Abstract: Temperature responsive valves for regulating fluid flow in a supply line such as to a showerhead or faucet wherein the valves include a slide valve assembly which is movably positioned within a bore extending in transverse communication with respect to a primary fluid passageway extending through the body of the valve between a fluid inlet and an outlet. Each valve further includes a pressure chamber in which the slide valve assembly is mounted which communicates with the fluid inlet. Temperature responsive force generators are used to control flow into the pressure chamber such that when the fluid temperature is above a predetermined temperature, the pressure within the pressure chamber increases, thereby forcing the slide valve assembly from an open to a closed position to thereby substantially terminate flow through the primary fluid passageway.

Abstract: This liquid cooling system for internal combustion engines employs a double acting thermostat to prevent coolant temperature fluctuation over a large range of engine loads and speeds and to selectively block coolant flow through the bypass circuit so that the heater and defrost circuit at engine start up and idle will have optimal flow from the coolant pump through the engine for quick heat and defrost purposes. With increased engine speed for vehicle operation, the pump increases coolant flow and pressure, causing the thermostat to open the bypass circuit in parallel with the heater core circuit. This increases flow capacity of the system and eliminate pump cavitation to enhance pump efficiency and system service life.

Abstract: Energy exchanger valve (8) with thermostat valve (12), a housing (9) with inlet (20) and outlet (21), a thermostat bellows displaceable spindle (30) with seal (42) which, by the expansion/contraction of the thermostat bellows and against the pressure of a surrounding spring (31) can close/open an opening (27) with a seating (27a) in a transverse wall (24) between the inlet (20) and the outlet (21), and a piston (13) controlled by differential pressure for the control of a medium's differential pressure across a pre-setting (11) and a thermostat valve (12) consisting of the seating (27a) and the seal (42) between the inlet (20) and the piston (13), the thermostat valve (12) being able to cut off the flow between the inlet and the outlet independently of the pre-setting (11). With the valve (8), only a predetermined maximum amount of the energy-carrying medium flows through the energy exchangers (5).

Abstract: A water valve assembly includes a valve body having defined therein (1) a first fluid inlet, (2) a temperature sensing port, (3) a fluid outlet, and (4) a fluid channel in fluid communication with the first fluid inlet, the temperature sensing port, and the fluid outlet. The assembly also includes a first water valve being in fluid communication with the first fluid inlet. The assembly also includes a sensing device having a temperature sensing surface being positioned in thermal communication with the temperature sensing port. In addition, the assembly further includes a pressure inlet member having a pressure channel defined therein. The sensing device further has a pressure sensing surface, and the pressure channel is positioned in fluid communication with the pressure sensing surface. A method of operating a water valve assembly is also disclosed.

Abstract: Energy exchanger, valve (8) with thermostat valve (12), a housing (9) with inlet (15) and outlet (16), a thermostat bellows displaceable spindle (42) with a seal (32) which, against the pressure of a spring (43) surrounding the spindle (42), closes/opens an opening (28) in a transverse wall (29) in the housing (9) between the inlet (15) and the outlet (16), and a membrane (17, 21) controlled by the differential pressure for the control of an energy-carrying medium between the inlet (15) and the outlet (16), and an adjustable closing element (11) between the inlet (15) and the membrane (17, 21), the thermostat valve (12) being able to shut off the flow between the inlet (15) and the outlet (16) independently of the closing element (11). With the valve (8), only a predetermined maximum amount of the medium flows through the energy exchangers (5). If the differential pressure increases upon the closing of one or more valves on a pipe length, the flow in the individual energy exchanger (5) is not increased.

Abstract: A temperature limiting control valve for a shower head including a housing having an internal water chamber, a water diversion piston slidably mounted in the internal water chamber, a thermostat mounted in water diversion piston that is closed by a predetermined water temperature in the water chamber with a valve and valve seat being positioned to allow water to flow into the water diversion piston when the valve is in the unseated position and to substantially prevent water from flowing into the water diversion piston when the valve is in the unseated position and to substantially prevent water from flowing into the water diversion piston when the valve is in the seated position, a button mechanically connected to the water diversion piston chamber for resetting the water diversion piston, and an overflow passage external to the housing.

