Abstract: The present invention relates to an exhaust closure system (10) for a cooking oven. Said exhaust closure system (10) is inter-connectable or interconnected between a top wall (30) of an oven cavity (40) and an exhaust channel. The exhaust closure system (10) comprises a lower casing (12) attachable or attached on the top wall (30) of the oven cavity (40) and including at least one inlet opening (22) in its bottom side. The exhaust closure system (10) comprises an upper casing (14) connectable or connected to the exhaust channel and including at least one outlet opening (24) in its top side. The lower casing (12) and the upper casing (14) are permanently or detachably jointed and form a housing of the exhaust closure system (10). A stationary plate (16) and a sliding plate (18) are arranged inside the housing and between the inlet opening (22) and the outlet opening (24). The stationary plate (16) and the sliding plate (18) lie against each other and include at least one opening (26, 28) in each case.

Abstract: An illustrative damper system includes a damper blade that is configured to be positioned within a duct, such as a bypass duct of an HVAC system. A shaft is in communication with the damper blade, and an actuator or force adjustment mechanism is in communication with the shaft. The actuator or force adjustment mechanism may include a housing and a spring therein, where the spring is in communication with the shaft. The shaft, the damper blade, and the spring may be configured such that the shaft may affect movement of the damper blade about a rotation axis offset from a diametrical axis of the damper blade.

Abstract: A damper positioning lock includes a plate having a plurality of recesses along an arcuate edge and a damper positioning handle pivotally associated with the plate. A mechanism is associated with the handle for selectively engaging a selected one of the recesses.

Abstract: An air diverting system for a seed dryer bin having a duct connected to and in communication with openings in the seed bin and a fan. An airflow diverter assembly rotatably mounted within the duct and having a handle for rotating the assembly to a desired position.

Abstract: A wood stove damper assembly includes a damper plate, a through shaft, and a cross shaft. The damper plate includes a plurality of risers and a plurality of through shaft guides. The through shaft includes a bore and the cross shaft is configured to engage the bore and the risers. The cross shaft is inserted through the bore in the through shaft such that the cross shaft engages the risers when installed. The damper assembly also includes a fastener applied to the end of the through shaft. When installed in a chimney pipe, the fastener is tightened to pull the through shaft, which pulls the cross shaft against the risers, which pulls the edge of the damper plate against the interior of the chimney pipe to hold the damper plate in any position. Methods for manufacturing and installing a damper assembly are also disclosed.

Abstract: The present invention relates generally to 90% Annual Fuel Utilization Efficiency gas or oil burning devices that depend on external air for combustion. More particularly it discloses an alternate intake apparatus for air for combustion that opens automatically when the inlet air conduit from outside is blocked or severely restricted.

Abstract: A candle fuel element includes a wick-holder assembly having a longitudinally disposed wick spaced from a heat-conductive element and a first solid fuel charge disposed between the wick and the heat-conductive element. A second solid fuel charge slidably engages and at least partly surrounds the wick-holder assembly. The heat-conductive element is disposed between the first solid fuel charge and the second solid fuel charge. The heat-conductive element defines a lateral opening adapted to allow fluid communication between the first solid fuel charge and the second solid fuel charge.

Abstract: A damper regulator device for adjusting the orientation of a damper blade in an air transfer system, such as a duct, is disclosed. The regulator is coupled to an end portion, of a damper shaft, pivoting of a handle component of the regulator functioning to turn the shaft and hence the blade. The device is adjustable to accommodate damper shafts of different configurations and sizes without disassembly of the device by shifting the handle between one or another of a pair of slots disposed at disparate distances from the shaft. The shifting of the shaft between slots in effected by a channel extending between the slots.

Abstract: A candle arrangement having a main candle body having a relatively high melting point and the main candle body has an aperture therethrough and a plurality of burning candles having a candle wax with a lower melting point than the main candle body are slidably mounted in the aperture. The burning candle at the top of the main candle body may be burned and then discarded after it is consumed and replaced with a new burning candle.

Abstract: A barbeque grill including a lower housing, heating means and food support means positioned within the lower housing, an upper housing or hood adapted to enclose the lower housing, a smoke exhaust means provided in said upper and/or lower housing for allowing smoke to escape from within the barbeque grill, wherein said smoke exhaust means is retractable/collapsible in order to allow the oven or grill to take up the least amount of space when being stored or transported.

