Abstract: A valve operating means defined by the following features: a slider supported in axially displaceable manner in a housing and linked by an actuation segment to the valve, a first biasing spring configured in the housing and pre-stressing the slider against a first stop, an expansible element configured in the housing and being displaceably supported in approximately coaxial manner relative to the slider between a second and a third stop, a second biasing spring acting on the expansible element and prestressing said element against the second stop, said configuration allowing cooperation between the expansible element's drive pin and the slider, a heater associated to the expansible element, a heat dissipating element associated with the expansible element and cooling the expansible element when latter rests against the third stop, the force exerted by the first biasing spring being larger than that of the second biasing spring.

Abstract: A thermostatted valve used in an internal combustion engine and comprising a housing fitted with at least three ports, namely an engine port to communicate with the engine cooling system, a radiator port to communicate with the radiator, and a bypass port to communicate with a bypass, further comprising a hollow, spherical valve element supported pivotably about a pivot axis within the housing between two end positions, said valve element being fitted with at least two apertures of which one permanently communicates with the engine port and the other is situated in a plane substantially perpendicular to said pivot axis, further comprising a temperature sensor controlled valve element drive, characterized in that the axes of all ports are configured in planes that are approximately perpendicular to the pivot axis of the valve element in that the valve element is approximately a spherical segment or a laminar sphere of which the open side communicates permanently with the engine port, further that the valve ele

Abstract: A cooling system for a combustion engine having a cooling passage system in an engine block comprising a main cooler HWK which is arranged in a cycle with the cooling passage system of the combustion engine, a water pump and a first thermostat TH1 in said cycle, a hot water heat exchanger HWT which is connected to the water pump 12 through a bypass and a bypass valve, a second thermostat TH2 in the bypass passage, the opening temperature of the thermostat valve of the second thermostat TH2 is significantly lower than the opening temperature of the thermostat valve of the first thermostat TH1, the thermostats being arranged such that upon closed thermostat valve B of the second thermostat TH2 below its opening temperature a minimum amount of water flows through the cooling passage system through the heat exchanger HWT, upon opened thermostat valve B of the second thermostat TH2 a larger amount of water flows through the cooling passage system from its opening temperature on and upon the opening temperature of

Abstract: Thermostat valve arrangement for the cooling circuit of an internal combustion engine in which a main valve member of a main valve is movably mounted in a housing which may be pressed against a main valve seat by a spring, in which a bypass valve member of a bypass valve is further provided which co-operates with a bypass valve seat in the housing and in which a first section of an expansion element (DWE) co-operates with an abutment fixed to the housing and a second section co-operates with the main valve member and the bypass valve member such that the main valve or bypass valve is selectively closed and/or opened, in order to produce the cooling circuit of the internal combustion engine by means of a radiator or a bypass, the main valve seat being formed by a conical seat surface in the housing, the main valve member forming a valve unit with an axially spaced piston-shaped bypass valve member, which valve unit receives the expansion element in an axial recess in one direction in an axially secure manner,

Abstract: A device for measuring at least one of a level and a temperature of a liquid in a container includes a resistor arrangement adapted to be immersed in the liquid. An immersed length of the resistor arrangement in the liquid corresponds to the level of the liquid in the container. The resistor arrangement includes upper, middle and lower temperature-dependent elongated resistor elements connected in series or in parallel. Each resistor element has an uniform resistance per unit length along a length thereof. The upper and lower resistor elements are shorter than the middle resistor element. A power source is connectable to the resistor arrangement. Voltage drops across or currents flowing through the resistor elements are measured. A microprocessor is arranged to calculate the immersed length of the resistor arrangement or the temperature of the liquid from predetermined lengths of the resistor elements and from the measured voltages or currents.

Abstract: A cooling system for a combustion engine having a cooling passage system in an engine block comprising a main cooler HWK which is arranged in a cycle with the cooling passage system of the combustion engine, a water pump and a first thermostat TH1 in said cycle, a hot water heat exchanger HWT which is connected to the water pump 12 through a bypass and a bypass valve, a second thermostat TH2 in the bypass passage, the opening temperature of the thermostat valve of the second thermostat TH2 is significantly lower than the opening temperature of the thermostat valve of the first thermostat TH1, the thermostats being arranged such that upon closed thermostat valve B of the second thermostat TH2 below its opening temperature a minimum amount of water flows through the cooling passage system through the heat exchanger HWT, upon opened thermostat valve B of the second thermostat TH2 a larger amount of water flows through the cooling passage system from its opening temperature on and upon the opening temperature of

Abstract: A thermostat valve for a cooling system of a combustion engine, comprising a disc-shaped valve member, having a sealing portion and biased by a spring against an annular valve seat provided in a valve housing, a thermal extension element (DWE) within the valve housing which acts on the valve member opposite to the valve spring, characterized in that the valve member includes two separate parts, the first part being an annular member having an outer annular sealing portion and an inner annular sealing portion, the outer sealing portion cooperating with the valve seat and the second part being a plug-shaped member and extending through the annular member, the plug-shaped member having an outer annular sealing portion which in the closed position of the plug-shaped member cooperates with the inner sealing portion of the annular member, the plug-shaped member cooperating with the thermal extension element (DWE) and being structured such that upon an initial movement of the plug-shaped member by the thermal extens

Abstract: A device for measuring the level and/or the temperature of a liquid in a container, characterised by the following features: a linear resistor arrangement adapted to be immersed approximately vertically into the liquid (12), the resistor arrangement includes three serious connected resistor portions, with each resistor portion including at least one temperature depending elongated resistor element, the resistor portions having a resistance per unit length which is uniform about their length, the resistor portions or resistor elements, respectively have a pre-determined length with the upper and lower resistor portion being short relative to the intermediate portion, the resistor arrangement is connected to a voltage source, a voltage meter measures the voltages of the resistor portions, a computer calculates the immersed length of the resistor arrangement or the temperature of the liquid, respectively from the dimensions of the resistor portions and the resistor elements and from the measured voltages by m

Abstract: Apparatus for measuring in continuous manner, i.e.