Abstract: A material handling and mold filling system is provided which directs the flow of molten plastic material from an extruder and allocates the molten material to a plurality of nozzles through the use of independently operated, variable valves. The system therefore provides independent streams of molten plastic material having variable temperatures and flow rates or volumes to particular sections or regions of the mold. This independent temperature or flow of molten plastic material facilitates the complete, rapid and accurate filling of the molds, reducing turbulence and other temperature or flow-related imperfections in the finished components. A multiphase material handling system is also disclosed for expeditious sequential and simultaneous filling and pressing of the mold and extracting the completed component from the system.

Abstract: A thermostatic element includes a metal cup that contains a material, which can expand and contract according to variation in its temperature, and is provided on an inside thereof with an insert that separates its inside volume (V1) into at least two cavities for storing the material. The thermostatic element also includes a piston which is axially reciprocally movable relative to the cup depending on whether the material expands or contracts. The insert includes at least one opening there through for enabling passage of the material between the at least two cavities.

Abstract: Disclosed herein is an air conditioning diffuser having a function of changing an air supply direction. The diffuser of the present invention includes a frame (10) and a temperature sensing cylinder (20), which is coupled to the frame (10). A wax (21) is charged in the cylinder (20), and a piston rod (22) is provided in the cylinder (20). The diffuser further includes a blade support body (50), coupled to the cylinder (20), a pushing member (23), coupled to the piston rod in the blade support body, and a vertical movable member (40), which is provided in the blade support body (40) and is pushed downwards by the pushing member (23) when the wax is expanded. The diffuser further includes air guide blade assemblies (30), which are supported by the blade support body (50) and are coupled to the vertical movable member (40) so that, when the vertical movable member is moved upwards or downwards, blades (35) are rotated. An elastic member is provided under the vertical movable member (40).

Abstract: A thermally responsive valve for detecting the temperature of an engine of motor vehicles includes: an upper housing having an inlet port, and outlet port, and a cylindrical chamber; a lower housing including thermal expansion member in a thermal transmitting cover; and a movable shaft piston movably disposed within an elongated aperture in the lower housing. The movable shaft piston is operatively connected at one end to the cylindrical chamber for operatively closing or opening the inlet port, and at the other end to the thermal expansion member through a diaphragm for moving the movable shaft piston upward or downward responsive to engine temperature.

Abstract: A pneumatic temperature control unit having a fluid receptacle containing a fluid capable of expanding or contracting with temperature. The fluid receptacle having a surface capable of movement in response to expansion or contraction of the fluid in the receptacle. A spring positioned to exert a variable force on the receptacle surface. The variable force being calibrated for the corresponding fluid temperature above which the receptacle surface moves a desired amount. A calibrated temperature scale to adjustably set the variable force permits the receptacle surface to move at the desired fluid temperature. An elongated trigger mounted to transmit movement by the receptacle surface to a module having structure for controlling the flow of air between an air inlet port and an air output port.

Abstract: A valve is provided with one inlet and two outlets with one of the outlets being normally closed by a valve in the form of a film disc carried by a flexible blade. A magnetic pad secured to the blade is attracted by the proximity of an actuator carrier magnetic element to cause the flexing of the blade to open the normally closed outlet and to close the normally open outlet. The actuator may be either thermally or electrically actuated and is suitable for use in a VAV system with thermostatically controlled bellows to override a bleed thermostat to permit warm-up of an overcooled area or to cause a switch over in operation between a heating and cooling mode by connecting the appropriate bleed thermostat so as to control the inflation of the bellows.

Abstract: A temperature responsive pneumatic control device comprising a receptacle containing a temperature responsive fluid therein, the receptacle being in open communication with a first diaphragm which in turn is in movable communication in a piston capable of being displaced by movement of the diaphragm, the piston being in communication with a rod attached to a second diaphragm and extending on both sides thereof such that the end of the rod downstream from the diaphragm is in communication with an air supply valve, which upon displacement gives a pneumatic signal to a pneumatic device such as a ridge vent in a building.

Abstract: This disclosure relates to a water-cooled engine for a boat, including apparatus to prevent the engine from overheating due to a shortage of coolant. The apparatus includes an air intake connected to supply fresh air to the engine, and an exhaust system connected to discharge exhaust gas from the engine. A duct is connected between the air intake and the exhaust system, and a normally closed valve is provided in the duct. A heat responsive device is provided on the engine to open the valve in response to a predetermined high temperature of the engine, whereby at least a portion of the exhaust gas is fed back through the duct to the air intake.

