Abstract: An impact sensor system for a vehicle that includes a frame member having a cavity and a chamber arranged within the cavity. The chamber includes two ends with different cross-sectional areas. The impact sensor system further includes a sensor coupled to the chamber that generates a signal indicative of a pressure change within the chamber caused by an impact to the frame member.

Abstract: An extensible frame adapted to receive and maintain a rectilinear container applied upon an interior ledge extensible frame. Two or more orthogonally aligned sensor assemblies are provided to measure deflection of panels forming the container when a static or dynamic load is applied upon an uppermost panel. Each sensor assembly outputs a signal corresponding to a deflection of a panel induced by the load applied upon the uppermost panel. Signals output from the sensor assemblies are received and processed by an output processing unit in either a human cognizable or machine readable format. The amount deflection measured by the sensor assemblies corresponds to an amount of bulge of a panel when a defined load is applied.

Abstract: A sensing system has a sensor suitable for producing a signal relative to the sensing of a physical parameter, a power supply connected to the sensor, and a strobe interconnected to the sensor or to the power supply so as to pass power to the sensor so as to activate the sensor so as to cause the sensor to sense the physical parameter. The strobe intermitantly passes power at rapid rate to the sensor. A human interface device is cooperative with the sensor such that the sensor senses an operation of the human interface device. The sensor is a piezoresistive sensor. A processor is connected to the sensor so as to receive a signal from the sensor corresponding to the activation of the sensor by the strobe.

Abstract: A system for sampling a bale of fibrous material is provided including a transportation mechanism for moving the bale from a first point to a second point and a first gripper for obtaining a sample from the bale when the bale is at a position between the first point and the second point. The gripper includes a movable finger for gripping the sample from the bale. An actuator comprising an actuating rod is provided for pushing the sample away from the movable finger.

Abstract: A cycle life testing machine includes a controller, a clamping device, a driver, and a cycle device. The cycle device includes a servo motor, an actuator, a shaft, and a swing rod. The controller sends a signal to control the driver to trigger working of the servo motor, and the servo motor drives the actuator and the shaft rotate to swing the swing rod in a cycle procedure specified by the controller.

Abstract: An apparatus for automated inspection and repair of a tube sheet. The apparatus has a rotating gripper pod, comprising at least one tube gripper, a sliding body portion containing the gripper pod; a housing portion comprising at least one tube gripper and a tool head coupling. The tool head coupling swapably attaches to a eddy current test probe and at least one kind of tube repair tool. Novel, auto-locking tube grippers are also disclosed. A serial bus connects electronic modules within the apparatus and also connects the apparatus to an external controller.

Abstract: An arrangement for fastening at least one sensor to a face of a subject to acquire a signal indicative of one or more patient physiological parameter is disclosed herein. The arrangement includes a sensor holder for placing the sensor and having at least one fixing point. The arrangement also includes at least one ribbon being stretching for fastening the sensor holder by means of the at least one fixing point to an ear of the subject. Also a measuring assembly is disclosed herein.

Abstract: A process seal (24) for separating the flowing material in a test chamber (5) from an antenna element (19) used to emit or receive a signal propagating through the test chamber. The process seal (24) includes a circumferential groove (47) which retains a sealing gasket (26) that permits the process seal to be mounted within an opening (11) in the chamber (5). The gasket (26) is formed with a t-shaped cross section (56) in which the narrow portion (62) of the cross section is formed with an inclined sidewall 63 which abuts a similarly inclined sidewall (65) on the process seal lip (46). An inner lobe of the cross section (56) fits within a groove (47) that is formed adjacent to the bottom surface (45) of the process seal (24). Captive clamping knobs (72, 73, 74, and 54) or captive bolts (14, 15, 16, and 55) fasten a probe assembly (1) including the antenna element (19) and the process seal (24) to the test chamber (5). An alternative process seal (77) permits the use of an O-ring (78).

Abstract: A crank-type non-beam pumping unit, including a belt, a foundation, a crown sheave, a frame, a support rod, a belt pulley, a pin shaft, a crank, a transmission shaft, and a bracket. The bottom of the frame is disposed on the foundation, and the top of the frame is supported by the support rod. The top of the support rod is hinge connected to the frame, and the bottom of the support rod is hinge connected to the foundation. The bracket is disposed on the foundation, the transmission shaft is disposed on the bracket, and the crank is disposed on the transmission shaft. The crank rotates synchronously with the transmission shaft, and the belt pulley is disposed on one end of the crank via the pin shaft. One end of the belt bypasses the crown sheave, and is connected to a smooth sucker rod.

