Abstract: A combination ultra-low volume aerosol generator and thermal fogger for dispensing a mosquito killing insecticide includes a power source which may be a gasoline driven engine and an air pump connected to the power source. The air pump drives a turbine pump which has a rotatable turbine wheel. There is a fluid pump connected to and driven by rotation of the turbine wheel. An insecticide formulation tank is connected to the fluid pump and provides insecticide to an atomizing nozzle and a thermal fog muffler and fog discharge. There is a flow selector valve connected to the fluid pump to determine which discharge device receives fluid insecticide. There is a volume control valve connected between the fluid pump and the flow selector valve.

Abstract: A tree trunk restraint collar for supporting young or transplanted trees or restraining established trees to a desired position. The preferred round collar is flexible and split at one place so that it may be twisted apart to be installed around the trunk. Thus placed, it is allowed to reform to its natural, circular shape. Some form of cord or wire is then looped through collar eyelets and around the outside middle of the collar, to secure the collar within its closed and circular condition at the one end of the cord and to secure the collar to support posts at the other end. The ring fits loosely around the trunk to allow growth and flow of natural fluids within the trunk. At the same time the ring guides and restrains the tree when forces such as wind, gravity, or the attraction of sunlight are exerted upon it. The device is economical to make and install and is effective in its function.

Abstract: A vessel for growing a plant, comprising: a base material 11 in the form of a vessel which is capable of accommodating therein at least a part of a plant; and a hydrogel-forming polymer 12 having a crosslinked structure disposed inside of the vessel-form base material 11 is disclosed. When such a vessel is used, a transfer operation for the plant can be automated, and any damage caused by transferring the plant can be reduced.

Abstract: A sod comprising a root support matrix that itself comprises a mixture of soil and/or sand, and shredded carpet fragments, wherein the shredded carpet fragments are from about one-tenth percent (0.1%) to about five percent (5.0%) by weight of the matrix; and a plurality of plants growing in said root support matrix, said plants having roots entangled with said shredded carpet fragments. The shredded carpet fragments comprise a mass of entangled face yarns some of which yarns have bits of carpet backing material attached thereto, wherein at least about ninety percent (90%), and more preferably at least about ninety-five percent (95%), of the bits of carpet backing material have no one dimension greater than about one-quarter (0.25) inch.

Abstract: The two piece tree syringe of the present invention can be used to inject a liquid agent into the living tissue of a tree. This tree syringe includes a barrel and a plunger. An hollow injection stem projects from the barrel. A passageway inside the hollow injection stem is separated from the interior of the barrel by a thin membrane in the barrel floor. The plunger is a double walled cylindrical container adapted to engage the barrel in a telescoping fashion. The drain stem is fixed to the inner wall of the plunger and can line up with and pierce the thin membrane in the barrel floor so that it can pass through the barrel floor and into the injection stem passageway.

Abstract: Moulded bodies are described which comprise a humus-containing plant substrate consolidated with polyurethane/polyurea, which are obtainable by slurrying a humus-containing plant substrate in water, admixing a liquid NCO prepolymer having a maximum NCO content of 15% by weight which has been produced by the reaction of toluene diisocyanate with a polyether polyol component containing at least one aminopolyether polyol in an amount of 0.5 to 100 mole % with respect to the polyol component, and introducing the mixture thus obtained into a mould and allowing it to solidify. A process for producing these moulded bodies is also described, as is their use as growth media for seedlings in the propagation and raising of plants.

Abstract: The invention relates to a plant growth substrate, comprising a coherent, hydrophilic matrix of mineral wool fibres mutually connected via binder based on furan resin, and to use of a coherent, hydrophilic matrix of mineral wool fibres mutually connected via binder based on furan resin, as a plant growth substrate.

Abstract: A nursery box comprising a growth substrate for rice, rice seeds and an aqueous formulation for treating said rice seeds to protect rice plants against insects for a prolonged period of time.

Abstract: A power window apparatus for detecting accidental pinching in a power window in accordance with the opened/closed position of the window and a state of rotation of a motor which is structured to improve the accuracy of the operation of a position sensor for detecting a safety-control suspension region for the window. A pair of contacts are disposed on the side surface of a main gear which is rotated by an output shaft of a motor for opening/closing a window. A conductive film opposite to the contacts is provided for a sub-gear engaged to the main gear through an interlocking gear and arranged to be rotated at different speed from that of the main gear. When the relative rotational operation between the main gear and the sub-gear causes the output shaft of the motor to reach a predetermined amount of rotation, so that the window has moved to a predetermined opened/closed position, the contacts and the conductive film are brought into contact with one another so that an electric signal is output.