Abstract: An air temperature control device for the air intake of an internal combustion engine comprises a thermo-responsive actuator which is, in use, disposed to respond to the air temperature in said intake system, a first valve means operably connected to the actuator for progressive movement in a first chamber provided with air inlet and/or outlet ports between two positions, in the first of which positions a first bleed passage from the chamber is closed and in the second of which positions said first bleed passage is open permitting the passage of air to or from said ports from a second chamber provided with an air inlet which is connected in use to a vacuum motor operable to adjust the relative proportions of ambient and pre-heated air admitted to the intake system, and a second valve means to close said bleed passage and also operable to close a second bleed passage between said second chamber and a third chamber having a port which is connected (in use) to a vacuum source constituted by the air intake manifo

Abstract: A vacuum control system for devices in vehicles is disclosed, such as for controlling air-conditioning and heating equipment. Temperature-sensitive control valves which are inserted in the cooling-water circuit of an internal-combustion engine are automatically operated at a specific temperature to control a pneumatic actuator located vacuum control circuit for the devices.

Abstract: The temperature controlled valve mechanism herein comprises a valve housing, a valve inlet in the housing for connection with a fluid source, a valve outlet in the housing for draining fluid from the housing and a valve closure member supported for movement toward and away from the valve outlet between closed and opened positions. The valve closure member blocks and closes the valve outlet when it is in the closed position. A biasing spring is provided for urging the valve closure member away from the closed position. An expansion chamber is formed within the housing. Apparatus for introducing a pressure into the expansion chamber is provided for moving the closure member to a closed position against the force of the biasing spring upon entry of a pressurized medium into the expansion chamber. A temperature-activated venting mechanism for venting and depressurizing the expansion chamber upon occurrence of a predetermined temperature drop is provided.

Abstract: A thermally responsive valve (10) for valving adjacent first (21) and second (22) fluid ports is disclosed which prevents harmful fuel vapors from adversely affecting the valve power element (12). An elongated valve member (82) is movably contained within a housing fluid chamber (18) and spring-biased toward a closed position whereupon a first seal ring (90) located around the valve member engages with a valve seating surface (70) located intermediate the two fluid ports. When predetermined temperatures are encountered, a thermally responsive power element (12) connected to the lower end of the valve housing overcomes the biasing force of the spring (106) and moves the valve member to an open position in which the valve surface is spaced from the valve seat, thereby permitting fluid communication between the two ports. A lower portion (104) of the valve member extends beyond the fluid chamber and abuts with an output rod (60) of the power element.

Abstract: A temperature responsive valve comprising a hollow housing having three ports, a cylinder mounted in and to the housing assembly in the vicinity of one of the ports, the cylinder having a gas escape space through which said one of the ports communicates with the hollow portion of the housing assembly, a thermal expansive member which changes in its cubical volume in response to an external temperature; and a valve body which is connected to the thermal expansive member and which is movably arranged in the cylinder via a single seal member so as to engage with or disengage from the cylinder in accordance with the cubical change of the thermal expansive member.

Abstract: In a diver heating system of the type in which a fluid being circulated in he circulation passage of the diver's clothing is heated by the controlled combustion of a reducing metal in an oxygen atmosphere, a temperature control system in which a gas flow control valve controls the oxygen flow to the reaction to automatically maintain a preset temperature of the circulating fluid and a gas shut-off valve serves as a backup to quickly shut-off the oxygen flow if the temperature of the circulating fluid exceeds a preset value. In both the gas flow control valve and the gas shut-off valve, the heated water is fed through a heat exchanger where it is in thermal contact with a thermofluid so that heat is transferred between the two fluids. The change in volume of the thermofluid with temperature is coupled to a motion bellows which operates to control the flow of oxygen through an orifice.

Abstract: The temperature controlled valve mechanism herein comprises a valve housing, a valve inlet in the housing for connection with a fluid source, a valve outlet in the housing for draining fluid from the housing and a valve closure member supported for movement toward and away from the valve outlet between closed and opened positions. The valve closure member blocks and closes the valve outlet when it is in the closed position. A biasing spring is provided for urging the valve closure member away from the closed position. An expansion chamber is formed within the housing. Apparatus for introducing a pressure into the expansion chamber is provided for moving the closure member to a closed position against the force of the biasing spring upon entry of a pressurized medium into the expansion chamber. A temperature-activated venting mechanism for venting and depressurizing the expansion chamber upon occurrence of a predetermined temperature drop is provided.