Abstract: The invention relates to a device for converting a rotational movement into a translational movement, said device comprising: a first element (303) that is rotated around a stationary center of rotation (401) by a rotation means (301); a second element (307) that is translated along a translation axis (311) by rotating the first element (303); a cam (305) that is rigidly connected to the first element (303), said cam (305) having a cam channel (306) in which a roller (308) moves, wherein said roller is rigidly connected to the second element (307). Said device is characterized in that the cam channel (306) has an inner surface (402) for contact with the roller (308), said roller (308) being in contact (500) with the inner contact surface (402) when the first element (303) is rotated in a first rotational direction (404), said inner contact surface (402) defining a curve of the type developing from a circle.

Abstract: An object of the present invention is to provide a compact motion conversion transmission apparatus which can set the transmission characteristic for motion or force as desired over a wide range. The apparatus includes input, intermediate, and output members which are fitted to one another while being aligned with an axis and move in relation to one another while being aligned with the axis. Further, the apparatus includes first transmission means which converts a first motion of the input member to a second motion and transmits the second motion to the intermediate member, the first motion being one of a rectilinear motion along the axis and a rotary motion about the axis, and the second motion being the other of the rectilinear motion along the axis and the rotary motion about the axis; and second transmission means which converts the second motion of the intermediate member to the first motion and transmits the first motion to the output member.

Abstract: A drive arrangement for a motor vehicle includes two driven axles, wherein at least one of the axles can be connected and disconnected, with a variable speed transmission having at least one input shaft, two driven shafts, each driven shaft driving a respective axle, and several forward gears and optionally one reverse gear which can be switched via gear wheels and synchronous couplings. The drive arrangement can be easily switched between different drive modes by dividing the variable speed transmission into two sub-transmissions, of which one sub-transmission drives exclusively a first axle via a portion of the forward gears and the one driven shaft and the second sub-transmission drives both driven shafts via the remaining portion of the forward gears and optionally the reverse gear.

Abstract: A drive train, which has an internal combustion engine with a crankshaft and a parallel shift transmission with two part drive trains, which each have one transmission input shaft. One shaft is formed as a hollow shaft around the other shaft, and a dual clutch, which is received rotatably on the hollow shaft, is connected to the crankshaft and has two friction clutches and two clutch plates each assigned to one clutch and are each connected to one transmission input shaft. Each clutch plate has a torsional vibration damper with a working range which is smaller than a maximum torque of the engine. A build-up of a combined vibration which has an axial vibration of the dual clutch and a rotational vibration of the drive train during an overlap shift operation is prevented by the design of the torsional vibration dampers for a smaller torque.

Abstract: A gear shifting device for shifting gears of a transmission includes: at least one guide rail each extending in a longitudinal axis; a plurality of shift effecting members configured to move a plurality of corresponding sliding sleeves coupled to the guide rail for shifting gears, the shift effecting members each having a terminal end portion with a finger receiving opening formed therein, the finger receiving opening extending in a direction generally parallel to the longitudinal axis of the guide rail; and a shift shaft extending in a direction generally parallel to the longitudinal axis of the guide rail, the shift shaft having a shift finger coupled thereto. The shift shaft is rotatable to pivotally position the shift finger at locations aligned with the finger receiving openings of the shift effecting members, and is also displaceable in the longitudinal direction in the finger receiving openings to move the shift effecting members to effect a gear shifting operation.

Abstract: A transmission control system to enable smooth engagement of meshing engagement device when establishing a forward gear position by engaging the meshing engagement device and a forward clutch while a vehicle is stationary. For example, when a synchro device is operated so as to establish a predetermined forward gear position, it becomes difficult to smoothly couple a first speed drive gear to the input shaft by the synchro device. However, temporarily engaging a reverse clutch during the process of operation of the synchro device allows a reverse torque to act on the first speed drive gear to apply torsion to a power transmission path between the first speed drive gear and a driven wheel. Furthermore, a repulsive force is applied and generates backlash between the synchro device and the first speed drive gear, thus enabling smooth operation of the synchro device.

