Abstract: A battery powered tool includes a housing adapted to carry a battery. A shaft having first and second ends is connected to the housing at the first end thereof. A first mechanical joint is adapted for rotatably receiving and supporting an attachment. The first mechanical joint is mounted at the second end of the shaft. The first electrical connector contained within the first mechanical joint is adapted to cooperate with a second electrical connector in the attachment to provide electric thereto. A first electrical conductor extends within the shaft from the housing to the first electrical connector for carrying electric current from the battery to operate the attachment. A second electrical connector engages with the first electrical connector, and is connected to a boom. A second electrical conductor extends within the boom, and the other end of the boom carries a hedge trimmer, a line trimmer, a pruner, a blower or an extension.

Abstract: In a portable work machine having a prime mover, a driven unit such as a fan to be driven by the prime mover, a machine case made of synthetic resin and including an inlet port case, a central case and an engine case, a bottom portion of the central case is integrally formed with stands each having a hollow which opens at one side end of the bottom portion. A cutting is formed in the bottom portion to provide the hollow with an upper wall which opens partly. The bottom of the stand is formed with a raised edge.

Abstract: An attachment device for a cleaning apparatus including an attachment comprised of a head portion. The head portion has and upper surface and a lower surface. A clamp assembly is comprised of a pair of clamping members dimensioned for coupling with a cleaning apparatus. Each clamping member has a tab extending upwardly from upper ends thereof. Each tab has a threaded aperture therethrough. A thumbscrew extends through the threaded apertures of the tabs for securement of the pair of clamping members to the cleaning apparatus. The clamp assembly is coupleable to the attachment.

Abstract: A blower is provided having a plurality of tubular nozzles removably attachable to the blower enabling an operator to easily vary the velocity and air discharge pattern. The blower forms part of an operator carried power tool having a drive motor spaced from the blower assembly by a tubular boom containing a drive shaft. The blower comprises a blower housing having an axial air inlet and an air outlet defined by a tubular section. An impeller is pivotally mounted within the blower housing and driven by the drive shaft. As the impeller is rotated, air is drawn through the air inlet and discharged through one of a plurality of tubular nozzles mounted on the blower housing tubular section. Tubular nozzles have varying geometries to conveniently vary the discharge air pattern.

Abstract: An improved blower for moving debris on a surface is provided. The blower includes a frame mounted on wheels and a motor mounted to the frame. A blower housing with an inlet opening and a discharge chute is also mounted to the frame. A fan is located in the blower housing and is drivingly connected to the motor to generate an air flow having a predetermined volumetric flow. An adjustable height, pivotable deflector is mounted in the discharge chute to split the air flow into upper and lower portions. The deflector is pivotable from a first, downwardly inclined position, to concentrate the lower portion of the air flow along the surface to create a lifting force for lifting and moving the debris while the upper portion of the air flow moves the debris outwardly, to a second position, in which the pivotable deflector is upwardly inclined to create an expanded air flow profile. The deflector height is adjustable to adjust the volumetric flow of the upper and lower portions.

Abstract: A blower vacuum attachment for use with a multi-purpose power tool having a motor for powering the attachment on the elongated tubular boom extending between the attachment and the motor through which a drive shaft extends. The attachment includes a tubular connector for attaching a blower housing to the tubular boom. The blower housing has an axial air inlet and a circumferential air outlet. An impeller oriented within the housing and driven by the drive shaft draws air into the axial air inlet and discharges air to the air outlet. An intake tube is affixed to the blower housing inlet and extends axially therefrom. A debris collection bag and a blower tube can be alternately attached to the blower housing air outlet so that the blower vacuum attachment could be used respectively as a vacuum or as a blower.

Abstract: A hose for capturing and redirecting exhaust gasses of a motor vehicle for heating purposes. The hose is pliant and heat resistant. Apparatus for removably connecting to exhaust pipes of different diameters is provided at one end of the hose. This apparatus includes a manual, self-tightening clamp. A nozzle and handle are provided at the other end of the hose. Optionally, the hose has an extension removably insertable into the nozzle.