Abstract: A viscous fluid shear clutch comprises a two-part outer casing 14,15 and an inner clutch member 10 between which is defined a clearance gap into which viscous fluid may flow to provide an adjustable degree of coupling between the casing and the clutch members. Fluid is continually pumped out of the gap by a circumferential scoop pump. The clutch may be assembled for reverse operation by indexing the casing parts relative to one another. The quantity of fluid in the gap may be controlled dependent on sensed temperature and sensed speed or sensed temperature alone. A thermo pressure valve provides a pressure force related to the sensed temperature; this relationship may be inverse for failsafe operation.

Abstract: A pressure regulating flow control apparatus comprises a flow metering valve (10) for controllably discharging a fluid from a spring-biased throttling spool (30) thereof to a fluidic device at a regulated pressure and a pressure modulting valve (100) operatively associated with the throttling spool (30) of the flow metering valve (10) for modulating the fluid pressue in subchamber (18) of the metering valve (10) to alter the position of the throttling spool to adjust the regulated pressure in response to fluid temperature over a relatively large temperature range so as to compensate for the variation of fluid viscosity with fluid temperature.

Abstract: A temperature compensator for use on a gas pressure regulator which inflates an infatable aircraft slide. The temperature compensator is cooperative with a movable valve upon actuation, to control the flow of pressurized fluid past a discharge orifice. The temperature compensator has a plurality of nested tubes that have alternate ones of a different linear coefficient of thermal expansion to provide an expansion and contraction of the overall length of the tubes to effect an adjustment of the movable valve and its corresponding control of the opening of the discharge orifice.

Abstract: A linear variable displacement transducer (LVDT) has a core connected to an actuator such as a torque motor. The outputs of the LVDT are demodulated and subtracted to provide a displacement signal which is compared with a desired displacement to provide closed loop control of the torque motor. The desired displacement is formed by multiplying a demand signal by the sum of the demodulated LVDT outputs so as to provide temperature compensation.

Abstract: An internal combustion engine comprising an engine block defining a cylinder bore and a fluid jacket, an annular valve seat defining a first passageway communicating with the fluid jacket, a valve assembly including a housing having a fluid inlet, a fluid outlet, a second passageway communicating between the inlet and the outlet, a second valve seat located in said second passageway, and a partially spherical outer surface portion moveable into and out of seating engagement with the annular valve seat, a valve member in the housing, and a mechanism for moving the valve member into and out of seating engagement with the second valve seat for respectively closing and opening said second passageway, and a mechanism for biasing the partially spherical outer surface portion into seating engagement with the annular valve seat.

Abstract: A liquid cooling circulation system for power and working machines (especially internal combustion engines) contains an air-separating tank (17) in a by-pass vent line (14) which is arranged at the high point (5') of the radiator inflow (5). A fill inlet (19) with connecting openings (5" and 17') to the radiator inflow (5) and air-separating tank (17) have a closure cover (20) which closes off these connecting openings with respect to one another. Excess pressure, vacuum and vent valves (21 and 22) are contained in the closure cover 20 which controls a line connection (25) to an atmospheric, or to an excess pressure expansion tank (27). A highly effective venting function in conjunction with an engine operation at strong rotational speed changes exists, since the line connection (25) is opened at least at low cooling medium temperature by means of a temperature-controlled vent valve (22).

Abstract: An apparatus for correcting the weight flow of fluid passing through a fuel control is shown. A bimetallic probe is placed within a metering spool to sense temperature variation of the fuel passing therethrough. A feedback mechanism senses changes in the probe and nulls the spool. The spool cooperates with specially shaped windows in a sleeve so that a percentage change in temperature allows a corresponding percentage change in fuel flow thereby offsetting changes in fuel density (and weight flow) caused by temperature changes. The probe is comprised of a rod and a perforated shell.