Abstract: A gearbox assembly includes a pinion gear having a gear stem extending axially through a tubular output stem of an output member with a threaded portion protruding from an output flange of the output member. A pinion nut includes a threaded inner bore threadably engaging the threaded portion of the gear stem to retain the output member to the pinion gear. An outer rim of the pinion nut defines an outer circumference having a tool recess and a deformation spaced circumferentially apart from the tool recess. The tool recess is adapted for receiving a tool to rotate the pinion nut in a first direction relative to the gear stem. The deformation engages an inner circumference of the output flange to prevent the pinion nut from rotating in a second direction relative to the gear stem.

Abstract: A drive unit for driving a ring gear includes a motor, a transmission and a drive shaft, on which a pinion is arranged for driving the ring gear, wherein the drive unit includes a mechanical overload protection. In accordance with the invention the overload protection is arranged between the transmission and the pinion.

Abstract: A ball screw device for reducing damage to a circulating part even during a high speed operation is provided. To this end, the circulating part includes a pair of legs having a tang to scoop up a ball in a direction substantially match with a tangential direction of a spiral path, and a body to connect the pair of legs, wherein a center path diameter Rb of the ball, an internal diameter Rn of the nut, and an internal diameter Rt opposite to the tang satisfy a relationship of Rb ?Rt?Rn.

Abstract: This invention relates to mechanical linkages. The claimed linkages have a plurality of members that rotationally couple an extension member to a ground member. The linkages have relatively less inefficiency caused by inertia and from the placement of transducers within the linkage. Various coupling in the linkages may be powered, providing mechanical linkages that are suitable for use in haptic systems.

Abstract: The present invention provides a gear absolute position sensor assembly (GAPS) that senses the current absolute, position of the shift lever of a manual transmission. The sensor assembly provides data to an associated electronic controller such as an engine control module (ECM) regarding the current position of the shift lever, such as an engaged gear. The sensor assembly preferably comprises at least one Hall effect or other type of magnetic field (proximity) sensors in combination with an application specific integrated circuit (ASIC) which is supplied with data from the sensors, decodes the output of the sensors and provides an output identifying a specific engaged gear or neutral for use by vehicle or engine management electronics. The sensors are mounted proximate the shift linkage at a location where they can sense both rotation and translation.

Abstract: A bicycle operating device includes a housing, a control member, a linearly moving member, a transmission, a user operating member and an intermediate element. The control member rotates on the housing for controlling a control cable. The linearly moving member moves on the housing for linear displacement between first and second positions. The transmission operatively couples the linearly moving member to the control member. The transmission converts the linear displacement of the linearly moving member from the first position to the second position into a rotation of the control member toward a first rotational direction. The user operating member is movably mounted to the housing. The intermediate element moves relative to the linearly moving member and the user operating member to transmit a movement of the user operating member to the linearly moving member for moving the linearly moving member from the first position to the second position.

Abstract: A bicycle operating device operates a bicycle component by moving a winding member that moves a take-up member relative to a fixed member in first and second directions. A positioning member is movably arranged with respect to the fixed member between a non-holding position and a holding position to selectively engage a positioning ratchet that is fixed to the take-up member. In the holding position, the positioning member prevents the take-up member from moving in the second direction by selectively engaging one of at least three engaging portions of the positioning ratchet. A preventing member is movably arranged with respect to the positioning ratchet such that the preventing member prevents the positioning member from engaging an intermediate engaging portion of the positioning ratchet while the winding member moves the take-up member in the first direction.

Abstract: A bicycle cable structure is provided with an inner cable, a first outer case, a second outer case and an adjustment structure. The first and second outer cases are disposed over first and second sections of the inner cable and the adjustment structure is disposed between adjacent ends of the first and second outer cases. The adjustment structure includes a main body and an operating member. The operating member is movably connected to the main body by a non-slidable connection between a first position and a second position. The operating member maintains the adjacent ends of the first and second outer cases farther away from each other while the operating member is in the first position as compared to the second position of the operating member.

Abstract: A damping system for a shift cable is disclosed, in which vibrations and noises that are generated by a transmission and transmitted into the interior of a vehicle through a shift cable are considerably reduced across a damper, that is positioned in a bottleneck section of a socket housing and contacts with bottleneck section, such that it is possible to effectively exclude vibrations and noises transmitted into the interior of a vehicle. Further, the present invention is advantageous in terms of the cost and weight, because a rubber damper is used instead of a mass damper, and it is possible to reduce vibrations and noises without increasing force for operating a shift lever and maximally prevent the function of reducing vibrations and noises from being deteriorated by frictional wear.