Abstract: A temperature-detection type change-over valve for switching the state of communication between a plurality of passages, suitable for use in combination with a controller for controlling the operation of an internal combustion engine. The valve has a thermally expandable member adapted to expand when heated, a shaft adapted to be pressed and moved in one direction as the thermally expandable member expands, a valve movable following the movement of the shaft between a first and a second position for switching the state of communication of passages, and a tension spring disposed to surround the shaft and adapted to exert a biasing force to act against the force generated by the expansion of the thermally expandable member.

Abstract: A thermostat for a pneumatic control system controls output pressures to a plurality of elements to be controlled. The thermostat can control output pressure directly or inversely and linearly or nonlinearly with respect to temperature. Additionally, the pressures can be controlled sequentially or simultaneously.

Abstract: An electro-vacuum relay 10 is disclosed comprising a thermally responsive actuator 18 mounted on the lower end of a housing 14, 16 which defines a vent chamber 66. Upper and lower fluid ports 38, 40 are integrally molded into the housing and communicate with vent chamber 66. A pair of electrical terminals 22 and 24 include tab portions 30, 32 which extend through housing cover 16 and into the vent chamber. A carrier member 68 is movable in the vent chamber and has reacting against its upper end a compression biasing spring 88 and against its lower end an output member 64 of thermal actuator 18. A rectangularly shaped elastomeric valve member 72 is mounted in an opening 74 in the carrier and has an upwardly extending double beaded sealing surface 76 around its periphery that engages with a valve surface formed by an inner wall portion 42 of main housing 14.

Abstract: In a diver heating system of the type in which a fluid being circulated in he circulation passage of the diver's clothing is heated by the controlled combustion of a reducing metal in an oxygen atmosphere, a temperature control system in which a gas flow control valve controls the oxygen flow to the reaction to automatically maintain a preset temperature of the circulating fluid and a gas shut-off valve serves as a backup to quickly shut-off the oxygen flow if the temperature of the circulating fluid exceeds a preset value. In both the gas flow control valve and the gas shut-off valve, the heated water is fed through a heat exchanger where it is in thermal contact with a thermofluid so that heat is transferred between the two fluids. The change in volume of the thermofluid with temperature is coupled to a motion bellows which operates to control the flow of oxygen through an orifice.

Abstract: A three-port thermally responsive valve for alternately valving an intermediate fluid port with adjacent upper and lower fluid ports. A single valve member is movably contained within a housing fluid passageway and spring-biased in a first position so that a sealing surface at each end of the valve member is respectively engageable with and spaced from corresponding valve sealing surfaces in the fluid passageway. The sealing surfaces on the valve member are spaced with respect to the valve sealing surfaces in the housing fluid passageway to maintain isolation of the upper and lower fluid ports until valving of the intermediate fluid port with either the upper or lower fluid port is completed. When predetermined temperatures are encountered, a thermally responsive actuator connected to the valve member by a rod overcomes the biasing force generated by the spring and moves the valve member to the second valved position.

Abstract: A control valve is provided for a fluid-operated clutch. Specifically, the control valve controls fluid to the fluid-operated clutch of a vehicle cooling fan. The control valve disengages the clutch to disconnect the fan from an internal combustion engine of the vehicle when coolant temperature is low and engages the clutch to operate the fan when the coolant temperature rises to a predetermined value. The control valve has a central passage with three bores and a valve spool with three sealing members associated with the bores. Fluid is supplied under pressure to the valve and always acts in opposite directions on two of the sealing members to provide a balanced condition for the valve spool even with fluctuations in the inlet pressure of the fluid. The control valve utilizes a temperature-responsive device to move the valve spool, with the device being readily adjustable to achieve operation at desired coolant temperatures.

Abstract: A detector for sensing the compressor inlet temperature of a gas turbine engine and for producing an output pressure signal which is used by the fuel control of the engine. The magnitude of the output signal is determined by the position of a valve which changes positions in response to changes in temperature. The response time of the detector is made faster by causing a feedback pressure which acts on the valve to initially change at a slower rate than the output pressure (i.e., to lag the output pressure) when the output pressure changes as a result of temperature variations. The invention can be incorporated either in a self-contained sensor or in an add-on unit which can be retrofitted to existing sensors having relatively slow response characteristics.

Abstract: A temperature responsive control device achieving sequential control of functions for engine temperature control in response to engine temperature conditions, the first function being controlled by a fluid flow valve and the subsequent function or functions being controlled by an electrical switch means actuated via the valve.

