Abstract: A priority control system is disclosed for controlling multiple secondary load devices, and one priority load device. The secondary load devices can be randomly controlled at any time, except when the priority load device is activated, in which case, all secondary load devices are deactivated. The priority control system has a first relay which relays power to a plurality of secondary relays corresponding to the secondary load devices. The first relay is biased such that it normally provides power to the secondary relays. The first relay also has a priority position which is the non-biased position, for providing power to the priority load device. The first relay is activated by a priority control device which switches system power from the secondary relays to the priority load device. A priority timer circuit is provided to limit the time the first relay is in the priority position, regardless of a possible malfunction in the priority control device.

Abstract: A new temperature-sensitive valve for handling liquids includes a housing having a valve seat and a valving member mounted for movement from a flow-permitting first position spaced from the seat to a flow-blocking second position against the seat. A latching mechanism is coupled to the valving member for retaining such member in the first position when the temperature of the liquid is below a shutoff temperature. A temperature-sensitive device is mounted in the valve body and has an actuator coupled to the latching mechanism. The valve body has a chamber containing the sensing portion of the temperature-sensitive device and also has flow apertures positioned so that when the valve is open, liquid flows across and is in contact with the sensing portion for excellent heat transfer and quick response. The latching mechanism is released and the valving member moves to the second position when the temperature of the liquid is above the shutoff temperature.

Abstract: A trip-free high limit control for a water heater having a source of heat to heat the water. A switch arm is mounted in a control housing for movement in the housing. The switch arm has a first contact portion at one end thereof. A second stationary contact is mounted in the housing. The contact portion on the switch arm is movable relative to the stationary contact between closed and open positions to control the energization and de-energization of the source of heat for the water heater. A bi-metallic snap disk is mounted in the housing and is movable with snap action between first and second positions of stability at a predetermined overheat temperature. A switch arm actuating plunger is mounted in the housing for movement by the snap disk to open the switch contacts at a predetermined overheat temperature. A reset mechanism is provided which includes a reset spring mounted in the housing in operable engagement with the plunger.

Abstract: A thermostat has a metal disc cup with a circular cup bottom wall and a cylindrical cup peripheral wall. An inclined flange extends outwardly from the cup peripheral wall. A body whose temperature is to be sensed has a blind hole therein with a closed bottom and a cylindrical periphery. The cup is received in the hole with the cup bottom wall engaging the hole bottom and with the flange under bending stress in engagement with the hole periphery.

Abstract: The valve arrangement for a sterilization container having a pressure chamber with vent openings, includes two valve bodies arranged in the pressure chamber above the vent openings. The valve bodies are controlled by temperature sensors. The temperature sensors employ snap-discs which are disposed above each other in the valve bodies. The temperature sensors of each valve are adjusted to different upper and lower snap temperatures. At least one of the vent openings remains open, with both of the valves closing the vent openings only at a predetermined point during the venting phase of sterilization. A condensation discharge valve can be disposed at an outlet in the lowest point of the bottom of the container. The discharge valve includes a valve body which opens and closes the outlet. The valve body is normally in the open position and is controlled by a temperature sensor also in the form of a snap-disc. The container can include a condensate collection container disposed on the bottom thereof.

Abstract: A thermally responsive pressure relief valve using a bimetallic valve disc as a component. The bimetallic valve disc is used as a temperature sensitive valve seal. When temperatures go beyond the set point of the disc, it opens the valve with a snap acting motion permitting pressure to be vented through the valve. The valve disc automatically resets and reseals the valve when temperatures return to the reset point of the disc.