Abstract: A parking brake actuator having a mounting bracket, an actuation lever, a cable, a cable reel, a tensioning spring, and a clutch. The clutch is configured for coupling the cable reel to the actuation lever when the actuation lever is pivoted to the working position and uncoupling the cable reel from the actuation lever when the actuation lever returns to the rest position. The clutch includes a first grip face fixed to the cable reel, a disk that is slidable along the pivot axis, the disk having a second grip face and being biased axially to have the second grip face engage the first grip face, and a driver that is fixed to the mounting bracket, wherein the driver axially moves the disk to disengage the second grip face from the first grip face when the actuation lever is in the rest position.

Abstract: An all terrain vehicle parking brake for after market installation on an ATV, UTV, RUV or MUV that relies on placing the vehicle shift lever in a park position to hold the vehicle on a hill. The parking brake includes a brake handle that is mounted to the vehicle dash board to pivot between brake engaged and disengaged positions, extending and retracting a linkage that connects and disconnects through a straight sleeve, with the linkage connecting to a rod end bearing that connects to a brake pedal arm, depressing the brake pedal when an operator activates the parking brake.

Abstract: A wrench assembly is mounted on a drill rig so as to have some freedom of movement in three axes. The wrench assembly includes a wrench subassembly having an upper wrench and a lower wrench. Both the upper wrench and the lower wrench are provided with jaw assemblies that are adapted to grip a pipe section or to release it. One of the upper wrench and lower wrench is pivotally moveable with respect to the other to apply a twisting force to a pipe section gripped by one of the upper and lower wrenches with respect to an adjacent pipe section gripped by the other of the upper and lower wrenches. The wrench assembly also includes a generally planar support table. The wrench subassembly is attached to the support table in such a manner as to allow the wrench subassembly to pivot about an axis that is perpendicular to the plane of the support table, and in such a manner as to allow the wrench subassembly to tilt with respect to the plane of the support table.

Abstract: This invention relates to tool for use in turning a valve stem of a gas cylinder. The tool includes a body having a first end and a second end. The body defines a longitudinal axis. The first end includes a slot formed therein defining a pair of opposed walls. The second end includes a bore formed therein which extends in a direction parallel to the longitudinal axis of the body.

Abstract: A universal joint includes first and second parts interconnected by a coupling element, and a coupling mechanism for detachably engaging tool attachments such as sockets. The disclosed coupling mechanisms include an engaging element and an actuating element. The engaging element can include a pin, and the pin can be oriented either obliquely or longitudinally in the drive stud of the universal joint. The actuating element can include a collar and a central portion that crosses the central longitudinal axis of the drive stud. The central portion can be offset along the longitudinal axis toward the coupling element, and the actuating element can be configured to extend into an aperture formed by the coupling element and the second part of the universal joint.

Abstract: An isolative torque-exerting apparatus includes a wrench and two isolating elements. The wrench includes a head, a handle extending from the head, a switch placed on the head, an insert partially inserted in the head, a ring placed against the insert, a first ring connected to the head for keeping the ring in the head, and a second clip connected to the ring for keeping the insert partially in the head. The first isolating element includes a cap for wrapping the head, a skirt extending from the cap, and a sheath for wrapping the handle. The second isolating element includes a first drum placed in the skirt, a second drum for wrapping the insert, and an annular membrane extending from the first drum to the second drum for covering the ring and the clips.

Abstract: A cutting insert includes a first surface, a second surface and a peripheral surface extending therebetween, and an insert hole extending between the first and second surfaces and having a hole axis. A cross section of at least a portion of the insert hole taken perpendicular to the hole axis has an oval shape. The cutting insert also includes a mark provided on at least one of the first and second surfaces, indicating the orientation of the cross sectional oval shape of the at least a portion of the insert hole.

Abstract: A kerf making machine includes a table. A slide assembly comprises first, second, and third slides. The first slide has a first stop and a first abutment on the end thereof. The second slide has a second stop oppositely positioned to the first stop. The third slide has a third abutment on the end thereof and is positioned relative to the first abutment a distance that is the exact distance of the desired distance. The slide assembly is reversed from its one side to its other side wherein the first slide, the second slide, and the third slide are positioned on the table.