Abstract: A temperature responsive fluid control valve with sequential control functions, employing a pair of axially aligned hollow elongated plungers or slide pins, and a pair of ball valves and valve seats therefor. One ball valve is straddled by the two plungers, being biased onto its seat by the second plunger and shiftable off its seat by the first plunger. This ball valve controls a first fluid flow in response to a thermoresponsive sensor acting on the first plunger. The second ball valve is operated sequentially after the first, via the second plunger for control of a second sequential fluid flow using the same thermoresponsive sensor.

Abstract: A differential vacuum regulator having an input chamber and an output chamber and a control arrangement for providing an output signal in the output chamber that has a constant differential value from the value of an input signal in the input chamber, the regulator having a condition responsive unit that is independent from the value of the input signal and is adapted for varying the differential value in relation to the condition being sensed by the condition responsive unit.

Abstract: A thermostatic valve for intake air temperature compensation for an internal combustion engine includes a housing formed with first, second, and third openings leading, respectively, to the atmosphere, a negative pressure motor, and the intake manifold of the engine. To this housing is secured a temperature sensor including a piston rod to be actuated by a thermally expandable element whose volume increases or decreases with a change in temperature. A valve element to be moved into and out of contact with a valve seat by the piston rod of the temperature sensor is accommodated in a casing. Inside the casing a holed partition member is disposed between the first and third openings and between the second and third openings, and a check valve designed to open in one direction only is located between the partition member and the third opening.

Abstract: A condition responsive valve construction for varying the output pressure of the valve construction in relation to a movable part of a condition responsive device that is moved in relation to the condition sensed thereby, the valve construction having a housing provided with an inlet to be interconnected to a fluid pressure source and an outlet separated from the inlet by a main valve unit and being adapted to be interconnected to vent by a vent valve unit. A biasing spring operatively interconnects the movable part of the condition responsive device to a movable vent valve seat of the vent valve unit to urge the same to an open condition relative to a movable vent valve member by a force that is changeable by the condition sensed by the condition responsive device. A sealing and biasing bellows construction is operatively interconnected to the vent valve seat to tend to urge the same to a closed condition thereof.

Abstract: A thermostatically operated dual action control mechanism for controlling fluid actuatable devices such as the shutter and the fan clutch in the cooling system of a diesel engine in vehicles. A valve rod is provided and movable between first and second positions. In the first position, the valve rod seals off communication between a source of fluid under pressure and one of the fluid actuatable devices. In the second position of the valve rod communication is established between the fluid source and the fluid actuatable device. A hollow passageway is provided in the valve rod, and in the first position of the valve rod is open to allow fluid to flow through to the other fluid actuatable device of the devices. In the other position, the passageway is closed off by a reciprocating needle valve and simultaneously permits fluid to be exhausted from the other fluid actuatable device. A thermally responsive sensor element actuates the valve rod between the first and second positions thereof.

Abstract: The invention relates to a four-port thermally responsive valve for valving two normally closed fluid ports and one pair of normally open fluid ports in response to predetermined temperatures. A single valve member is movably contained within a housing passageway and spring biased in a first position so that a sealing surface at each end of the valve member is respectively engageable with and spaced from corresponding seating surfaces in the passageway for achieving initially open or closed valved conditions between the individual ports in each pair. A centrally located seal ring mounted in the housing passageway and surrounding the valve member isolates one pair of fluid ports from a second pair of fluid ports when the valve member is moved to a second position thereby permitting three valving functions to be attained with one device.

Abstract: A thermally responsive device for valving a common fluid signal port between two separate fluid pressure sources and simultaneously actuating an electrical switching means. The electrical switching means is isolated from the fluid valving means and pressure ports. A thermal sensing means is operative in response to predetermined temperatures to move a valve means for valving the common signal port between the separate fluid pressure sources. The valve means employs a unitary valve member having spaced seals for seating against individual valve seats for alternately isolating the individual pressure source ports from the signal port.

Abstract: A snap action fluid control valve, the operation of which is controlled by a relatively slow acting thermally responsive actuator member. The valve of this invention is particularly adapted for use in controlling flow of fluid to a fluid operable clutch or the like for operation thereof. The thermally responsive actuator portion of the valve senses temperature of a fluid, the temperature of which is responsive to operation of a fan which is operated through the clutch.