Abstract: An improved convertible electric blower/vac. The blower/vac includes an improved air inlet cover with an adjustable choke member. The air inlet cover also includes a pressure ring for increasing the efficiency of the blower/vac impeller when the unit is operated in the blower mode. The blower/vac also includes a blower tube and a vacuum bag collar, each with resilient tabs that engage receptacles on the blower/vac to retain the blower tube and vacuum bag collar on the unit. The housing outlet of the blower/vac includes guides that interact with longitudinal ribs on the blower tube and the vacuum bag collar to reduce unwanted rotational deflection of the blower tube and vacuum bag collar when either is engaged on the housing outlet. The blower/vac includes an improved vacuum tube for use of the blower/vac in the vacuum mode.

Abstract: A debris blowing apparatus with a motor, a fan driven by the motor, an inlet to the fan and an air outlet from the fan. A portion of the air which is emitted through the outlet is recycled through a metering aperture into the air inlet to maintain a constant load on fan whilst varying the air output.

Abstract: An improved convertible electric blower/vac. The blower/vac includes an improved air inlet cover with an adjustable choke member. The air inlet cover also includes a pressure ring for increasing the efficiency of the blower/vac impeller when the unit is operated in the blower mode. The blower/vac also includes a blower tube and a vacuum bag collar, each with resilient tabs that engage receptacles on the blower/vac to retain the blower tube and vacuum bag collar on the unit. The housing outlet of the blower/vac includes guides that interact with longitudinal ribs on the blower tube and the vacuum bag collar to reduce unwanted rotational deflection of the blower tube and vacuum bag collar when either is engaged on the housing outlet. The blower/vac includes an improved vacuum tube for use of the blower/vac in the vacuum mode.

Abstract: A debris blower and/or vacuum device is disclosed which comprises a motor unit which drives an impeller. When the device is to be used as a blower, a volute arrangement adopted for blowing in which the impeller is locatable is releasably attached to the motor unit. The blower volute includes an air inlet and an air outlet duct for expelling a stream of air created by the impeller. When the device is to be used as a vacuum, a volute arrangement adapted for vacuuming in which the impeller is locatable is releasably attached to the motor unit. The vacuum volute includes a suction duct for transporting debris to the impeller in an airstream created by the impeller and an air expelling duct for transporting debris away from the impeller in the stream of air to a collecting location.

Abstract: Method and apparatus for removing a label from a container which includes a cylindrical surface, by blowing air so as to be incident tangentially with respect to the cylindrical surface of the container and flow along the container surface toward a leading edge of the label as the container is rotated. An air knife having an air exit slit and a substantially planar surface disposed adjacent to and substantially perpendicular to the air exit slit utilizes the Coanda effect, such that air exiting from the air exit slit bends around and follows the substantially planar surface so as to flow tangentially to the cylindrical surface of the container and thereby remove the label as the container is rotated.

Abstract: A blower vacuum device of the kind having a motor (2) which is located in a housing (4) and which drives an impeller (12) located in a the volute (16). The volute (16) has an air inlet (18) and an air outlet (20). When the device is used as a blower a blower attachment (28), formed in a single piece from a blower duct (28) and a grill (22), is releasably attached to the volute so that the grill (22) is attached over the air inlet of the volute and the blower duct (28) is attached over the air outlet. When the device is used as a vacuum, a vacuum attachment (36) which is formed in one piece from a suction duct (30) and a collecting bag duct (34) is releasably attached to the volute so that the suction duct (30) is attached over the air inlet and the collecting bag duct (34) is attached over the air outlet. This means that it is easy to change the device between a blowing mode and a vacuum mode by detaching a single piece blowing attachment from the device and replacing it with a single piece vacuum attachment.