Abstract: A device for regulating the heating element of a cooking vessel of the type with an input device for setting a preselected cooking temperature in the range of the boiling point of water, a device for measuring the temperature on or in the cooking vessel, and a control circuit for maintaining cooking temperature constant at the preselected level. The device includes apparatus for altering the cooking temperature as a function of the measured atmospheric pressure or the altitude above sea level at the site of use of the cooking vessel, such adjustment being in accordance with the dependence of the boiling point of water on atmospheric pressure or altitude above sea level.

Abstract: A fluid pressure control valve and a fluid control system (such as for beverage dispensing) with such a valve has a beverage passage 3, pressure fluctuations in which are detected by a diaphragm 17 to displace a sensing member 15 axially against spring loading 23. Spring 23 reacts on thrust member 22 which is adjustable axially through a cam mechanism 25/26 to vary the biasing force of spring 23. A valve member 20 spring loaded at 21 relative to thrust member 15 normally closes an exhaust port 19 to an air or other gas passage 5 through which gas passes under pressure to be injected into the beverage from passage 3. An increase in beverage pressure in passage 3 displaces sensing member 15 to increase the spring biasing 21 on the closure member 20 and reduce the proportion of air which can escape to atmosphere from passage 5 through exhaust port 19 to provide an increase in air flow into the beverage.

Abstract: A method and apparatus 10 for self-regulating the mass flow rate of a fluid comprises a housing 12 defining an upper chamber 14 and a lower chamber 16, a sealed and pressurized bellows 30 contained within the upper chamber 14, spring bias means 58 contained within the lower chamber 16 and a poppet 32 with a poppet head 40 for defining a fluid passageway 44.Supply fluid flows through inlet 56, lower chamber 16, fluid passageway 44 and into upper chamber 14. Once in upper chamber 14 the fluid is in heat exchange communication with a fluid in sealed bellows 30. When the mass flow rate of the fluid flowing through upper chamber 14 is effected by either in pressure or a change in temperature, a corresponding change takes place in the fluid in the bellows 30 thus repositioning the poppet head 40 accordingly to redefine the area of passageway 44. Fluid leaves the apparatus through exits 28.

Abstract: Disclosed is an air volume regulator valve for an air distribution apparatus for heating, ventilating and air conditioning systems having a first open position, a closed position and a second open position and means for maintaining relatively constant volume of airflow under changing air inlet pressures. The valve may be cylindrical or flat and has a "dead band" feature to allow the valve to better assist in controlling temperature of a room or plenum chamber to be heated or cooled.

Abstract: A cooling control system including a valve device controlling a flow of cooling medium to an enclosure in response to a control signal; and a control apparatus generating the control signal as a function of both the temperature and the pressure within the enclosure.

Abstract: A temperature compensator mounted on a gas pressure regulator having a spring loaded valve in which the amount of compression in the spring is changed by moving an adjusting member of the compensator in response to changes in temperature. The temperature compensator may include a piston and cylinder assembly containing a plug made of vulcanized polymer which contracts in response to a reduction in temperature. The piston is in engagement with the spring and is moved to change the amount of compression in the spring in response to the change in temperature.

Abstract: To eliminate the effect of variables such as pressure and temperature on the operation of a pilot operated, pressure regulating valve, a poppet (30) is disposed between two ports (20), (34) in a valve body (14) and is biased towards a seat (26) by a pair of bellows (50), (58) which in turn are selectively compressed by an elongated rod (68). The bellows (50), (58) are disposed in opposing relation and have their interiors vented to eliminate the effect of ambient pressure while the body (14) and the rod (68) are made of materials having differing coefficients of thermal expansion to provide for temperature compensation.