Abstract: A valve construction and method of making the same are provided, the valve construction comprising a housing provided with a chamber therein and with an inlet leading to the chamber and outlet leading from the chamber, a valve seat carried by the housing and leading to the outlet, a movable bimetallic lever carried by the housing and having an operating bimetallic part, a heater wire disposed in coiled relation about the operating part to heat the same when an electrical current flows through the heater wire, and a valve member carried by the bimetallic lever for opening and closing the valve seat under the control of the operating part of the bimetallic lever, the operating part of the bimetallic lever having a fastening unit operatively interconnected to the heater wire to tend to hold the heater wire in the coiled relation on the operating part of the bimetallic lever, the heater wire comprising a length of the wire doubled upon itself to define a looped end and pair of free ends adjacent each other with t

Abstract: An oil level sensing apparatus has a body which defines a volume having an open bottom. A float in the volume supports a permanent magnet and moves within the volume in accordance with the oil level therein. A reed-switch is affected by the magnet supported on the float to detect a low oil level. A temperature sensitive plate closes the open bottom of the volume at low temperatures in order to prevent false readings. Additionally, in order to prevent false readings during transient oil level fluctuations at higher oil temperatures, a spring opposes the opening of the plate such that a restriction is formed in the path for draining oil from the volume. This delays the oil drainage from the chamber and any resulting low oil level signal.

Abstract: A fluid flow control device primarily intended for throttling the flow of liquid refrigerant between two flow rates. The device includes a disc which moves between two distinct positions with a snap action in response to changes in temperature of the refrigerant. The disc is connected at its center to a stem member having an axial bore aligned with and of smaller cross-sectional area than the outlet passage of a flow chamber wherein the disc and stem are positioned. When refrigerant temperature increases to a predetermined level, the disc moves the stem into contact with the chamber wall surrounding the outlet orifice, thereby limiting refrigerant flow to that which passes through the relatively smaller bore of the stem member. When refrigerant temperature drops sufficiently, the disc snaps back to the other position, moving the end of the stem away from the outlet orifice to permit flow at a higher rate.

Abstract: There is provided a thermally controlled valve having a valve seat, a closure valve associated therewith, an expansion capsule containing an evaporation medium which actuates the closure valve by a stroke displaceable wall part, and a snap spring biasing the closure in the opening direction and arranged so that in the closed position of the valve, the spring occupies a position of stroke lying in the range of stroke between the force maximum and the force minimum of its force stroke characteristic.

Abstract: A valve construction and method of making the same are provided, the valve construction comprising a housing provided with a chamber therein and with an inlet leading to the chamber and outlet leading from the chamber, a valve seat carried by the housing and leading to the outlet, a movable bimetallic lever carried by the housing and having an operating bimetallic part, a heater wire disposed in coiled relation about the operating part to heat the same when an electrical current flows through the heater wire, and a valve member carried by the bimetallic lever for opening and closing the valve seat under the control of the operating part of the bimetallic lever, the operating part of the bimetallic lever having a fastening unit operatively interconnected to the heater wire to tend to hold the heater wire in the coiled relation on the operating part of the bimetallic lever, the heater wire comprising a length of the wire doubled upon itself to define a looped end and pair of free ends adjacent each other with t

Abstract: A thermally controlled valve is provided having a valve seat, a closure valve cooperating with the valve seat, a diaphragm capsule, a plate spring, and an abutment supporting the plate spring along its outer edge. The diaphragm capsule includes a rigid wall part and a diaphragm component actuating the closure valve, the wall part and the diaphragm component being joined with each other along their outer edges and forming a reservoir therebetween for an evaporation medium. The plate spring rests against the face side of the diaphragm component which is averted from the wall part of the diaphragm capsule, and the inner edge of the plate spring engages the closure valve so as to act thereon in the opening direction.

Abstract: An assembly is provided for the prevention of scalding in showers and other such installations. The assembly includes a valve assembly within a mixed water supply line and a temperature sensitive element for controlling the operation of the valve assembly. The valve assembly is preferably designed to allow some leakage when in the closed position.

