Abstract: A thermostatic valve arrangement for a coolant control of an internal-combustion engine, having a thermostatic working element which is assigned to the coolant flow and the working piston of which is supported on an abutment which can be adjusted by an adjusting member. The adjusting member is arranged outside the coolant flow and is held in a receiving device which is constructed in one piece with a valve housing and is constructed of a plastic material. The adjusting member is detachably held by holding elements in the receiving device. Between the adjusting member and the working piston, transmitting devices are arranged which transmit the pressure forces and which form a sealing device sealing off the valve housing in the direction of the receiving device.

Abstract: In the case of a thermostatic valve for a coolant control of an internal-combustion engine, it is provided that a connecting element is provided which is made of a material having a low thermal conductivity so that a thermal uncoupling takes place between the valve housing part of the thermostatic valve and a thermostatic valve element which is mounted on it and is to be arranged outside the coolant flow.

Abstract: A pivotal electrical connector for connecting a shape memory alloy element in the form of a coil spring to a fixed member, the connector including a strip of electrically conductive material having a clip or a pair of legs for securing the connector to one of the coils of the element. A pair of holes may be provided in the strip through which the coil is threaded. A rotational connector is provided in the strip for engaging the fixed member.

Abstract: A shape memory actuator for controlling the position of a control member, such as a damper plate in a duct, the actuator including first and second shape memory elements each having an austenite phase transition temperature above which each element assumes a predetermined memory shape and a lower phase which forms when said element is stretched from the predetermined memory shape, the first and second elements being connected to move the control member in different directions when one or the other of the elements are heated to a temperature above its austenite phase transition temperature and an electrical circuit for selectively raising the temperature of one or the other of the elements. The control member may be held in a position between full open and full closed by holding mechanisms which connect the actuator to the control member.

Abstract: A valve construction and method of making the same are provided, the valve construction comprising a housing, a valve seat carried by the housing, a movable lever carried by the housing and having an opening passing through opposed sides thereof, a valve member for opening and closing the valve seat and having a stem projecting through the opening of the lever whereby the valve member is carried by the lever, and a tubular member disposed in the opening of the lever and telescopically receiving the stem of the valve member therein whereby the tubular member spaces the stem from the lever at the opening thereof.

Abstract: The specification discloses a thermostatic control device for controlling the flow of a pressurized fluid. A housing having a plurality of flow-through apertures encloses a valve which is movable between a seated and an open position. The valve is operable to be in contact with a valve seat located within the housing when in its seated position and to allow flow through the device in its open position. First and second openings in the housing and valve, respectively, are selectively opened and closed by means of bi-metallic discs operable to change shape upon reaching a predetermined temperature. The bi-metallic discs are disposed within the device so that below the predetermined temperature, the first opening in the housing is open and the second opening in the valve is closed whereby fluid flowing through the device causes the valve to move from its open to its seated position restricting flow through the device.

Abstract: A thermostatically controlled trap provided that one end of a valve pushrod comes in direct contact with a ball valve when the valve pushrod is subjected to axial motion by the expansion of a thermosensitive member caused by a change in the temperature of a fluid flowing through the trap.

Abstract: A steam trap having a thermostatically controlled bimetallic valve for discharging condensate from steam lines is disclosed. The steam trap has a housing having a fluid inlet port, a fluid outlet port, and valve means within said housing between the inlet port and the outlet port comprising a valve adapted to seat on a valve seat for controlling fluid flow through said steam trap from said inlet port to said outlet port and a bimetallic assembly responsive to temperature variations for controlling the opening and closing of said valve means.

Abstract: A thermally controlled damper construction for a gas fired combustion apparatus such as a furnace, water heater or the like, is described. The damper is pivotally mounted within the stack of the combustion apparatus for pivotal movement from a closed position to a full open position. A thermally responsive device is disposed in the stack on the upstream side of the damper for opening and closing the damper in response to predetermined temperatures. The thermally responsive device comprises a shaft mounted in the stack which extends thereacross and which has the damper rotatably mounted thereon. A helical bi-metal element embraces the shaft between the ends thereof and comprises first and second bi-metal members which are secured together in an end-to-end relationship.

Abstract: A steam trap is provided with a bimetallic control element disposed at the prepressure side and a locking element actuated by the bimetallic control element which is biased in the opening direction by the prepressure and which cooperates with a valve seat. The bimetallic control element is provided with at least two bimetallic spring disks which are serially connected in such a manner that when the locking element is open during the slow-speed stroke of the bimetallic spring disks, the stroke movement of the locking element is the sum of the slow-speed strokes of all of the bimetallic spring disks.

Abstract: A steam trap includes a housing having an inner chamber, a feed opening and a discharge opening disposed adjacent to one another and communicating with the inner chamber, and a control unit disposed in the chamber including at least one bimetallic plate, a locking member disposed at the low pressure end of the trap and secured to a valve spindle extending centrally through the bimetallic plate and having a cam mounted thereon for engagement with the bimetallic plate and a seat sleeve which defines a valve seat and an abutment for cooperative engagement with said locking member and bimetallic plate, respectively. The seat sleeve includes a feed bushing which, in cooperation with the valve spindle, defines a flow channel therebetween and the cam consists of a cap disposed over a free end of the feed bushing projecting above the bimetallic plate, on the latter of which the cap is supported.