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 coolant temperature control system of an internal combustion engine is composed of a thermostat disposed in a coolant passageway leading to a radiator. The thermostat is operatively connected to a diaphragm actuator so that valve opening temperature of a thermostat valve is controlled in response to engine loads. Additionally, the thermostat valve is arranged to be opened in response to the discharge pressure of a coolant pump, thereby lowering the opening temperature of the thermostat valve at a high speed engine operating range.

Abstract: A container lid (12) is held open by a support plate (18) carrying a chamber (20) which expands at a predetermined point in a sterilizing cycle to react against the lid, moving the plate outwardly to permit the lid to drop onto the container base. A resilient gasket (16) prevents fluid flow into the container after the lid is fallen, but permits fluid flow outwardly past the gasket when interior pressure exceeds exterior pressure. When the container is to be opened, a relief valve (60) relieves the vacuum within the container and filters air entering the container at that time.

Abstract: An ink jet recording head is constructed with a liquid droplet discharging device, a feeding path for supplying ink to the liquid droplet discharging device, and a flow path resistance adjusting section formed in one part of the ink feeding path to increase the flow path resistance in the ink feeding path due to a rise in temperature and to decrease the flow path resistance in the ink feeding path due to a fall in the temperature.

Abstract: A temperature sensor includes a probe (15) accommodating a charge gas the pressure of which is a function of the temperature thereof, and a number of bellows (65, 75 and 85) or similar pressure responsive devices disposed in a chamber (12) which is thermally isolated from the charge gas. The chamber includes a jacket (150) through which a fluid such as gas turbine engine fuel flows to insulate the pressure responsive devices from ambient temperatures.

Abstract: A cooling control system including a valve device controlling a flow of cooling medium to an enclosure in response to a control signal; and a control apparatus generating the control signal as a function of both the temperature and the pressure within the enclosure.

Abstract: A control valve for maintaining the temperature respectively the viscosity of pressure fluid passing therethrough substantially constant comprises a control slide provided with a throttle bore and downstream of the control slide a precontrol valve in which an end portion of an element expandable by the temperature of the pressure fluid is arranged. When pressure fluid with a certain pressure is fed through the inlet end of the control valve, the control slide is lifted from its seat and the precontrol valve opens. All of the pressure fluid entering the control valve is passed through various bores and annular gaps along the precontrol valve to the temperature expandable element. When the fluid reaches the desired maximum temperature a bypass for the fluid is created by the expandable element and a control pin actuated by the latter. Thereby the throttle action of the control valve is reduced and overheating of the pressure fluid avoided.

Abstract: A pressure regulator for regulating a fluid of varying pressure on the primary side to a constant pressure on the secondary side is provided with a device for compensating the pressure on the secondary side so as to make the regulator capable of delivering a constant quantity of a viscous fluid such as paint irrespective of changes in the temperature of the fluid. The compensating device comprises an inner casing sealed off from the paint passage of the regulator, an assembly of bimetal plates housed within the inner casing and mechanically linked to the valve stem of the regulator, and an auxiliary diaphragm closing the bottom of the inner casing and also linked to the valve stem. The expansion and contraction of the assembly of bimetal plates is applied to the pressure regulating spring of the regulator to change the degree of compression of the pressure regulating spring and thus the fluid pressure on the secondary side in proportion to the temperature of the fluid.

Abstract: A container lid is released at a desired point in a sterilizing cycle with the actuating movement being provided by an expandable chamber having a quantity of sterilizing environment captured during the sterilizing cycle.

Abstract: A building heating system with a plurality of steam radiators is provided with a control unit for the steam boiler. The control unit receives signals representative of the outside temperature and the pressure of the steam in the feeder conduit. The control unit shuts off the boiler when the steam pressure in the feeder conduit exceeds a predetermined value corresponding to a given measured outside temperature. After the pressure has decreased to a value below the predetermined value for the measured temperature, the control unit restarts the boiler. Another control unit receives signals representative of the condensate temperature and the pressure in the return conduit. This control unit operates a vacuum pump in the return line and assures that the vacuum pressure in the return line is less than that which causes the condensate to vaporize.