Abstract: A nozzle for use with a lawn and garden blower provides a comparatively wide pattern of high velocity air. The nozzle includes a substantially hollow, tubular housing tapering from the upstream end to the downstream end. At the downstream end is a plurality of bores arranged side-by-side to divide the air stream into a plurality of high velocity air streams substantially parallel to one another as the plurality of air streams exit the nozzle from a plurality of apertures proximate the downstream end.

Abstract: A convertible leaf blower and vacuum apparatus includes a fan and baffle supported on one end of a cylindrical member for insertion into a collar defining an air inlet of the fan for narrowing the diameter of the air inlet when the apparatus is being connected to the collar. A vacuum tube replaces the cylindrical member when the apparatus is in a vacuum. The vacuum tube is connected to the collar in the same manner as the cylindrical member. A cover for overlaying the air inlet is attached on one side to the fan housing by a hinge and the other side by a releasable fastener.

Abstract: A blower vacuum comprising a motor (10) operated by a switch (16) and located in a housing (4), a fan (14) drivable by a motor, at least one attachment member (6,106) which covers the fan and which is releasably attachable to the housing, and a safety interlock located at the interface between the housing and the attachment member comprising an actuating means (53) for activating the switch only when the attachment member is attached to the housing and a locking means (54, 42) for locking the attachment member to the housing when the motor is switched on.

Abstract: A device for renovating synthetic grass playing surfaces which optionally include a layer of particulate material. The device comprises a plenum chamber (10) which directs a fast moving jet of air against the particulate so as to dislodge it and direct the particulate into a manifold (11) which partially surrounds the plenum chamber. The manifold is designed to separate out the fine particles and direct them to a collection area, and to lay the coarse particulate back on the surface. Filtering and collection apparatus is also described.

Abstract: An improved convertible electric blower/vac. The blower/vac includes an improved air inlet cover with an adjustable choke member. The air inlet cover also includes a pressure ring for increasing the efficiency of the blower/vac impeller when the unit is operated in the blower mode. The blower/vac also includes a blower tube and a vacuum bag collar, each with resilient tabs that engage receptacles on the blower/vac to retain the blower tube and vacuum bag collar on the unit. The housing outlet of the blower/vac includes guides that interact with longitudinal ribs on the blower tube and the vacuum bag collar to reduce unwanted rotational deflection of the blower tube and vacuum bag collar when either is engaged on the housing outlet. The blower/vac includes an improved vacuum tube for use of the blower/vac in the vacuum mode.

Abstract: A program controllable structure for providing program defined orientations of a nozzle for discharging ionized air onto the surfaces of a workpiece prior to a painting operation. The support structure comprises pivotal cantilevered support arms extending from the cross arm structure of a support arch and a second degree of freedom for the nozzle by means of a pivotal connection between the support arms and the nozzle at the free end of the support arms. Programmable means are provided for determining the orientation of the nozzle relative to the cantilevered arms at each of a plurality of program points.

Abstract: Apparatus for creating a flow of air in a hollow wall or ceiling to aid in drying a wall or ceiling which has become wet generally through a disaster such as broken pipes, flooding, leaking roof, includes a conduit having a first end sized and configured to fit and be secured over and around an opening in a wall or ceiling which has an electrical box mounted therein. The conduit will generally be provided with holes positioned to be aligned with the usual cover plate mounting holes in a wall switch or outlet, or fixture mounting holes in the box itself, through which screws can be positioned to effect securement of the conduit. A second end of the conduit is configured to accept the end of an air supply hose or a vacuum supply hose, such as extending from the outlet or the inlet, respectively, of a usual air blower, and an air flow passage extends from the second end to the first end to direct air into or draw air from the wall or ceiling through and around the electrical box.

Abstract: A blower system (10) for use in a car wash includes a support plenum (12) comprising two side supports (14, 16) and an overhead support (18), each supporting a blower bag (24, 26, 28). The blower bags (24, 26, 28) are comprised of flexible material. Long and short gussets (46, 48) are spaced across the width of the bags (24, 26, 28) to maintain the bags in a substantially rectangular cross section shape throughout the length of the bag (24, 26, 28). The bags (24, 26, 28) taper to a nozzle (32) to supply the pressurized air to the vehicle.