Abstract: A bimetallic column for temperature detection operating devices such as a steam trap, comprising a guide tube secured at its one portion to a counter part of a control stem and slidably extending through a center hole of the bimetallic column and projecting out of the bimetallic column, the control stem slidably extending through the guide tube.

Abstract: A draft control arrangement for use with a gas-fired heating apparatus. The flow of waste gas through a draft hood of the apparatus is throttled by bimetal element means which responds to temperature change for reducing or enlarging the throttle area. Control means is provided for causing the rate of throttle area change during a certain phase of operation to vary from the rate of throttle area change during other phases of operation.

Abstract: In an embodiment thereof, the closure device comprises a leaf-type, planar, closure element pivotally coupled to a supporting shaft. The shaft is fixed in traverse of a fluid conduit, and the closure element is rotatable therewithin for opening and closing the conduit to fluid flow. Shape-memory alloy components are engaged with the element, and a bearing surface, to cause the element to move from an opened or closed position to the other thereof, or to some intermediate positioning for metered or damping fluid flow, in response to prescribed temperatures.

Abstract: A thermally responsive valve device comprises a body member having an inlet port and outlet ports, a first passage communication between the inlet port and one of the outlet ports, a second passage communication between the inlet port and the other of the outlet ports, a valve seat positioned in the both passages, a valve means movable into and out of engagement with the valve seat, a bimetal disc movable in response to variations in temperature to close and open the first passage and second passage simultaneously.

Abstract: A vent control arrangement for energy conservation having bimetallic damper elements mounted in a draft hood which forms an integral part of the heating apparatus. The bimetallic elements open and close the flow passage for vent gases from the combustion apparatus in response to temperature change. The vent control arrangement is designed for minimum resistance to the flow of vent gases when installed in the integral draft hood. A design without friction surfaces and without transfer of movements or signals between components is used. Opening time is minimized by closeness to the heat source and in one embodiment by alternate bimetal reeds of different initial tension, in other embodiments by alternate orientation, or by different flexivity of alternate bimetal reeds.

Abstract: A regulator valve having a balanced port construction is provided with a balanced piston design, the piston being operated under positive control in all valve positions. The piston regulates fluid flow through the valve. The piston is operatively connected to a heat motor, and the electrical energy input to the heat motor is used to adjust piston position. Because of the balanced piston design, valve operation is dependent solely upon electrical energy input to the heat motor, and precise control of a refrigeration system, for example, may be maintained.

Abstract: The combustion gases of a burner in a heating furnace are discharged to a vent through a draft hood having three ports. The first and second ports communicate with the furnace and the vent respectively and define a first flow path for combustion gases through the chamber of the hood. The third port is open to the ambient atmosphere and defines a second flow path for dilution air through the chamber. Separate temperature responsive, bimetallic elements sense the temperatures in the two paths and cause a vent damper to be moved toward and away from a position in which it closes the second port in response to the sensed temperatures to minimize the flow of dilution air. In a modified embodiment the draft hood is vertically elongate with the bimetallic elements positioned in a zone filling with hot products of combustion for minimizing the flow of dilution air and minimizing spillage of products of combustion during start-up and sudden changes in draft.

Abstract: An improved, dual function, thermal valve assembly has three ports and two passages connecting these three ports to a common chamber. The assembly employs two thermally responsive actuating members which are actuable to move a valve plug in the chamber at different temperatures to provide a first temperature region wherein the plug seals port one so that only ports two and three are in communication, a second temperature region wherein the plug does not seal any of the ports so that ports one, two, and three are in mutual communication, and a third temperature region wherein the plug seals port three so that only ports one and two are in communication.

Abstract: The valve of a steam trap is opened and closed by operation of a temperature sensitive bimetallic assembly having a stacked configuration with individual bimetallic members of the stacked assembly moving between a first and a second position in response to temperatures within the steam trap. The bimetallic members are arranged to vary the length of the bimetallic stacked assembly to open and close the valve of the steam trap, with the length of the stack being, preferably, diminished in response to a higher level of temperature.

Abstract: An expansion valve for a refrigeration system is provided in which the flow through the expansion valve is controlled electrically. The preferred valve embodiment utilizes a straight line configuration in that a valve body is mounted within a suitable shell. The valve body has an axial opening through it, and one end of the valve body defines an expansion port. A valve pin is movably mounted between a first position closing the expansion port and a second position opening the expansion port. Electrically energizable means are mounted to the valve body. The electrically energizable means include thermostatic expansion means operatively connected to the valve pin. The thermostatic expansion means expand axially in response to temperature change, which movement actuates valve pin operation, between closed and opened positions.

Abstract: An automatic temperature responsive control valve is disclosed for use in combination heating and cooling systems including two concentric valve sleeves each rotating individually in the valve body under the control of respective bimetallic transducers one of which directs work fluid to either a heating heat exchanger or a cooling heat exchanger in accordance with the temperature of work fluid supplied to the valve by either a chiller or a boiler through a solenoid valve controlled by the outside temperature and the other of which provides modulated flow through the heating or cooling means under the control of the spent fluid temperature. The control valve is usable for controlling the temperature of one or more rooms or for similar control of a process vessel so as to provide unique versatility of use.