Abstract: The present invention is a bi-parting door system for transit vehicles. It has two doors mounted for movement in opposite directions and a motor for opening and closing them. It has at least one lock having a lock member for locking the doors in a closed position. The lock member is biased toward the locking position and moveable to an unlocking position by an actuator controlled by a control system which also controls the motor. When the doors are closed they experience a biasing force tending to open them and this biasing force is reacted by the lock member to generate a load on the lock member which prevents it from moving as a result of a spurious signal to the actuator. Unlocking of the doors requires a door closing signal to be received by the motor to remove the load from the lock member, as well as an unlocking signal to the actuator. Hence, the doors cannot be opened by any one spurious signal to either the motor or to the actuator.

Abstract: A tilt sash counterbalance system has a carrier shoe with a locking cam that moves a locking component to a corner-to-corner locking position within a shoe channel. This is done by moving the locking component to a locked position where the locking component simultaneously increases both the width and the thickness of the carrier shoe. This presses the locking component into one inside corner of the shoe channel while pressing an opposite edge of the carrier shoe in a diagonally opposite direction against a diagonally opposite inside corner of the shoe channel.

Abstract: A driven hinge (20) has fixed and movable hinge sections (21, 28) that are arranged to be selectively rotated relative to one another about an axis (x.sub.1 --x.sub.1) between first and second relative angular positions.

Abstract: A wafer processing apparatus is provided with sealing ports between adjacent evacuatable chambers that are actuated to compress elastomeric seals carried by the valve sealing elements to differing degrees of compression, based on the amount of pressure differential between the chambers when sealed. The degree of compression is controlled so that less compression of the seal takes place when less is required to seal, such as with lower pressure differentials, thereby avoiding unnecessary fatigue and wear of and around the seals that would otherwise increase the generation of particulate contamination.

Abstract: An internally mounted retractable weather shield for protecting the interior of an outdoor structure from the elements, comprising a base panel; a mounting hinge for hingably mounting the base panel within the structure at a mounting point proximate an upper portion of the structure; the base panel being hingably movable between a stored position wherein the base panel is stored within the structure and overlying the interior and to a deployed position wherein the base panel extends from the mounting point substantially perpendicular to the interior so as to shield the interior from the elements; and wherein the base panel is alternately biased in at least one of a first and second directions via the mounting hinge.

Abstract: A basement unit comprises a reinforced concrete lower structural block having a floor portion and surrounding walls and at least one reinforced concrete upper structural block having surrounding walls and the same shape as the lower structural block in plan view. The upper structural block is stacked on top of the lower structural block with a seal member placed between the top end of the lower structural block and the bottom end of the upper structural block.

Abstract: A curtain wall having a mullion structure comprises bilateral mullions, a sash unit to be mounted to the mullions, the sash unit comprising a sash unit frame and a sash mounted to the sash unit frame, supporting members fixed to the mullions for supporting the sash unit frame, and a fixing member disposed for fixing one of bilateral side portions of the sash unit frame to one of the mullions.

Abstract: A construction block is disclosed along with a method of producing and assembling a plurality of the construction blocks where the blocks have internal cages around a central passage, said central passage opening to top, bottom or side openings in the blocks, and from which cage support rods extend to hook chain lifts to the blocks and to guide bottom openings of top blocks into predetermined alignment with the top opening of the bottom blocks. The casting technique allows not only for the novel lifting and alignment construction of the blocks, but also allows for novel external and internal features to be incorporated into the blocks, such as mounting bolts for interior walls and bricks or brick facades for the exterior walls of the blocks.

Abstract: A portable floor system has a plurality of modular floor sections each formed by floorboards and a subfloor for support and each having either a tongue or a groove at its periphery. A plurality of spaced-apart floor joists extend downwardly from the subfloor. The tongues and grooves are matingly arranged. Mounted to the undersurface of each floor section are one or more wedging clips configured to cooperate with a clip of an adjacent section to interconnect adjacent floor sections.