Abstract: In a freeze protection-valve, a wax actuator is situated in a heat-conductive housing to which heat is conducted from the liquid system being protected. The housing prevents the actuator from triggering the valve to its opened condition while the liquid system is hot, but permits a rapid response when the liquid system is cool. In a snap-action freeze protection valve, the actuator is carried by the valve stem, and heat is conducted from the valve body to the valve stem through a sleeve through which the valve stem slides. The actuator moves a cam within the valve stem which operates a ball-type latch. The latch holds the valve in the closed position until the actuator releases the latch. Also disclosed is a remote-controlled valve operating mechanism which uses an electrically heated wax actuator to effect valve closure.

Abstract: A thermoplastic valve includes a valve body having an open cavity therein and inlet and outlet passages which communicate with the cavity, a valve seat at the inner end of the outlet passage and a bimetallic disc in the cavity. The bimetallic disc has an apereture therethrough, and it is responsive to a predetermined temperature condition for flexing between a closed position wherein the central portion of the disc is received on the valve seat so that it obstructs the outlet passage and an open position wherein the outlet passage is unobstructed and a fluid can pass outwardly from the cavity by passing through the aperture in the disc and then through the outlet passage. The disc is supported in the cavity so that the peripheral portion of the disc is spaced inwardly from the plane of the valve seat to minimize the resistance to the flow of a fluid as the fluid passes from the aperture in the disc to the outlet passage when the disc is in the open position.

Abstract: A thermally activated snap-action valve includes a valve body having an interior cavity and inlet and outlet passages formed therein and a bimetallic disc, a ball element, and a resilient positioning plate in the cavity. The positioning plate is operative for normally positioning the ball element in inwardly spaced relation to a valve seat at the inner end of the outlet passage, and the bimetallic disc is mounted in the cavity so that the pressures in a fluid passing through the valve are substantially equal on opposite sides of the bimetallic disc. The bimetallic disc is operative with a flexing action in response to a predetermined temperature condition for moving the ball element to a closed position wherein it is received in the valve seat to obstruct the outward flow of fluid through the outlet passage.

Abstract: A safety valve for a fluid delivery system having a duct in which the safety valve is housed. The safety valve comprises a temperature sensitive means through which fluid passes, this temperature sensitive means being connected to a retaining means which retains a valve member in the cocked position. The associated valve seat is located downstream of the valve member and allows passage of fluid therethrough when the valve member is cocked. When a predetermined temperature is reached by the fluid the retaining means disengages the valve member which is biassed towards the valve seat and subsequently seals the passage through the valve seat.

Abstract: A device for the control of room temperature in existing automobiles is placed in series with the driving circuit of the blower motor of the automobile. The temperature control device includes a bimetal or spiral bimetallic strip capable of setting a working temperature. The bimetal is used for the direct detection of the room temperature of the automobile. An insulating member is attached to a free end of the bimetal. The insulating member carries a first electrical contact, and a mating contact opposes the first contact. Respective lead wires are attached to each contact. A switch lever rotates the bimetal to set a desired temperature. A stopper is provided to hold the contacts together so that, regardless of the ambient temperature, the blower motor remains on, and the user can rely solely on the existing controls.

Abstract: For use in applying a vacuum to a choke pull-off assembly, a temperature compensating vacuum delay valve comprising a housing a first opening adapted to be connected to manifold vacuum and a second opening adapted to be connected to a choke pull-off assembly which functions to partially open the choke when a vacuum is applied. The housing includes a valve disc, yieldingly urged against the seat. A restrictor permits restricted flow between the one side of the valve disc and the other side of the valve disc when the valve disc is in sealing and a bi-metallic disc is positioned in the housing between the first opening and the valve disc and is operable upon predetermined change of temperature to move the valve disc away from a seat and thereby permit unrestricted flow between the first opening and the second opening. The valve disc is spring loaded against the seat such that it will open and allow unrestricted flow in the reverse direction.