Abstract: An air distribution system of a car wash air blower system is provided for directing air to a vehicle travelling along a predefined path using an air producer mounted on each side of the path for producing flowing air. Nozzle assemblies are attached to the distribution system at the ends of the predefined routes for directing air toward a vehicle travelling along the vehicle path. A pivoting hinge hinges a nozzle relative to a distribution duct. A first hinge section is pivotally secured to the second hinge section in a manner allowing rotation of the second hinge section about a defined axis of air travel. The two hinge sections are secured by a frame mounted in the air flow path to the hinge sections. A nozzle directs a stream of air toward the surface of a vehicle positioned adjacent to the nozzle. One nozzle embodiment includes a curved air distribution cell formed of a flexible webbing and having a generally triangular shape. An alternative embodiment is a nozzle having a cylindrical shape.

Abstract: A blower vacuum unit for selective operation in a blower mode and in a suction mode, comprises: a housing having means forming an air inlet and means forming an air outlet; a motor carried within the housing, an impeller rotatably driven by the motor and positioned for drawing air into the housing through the air inlet and discharging the air from the housing through the air outlet; a debris collection conduit one end of which conduit is an operating end and the other end of which conduit is adapted for attachment to a debris collection container and means for generating an entrained air flow, using the air discharged through the air outlet, at the operating end of the debris collection conduit into the debris conduit. The housing and the debris collection conduit comprise separate components and the conduit is adapted to be releasably mounted on the housing so that the operating end of the conduit is located for co-operation with the air outlet of the housing.

Abstract: A debris collecting apparatus (2) includes a debris conduit (4), one end of which debris conduit is an operating end (8) and the other end of which debris conduit (4) is adapted for attachment to a debris collecting container (30); the apparatus further generates an entrained air flow at the operating end (8) of the debris conduit (4) into the debris conduit (4) and comminutes the debris. Also, the entrained air flow is generated external to the debris conduit (4), but the comminution of the debris occurs within the debris conduit (4).

Abstract: A power blower includes a fan case arranged fore and aft in the axial direction of a fan; and an engine, wherein a central opening having an inner diameter larger than the outer diameter of the fan is formed on a front member of the fan case, and a lid member is releasably mounted on the central opening.

Abstract: A portable power blower includes a body and a handle mounted on a top of the body. The body includes a prime mover, a fan volute chamber, a fan housed in the fan volute chamber and attached to one end of an output shaft of the prime mover, and an air inlet of the fan volute chamber formed in front of the fan. A main guard member is so mounted as to cover one side surface of the fan volute chamber on which the air inlet is formed, and a gap for radially introducing external air into the air inlet is formed between a rear side of the main guard member and the one side surface. The gap is in open communication with atmosphere at a top portion of the body. A bottom guard member connected to the main guard member and the fan volute chamber covers bottom portions of the fan volute chamber and the prime mover, and a sub-guard member connected to the bottom guard member and the fan volute chamber covers sides of the prime mover which oppose the main guard member and the bottom guard member, respectively.

Abstract: A hand-held cleaner is disclosed which is capable of performing suction operation to suck fallen leaves, refuse and the like and blowing operation to drift them together selectively with ease, and as opposed to the conventional one, which is not required to be changed in a manner of holding handles to greatly change position of a body including an engine depending upon type of operation, thereby enabling various operations to be performed easily and improved operational efficiency and manageability to be realized. The hand-held cleaner 10 comprises a blower body 10A including a prime mover 12, and a blower suction path 20 and a blower blow-off path 30 which are located on said blower body 10A in such a manner that the axis S of the former and the axis F of the latter are substantially in parallel with each other when viewed in plan, said blower suction path 20 being adapted to be rotatable.