Abstract: A prefab building protective system is disclosed, where the building includes multiple frame members supporting an exterior water shedding skin formed of adjacent panels. Two adjacent panels define a seam thereby where rain water leakage may occur. The present invention involves a T-strip having a back plate with width equal to or greater than the width of a frame members, and supporting an upstanding spline sufficient in height to extend through the spacing between adjacent panel members abutted against both faces of the spline.

Abstract: A resilient portable sports floor system, more particularly one which is formed of a plurality of components which may be easily interconnected to form an integrated sports surface. The floor system includes a plurality of floor panels, each floor panel including a playing surface and four sides, at least one floor panel attachment mechanisms on each side of the floor panel, and a drive mechanism attached to each of said floor panels and attached to a floor panel attachment mechanism, the drive mechanism including a threaded rod. When the threaded rod is rotated it moves the drive mechanism with respect to the floor panel.

Abstract: A modular roll-out floor for use as a temporary, removable cover over an ice surface, the floor includes a plurality of interconnected and disconnectable treads. Each tread is made of three layers: a top portion is made of high impact plastic with an anti-slip surface on a honeycomb structural design for strength and rigidity, an intermediate portion designed as an insulating thermal barrier layer and a lower portion, which is also made of high impact plastic with a honeycomb structural design for strength and rigidity. The three portions are connected to each other. The treads may be connected to other treads to form a floor of any size. Living hinges on each tread allow the floor to be easily rolled up and stored.

Abstract: A damp-proof insulation brick cover having an empty space at the bottom of the dampproof brick cover formed of rectangular hexahedrons, formed as a unit including a pair of side walls, a pair of longitudinal walls, and an upper panel part. At certain intervals, a plurality of protruding parts are formed under the whole upper panel, wherein an insulation space is formed between said upper panel and upper part of said brick when the brick is inserted into the inner space of the brick cover.Slanted protrusions are installed between vertical protrusions at an upper part of both ends of the longitudinal walls of the brick covers, and a slanted protrusion is formed in one of said longitudinal walls, at the same height as the side wall slanted protrusion.When applied to the bottom part of a protection wall, the floor of which has lots of water permeating from underground, the brick cover prevents capillary action of water in the walls.

Abstract: A quick assembling coupling system for bar structures consists of an annular disk containing a number of radial sleeves having their longitudinal axes distributed about the annular disk such that the ends of the bars are held in the sleeves by a prismatic lock cover inserted in the center of the annular disk.

Abstract: A device for forming a framework of a wooden building including a steel pipe, screw bar, joint, bolt and joint stick. The steel pipe is tightly inserted in a hole formed at the top edge and/or the bottom edge of a vertical post. The screw bar connects two vertical posts in series as an upper half thereof is screwed into a screw hole of a steel pipe inserted into the bottom edge of a vertical post, while a lower half thereof is screwed into a screw hole of a steel pipe inserted into the top edge of a vertical post positioned below the former vertical post. The joint comprises a base portion and a flange portion oriented at a right angle with respect to the from base portion. The bolt passes through a hole of the base portion of the joint and a hole of the vertical post and is screwed into a screw hole of the steel pipe to secure the joint to the vertical post.

Abstract: A modular panel and method for constructing light fixtures. The modular panel includes an elongated main panel with a curved cross section. The panel is preferably manufactured using an extrusion process. The side edges of the panel feature a pair of spaced-apart lips defining an elongated slot or receiving area for mateably accommodating a cooperating side edge of an adjacent part or panel for a tongue-in-groove connection. The panel has evenly spaced fins along the surface to provide structural integrity as well as to scatter light passing through the panel. Multiple panels being assembled with adjacent intermediate adjoining panels forming a housing having a closed cross section.

Abstract: A fastening device for adjustably securing a flexible sheet comprising a first fastening component (62) having a recess (62a) formed therein. A portion of the flexible sheet is secured in the recess (62a) by cooperation of a second fastening component (61) after location of the portion in a desired position relative to the recess (62a). Canopies employing the fastening component are also disclosed.

Abstract: What is disclosed is a half-timber frame, compartment elements for a like half-timber frame, and a method for producing a compartment element, wherein boards of small-dimension timber are utilized for producing the half-timber frame supports as well as the compartment elements, such that a product which is considerably more economical than conventional solutions while having comparable thermal and acoustic insulation is obtained.

