Abstract: A refrigerator includes a door with a transparent display assembly that includes a front panel defining at least a portion of a front surface of the door, a touch sensor disposed on a rear surface of the front panel to recognize touch manipulation, a rear panel defining at least a portion of a rear surface of the door, an insulation coating layer provided on a surface of the rear panel by a metal oxide to block heat from the outside, an outer spacer disposed between the front panel and the rear panel to provide a sealed space between the front panel and the rear panel, a display disposed in the sealed space, a light guide plate spaced apart from the display to brighten up the display, and a spacer supporting the light guide plate and maintaining a distance between the display and the light guide plate.

Abstract: A backdraft damper for permitting a flow of air in an outflow direction and preventing the flow of air in a backdraft direction, including a frame having a transverse opening allowing the passage of air through the frame; a plurality of blades, each blade extending across the frame and mounted to the frame about a central portion by pivot members, for rotation between an open position in which the blade allows air to flow through the frame and a closed position in which the blade blocks air from flowing through the frame, the plurality of blades including one or more first blades arranged to rotate in a first direction from the closed position to the open position; one or more second blades arranged to rotate in a second direction opposite to the first direction from the closed position to the open position; the backdraft damper further including a linkage between the one or more first blades and the one or more second blades to cause the first and second blades to together rotate between the closed and open

Abstract: An indirect light skydome with natural ventilation for building roofs consists a half sphere dome with a curved brim (101) and an air vent (102) around the dome (100), which attached to the horizontal circular base (6) with a fan shape opening to allow only indirect sunlight and connected to the tube for light transmission inside the building. The dome (100) is divided into transparent part (1) for receiving only indirect light and opaque part (2) for direct light protection, which are made into a single dome using a coating technique to prevent rainwater leakage in the joints. The shading part and the fan shape opening correspond to the sun's angle for effective direct light protection during the daytime and all year round. The air vent (102) is designed for effective air flow for stack and cross ventilation in all directions. The indirect light skydome with natural ventilation helps to reduce heat and increase quality of daylight.

Abstract: Fire-fighting wall casing for closed environments, constituted of a frame (4) housing, in its upper portion, a soffit (3) which slides downwards by way of a system of pulleys placed within the frame (4), in its central portion a shutter (1) which may be opened by a side-hinge system, in its lower portion a railing (2) sliding upwards by way of a side guide (8) a protection grid (7) which, after being disconnected from the railing, may be removed by way of side retainers; a magnetic switch (6) and a smoke and/or seismic detector being positioned in its upper portion; a fume deflector (9), intended for extracting fumes from the upper floors, being positioned above the casing.

Abstract: A sound-modulating device used in a confined space is provided. The sound-modulating device includes an event detector and an audio module in communication with each other. The event detector detects an event and generates a trigger signal in response to the detected event. The audio module plays a music segment in response to the trigger signal. The frequencies of the music segment range from 20 Hz to 20000 Hz. The intensities of the music segment are smaller than or equal to 75 dB.

Abstract: An actuator includes a capturing part, a retained part and a heating element which applies heat to the retained part or the capturing part responsive to selective application of power to the at least one heating element. The capturing part attaches to a first object and has a first coefficient of thermal expansion. The retained part attaches to a second object and has a second coefficient of thermal expansion. The retained part is insertable into the capturing part in a first state of the actuator. The retained part is held in contact with the capturing part via an interference fit to hold the first and second objects proximate to each other in a second state. The retained part is ejected from the capturing part in a third state. Applying heat via the heating element causes a transition between the second and the first or third states of the actuator.

Abstract: A smoke and heat evacuator that can be applied at an opening of a generally vertical wall of a closed environment, includes a supporting frame bearing a shutter, which oscillates between a normally closed position and an open position via at least one lateral linkage having a first arm that, in the closed position, extends obliquely, with a top end articulated to the shutter via a slider subject to the downward-thrust action of a spring and with a bottom end articulated to the supporting frame via a second lengthenable arm.

Abstract: A method for individualized control of means for closing off at least one window, by: determining coordinates of a dazzle cone associated with a window and with a dazzle-sensitive zone, the dazzle cone defined by a vertex positioned at the dazzle-sensitive zone and a directrix curve superimposed on the perimeter of the window; determining the orientation of direct rays of sunlight, and defined by a solar azimuth and a solar elevation; periodically checking whether the orientation falls within a predetermined dazzle cone; the directions of the rays of sunlight being parallel to one of the directions within the dazzle cone and passing through the vertex of the cone; and acting on closing-off means associated with the window for which orientation of rays of sunlight falls within a dazzle cone.