Abstract: A temperature-dependently actuated 3-port, 2-way valve 1 has a bimetallic disc 22 which closes either a valve seat 15, as shown, or a valve seat 14 when it snaps over into an upwardly domed position. The disc 22 is floatingly supported by two 3-legged springs 23 and 24 acting on its opposite sides. When, as shown, the disc is downwardly domed, only the upper spring 23 acts on the disc 22 and the legs of the lower spring 24 act against abutments 26. The reverse happens when the disc is upwardly domed. In this way the disc is always pressed against one seat or the other only by the appropriate spring and the closure force is independent of the flexural strength of the disc. The floating support of the disc 22 also ensures that it snaps over at or very near the correct operating temperature.

Abstract: In a discharge device for a condensate operative within a given temperature range, and including a housing, a valve seat disposed in the housing, a closure part cooperating with the valve seat and subjected to an inlet pressure, a bimetallic snap disc carrying the closure part, being supported in the housing, subjected to the inlet pressure, and moving towards the valve seat upon an increase of temperature within the temperature range, the improvement includes an entrainment device carried by the closure part and connected to the bimetallic snap disc, wherein the closure part and the bimetallic snap disc define a central axis, and the closure part is movable along a path defined by the axis relative to the bimetallic snap disc, the bimetallic snap disc has an opening snap stroke, a closing snap stroke, and a snap stroke portion common with the opening and closing snap strokes, and exerting in a predetermined region a force in a closing direction, and wherein the valve seat is disposed within the predetermined

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: In a device for temperature responsive switching of overflow fuel quantities from a diesel fuel injection pump to a fuel supply tank or a filter of a fuel supply system a switching valve, arranged between the fuel injection pump and the tank, is actuated by a bimetallic element. Parallel to the switching valve is provided a throttle for continuous air venting. A pressure control valve with a low opening pressure is installed in the connection between the switching valve and the filter. The heated overflow fuel quantities are mixed with cool fuel from the tank and therefore the danger of clogging of the filter, which could be caused by paraffin separation, is substantially reduced.

Abstract: A steam trap with a closure element or valve disposed on the low pressure side cooperating with a valve seat, the valve being actuated by a control unit disposed in the high pressure chamber of the steam trap. The control unit includes a plurality of bimetallic spring elements each having a support portion and an operative portion and different actuation temperatures which act on the valve stem to close the valve on the valve seat. The support portions of the bimetallic spring elements engage a stationary support of said steam trap and the operative portions thereof engage the valve stem. The engagement of the bimetallic spring elements with the valve stem is such that when the valve is closed by the action of the bimetallic spring elements having the higher actuation temperatures, the bimetallic spring elements having the lower actuation temperatures are unaffected thereby and thus not stressed by the spring forces of the bimetallic spring elements of the higher actuation temperatures.

Abstract: A ventilator actuator is provided for opening and closing a ventilator opening having a diaphragm secured to a closure member mounted for pivotal movement about an axis to form a reservoir for a heat responsive fluid between them, the diaphragm normally being retracted at a first temperature and extended at a second elevated temperature. An actuating member has one end secured to the diaphragm and spaced from the pivotal axis, the other end of the actuating member is anchored such that when the diaphragm expands the actuating member causes the closure member to pivot to open the ventilating opening. When the diaphragm retracts the closure member is caused to pivot back to close the ventilating opening.

Abstract: A thermostatic valve including a housing that defines a housing inlet and a housing outlet and a valve body having an end wall and a side wall that define a valve chamber within the housing. The end wall defines an annular valve seat and a valve inlet opening encircled thereby while the side wall defines a plurality of valve outlet openings communicating with the valve chamber. Retained within the valve chamber is a resilient, annular seal encircling the valve inlet opening and a bi-metallic disc substantially parallel to the valve seat and normally spaced therefrom by a distance greater than the thickness of the annular seal. In response to a predetermined ambient temperature the bi-metallic disc deflects concavely into the valve chamber and into fluid sealing engagement wih one end of the annular seal forcing an opposite end thereof into fluid sealing engagement with the valve seat.

