摘要:
An insulated lay-in diffuser comprising a housing having a shaped surface including a substantially centrally disposed collar and terminating at a mounting flange, and insulation material positioned on the shaped surface and extending between the collar and flange of the housing.
摘要:
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.
摘要:
A fire, smoke and air control damper is disclosed wherein one or more hook-shaped hinge portions formed intermediate between the longitudinal edges of each damper blade engage complementally configured hook-shaped hinge elements formed on opposite sides of the damper frame. A novel notch configuration is made in an inwardly depending flange in the frame on opposite sides, the hinge elements being made from at least a portion of the material notched from the frame. In the closed position, various blade portions engage opposite sides of the inwardly depending flange in the frame to form a seal therebetween, thereby providing a positive pressure resistant seal. The seal is made more complete along the flange in the area of the hinge element because of the novel notch configuration.Several embodiments of actuating the blades to move them between open and closed positions are disclosed. In one such embodiment, a link passes through an arcuate opening in the wall of the frame to engage a linkage rod. Alternatively, an external drive bracket is attached to the front surface of a blade and extended around the frame to form a rod and handle for actuating the blades.
摘要:
A novel telescoping heat responsive releasing device is described wherein a mounting member on which a bimetallic means is mounted slidingly engages a pawl member which is movable between a first position in which the pawl member is capable of being restained by the aforementioned bimetallic means, and an actuating position wherein associated apparatus connected to said releasing device may assume the desired heat responsive posture. Various alternate embodiments are illustrated wherein a plurality of bimetallic elements are utilized to engage the pawl member, wherein a bimetallic element is additionally actuated mechanically or electrically, and wherein various pawl and mounting member configurations are illustrated.
摘要:
A vertical wind turbine includes a blade which has opposite force producing sides that lie on opposite sides of the longitudinal axis along its direction of travel. The aerodynamic surfaces are driven by the wind through four phases of rotation. Driving torque is produced during three of the four phases. The blade includes a v-shaped nosepiece with rearward facing surfaces on each side that cup the wind during three of the four phases. The split tail of the blade captures the wind during a down wind phase of rotation.
摘要:
A windmill apparatus has multiple pairs of blades to enhance power output and lift performance. The apparatus has multiple double acting piston/cylinders actuated by the windmill, which includes several clutches that are used to engage and disengage the windmill from the motor.
摘要:
An intake and exhaust damper assembly has a motor and fan assembly pivotally mounted for movement toward and away from a louvered rotatable blade damper.
摘要:
A wind energy conversion system employs a wind turbine means mounted on a frame, said wind turbine having a venturi configured shroud with a core and a plurality of blades fixedly mounted between the core and the throat of the venturi. The blades have an air foil design consisting essentially of an inverted pan-shaped, cross-sectional configuration to create high torque at low air speed.
摘要:
A bladder-less counterpressure garment primarily used in the treatment of a victim suffering from hypovolemic shock. The garment is made of a compressible material, like foam, with a device for compressing the material. The garment is adapted to be positioned about the legs and abdomen of the victim by an adjustable fastener. The adjustable fastener or a separate pressure engagement device is engaged, compressing the foam and supplying the requisite counterpressure to increase blood circulation to the vital organs.