Abstract: High pressure gas vessels can have a sensitivity to temperature of the compressed gas. Over-temperature conditions in particular may cause decreased durability and/or vessel damage, including gas leakage to the environment. Articles of manufacture, methods, and systems are provided for over-temperature protection using a passive device. The passive closing device does not require electrical power and no controller, sensors, or wiring is needed. This affords cost savings in comparison to other systems. Pressure vessels using the passive closing device can protect themselves, independent of the compressed gas fueling station configuration.

Abstract: An active grille shutter system comprising a controller, a sensor provides a freeze signal to the controller when a temperature is near or below freezing, and an electric motor that opens and closes a plurality of vanes. The motor receives a low current signal from the controller to operate the system at a first torque level and receives a high current signal to operate the system at a second torque level when the controller receives the freeze signal. A precipitation signal from the windshield wiper system of the vehicle is provided to the controller to provide an indication that there is precipitation present in the vehicle environment. The controller may provide the high current signal to the motor only when the freeze signal and the precipitation signal are provided to the controller. A method is also provided for operating the system.

Abstract: Novel stowed staircases for attics and the like that exhibit highly effective fireproof properties are provided. The combination of sheet metal well sides with ceramic paper covering, a combination thermal board and cement-like construction door, coupled with a sealed gasket at the interface of the stair bottom with the ceiling provide the necessary long-term fireproof capabilities as well as facilitation in installation as a sufficiently lightweight article. In such a manner, the inventive stairway construction may be easily incorporated within a residential or other type unit to aid in the simultaneous accessibility to an attic (or like location) and ability to prevent fire from easily spreading into or out of said attic via the stair assembly itself.

Abstract: A fire protection device for an aircraft or spacecraft is disclosed. The fire protection device can include a fireproof bulkhead and an adjusting device, the fireproof bulkhead can be adjusted from a ventilating position I into a screening position II. This may prevent a stream of smoke and heat from penetrating into the cabin when there is a fire underneath the fuselage.

Abstract: A composite profile for a window, door or façade element includes first and second outer profile parts and at least one insulating strip connecting the first and second outer profile parts with an intermediate space defined between them for thermal separation. At least one outer profile part connecting element is disposed in the intermediate space so that it is normally not in contact with the first and second outer profile parts. An actuating element is disposed so that, upon being activated by heat, it moves the outer profile part connecting element into engagement with the first and second outer profile parts, so that the outer profile part connecting element connects the first and second outer profile parts.

Abstract: Methods and devices are provided for selectively allowing light to pass through a substantially transparent substrate or blocking the light, at least to some degree. Some embodiments provide a plurality of reflective vanes that can be positioned in at least two positions. According to some such implementations, when the vanes are in an open position, incident light is allowed to pass through the window. The light may reflect from two or more vanes before passing through the window. When a sufficient voltage is applied between vane electrodes and other electrodes, the vanes are pulled down, reflecting back at least some of the incident light. The voltage may be controlled according to detected temperature, ambient light intensity, etc.

Abstract: The present invention provides a high-frequency treatment apparatus including: an electrode assembly electrically connected to a high-frequency generating unit for generating a high-frequency current, the assembly having, at the distal end thereof, a current-applying electrode for discharging the high-frequency current, the proximal end of the current-applying electrode being covered with an insulator; an insertion section receiving the electrode assembly, the insertion section being located on the return side of the high-frequency current discharged from the current-applying electrode; a liquid supply section for supplying an irrigation liquid to the vicinity of the current-applying electrode; and an opening section provided at the distal end part of the insulator, the opening section supplying a gas to the vicinity of the current-applying electrode.

Abstract: This invention relates to a type of safety door central release device which can be used to close the safety door automatically when electric power is disrupted. It comprises a cord that is tied to a mechanism having potential energy on one end, and extended to a far distance on the other end; a pair of crank arms of which one end molded as a grip and gripping the cord, and the other end is connected to a sliding bar, having potential energy which assists the grip in release the cord. When electric power is supplied, the sliding bar will be attracted to an electromagnet. As a result, while electric power is disrupted, the release device can immediately release the cord. Due to release of the cord, a brake for a door operator is released by means of the mechanism such that the safety door slides down and then it is closed.