Abstract: A thermally powered change-over diffuser is disclosed which includes a housing having an outlet and movable blade assembly mounted with respect to the outlet for displacement between a first position producing a Coanda flow across a surface, such as a ceiling, and a second position producing a detached stream in a generally normally extending direction with respect to the surface. The diffuser is preferably thermally powered and includes a rapid change-over assembly enabling substantially immediate shifting between the two positions so as to provide a cooling mode of discharge and heating mode of discharge. Additionally, means for adjusting the volume of air discharged is provided.

Abstract: An improved thermally actuated valve assembly having a double throw feature comprises three ports in which two passage routes are provided through the valve; one passage route connecting ports one and two and the other passage route connecting ports two and three. A snap acting strip type bimetallic member vertically mounted in the valve serves as a thermal element and valve member to cause a change in communication from one of the passage routes to the other.

Abstract: In a freeze protection valve, a wax actuator is situated in a heat-conductive housing to which heat is conducted from the liquid system being protected. The housing prevents the actuator from triggering the valve to its opened condition while the liquid system is hot, but permits a rapid response when the liquid system is cool. In a snap-action freeze protection valve, the actuator is carried by the valve stem, and heat is conducted from the valve body to the valve stem through a sleeve through which the valve stem slides. The actuator moves a cam within the valve stem which operates a ball-type latch. The latch holds the valve in the closed position until the actuator releases the latch.Also disclosed is a remote-controlled valve operating mechanism which uses an electrically heated wax actuator to effect valve closure.

Abstract: A temperature responsive valve includes a bimetal disk which snaps in response to changes in temperature, a rod moved by the snapping action of the bimetal disk, a valve member in association with movement of the rod to thereby control the flow of fluid, and an adjustment member threaded through a body to properly adjust the range in movement of the valve member, the adjustment member being secured to the body after adjusting operation of the range of movement of the valve member.

Abstract: A thermally responsive fluid and electrical switch particularly for use in an automotive engine control system has first and second housing means each with an open-ended well, the housing means being secured together so that the wells cooperate to form a switch chamber. Fluid ports and terminal apertures open into the second housing means, and terminals are mounted in the terminal apertures to extend into the chamber. Valve and contact means are disposed in the chamber. A thermally responsive snap acting disc is mounted in the chamber in heat-transfer relation to the thermally conducting first housing to move in response to selected temperature changes and motion transfer means move in the chamber with the disc for moving the valve means to regulate fluid flow between the ports and for moving the contact means to regulate the flow of electrical current between the terminals.

Abstract: A thermally responsive valve assembly having two ports and a valve mechanism interposed between the ports. The assembly employs a bimetallic element assembly including a pair of dish-shaped bimetallic elements of different thermally responsive character. Both bimetallic elements are connected each other so that a snap length of one of the bimetallic elements is cancelled by a snap length of the other bimetallic element at a predetermined temperature. The former bimetallic element is operatively connected to the valve mechanism so that the valve assembly can restore its former position as the temperature is being increased and provide a series of three modes of operation in successive steps on an increasing degree of temperature.

Abstract: The temperature responsive valve device controls a fluid passage within a valve body by opening a valve member at a low temperature, closing the valve member at an intermediate temperature and re-opening the valve member at a higher temperature. The valve member is controlled by two bimetal discs each of which is adapted to snap over center at differently selected temperatures and springs associated with the valve member and one of the bimetal discs respectively.

Abstract: The bimetal-actuated temperature responsive valve assembly includes a body having inlet and outlet parts, a valve member for controlling communication between the inlet and outlet parts, a movable rod engageable with said valve member, a first bimetal disc engageable with the rod, a spring disposed between the body and the first disc for biasing the first disc, the rod and the valve member toward a closed position and a second bimetal disc operatively associated with the first bimetal disc for moving the first disc against the bias of the spring.

Abstract: An improved, dual function, thermal valve assembly has two passages and two valve mechanisms disposed in the passages, respectively. The assembly employs two thermally responsive actuating members which are actuatable to provide the dual functions in successive steps upon an increasing degree of temperature. The assembly is characterized by provision of a cavity to contain in isolation the thermally responsive actuating members from the passages to thereby avoid a tendency of thermal influence from the air flow passing through the passage.

