it pressed in without applying external force, further it is adapted to release it when force is applied externally and to keep it released without applying external force.

Abstract: The pushbutton mechanism comprises a lower part (1) and a cover (2) which are connected to each other and together constitute a house; a push bar (3) being in contact with the cover (2) and passing through an opening (5) in the lower part (1) and protruding out from that; an activation surface being on the cover (2); a biasing spring (4) between the cover (2) and the lower part (1) providing mechanic bias at the initial position of the pushbutton mechanism; and the cover (2) is able to move from its initial position when approaching relatively to the lower part (1) in response to an external pressing force. The cover (2) is formed as a single piece and is attached to the lower part (1) so that it is movable to an angled position compared to its initial position, the angled position of the cover (2) and thus that part of the displaced push bar (3) protruding out of the lower part (1) is depending on the point of exertion the pressing force within the activation surface.

Abstract: The invention relates to a gravity operated mechanical flushing apparatus, which is operated without any external power source. A weight sensing element (1) provided with a tank (T) contains a component part (8) able to move along a vertical path against a spring force and a controlled feeder valve (5) coupled to a water supply system. The weight sensing element (1) has at its lower end an output (6) able to move vertically causing a mechanical operating event, said output (6) is coupled to a ratchet mechanism (3) through a coupling transmission (2). The ratchet mechanism (3) is able to transmit every second mechanical operating event presented by said output (6) and said transmission (2) to a control element of said controlled feeder valve (5) by means of a further transmission (4) in order to transmit an activating mechanical movement.

Abstract: Transcorporal delivery system and method for valve replacement surgery that is minimally invasive.

Abstract: The invention relates to a gravity operated mechanical flushing apparatus, which is operated without any external power source. A weight sensing element (1) provided with a tank (T) contains a component part (8) able to move along a vertical path against a spring force and a controlled feeder valve (5) coupled to a water supply system. The weight sensing element (1) has at its lower end an output (6) able to move vertically causing a mechanical operating event, said output (6) is coupled to a ratchet mechanism (3) through a coupling transmission (2). The ratchet mechanism (3) is able to transmit every second mechanical operating event presented by said output (6) and said transmission (2) to a control element of said controlled feeder valve (5) by means of a further transmission (4) in order to transmit an activating mechanical movement.

Abstract: Control valve with profiled packing element for making bidirectional flow-through with asymmetric intensity possible in a flow area. The packing element (1) has a first surface which can be abutted against a second surface in the valve housing (2). The packing element (1) has a first position in which said first surface (3) and said second surface (4) abut against one another, and a second position in which said first surface (3) and said second surface (4) are distant from one another. At least one of the surfaces (3, 4) is provided with a damage (5) by means of which when said packing element (1) is in its first position a first cross-section of flow is ensured between said abutting first and second surfaces (3, 4), which is smaller than a second cross-section of flow ensured by said packing element (1) when it is in its second position.

Abstract: The pushbutton mechanism comprises a lower part (1) and a cover (2) which are connected to each other and together constitute a house; a push bar (3) being in contact with the cover (2) and passing through an opening (5) in the lower part (1) and protruding out from that; an activation surface being on the cover (2); a biasing spring (4) between the cover (2) and the lower part (1) providing mechanic bias at the initial position of the pushbutton mechanism; and the cover (2) is able to move from its initial position when approaching relatively to the lower part (1) in response to an external pressing force. The cover (2) is formed as a single piece and is attached to the lower part (1) so that it is movable to an angled position compared to its initial position, the angled position of the cover (2) and thus that part of the displaced push bar (3) protruding out of the lower part (1) is depending on the point of exertion the pressing force within the activation surface.

Abstract: Universal impact-hinder device, comprising a body (1); a guiding pin (4) arranged at the closed first end of an inside cylindrical cavity of the body (1), a spring (7) on the guiding pin (4); a ring (5) at the opposite end of the cavity; and a piston having a T-shaped head and an inside cavity in which the spring (7) is supported, which piston can move until the ring (5), while the guiding pin (4) is within the inside cavity of the piston. The T-shaped head is provided with a groove and a movable O-ring (6) within that, having two end positions in the groove. In first end position a surface of the groove having artificial damages (31) and the contacting O-ring (6) determine a first flow-through capacity, in second end position an orifice (21) between the cavity of the body and the groove determines a greater second flow-through capacity.