Abstract: Provided is a printer in which a cut-off paper is pushed into a paper stacking portion without an additional power source while reducing the maximum load applied to driving means for driving a movable blade. A printer includes a movable blade for cutting a paper disposed between a fixed blade and a movable blade as it moves in a forward direction and separating a printed part as a cut-off paper; driving means for moving the movable blade in a reciprocating manner; a pushing member which is driven to push a cut-off paper in a thickness direction of the cut-off paper; a paper stacking portion for stacking the cut-off paper pushed by the pushing member; and a driving force transferring mechanism for transferring a driving force of the driving means to the pushing member to drive the pushing member.

Abstract: Embodiments provide various components of a chain saw, including saw chain elements, sprockets, and other fixtures, that may facilitate sharpening of cutter links during operation. In various embodiments, the components may increase stability during sharpening, provide nose mounted sharpening fixtures, and/or facilitate the resizing and/or reshaping of a sharpening element.

Abstract: An inductive or capacitative programming of a projectile is disclosed. A waveguide is used for the programming, the electromagnetic field being concentrated in the waveguide. The used programming unit includes at least one waveguide which is preferable located and/or integrated in the region of the muzzle, for example in front of the muzzle brake. A transmission coupler for the transmission is fed by a signal generator. The information relating to the projectile is modulated to the carrier frequency in the modulator. A reception coupler integrated on/in the projectile is electrically interconnected to a store or processor in the projectile. The reception coupler receives the modulated signal and transmits it to the processor which is where the eventual programming takes place.

Abstract: A device and method which combine electromagnetic acceleration with acceleration by high-pressure gases derived from chemical energy to achieve high slug speeds.

Abstract: The subject-matter of the invention is a ballistic protection grid for a vehicle comprising an access hatch received in an opening of the grid, wherein the grid and the hatch comprise bars separated from each other by an inter-bar distance, the protection grid being characterized in that the access hatch partially conceals the opening of the grid, each edge of the opening of the grid being separated from the sides of the hatch by a distance substantially equal to the inter-bar distance.

Abstract: An armor system with a composite laminate having at least four alternating layers (two bi-layers) of a first material and a second material, the first material having a lower acoustic impedance than the second material. The first material is a viscoelastic polymer with a glass transition temperature less than the expected operational temperature range, and the second material can be a hard material such as steel, aluminum, or ceramic. The laminate can include many alternating layers of elastomer and hard material, and can be adhered or affixed to a thicker armor substrate. Additional protective elements such as corrugated metal-ceramic panels and armored glass cylinders can be added to improve resistance to armor piercing rounds, explosively formed penetrators, or other threats.

Abstract: Described embodiments include a system, device and method. A described device includes a first material configured to reflect a substantial portion of a specified incident air blast wave energy. The first material includes a first reflective-region having a first acoustic impedance substantially mismatched to air's acoustic impedance. The first material includes a second reflective-region having a second acoustic impedance substantially less than the first acoustic impedance. The device includes a second material configured to attenuate the specified incident air blast wave energy utilizing an inelastic response. The second material is configured for wearing proximate to a human body. At least a portion of a back surface of the first material is proximate to a front surface of the second material.

Abstract: Reactive armor that includes a casing having a plurality of walls, a back, and a cavity formed therebetween; a cover that closes the cavity and forms a strike face; a filler placed within the cavity, the filler comprising a disruptive material; and an explosive. To defeat projectile or projectile related threats, the reactive armor substantially, but not necessarily wholly, implements laterally oriented force mechanisms, erosion mechanisms, and bulking mechanisms, e.g., explosive forces, with respect to the strike face.

Abstract: An automatic rifle bolt carrier with a fluted boss for the AR15/M16 family of firearms has been provided. The rear of the bolt carrier has been provided with a boss having bearing surfaces which are in operational contact with the interior of the host firearm's upper receiver to prevent the carrier from tilting while it is reciprocating during normal operation. The boss and rearward end of the bolt carrier are provided with flutes which allow water to flow between the buffer tube and upper receiver while the bolt carrier is reciprocating during normal operation, enabling a properly equipped firearm to be used during over the beach operations. The bolt carrier also includes a scallop cut located about the top of its backmost end which is perpendicular to the longitudinal axis of the bolt carrier.