Abstract: A composite amplifier is constructed by connecting the respective input terminals of a high-frequency amplifier and a precision amplifier together and by connecting the output of the precision amplifier to the offset trim port of the high-frequency amplifier. The amplifiers are structured such than a pole in the frequency response curve of the high-frequency amplifier cancels a zero in the frequency response curve of the precision amplifier, thereby producing a single pole roll off response curve for the composite amplifier. In the preferred embodiment the high-frequency and precision amplifiers are formed on a single chip and the pole-zero match is therefore maintained at all conditions of temperature and other variables.

Abstract: An indicator for a fireplace damper door includes a spiral wire and a contact arm that may engage the wire. The arrangement is such that upon a multiple number of rotations of the contact arm, continual contact is maintained. The arm and wire are is an electrical series circuit with an indicator lamp, which will be illuminated when the damper is opened.

Abstract: This invention provides an adjustable damper having a tubular duct section defining first and second diametrically opposed openings and first and second sets of detents formed radially from the material of the duct about the respective openings to define a plurality of damper settings. The first detent set is offset angularly relative to the second detent set and a valve element is provided having a circular central portion proportioned to fit within the duct section. Diametrically opposed first and second shoulders project from the periphery of the disc and aligned first and second stub axles are formed from the material of the disc and depend from the respective first and second shoulders. These shoulders are engaged with the respective first and second sets of detents such that in any one selected angular position of the valve element, the element is located by engagement of one of the shoulders in one of the detents of the detent sets.

Abstract: There is disclosed an extension apparatus for a damper assembly having an extension member for effectively extending the damper assembly control shaft and a securing member for securing the extension member onto the control shaft.

Abstract: A flexible disk damper which is capable of providing tight seals for a large diameter opening over a wide range of temperatures. Disks are made sufficiently flexible to compensate for inherent warpage in the damper seat by using a steel with a higher yield strength. Additionally, a varying cross-sectional thickness of the flexible disk is provided to ensure that unit stress is not exceeded along any point of the radius of the flexible disk for the deformation required to provide a tight seal. A pneumatic cylinder is utilized to provide a constant pressure to the flexible disks. A damper seat is fabricated from a cut plate or flat bar which is formed in an annulus. A deflection cone is utilized to deflect flue gases. The flexible disk is coupled together by bolts which are disposed in holes sufficiently large to allow independent movement of the disks to maximize deflection.

Abstract: A damper for adjusting and balancing the air flow rates in air conditioning and similar large gas flow systems is disclosed which comprises at least one pivotable blade located in a frame which is capable of being fitted onto or into one of the ducts in said system so that said blade pivots between fully open and closed positions. Associated with the blade is an adjustment device adapted to permit the blade to be easily rotated and locked in an intermediate position whereby said balance is achieved.

Abstract: Disclosed herein is an indicator system and linkage for a fireplace damper whereby the open and closed modes of a fireplace damper are readily indicated without the necessity of inspecting the damper itself. The apparatus includes a series of links which alternatively expose a pair of indicators which reveal the mode that the damper door is currently in.

Abstract: A damper type control for furnace flues which opens with commencement of oil burner operation and closes when combustion ceases. The damper is operated solely by the presence of draft created by the oil burner blower, and closes in the absence of such draft under the influence of a counterweight. With the occurrence of wind passing the open end of the flue, the pressure differential on either side of the damper also assists in maintaining the damper in closed condition.

Abstract: A flue restrictor for installation in the flue piping of a heating system to reduce its effective cross sectional area comprises sheet metal inlet and outlet sections having flanges secured together in a joint that has a guideway in it for a sheet metal gate valve that may be transversely positioned to produce the desired cross-sectional area and riveted in place to provide a substantially tamper-proof assembly.

Abstract: A thermal damper assembly mounted to substantially close a flue at room temperature is equipped with thermally responsive coils to move the damper to an open position in response to heat generated by combustion. To allow commencement of combustion the damper assembly is equipped with latch means to position the damper open in preparation for combustion, said latch means responding automatically to an adequate advance of said damper toward its fully open position to disable its own latching capability whereby said coils are permitted to substantially fully close the damper assembly without further attention to the latch means, which serves only to releasably position the damper assembly for commencement of combustion. Also illustrated in this application are various position control members for predetermining fully open and substantially fully closed damper positions. Also illustrated in this application are inboard and outboard mountings for the thermally responsive coils.