Abstract: A water heater arrangement comprising a gas-operated water heater device (1) that has an cold water inlet pipeline (2) and an hot water outlet pipeline (3), and which further comprises a storage type electric water heater (4) inserted serially into the hot water outlet pipeline (3), and which is equipped with a thermostat (5). In an embodiment it absorbs and utilizes the waste heat of the gas-operated water heater device (1).

Abstract: A turntable for vertical support of substantially horizontal loaded surfaces, which has an upper and a lower half, between that it includes a vertical rotatable guiding element. A braking element (6) is located within the guiding element (3), which limits the vertical downward movement of the horizontal surface to a given speed, and the guiding element (3) includes a threaded part (4) that changes the vertical downward movement to rotating motion. The upper half (1) during its downward movement is connected to the lower half (2) by a mechanical coupling for rotation transfer by engagement into the threaded part (4). The braking element (6) is allowing backward movement of the upper half (1) relatively to the lower half (2) substantially without braking after expiry of the loading. The upper half (2) during its upward movement is connected to the lower half (2) without mechanical coupling for rotation transfer.

Abstract: Control valve with profiled packing element for making bidirectional flow-through with asymmetric intensity possible in a flow area. The packing element (1) has a first surface which can be abutted against a second surface in the valve housing (2). The packing element (1) has a first position in which said first surface (3) and said second surface (4) abut against one another, and a second position in which said first surface (3) and said second surface (4) are distant from one another. At least one of the surfaces (3, 4) is provided with a damage (5) by means of which when said packing element (1) is in its first position a first cross-section of flow is ensured between said abutting first and second surfaces (3, 4), which is smaller than a second cross-section of flow ensured by said packing element (1) when it is in its second position.

Abstract: Universal impact-hinder device, comprising a body (1); a guiding pin (4) arranged at the closed first end of an inside cylindrical cavity of the body (1), a spring (7) on the guiding pin (4); a ring (5) at the opposite end of the cavity; and a piston having T-shaped head and an inside cavity in which the spring (7) is supported, which piston can move until the ring (5), while the guiding pin (4) is within the inside cavity of the piston. The T-shaped head is provided with a groove and a movable O-ring (6) within that, having two end positions in the groove. In first end position a surface of the groove having artificial damages (31) and the contacting O-ring (6) determine a first flow-through capacity, in second end position an orifice (21) between the cavity of the body and the groove determines a greater second flow-through capacity.

Abstract: Piston structure having a first side and a second side and in a recess (6) formed in an outer portion of the piston (1, 22) a resilient sealing element (5, 11, 21) is placed. The axial width and at least in some places the radial depth of the recess (6) are greater than the cross-sectional diameter of the sealing element (5, 11, 21) which is able to move, owing to the pressure difference of the two sides, between a first and a second position, thereby alternately ensuring a cumulated cross-sectional area at most A1, and a cross-sectional area A0, or a cumulated cross-sectional area at most A2, and a cross-sectional area A0. A1 and A2 are substantially smaller than A0. The invention further relates to a liquid feeder valve including this piston structure for allowing liquid flow-through in a certain amount or for a period of time from a pressurized source of liquid.

Abstract: Piston structure having a first side and a second side and in a recess (6) formed in an outer portion of the piston (1, 22) a resilient sealing element (5, 11, 21) is placed. The axial width and at least in some places the radial depth of the recess (6) are greater than the cross-sectional diameter of the sealing element (5, 11, 21) which is able to move, owing to the pressure difference of the two sides, between a first and a second position, thereby alternately ensuring a cumulated cross-sectional area at most A1, and a cross-sectional area A0, or a cumulated cross-sectional area at most A2, and a cross-sectional area A0. A1 and A2 are substantially smaller than A0. The invention further relates to a liquid feeder valve including this piston structure for allowing liquid flow-through in a certain amount or for a period of time from a pressurized source of liquid.

Abstract: The balance float (1) controlled valve assembly of the invention includes at least one valve means (2), a liquid receptacle (4), and at least one balance float (1) connected via a link (5) to a rotatable free end of a pivoted balance lever (31). The valve means (2) comprises a closure member having a valve shaft (25) that is slideably guided between a first end position and a second end position. The valve assembly further includes a mechanism (3) that is arranged between the balance lever (31) and the valve shaft (25) of the closure member of the valve means (2). The mechanism (3) is designed so as to having and staying in an approximately self-locked state when the valve shaft (25) of the closure member of the valve means (2) stays in its first end position.