Abstract: A thermostatic valve, used in an engine for introducing warmed air to the engine and air to a slow-port passage of a carburetor, has a valve casing defining therein first and second compartments. A first valve member is disposed in the first compartment to control the introduction of the intake vacuum or the atmospheric pressure to a negative pressure motor mounted on a throat of an air cleaner. A second valve member is disposed in the second compartment to control the communication between a float chamber and the slow-port passage of the carburetor when the temperature of the air introduced into the engine exceeds a preset value so as to prevent excessive richness of an air-fuel mixture.

Abstract: A differential vacuum regulator having a housing provided with an inlet for being interconnected to a vacuum source and an outlet for being interconnected to a vacuum operated device, valve means being carried by the housing for interconnecting the inlet and the outlet together to provide a certain vacuum level at the outlet when the regulator senses a temperature below a certain temperature and for interconnecting the inlet and the outlet together to produce a different vacuum level at the outlet when the regulator is sensing the certain temperature.

Abstract: A thermostatically operated dual action control mechanism for controlling fluid actuatable devices such as the shutter and the fan clutch in the cooling system of a diesel engine in vehicles. A valve rod is provided and movable between first and second positions. A hollow passageway is provided in the valve rod, and in one position of the valve rod is open to allow fluid to flow through to one of two exhaust ports in the valve housing to actuate one of the devices. In the other position, the passageway is closed off by a reciprocating needle valve. A thermally responsive sensor element actuates the valve rod between the first and second positions thereof. A limit switch is provided and actuated by the needle valve in the second position of the valve rod and opens up a solenoid valve to allow fluid to flow to the other device.

Abstract: A thermally operated control device having a housing provided with a chamber divided into two sections by a flexible diaphragm and with thermally expansible material filling one of the sections to act on one side of the diaphragm and with a plunger disposed in the other of the sections and having one end thereof abutting the other side of the diaphragm to be moved thereby, the chamber sections being substantially of the same size adjacent the opposed sides of the diaphragm and the one end of the plunger substantially filling its respective section adjacent its side of the diaphragm to minimize the deformation and stretching of the diaphragm as the material forces the diaphragm into the plunger section upon expansion of the material.

Abstract: A temperature responsive valve for controlling communication between multiple ports is disclosed in three embodiments. In a first embodiment first and second adjacent chambers in a valve body are separated by a valve and second and third adjacent chambers in the body are separated by a second valve. The valves include a common stem carrying movable valve elements for simultaneously opening and closing the same. A sliding seal between the second and third chambers isolates these chambers for all positions of the valve stem. In a second embodiment there is also a fifth chamber communicating with a fifth port, a third valve is between the fourth and fifth ports, and a third valve element on the stem communicates the fourth port with the fifth port as the third port is closed relative to the fourth port. In a third embodiment first and second adjacent chambers in a valve body are separated by a valve seat which is selectively closed by a thermally actuated valve stem carrying movable valve elements.

Abstract: A temperature responsive valve having a series of three ports and a specially shaped valve stem and valve seat arrangement wherein the valve stem of the arrangement is connected to a thermostatic power element for controlling open flow intercommunication between the first and second ports or the second and third ports of the series.

Abstract: A thermostatically operated air valve having a valve body, a valve chamber located within the body, a thermal sensor having a push rod extending therefrom into said valve chamber at a first end thereof, a reciprocal valve rod located in the valve chamber with an axial opening therein communicating with a supply of air under pressure, said axial opening of the valve rod communicating with a cylinder located at the second end of said valve chamber, a piston located within said cylinder and slidably mounted on the valve rod for rapid reciprocal movement thereon, an exhaust port in said cylinder having a retractable valving member seated in sealing relationship within said exhaust port, said push rod being in abutting relationship with said valve rod, said push rod extending at a predetermined actuation temperature to push said valve rod into contact with said valving member thereby sealing said axial opening in the valve rod and unseating said valving member from said exhaust port, whereby air in said cylinder i

Abstract: A refrigerant control valve for air conditioning systems of the hot gas bypass type including a bypass passage between the compressor outlet and the evaporator inlet through which refrigerant flow is regulated by a pressure operated valve member one side of which is exposed to compressor outlet pressure and the other side of which is exposed to refrigerant pressure in a control chamber. The control chamber is connected by a bleed passage to the compressor inlet and a Schrader-type bleed valve therein to allow the discharge of refrigerant from the control chamber when open so that an opening pressure differential is established across the valve when the bleed valve is open. A sensor-actuator for the bleed valve is supported near the evaporator outlet in the refrigerant flow therefrom and includes a housing with a rigid wall and a movable wall which encloses an interior space filled with water.