Abstract: Apparatus for directing pressurized drying air into a hollow wall or ceiling to aid in drying a wall or ceiling which has become wet generally through a disaster such as broken pipes, flooding, leaking roof, etc., without removing a portion of the structure, but by merely removing a standard wall switch or outlet cover plate, includes a conduit having a first end sized and configured to fit over and around an electrical box as installed in a wall or ceiling and to be secured thereover. The conduit will generally be provided with holes positioned to be aligned with the usual cover plate mounting holes in a wall switch or outlet, or fixture mounting holes in the box itself, through which screws can be positioned to effect securement of the conduit.

Abstract: An arrangement is provided for cleaning pipelines and especially ventilation pipes and ducts in buildings, and includes a nozzle connected to a supply conduit through which a pressurized medium can flow. The arrangement includes a nozzle opening directed back toward the supply conduit. The nozzle opening is in the form of a large continuous annular gap which extends along the periphery of the nozzle and is connected to the supply conduit and the source of a pressurized medium. The gap directs the medium toward the inner walls of the pipe or duct and effects a cleaning of the inner walls. The nozzle is moved into the pipe or duct as a result of reaction forces generated from discharge of the pressurized medium through the nozzle opening.

Abstract: A fan apparatus capable of preventing problems which can be caused during the rotation of a fan rotor, and also capable of facilitating the mounting and dismounting of a suction port cover. The suction port cover removably provided on the same side of the apparatus as an air suction port includes a bell-mouth shaped member for guiding air being sucked into the air suction port in such a manner that air is introduced from the side of the cover, the inner surface of the bell-mouth shaped member defining a first suction passage. A blind patch member is disposed in the space defined by the outer surface of the bell-mouth shaped member with a gap between the blind patch member and an outer surface of the bell-mouth shaped member so that a second suction passage is defined therebetween.

Abstract: A nozzle for providing an oscillating fluid stream has a stationary segment, and at least one oscillating segment pivoted to the stationary segment. In one embodiment, the fluid stream impinges on an inwardly turned lip on the oscillating segment to drive the oscillation. In other embodiments, the reaction of the fluid discharge assists in driving the oscillation of the nozzle, with or without assistance of the inwardly turned lip. For high pressure systems, including the use of liquids, the segments may be more massive to redirect the fluid stream. For compact systems, the plural segments may be completely housed within the stationary segment.

Abstract: An apparatus for cleaning a golf putting path including a hand grip portion, an elongate shaft secured to the hand grip portion, and a head secured to an opposite end of the shaft. The hand grip, shaft, and head are collectively sized and arranged to resemble a golf club and further they include a compressed gas cartridge, a discharge nozzle, and a valve in fluid communication with the compressed gas cartridge and the discharge nozzle for controlling flow of gas from the compressed gas cartridge to the discharge nozzle.

Abstract: A snow and ice remover having a scraper, and a device for passing a heated fluid along the scraper onto the ice.

Abstract: A portable air blower is provided for use around the home for purposes of drying a freshly washed vehicle or the like. The blower is supported on top of the arm of the user and proximate the user's shoulder as the user's arm passes through a rigid loop support which stabilizes the blower on the user's arm. The blower can be so operated for extended periods without the user becoming exhausted. An electric motor powers a fan and electrical resistance coils heat the air which passes therethrough.

Abstract: An apparatus for shredding/reducing the size of material yard waste and having: a housing defining an intake opening through which yard waste is to be drawn and an outlet opening through which yard waste drawn through the intake opening can be expelled; an impeller having a rotational axis and at least one vane for intercepting yard waste at the intake opening and propelling the yard waste intercepted by the impeller vane centrifugally to be expelled at the outlet opening; and a cutting structure/cutting attachment for reducing the size of yard waste drawn into the intake opening and advancing towards the impeller. The cutting structures includes at least one elongate blade having its length projecting substantially parallel to the rotational axis of the impeller. In one form of the invention, the blade rotates with the impeller.