Abstract: A container lid is released at a desired point in a sterilizing cycle with the actuating movement being provided by an expandable chamber having a quantity of sterilizing environment captured during the sterilizing cycle.

Abstract: A bladder, suitably formed of silicone rubber and molded into a cylindrical shape, is provided internally with a deforming spring. The resultant unit serves as a delivery stabilizer for a ventilation shaft without loss of elasticity of the bladder.

Abstract: The control valve for keeping a constant temperature or viscosity of a pressure medium in a hydraulic consumer circuit includes a main control valve provided with a control slider and a preliminary control valve in which a temperature sensitive control element is arranged in such a manner that upon reaching a predetermined temperature of the medium a bypass channel is established between the inlet and the outlet of the valve.

Abstract: The control valve for keeping constant viscosity and temperature of a pressure medium in a hydraulic circuit includes a preliminary control valve which supports a temperature sensitive control element and adjustable throttling means including a throttling plunger controlled by the control element; a control slider arranged in the valve upstream of the preliminary control valve is provided with first throttling means for admitting pressure medium against the preliminary control valve to establish a bypass connection in addition to the main connection controlled by the slider; to avoid excessive temperature increase of the medium in the case of a damage of the control element, a temperature sensitive shearing pin is provided between the control element and the throttling plunger to cause an override of the plunger to a position in which an additional bypass connection is established which prevents throttling and thus temperature increase of the pressure medium.

Abstract: A thermally responsive valve composed of a first fluid passage whose inlet is connected to a carburetor advance port and whose outlet communicates with a chamber; a second fluid passage whose inlet communicates with the chamber and whose outlet is connected to an airtight chamber of a control valve; a bimetal in the chamber cooperating with a sealing member to close the outlet of the first passage when the temperature of the bimetal exceeds a predetermined value; and a one-way check valve disposed in second fluid passage to permit fluid flow from the first passage to the second passage. When the valve temperature exceeds a predetermined value, the bimetal will snap over to communicate the first and second passages so that the vacuum from the carburetor advance port can act upon the control valve.

Abstract: A temperature and pressure responsive fluid flow control valve, particularly useful for controlling the operation of a fluid fan drive. This valve regulates operation of the fluid fan drive by controlling the fluid flow from the fluid fan drive, in response to both engine coolant temperature and fluid pressure of the fan drive oil.

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 pneumatic device is responsive to changes in temperature to vary a controlled pressure. Means are provided to vary the temperature response characteristics in accordance with changes in altitude or other variations in ambient pressure.

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: The multistep fluid control valve comprises a valve case having a plurality of valve seats. A valve stem is provided in the valve case and is capable of being continuously or stepwise displaced axially. At least one valve body is shiftably mounted on the valve stem it is urged toward the corresponding one of the valve seats, but normally arrested at a position clear of the valve seat. This valve body closes the valve seat when the valve stem is moved a predetermined amount. At least one further valve body is provided axially in line with the valve stem so as to cooperate with a corresponding one of the valve seats. The further valve body is actuated by a further stepwise movement of the valve stem so that the corresponding valve seat is opened or closed by the further valve body.

Abstract: Air flow volume in a delivery duct is sensed in the form of changes in duct pressure and the sensed pressure is fed back to a diaphragm assembly which is part of a thermostatic control located in the room to which hot or cold air is being delivered. Dependent upon the sensed pressure, the diaphragm assembly throttles a bleed opening in the supply line of a pneumatic actuator, which actuator determines the position of a damper in the duct to thereby control the volume of air flow in the duct. A bellows is also part of the thermostatic control and senses room temperature to establish a spring force on the diaphragm assembly and against which the sensed pressure must act. The bellows is adjustable to afford room temperature selection. The bellows and a compression spring act on a master lever, the compression spring reacts against the bellows force.