Abstract: A fire-resistant, aluminum, cementitious-material-free, insulation-free door adapted to prevent the spread of fire and heat passing therethrough, consists of: a door frame, a door hingedly mounted on the door frame, the door having a bottom wall, a top wall, and side walls, the bottom wall, top wall and side walls enclosing a hollow central core not containing substantial amounts of insulating material, the bottom wall having an outside surface, and the top wall having an outside surface; and a layer of intumescent material on the outside surface of the bottom wall. A heat-activated self-closing mechanism allows the weight of the door to close the door in the vent of fire, by releasing gas from a supporting gas spring.

Abstract: An electric tilling machine has a motor mounted on a machine body for rotationally driving a tilling shaft provided with tilling claws. A housing/cleaning box has an upper opening and is configured to receive therein the tilling shaft and tilling claws with the machine body closing the opening of the box. Front and rear locking sections lock the machine body to the housing/cleaning box with the tilling shaft and tilling claws housed in the box. A control section keeps the motor in a controllably operable condition while the machine body is locked in the housing/cleaning box so that the motor can be operated to rotate the tilling shaft and tilling claws within the box in a cleaning mode.

Abstract: A hydraulic fire door, especially a sliding door, which can be selectively opened or closed by an actuator. In order to ensure a particularly fire resistant fire door without the heat resistance of the basic structure thereof having to be particularly fire resistant, the actuator is arranged to supply aqueous liquid to the fire door in order to cool it using the aqueous liquid.

Abstract: An opening flap comprises a frame and a flap articulated thereto. A lift arm is provided, which is articulated by a principal energy accumulator. A secondary energy accumulator is articulated between the lift arm and the flap. The principal energy accumulator delivers the opening motion of the flap into a position before the dead center thereof. The secondary energy accumulator, which is distinctly weaker, delivers the subsequent opening motion.

Abstract: A fire-resistant, aluminum, cementitious-material-free, insulation-free door adapted to prevent the spread of fire and heat passing therethrough, consists of: a door frame, a door hingedly mounted on the door frame, the door having a bottom wall, a top wall, and side walls, the bottom wall, top wall and side walls enclosing a hollow central core not containing substantial amounts of insulating material, the bottom wall having an outside surface, and the top wall having an outside surface; and a layer of intumescent material on the outside surface of the bottom wall. A heat-activated self-closing mechanism allows the weight of the door to close the door in the vent of fire, by releasing gas from a supporting gas spring.

Abstract: A can and easy open closure for the can which is structured and arranged to cooperate with the can such that as the closure is removed from the can, gas is allowed to escape while the contents of the can, such as a powder, is prevented from escaping.

Abstract: The invention relates to a hydraulic fire door, especially a sliding door, which can be selectively opened or closed, and the fire door being provided with an actuator (3) for moving said door from an opened position to a closed position. In order to ensure a particularly fire resistant fire door without the heat resistance of the basic structure thereof having to be particularly good, the actuator (3) is arranged to supply aqueous liquid to the fire door in order to cool it using the aqueous liquid. The invention also relates to a fire protection system.

Abstract: This invention relates to a novel self-closing fire rated floor door. More particularly, this invention pertains to a novel floor door which uses fusible plugs and compressed gas cylinders for automatically closing the floor door when ambient temperature rises above a predetermined temperature, due to a fire. A self-closing fire rated floor door assembly comprising: (a) a fire rated frame with an opening therethrough; (b) a fire rated door hingedly connected to the frame and cooperating with the opening; (c) a fluid cylinder which is pivotally connected to the frame and the door, the cylinder when pressurized with fluid opening the door relative to the frame, and when depressurized, closing the door relative to the frame; (d) a fusible plug, rated according to a specific temperature, connected in fluid-tight manner with the fluid cylinder.

Abstract: A can and easy open closure for the can which is structured and arranged to cooperate with the can such that as the closure is removed from the can, gas is allowed to escape while the contents of the can, such as a powder, is prevented from escaping.

Abstract: A guiding structure for a moving member includes a cam groove in a slit shape provided in a fixed member, a shaft inserted into the cam groove and attached to a moving member, and a collar provided on the shaft to be rotated around the shaft while slidably contacting groove walls of the cam groove. Thus, without applying a lubricant to the shaft and the cam groove, the shaft can be guided with less frictional resistance with respect to the cam groove.