Abstract: Apparatus for cleaning litter such as paper from a surface and a method of using such apparatus are described. An open-end portable basket is provided made of wire mesh to hold the litter while allowing dirt and air to pass therethrough. A portable hand held blower directs the litter from the surface into the basket. The basket retains the litter but allows air and surface dirt to pass therethrough.

Abstract: A portable hand-held blower vacuum apparatus (10) having a hinged inlet cover (24) with a handle (26) disposed at one end of the cover (24). The cover (24) is moveable between a closed position where the cover spans an air inlet opening (20) and an open position to allow insertion of a vacuum tube (50) in to the inlet opening (20). The handle (26) is used to move the cover between the open and closed positions. Air flows into the inlet opening (20) through a screen (38) in the cover (24), through arcuate slots (42) in a tubular extension (44) of the inlet opening (20) and over a circumferentially extending rib (46) formed on the cover (24). In an alternative embodiment, a dedicated blower is provided in which a solid, stationary cover (54) spans the inlet opening (20).

Abstract: A backpack power blower apparatus including a frame carrying an engine and a blower. The frame is provided with a sound insulating planar member for reducing noises produced by the engine and the blower, the sound insulating planar member including opposite side portions extending rearwardly from a front portion of the frame and a rear portion extending between the opposite side portions at rear end portions thereof whereby the sound insulating planar member surrounds a machine body, including the engine and the blower, at least at opposite sides and a rear side of the machine body.

Abstract: An air distribution system of a car wash air blower system is provided for directing air to a vehicle travelling along a predefined path using an air producer mounted on each side of the path for producing flowing air. An air distribution system associated with each air producer directs air along a plurality of predefined routes from the air producer to a plurality of locations along the path. The predefined routes are substantially symmetrical about a vertical plane containing the vehicle path. Nozzle assemblies are attached to the distribution system at the ends of the predefined routes for directing air toward a vehicle travelling along the vehicle path. The air producer completely encloses a fan and drive motor. A pivoting hinge hinges a first section of a duct relative to a second section of a duct. The first hinge section is pivotally secured to the second hinge section in a manner allowing rotation of the second hinge section about a defined axis of air travel.

Abstract: An air knife assembly is disclosed for removing water and soapy lubricants from an area of a bottle or can which is to be labeled or coded using drop marking equipment. The air knife is positioned at the correct pitch, roll and yaw angles to remove water from a desired area only, avoiding damage to labels which have been applied but not yet bonded to the bottle or can. The dewatering ensures accurate marking of the product.

Abstract: This dryer system for concentrated drying of water-damaged building surfaces in typical residential and commercial constructions is temporarily attached during the drying process and is removed after the damaged area is dried. The dryer system comprises a high-volume, forced air blower attached to an air diverter selected from a variety of different diverters configured to attach to various flat surfaces or corners in a room. The blower may operate remotely from the diverter when they are connected by an air duct. The system forces dry air between partitioning studs in walls, through flutes typically found in tongue-in-groove flooring, and similarly behind ceilings. The moisture-laden air leaving the wall, floor or ceiling may be captured with a diverter and duct and dried by a dehumidifier before recirculation back through the system or the air may be ducted outside of the water-damaged area. An air heater can also be combined with the blower to enhance the drying process.

Abstract: A filter cleaning lance having a fast acting valve on a handle portion and an extension portion which terminates in a distributor disposed at essentially right angles to the extension portion. The distributor is further provided with a series of nozzles directed perpendicularly from a plane in which both the distributor and the extension handle lie so as to efficiently clean a filter surface having limited access.

Abstract: An apparatus for cleaning clogged dental equipment lines, such as water and air lines and drains, for a wide variety of dental equipment such as cuspidors and handpieces. One embodiment has an air hose connected to a connector for a handpiece for a drill, etc., wherein the connector has an interior plastic insert which closes off air to the holes in the drill for drive and exhaust air and allows air through two holes which connect with the spray air and water ports of the handpiece for the drill whereby the air blows out the clogged slits. Another embodiment uses the air hose with a rubber nozzle to blow clogged suction lines. Another embodiment has a rubber element with a hole in its middle which fits over the discharge hole in the cuspidor, whereby the air blows out the debris clogging the cuspidor hole and connecting lines.