Abstract: A device for introducing sleeves into cases for compact discs and the like, includes an assembly for withdrawing each time a single sleeve from a storage device. The withdrawing assembly transfer the sleeves to a feeding surface, substantially horizontal, in the region of a line for feeding these sleeves to further processing devices. An inserting head with gripping means for keeping the sleeve fed to the feeding surface, and with folding rollers for folding two edges of the sleeve over fold-around pieces, takes over and inserts the sleeve into an underlying case. The inserting head is moved between a sleeves gripping position and a position in which it inserts the sleeve in the case, that is in open configuration on a conveyor.

Abstract: The present invention discloses a wrapping apparatus for wrapping a load of material comprising a traversing endless loop track, a wrapping medium dispensing shuttle able to navigate about the entire length of the track, and a plurality of individual retractable support stands aligned to form a retractable support table. The track is oriented to encircle the load of material while traversing the length of the load. The support stands are able to be individually biased between a raised and lowered position such that a gap between the support stand and the load is created allowing passage of the track therethrough. In operation, runner members are placed on the support stands and a load of material is placed atop the runners. The track is traversed along the length of the load and the shuttle is made to travel about the circumference of the track while dispensing wrapping medium therefrom onto the surface of the load of material.

Abstract: The present invention relates to a machine for forming packaging on the basis of film that includes complementary closure strips, the machine comprising: feeder means for feeding onto the film a closure means comprising two support webs provided with at least a first longitudinal assembly constituted by two complementary strips and with a second longitudinal assembly disposed at a distance from the first, urging means for urging the support webs towards each other between the two longitudinal assemblies, and two rectilinear guides suitable for penetrating respectively into the gaps between each pair of lateral edges of the support webs. The present invention also provides a method, the resulting packages, and closure means for this purpose.

Abstract: A controlled environment gassing system is provided for removing the existing environment from containers. The existing environment may be purged by passing the containers along a gas distribution manifold disposed parallel to the direction of travel of the containers. The manifold includes at least one region of flow resistance disposed parallel to the direction of travel, and the manifold may have a width less than the width of the container and/or screen openings sized to provide a laminarized flow, for supplying a controlled environment gas flushing stream continuously and at substantially steady state to the containers. As the containers pass along the manifold, the controlled environment flushing gas creates an optimal flow pattern which consistently and steadily removes the existing environment from the containers while preventing the flushing gas from drawing in air. Return gas chambers are provided to retrieve the gasses exiting the container as they are purged.

Abstract: An apparatus for and a method of covering a stack formed of articles supported on a support pallet with a stretch film, with the apparatus including at least four reefing fingers movable in horizontal and vertical directions for picking up a film cover in four corners of the cover in a bellow-like manner, and four rigid stretching elements associated with respective reefing fingers, with the method including moving the reefing fingers horizontally into four corner regions of the cover and placing the cover around the reefing fingers in a bellows-like manner, moving, before an end of the placing process, the stretching elements radially outwardly and above the respective associated reefing fingers and moving the stretching elements, after reefing and before start of a pull-over process, inward in a direction toward the stack until the stretching elements are located closer to the stack than the respective reefing fingers, moving the reefing fingers away from the stack and thereafter, pulling the cover over the

Abstract: The invention is a machine for tying up or hooping packing units with an elongated strip of binding material, such as bondable plastic. During operation of the machine, the strip is drawn from a take-up device of a supply roller through a strip conveyor device and a strip guide, then is wound around the packing unit as a loop. The loop is tightened by means of a tensioning assembly comprising a tension roller and a pressing device which presses the strip against the tension roller, such that the loop is placed under tension. Once the packing unit is tightly secured, the strip is sealed by means of a sealing device. The present hoop-casing machine permits a high tension force to be exerted on the strip loop to be sealed. For this purpose, the tension roller comprises on its peripheral surface a high friction surface. At least one rejecter is provided for preventing excess wear on the high friction surface during the tensioning step.

Abstract: A triplex trim mower (100) including a vehicle (102) having two front drive wheels (104) and one rear steerable wheel (106). Mounted generally forward of the front wheels (104) are two reel-type cutting units (108a) laterally offset about the longitudinal axis (110) of the vehicle (102). Mounted between the front and rear wheels and substantially centered between the forward cutting units (108a) is a rear reel-type cutting unit (108b). A lateral support frame (137) is incorporated into the main frame of traction vehicle (102). The cutting units (108) are supported by a lateral carrier frame (144) which is slidably engaged to lateral support frame (137) such that carrier frame (144) can move laterally relative to support frame (137). A hydraulic cylinder (158) permits carrier frame (144) to be laterally displaced under operator command. Second and third hydraulic cylinders (131) permit cutting units (108) to be moved between a transport position and an operating position.