Abstract: A window jamb component assembly mountable in the jambs of a double hung window for cooperative engagement with the sash assemblies thereof. The component assembly includes a longitudinally elongated jamb liner having upper and lower segments comprising a pair of channel guides spaced apart by a profiled web. The profiled web defines sequentially aligned recesses, namely an inner weather stripping recess, a jamb filler recess and an outer weather stripping recess. A jamb filler, held by the jamb filler recess, provides a uniformly clad surface for the jambs to match the appearance of the trim of the double hung window. Frame weather stripping for sealingly engaging the sash assemblies of the double hung window is deployed and held in the inner and outer weather stripping recesses. Such assembly provides a visually pleasing finish for the window jambs, while providing improved cooperation between the window jamb and the sash assemblies.

Abstract: A drive for opening and closing a cover member in a motor vehicle has a lever which includes a detent device, for example a spring-loaded pin, which is pressed into a detent notch by force of a spring and is disengageable when a predetermined force is exceed and as a result disconnects an electric motor for opening and closing said cover member. It is therefore possible to open the cover member even when the electric motor fails, by disengaging the lever by hand, and the lever forms an overload safety device for the electric motor in the event of the cover member becoming jammed.

Abstract: A drop-out fire vent for a building has a plastic dome that softens and loses structural integrity with increasing temperature. However, the dome is prevented from dropping out by an internal trap door controlled by a fusible link that will release at a precise temperature. This allows the vent to be used in combination with sprinkler systems such as ESFR systems that require opening of the vent at a precise temperature after the sprinklers have been triggered.

Abstract: A door locking device for locking a door in predetermined, opened positions and automatically unlocking the door from the open positions in the event of a fire. The door locking device comprises a rotating body which includes channels and a support body which includes guide grooves separated by locking grooves. The rotating body and support body are operatively connected together. A locking device which includes locking balls mounted on springs extends through the channels for selective spring biased engagement of the locking balls with the locking grooves or guide grooves of the support body. A heat detection device is operatively connected to the locking device, the heat detection device including a heat-sensitive material. If the door locking device is exposed to a predetermined amount of heat, the heat-sensitive material loses its shape, causing the locking device to permit the locking balls to move from the locking grooves to the guide grooves for releasing the locking device.

Abstract: This invention relates to a fire barrier which includes a functional combination of at least one single-panel casement panel and a sliding panel which is connected or adjacent to it. The sliding panel, which can be automatically moved horizontally during normal operation, contains an auxiliary drive mechanism which, in an emergency, moves the sliding panel without an outside power source into the open position. The casement panel is moved simultaneously by a closing mechanism from its fixed or open position into the correct closed position to create or act as a barrier.

Abstract: An electromechanical locking mechanism for door leaves whose holding force can be adjusted continuously and which at the same time offers the possibility, when the locking mechanism is energized, of also releasing the closed door from and returning it to the locked position.

Abstract: A window equiped with heat effect automatic opening device is provided. The window comprises a rectangular casing composed of hollow interior frames, an exterior panel and an interior panel secured to the lower portion of the casing and a tempered glass for covering the upper portion slidably secured into the casing between the panel and suspended from a suspension system which includes a heat effect device therein to automatically open the window when the indoor temperature becomes higher than an infusion point, and a lift device disposed between the glass and the interior panel for manually opening or closing the window. The improvement is characterized in that when comes a fire alarm, the heat effect device will break off to set the glass free to open the window.

Abstract: Horizontally hinged covers for use in ceiling/floors are provided which are highly fire resistant and which in the event of fire automatically close. The door preferably utilizes a multi-layer construction comprising an intumescent lower (inner) layer, an intermediate structural layer and a top (outer) layer of a cementitious material. The horizontally hinged door utilizes an automatic closing system in the event of fire comprising a fusible link which activates a pressurized gas source to close the door and which pressurized gas source is automatically purged when the door is closed to prevent explosion of the pressurized gas source. The fusible link also actuates (opens) a hydraulic valve to allow the flow of hydraulic fluid from a pneumatic/hydraulic housing which is used with a movable rod to open and close the door.

Abstract: Release mechanism for releasing a door-spring blocked by a blocking device, which mechanism comprises a temperature-sensitive control element for direct thermal actuation, by means of which the mechanism intervenes in the blocking device at a predetermined temperature of that element such that the door-spring is released. The release mechanism comprises for instance a rod guided for movement in longitudinal direction between a first end position and a second end position under a first bias in the direction to this first end position, and a control element comprising an SME material which at the predetermined temperature encloses the rod under a second bias greater than the first and in opposite direction thereto, which rod is coupled to a control member of the blocking device, which control member keeps the blocking device in operation in the first end position of the rod and renders the blocking device inoperative in the second end position of the rod.