Abstract: A snap-acting drain valve for draining a fluid system upon the occurrence of a predetermined temperature condition of the fluid. A spring-loaded valve is held closed against the spring force by a latching mechanism comprising a spring loaded latching lever engaging a shoulder on the valve stem, and a temperature sensitive actuator controlling movement of the latching lever. Upon occurrence of the predetermined fluid temperature, the actuator permits the latching lever to disengage from the valve stem shoulder, thereby releasing the valve which opens under spring force. The valve is non-modulating and will not close until manually reset even if the fluid temperature should increase to a level above the predetermined level.

Abstract: A steam trap has a control member which includes a bimetallic element at the prepressure side and a locking element, which is biased by the prepressure in an opening direction relative to a valve seat provided for the locking element. The bimetallic element is supported at one end on an abutment and it actuates the locking element with its other end. At least one snap spring which is supported on the abutment is effective on the control member in the direction of the locking element stroke axis, and it has a spring constant which is numerically larger than the spring constant of the bimetallic element.

Abstract: The thermally responsive valve device is comprised of a body having three passages therein, the first of which is adapted to be conected to a vacuum source while the second and third passages are each adapted to be connected to a suitable fluid operated device. The first passage is in constant fluid communication with two spaced apart fluid chambers within the body while the second and third passages are in selective communication with said chambers respectively. A valve member is located in each chamber for controlling communication of the second and third passages with their respective chambers. A pair of snapacting bimetallic disks are mounted in spaced relation within a third chamber in alignment with each other and each valve member. An operating rod is disposed in operative engagement between one of said disks and one of said valve members and a hollow tubular sleeve concentric with said rod is disposed in operative engagement between the other of said disk and the other of said valve members.

Abstract: A steam trap has a bimetallic control element provided on the prepressure side and a locking part which is biased by the prepressure in the opening direction and which is actuated by the bimetallic control element. The bimetallic control element is provided with at least one bimetallic snap disk and the valve seat is stroke-movably positioned, whereby the maximum stroke path of the valve seat is only a part of the operating stroke of the locking part.

Abstract: A thermally responsive valve includes first and second bimetallic disks which are adapted to snap-over in response to first and second predetermined temperatures. First and second inlet ports are connected to vacuum and atmospheric pressure sources respectively and first and second outlet ports are connectable to first and second vacuum actuators respectively. The thermally responsive valve further includes first and second valve members, one of which controls the communication of vacuum to the first vacuum actuator in response to the snap-over action of the first bimetallic disk and the other of which controls the application of vacuum to said second vacuum actuator in response to the snap-over action of the second bimetallic disk. When communication between the vacuum source and the first and second vacuum actuators is interrupted by said first and second valve members, the first and second actuators will be then connected to the atmosphere through the second inlet port.

Abstract: A temperature-responsive valve for controlling the flow of fluid comprises a housing having a chamber therein, an inlet port communicating with said outlet port communicating with said chamber and a temperature deflectable partition. When the temperature of the fluid transmitted to said partition reaches a first predetermined value, the deflectable partition snaps to restrict with its surface the flow of fluid into said outlet port and remains in that position until the temperature of said fluid transmitted to said partition reaches a second predetermined value. The deflectable partition then snaps to permit the full flow of fluid into said outlet port. The temperature-responsive valve is especially useful in showers for protecting users from discomfort or scalding in the event the temperature of the shower water rises above the desired value.

Abstract: A temperature-responsive valve for controlling the flow of fluid substantially without being affected by the pressure of or the turbulence generated by said fluid, comprises a housing having a chamber therein, an inlet port communicating with said outlet port communicating with said chamber, a temperature deflectable partition having an aperture and a tube. The tube extends from said inlet port past said aperture when the deflectable partition is in the position permitting a full flow of fluid. When the temperature of the fluid transmitted to said partition reaches a first predetermined value, the deflectable partition snaps to restrict with its surface the flow of fluid into said outlet port and remains in that position until the temperature of said fluid transmitted to said partition reaches a second predetermined value. The deflectable partition then snaps to permit the full flow of fluid into said outlet port.