Abstract: An attachment for a landscaping trimmer for use in precise trimming and edging of landscaped areas. The attachment has bores through an elongated body member which are adjacent to the free end of the body member and perpendicular to its axis. Pre-cut pieces of trimming line are secured through the bores by at least one screw positioned against the portions of the pre-cut pieces which are centrally located within the body member. Integral with the body member and on Its free end, the present invention may have a spacer for lawn cutting, or pointed bits with various surface configurations to perform functions including, but not limited to, "drilling out" weeds and unwanted grass in and around planters, flower pots and flower boxes, as well as tearing out unwanted roots near the surface of the soil.

Abstract: A portable, powered grass whip and a novel free-moving bracket for mounting the same to riding equipment such as a lawn mower. In addition, the grass whip in combination with a portable electric power pack.

Abstract: A non-row-sensitive forage harvesting header for attachment to a mobile frame carrying a chopper has a pair of rotatable cutting discs for severing stalks as the frame moves across a field. Positioned above the cutting discs are a pair of drum-shaped transfer devices rotatable in opposite directions about upright axes coaxial with the rotational axes of the respective cutting discs for gathering severed stalks to a central location between the devices. A pair of endless gripping elements extend about respective ones of the transfer devices and present opposed rearwardly moveable runs extending between the central location and the chopper when the header is attached to the frame. The opposed runs of the gripping elements are operable to cooperatively grip each gathered stalk therebetween while moving the stalk rearwardly from the central location to the chopper.

Abstract: A set of pans are provided for catching grain such as sunflower heads, that are broken from the stalks as they are being harvested. The pans are mounted onto the cutter bar and leave a space at the desired spacing of the rows of the crop being harvested. The leading ends of the pans are pointed, and have different tapers on each side. Every other pan is shorter than the intermediate pans, as well, for serving to guide the stalks positively into the slots for cutting. The pans catch heads of grain that might be broken or shaken loose and otherwise lost. The pans are pivotally mounted, quickly attached or detached, and the angle of the bottom of the pan can be adjusted.

Abstract: A method and apparatus for densification of fibrous material such as harvested cotton, preferably by a movement of the cotton continuously through a compacting zone on the harvester. In one aspect of the invention, the fibers are locked by differential translation of portions of the mass of compacted material to prevent a layer of material from springing back after compression. A continuous mat of compressed material with locked fibers is formed into a uniform, high density bale or module on the harvester. A cotton harvester compacting system includes an air system feeding harvested cotton into an accumulation area and to the compacting zone on the harvester. The cotton is compressed and fed through a shear zone which differentially translates the cotton and locks the cotton fibers into a uniform, compact mat. In one embodiment, the mat of compacted cotton is fed to a round baler on the harvester to form a dense round bale or module.

Abstract: A detachable broom head is provided for quick and easy attachment to a lawn and garden rake. The broom head is adapted to be removably mounted on the rake such that a dual purpose lawn and garden tool is created. In one orientation the tool functions as an ordinary lawn and garden rake. In a second orientation the tool functions as a broom. Therefore, it is possible to use a single lawn and garden tool for tasks that require both raking and brooming. Additionally, the broom head may be attached to the rake so that the bristles of the broom do not interfere with the normal operation of the rake. In one embodiment, a pair of attachment clips are provided on the broom head to grip the rake frame. In another embodiment, a coupler is provided to attach the broom head to the rake.

Abstract: An apparatus for wrapping fiber optic cable around an overhead line (A), has a carriage (1) which sits on the overhead line (A) and is movable along the overhead line (A). A supply of fiber optic cable (B) is located on one side of the carriage (1) and a counterbalance (3) for the cable supply is located on the other side of the carriage (1). A gear set (4) is arranged to the fiber optic cable (B) around the overhead line (1). A substantially constant tension is applied to the fiber optic cable (B) during all modes of operation of the apparatus.

Abstract: The lashing device has at least one supply reel, which contains a lashing element which is to be applied in a continuous spiral. The supply reel is mounted on a journal so that it can revolve about its longitudinal axis, and the journal, together with the supply reel, is arranged so that, with simultaneous longitudinal movement along the conductor, this journal wraps around the conductor in a rotating manner.