Abstract: An annular piston system for a firearm comprises a barrel, a gas block assembly, a piston, and a spring. The barrel has multiple sections lengthwise, one of the sections having at least one gas port hole to vent gas from the barrel. The gas block assembly is disposed annularly around the barrel and is adjustable to control an amount of gas flowing out of the barrel through the at least one gas port hole. The piston is disposed annularly around the barrel and can move longitudinally along the barrel in response to being pushed by the gas flowing out of the barrel. The spring is disposed annularly around the third section of the barrel and coupled to the piston. The spring limits a distance that the piston can move longitudinally along the barrel when the piston is pushed to move by the gas flowing out of the barrel.

Abstract: A brake system includes a vacuum booster, a valve positioned within the vacuum booster, the valve including a valve member connected to a rod, the rod configured to move in a linear direction, an air filter positioned within the vacuum booster, and a return spring positioned within the vacuum booster. The return spring includes a first end and a second end with a plurality of coils extending between the first end and the second end. The first end includes a first coil and a second coil positioned radially outward from the first coil, and the first coil is configured to contact the rod and the second coil is configured to support the filter.

Abstract: A piston-in-piston hydraulic unit is disclosed that utilises an elastic volume to store and release energy with each stroke by varying the hydraulic fluid volumes in and out of the hydraulic unit.

Abstract: In a rodless cylinder 1, a band accommodating depression 60 having a transverse inner surface 62 extending along the width of a slit 12 of an inner hole 10 of a tube 2 and a wall surface 64 inclined with respect to the transverse inner surface 62 is formed on each side of the inner opening of the slit 12. In the case where one of the edges of the inner seal band 42 comes into contact with one of the wall surfaces 64, the other edge of the inner seal band 42 comes into contact with the other one of the transverse inner surfaces 62, while at the same time securing a distance I between the inner seal band 42 and an inner opening 58 of the slit 12. Once a fluid is introduced into the tube 2, the inner seal band 42 can be bent toward the slit 12 due to the distance I even in the case where one of the edges of the inner seal band 42 comes into contact with the transverse inner surface 62 and the other edge comes into contact with the wall surface 64.

Abstract: A diaphragm pump includes a pump chamber having an inlet opening and an outlet opening. A passive silicon check valve is provided at the inlet opening, and a passive silicon check valve is provided at the outlet opening. The diaphragm pump further includes a metallic pump diaphragm that adjoins the pump chamber.

Abstract: A drip bag having a bag body and a holder which is formed from a sheet material and is adhered to the bag body. The holder is folded into two parts, a front surface and a rear surface, on a center fold line, and the center fold line overlaps a lateral side of the bag body. V-shaped fold lines bent in V-shapes and extending from the open edge of the drip bag toward the bottom direction thereof are formed in regions on the side of the center fold line of the front surface and the rear surface of the holder. In addition, overhanging parts, which have concave portions for hooking, are formed in a manner that allows them to be pulled open on both the left and right sides of the lower end of each of the front surface and the rear surface of the holder.

Abstract: A dough forming apparatus for flatbread products, the apparatus having: a loading station; a pressing station; a discharge station; and a conveyor belt passing through the loading station, the pressing station and the discharge station; wherein the discharge station further comprises a heated discharge platen.

Abstract: A dough forming apparatus comprising a lower support frame, a lower pressing platen coupled to the lower support frame, and an upper pressing platen assembly positioned above the lower pressing platen. The upper pressing platen assembly further comprises a backing structure, an upper backing platen coupled to the backing structure, and a pressing plate removably coupled to the upper backing platen by vacuum or electromagnetic means. Means for heating the pressing plate, and shims for adjusting the flatness of the pressing surface are provided. A conveyor supported by the lower support frame is positioned to pass between the lower pressing platen and the upper pressing platen assembly. A method of adjusting the apparatus is also disclosed.

Abstract: A matchbox oven is disclosed. The matchbox oven includes a housing, a slider, a mover, a heat source and a blower. The housing includes a cavity having two openings. The mover moves the slider in and out of the cavity through the two openings. The heat source provides heat to the cavity for heating up any food item placed within the cavity. The slider includes multiple stoppers to serve as oven covers for preventing heat within the cavity from escaping through the two openings. The slider can also be utilized as a heat sink for lowering the cavity's temperature during oven operation. When a new cook temperature is substantially lower than the temperature of the cavity, the blower forces heated air within the cavity to exit through the two openings before the starting of and/or during the initial portion of a new cook cycle.