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 temperature responsive valve assembly comprises a valve for controlling the fluid communication between fluid inlet and outlet passages containing therein a fluid to be controlled, a valve operating member operatively connected to the valve for operating the same in response to the temperature of a control fluid for controlling the valve assembly. The valve operating member is thermally separated from the fluid in the inlet and outlet passages so that it may sense only the temperature of the control fluid for controlling the valve assembly and the fluid to be controlled.

Abstract: A thermally responsive valve device comprises a body member having an inlet port and two outlet ports, a first passage connecting the inlet port and one of the outlet ports, a second passage communicating with the other of the outlet ports, a first valve seat positioned in the first passage, a first valve member movable into and out of engagement with the valve seat, a penetrating passage being provided through the first valve member and connecting the second passage and the inlet port, a second valve seat formed on the first valve member, a second valve member movable into and out of engagement with the second valve seat, first and second bimetal disks movable in response to variations in temperature. The first and second bimetal disks operating the first and second valve members to close and open the first passage and the penetrating passage respectively.

Abstract: A pneumatically and temperature controlled valve construction adapted for interconnecting a pneumatic source to a pneumatically operating device when said construction senses one of a pair of certain values of vacuum and a certain temperature regardless of whether the others being sensed or not being sensed. The construction includes a single housing, a pair of vacuum operated valve means nested in the housing and a temperature operating valve means nested in the housing.

Abstract: A temperature responsive valve assembly includes a body having an inlet port and first and second outlet ports, a thermostatic bimetal disk disposed within the body and responsive to a variation in temperature to change the curvature thereof from a first position to a second position, a first seat portion disposed within a first passage between the inlet port and the first outlet port, a second seat portion disposed within a second passage between the inlet port and the second outlet port, a valve member arranged between the first and second seat portions and engageable with both seat portions, a connecting means following the movement of the bimetal disk to thereby actuate the valve members between a first position wherein the valve member engages with the first seat portion to control the first passage and a second positon wherein the valve member engages with the second seat portion to control the second passage, a seat member having the second seat portion thereon and being adjustably threaded with the bo

Abstract: An improved thermally actuated valve assembly having a double throw feature comprises three ports in which two passages are provided among these three ports; one passage connecting ports one and two and the other passage connecting ports two and three. At a predetermined temperature a snap-acting bimetallic member causes a change in communication from one of the passages to the other.

Abstract: There is disclosed an apparatus and method for a thermosensitive safety valve to restrict a supply of fluid in a fluid delivery system when the temperature of the fluid reaches a predetermined temperature. A bimetal reed is utilized in which its unattached portion flexes outward from its normal, non-flexed position when the fluid temperature reaches a predetermined value into a flexed intermediate position with the mainstream of the fluid flow subsequently providing the pressing force for placing the unattached portion in a fluid restricting position. Furthermore, the reed may be reinstated in at least its flexed intermediate position so as to allow for subsequent fluid flow when the temperature of the same has been adjusted to a value less than the predetermined value of temperature.

Abstract: A fuel vapor vent valve comprising a plastic body including a base wall and a peripheral wall and a plastic cap including a base wall and a peripheral wall surrounding the peripheral wall of the plastic body. The peripheral wall of the base has a radially outwardly extending annular rib and the peripheral wall of the cap has a radially inwardly extending rib. The ribs are adapted to pass over one another to provide a snap fit during assembly. The base wall of the body has integral O-ring retaining means for retaining an O-ring. A bimetallic disc is positioned in said body within the confines of the peripheral wall of the body and normally engages said O-ring. Integral stop means on the cap are adapted to be engaged by the bi-metal disc when the disc is caused to move to a position out of engagement with the O-ring upon increase of the ambient temperature.