Abstract: A method for producing an electrically conductive compound yarn. An electrically conductive monofilament metal thread is spun into a compound yarn together with textile fibers. A compound yarn of this type is particularly suitable for producing woven and knit materials.

Abstract: A spinning machine having a drafting frame, a condensing unit at the downstream side of the drafting frame and a spinning station for winding up the yarn and imparting twist to the roving in forming the yarn. The condensing unit comprises a disk-shaped suction rotor oriented in a plane tangent to the output rollers of the drafting frame. A limited compaction zone is formed by a shield within a suction rotor and designed to apply suction only to a limited portion of the perforated periphery thereof. The pressing roller bears against the suction rotor at the downstream side of the compaction zone.

Abstract: A step bearing is provided for the end of the shaft of an open-end spinning rotor. The step bearing has a cartridge which is clamped fixedly by a cylindrical outer surface in a corresponding hollow cylindrical receiver surface of a supporting part. The cartridge includes a freely rotatable supporting ball for supporting the shaft; a thrust bearing screwed fixedly onto the cartridge for supporting the supporting ball; and a take-up receptacle for lubricating grease. The cartridge, including the supporting ball and the thrust bearing, can be exchanged for another cartridge with fresh lubricating grease.

Abstract: The fiber sliding surface and the fiber collecting groove of an open-end spinning rotor are provided with hard particles embedded therein. After a certain length of operation time of the spinning rotor, the particles in the fiber collecting groove have a larger particle size than the particles in the fiber sliding surface. Thus it is ensured that the fiber collecting groove has a better "grip effect" relative to the fibers to be spun than the smoother fiber sliding surface.

Abstract: A composite yarn includes a core composed of a continuous yarn, and a coated sheath composed of a matrix including at least one chlorinated polymer material, and a fire-retarding filler incorporated into and distributed within said matrix, wherein, in combination, the fire-retarding filler comprises a ternary composition which combines an oxygenated antimony compound, a hydrated metal oxide, the metal of which is chosen from aluminum, magnesium, tin, zinc and lead, and a zinc borate and, together with said ternary composition, the total weight content of inorganic matter in the yarn is between 4% and 65%.

Abstract: A device to hold roller chain is disclosed for holding roller chain in position for repair, maintenance, and the like. The device includes first and second jaws which are generally parallel. Each jaw has first and second ends, inner and outer faces, and two side faces. Each of the jaws has a primary gripping recess in the inner face near one end to grip the roller chain. Each jaw may also have a secondary gripping recess at the opposite end of the jaw. First and second shank members extend between the jaws and through at least one of the jaws. Each shank member has a cylindrical shank with external threads. The device has two shank channels, with each shank channel extending from the inner to the outer face of one of the jaws. The shanks pass through the shank channels. A pair of nut members engage the threads of the shanks adjacent to the outer faces. A coil spring surrounds each shank between the first and second jaws and biases the jaws away from each other.

Abstract: An improved combined power generation cycle has been provided for electric power generation from gasified solid fuel such as coal or biomass. The power cycle provided by the present invention does not require the use of high-temperature particulate control systems or wet clean-up systems. A high-temperature high-pressure gas stream is first cooled in a heat-transfer system and then cooled again by any one of a variety of methods before the particulate solids and hazardous air pollutants are removed in a low-temperature dry solids collector. Then, the clean gas is reheated in the same heat-transfer system and is ready for use in power generation. Net plant efficiencies can be improved by injecting water or steam upstream of the topping cycle power generating means.

Abstract: Disclosed is a fuel nozzle guide for use in gas turbine engines. The nozzle guide comprising an annular bushing sized for receiving a fuel nozzle, wherein the bushing has a first end and a second end, the first end being connected to a nozzle guide retainer. A flange extends radially from the second end of the bushing, wherein the flange has a proximal portion spaced proximal to the bushing, and a distal portion spaced distal from the bushing. The distal portion of the flange extends substantially parallel to a combustion chamber bulkhead heat shield. A plurality of radially extending ribs are disposed about the distal portion of the flange, each of the ribs having leading ends and trailing ends, wherein the trailing ends are arcuate in shape, thereby facilitating a reduction in film cooling air vortices as film cooling air passes between the ribs, and thereby assisting in the cooling of the bulkhead heat shield.