Abstract: The present invention relates to a method and hardware for bonding together nds of a sealing strip. The method of the present invention comprises the steps of cutting a slot in both a first end and a second end of a sealing strip, inserting an attachment strip having a plurality of engaging members into the slot cut into the first end, applying adhesive to the second end of the sealing strip, and placing the two ends of the sealing strip into an abutting relationship by inserting the attachment strip into the slot in the second end and sliding the ends together. The hardware used to effect the method includes an alignment guide having a substantially C-shaped channel for receiving the ends of the sealing strip to be joined together. The alignment guide has an end cap associated therewith having one or more slots for receiving a cutting tool for cutting slots in the ends of the sealing strip. The hardware further includes an attachment strip which is used to join the ends of the sealing strip together.

Abstract: A door lock structure includes a frame and a latch bolt carried by the frame for movement between retracted and advanced positions relative to a jamb. The bolt in its retracted position allows the door to open and when its in its advanced position blocks the closed door from opening. A first heat-fusible spring carried by the frame urges the bolt toward the advanced position. A lever pivotally carried by the bolt pivots between a first bolt blocking position and a second bolt freeing position. The lever has a second heat fusible spring carried by the bolt and acting on the lever for urging the lever toward the first bolt blocking position. The frame carries an actuator for pivoting the lever into the second position allowing movement of the bolt toward the retracted position. The lever also has a counterweight on the lever for keeping the lever in the first position to block retraction of the bolt in the event that the first and second springs melt.

Abstract: A device for automatically closing windows with vertically sliding sashes in the case of fire comprisesat least one spring compensator (9) removably engaged with a lateral upright (3) of the cased frame (2) of the window and having its extractable core (14) connected to the sliding sash (1),a cord (15) fixed at one end to said compensator (9), fixed at its other end to said cased frame (2) and passing about an idler pulley (16) fixed to said cased frame (2) in a position above the two ends of said cord (15) in such a manner as to keep it under tension and ensure that said compensator (9) remains engaged with said cased frame (2), anda thermosensitive element (17) interposed along said cord (15) and acting to break its continuity if the predetermined temperature is exceeded.

Abstract: A poultry litter is disclosed in two preferred embodiments: compacted peat in fragments ranging in nominal diameter from 1/8 of an inch to 11/2 inches, and compacted peat fragments combined with a conventional litter material such as wood shavings, with the peat accounting for at least ten percent of the mixture weight. In this latter case, the peat fragments preferably have nominal diameters no greater than 1/8 of an inch. Preferably the peat is of the reed sedge type, with a pH of from 3.5 to 4.5, and a moisture content of no more than fifty percent by weight. For enhanced capacity to absorb moisture and dust control, the peat fragments are provided with a coating of a feed grade petroleum based oil, vegetable oil or animal fat.

Abstract: A self-closing door sealing structure is provided with an arrangement for keeping a self-closing sliding fire door in close contact with a three-sided frame in a passage when the sliding fire door is closed so that no smoke or fumes may pass. A first unit is formed so that a sliding door (1) can be moved horizontally so as to be brought into close contact, when the sliding door is closed, with the three-sided passage frame via inclined guides (6) on a side post (18) in the passage frame and inclined guides (4A), (5) which are disposed at the upper and lower portions of the sliding door (1). A second unit is formed so that, when the sliding door (1) is closed, it press-contacts a retractable support frame (47) and an auxiliary frame (36). The auxiliary frame (36) is retracted into an inverted-L-shaped hook frame (32) by an inclined guide member provided behind the sliding door (1). In normal operation, the sliding door (1) is fully opened and held to enable a person to pass through the opened position.

Abstract: An air control damper is provided with an actuator coupled to a shaft for operating the blades of the damper. The actuator includes an electric drive motor that turns the shaft by way of a lever that is coupled to the shaft. The lever has a pulley at an outer end and a cable extends from the drive motor around the pulley and back to a fixed point adjacent the motor. When the motor is operated, the cable is wound around the motor drive shaft, pulling the lever towards the motor and turning the shaft. The arrangement provides a mechanical advantage in transmitting the motor output force to the blade actuating shaft.