Abstract: Apparatus for preventing the deposition of dust on a surface, for example, the transparent surface of an optical instrument, is provided. The apparatus includes a tube and a hollow porous frustrum. The surface is placed inside the tube. The small opening of the frustrum is placed adjacent the surface, and the large opening of the frustrum is sealed against the inner wall of the tube. Compressed gas is flooded into the tube, passes through the frustrum and sets up a laminar gas flow away from the surface, thus preventing the deposition of dust on the surface.

Abstract: Disclosed is a leaf gathering and bagging system. The leaf gathering device comprises a mesh basket having a circumferential bump ring thereon, and two extendable legs cooperating with the mesh basket to guide leaves and other debris into the basket, the leaves and other debris being driven by a hand-held blower. The bag holder comprises a bump ring designed to cooperate with the basket bump ring, a cylindrical portion integral with the bag holder bump ring, and a retainer ring mounted on the cylindrical portion to retain a bag, which may be plastic, in an upright and open position. The cylindrical portion has three sockets thereon for slidably receiving three tripod legs. The bag holder and the extendable legs may be compactly stored in or on the mesh basket. The system provides an arrangement for first gathering leaves and other debris in the basket and thereafter provides for the transfer of the leaves and other debris to a bag ready for disposal.

Abstract: An outlet chute (10) for a blower device to guide the expulsion of leaves, grass or other debris, having an inlet portion (26) and a bifurcated outlet portion (28) including a first outlet duct (30) and a second outlet duct (32) which direct debris in opposing lateral directions. A deflector vane (34) is disposed within bifurcated outlet portion (28) to deflect expelled debris to one of the first outlet duct and second outlet duct. The first outlet duct (30) allows for the expulsion of debris in substantially the same direction in which it leaves the blower housing and is configured to expel the debris closer to the ground than second outlet duct (32), which expels debris with less thrust and at higher elevation. A method of using a blower device equipped with the chute includes making a series of parallel passes with each pass in a direction opposite to that of its adjacent passes.

Abstract: A leaf blower which includes an axial fan secured to the generally horizontal drive shaft of a motor carried upon a wheel-mounted deck. The deck is guided over the ground by a handle which allows the user of the leaf blower to direct the air flow from the axial fan across the surface of the ground. The wheels of the deck are adjustable to allow for the height and angle of incline of the fan relative to the ground to be varied for optimum leaf blowing.

Abstract: A laser lens cleaner and cleaning method for a compact-disc playing machine having a turntable-like compact-disc support, a laser-reading device with a laser lens facing the reflective playing surface of a compact disc, a motor for rotating the compact-disc support, and a control circuit for receiving instructions from a compact disc or a cleaning disc relative to rotating and stopping the compact-disc support. The cleaning disc is the same size as a compact disc for the playing machine. It has a reflective lower surface with a cleaning brush projecting out downwardly therefrom for contacting the laser lens. The cleaning disc also has digital, electrically coded data providing a portion containing instructions for the control circuit. The instructions instruct the control circuit via the laser lens what to do during rotation of the cleaning disc and to stop the cleaning disc when the laser lens has been cleaned.

Abstract: A nozzle pipe supporting handle comprises flange portions disposed at both sides of a slit of a mounting portion, wherein the inner sides of the flange portions are press-fitted to the outer sides of a grip portion so that the grip portion can be held in such a manner that the mounting position thereof can be changed relative to a nozzle pipe.

Abstract: A tail pipe of an exhaust muffler of an internal combustion engine extends and terminates in a delivery opening to which air blown from a blower is flowed, and an exhaust vent of the tail pipe is disposed so as to open in a downstream direction of the air blown from the delivery opening.