Abstract: An apparatus is disclosed for releasably locking a fireproof door in an open position. A latch mechanism includes a hook connected to the door. The hook is releasably engaged with an actuator plate swingable between a latching position and a release position. Its motion is restricted by resilient means having bias adjustment means. A toggle mechanism keeps the actuator plate in its latching position until the toggle mechanism is struck by a remote-controlled solenoid plunger to release the door and let it close. If the solenoid malfunctions, the door can be closed manually with a force dependent on the setting of the bias adjustment means.

Abstract: A double hung window assembly (10) having a perimeter frame assembly (11) and a vertically slidable upper sash (12) secured in its raised or closed position by fusible link means (26) to the frame assembly (11). The vertically slidable bottom sash (13) has releasable catch means (42) for securing it in its lowered or closed position. Stop means (30) adapted to prevent the upper sash (12) moving beyond the lower sash (13) is present. Biasing means (40) are included with the bottom sash (13) to provide an elevated bias to it, sufficient to hold the bottom sash (13) in selected open or raised positions but insufficient to hold both the upper (12) and lower (13) sashes in an elevated position upon release of the fusible link (26) whereby when the assembly (10) is used and the bottom sash (13) is elevated, both sashes will move to their lower positions to provide a smoke ventilating opening thereabove.

Abstract: Damper blade actuator assembly for use in association with a damper having damper frame means adapted to be associated with an air duct system, and defining an air flow opening, and movable damper blade means operable for partially or completely obstructing such air flow, said actuator assembly comprising, a drive shaft adapted to be operatively coupled to suitable motor means for rotating said drive shaft in either direction, an operating arm swingably mounted adjacent said drive shaft and being rotatably movable relative to said drive shaft and connectible with said damper blade means, a coupling arm attached to said drive shaft for rotation therewith adjacent said operating arm, spring means connected between said operating arm and said coupling arm, said spring means urging said operating arm to move independently of said coupling arm in a direction tending to close said damper for emergency operation thereof while said coupling arm remains stationary, condition-sensitive retaining means connected between

Abstract: A door latch mechanism for controllably securing a door, the latch mechanism of the type having a spindle and operating handles, comprises a fusible connecting member rigidly attaching the handle and spindle at room temperature, the fusible connecting member melting at elevated temperatures to permit relative rotation of the handle and spindle. The handle is mounted using a connecting member which is attached to the latch trim using a screwless connection. This is particularly applicable to latches using lever handles in that a positive positioning mechanism holds the handles at their selected positions, regardless of wear and age.

Abstract: A damper assembly is provided which comprises a duct having an opening and a blade movable between a closed position in covering relation to a portion of the opening and an open position. A fusible retainer holds the blade in its open position and releases the blade when the retainer is sufficiently heated. When released, the blade is urged to its closed position by a hinge member which connects the blade to the duct. The blade in its closed position cooperates with the hinge member to substantially prevent flow of fluid through the opening.

Abstract: A heat responsive fire extinguishing system is disclosed which includes a delivery tube, supported relative to and about the ceiling of a passenger compartment, for example, of an aircraft or other vehicle such as a boat.

Abstract: Push rod of panic-type latching device contains a fusible section which melts in the event of a hot fire so that the temperature will not cause elongation of push rod to disengage upper door latch.

Abstract: A door opening mechanism for partially opening a door on a toaster oven wherein the oven includes a thermal timer for controlling the operation of the oven in a toast mode. The door opening mechanism includes a first lever held in a first position by the timer wherein the first lever is released upon termination of the toast mode. The mechanism further includes a resiliently biased slide held in a first position by the first lever and released to a second position upon completion of the toast mode. The slide is mechanically coupled to a lever assembly that includes second and third levers and a cam lever. The third lever and the cam lever are mechanically coupled to the oven door and are resiliently held in a first position to hold the door closed and resiliently moved to a second, door open position upon release of the first lever. The mechanism turns the mode selector switch to the off position once the toast has been removed from the oven and the door closed.

Abstract: A novel operator for use with a damper is disclosed comprising a plurality of pivotally interconnected damper operator members which are pivotally associated with the damper blade linkage and frame, such that they may be moved to an over-center locking position to lock the damper blades in their desired fire actuated positions. The operator also comprises an actuator means for selectively acting through the operator to control the degree of blade opening, and a releasing device for responding to various activation conditions, such as heat, for disengaging the actuator from the operator members to facilitate closure and automatic locking of the blades. The operator members may also be springed biased to automatically accomplish blade closure.