Abstract: A spray nozzle assembly having a nozzle body and a downstream air cap. The air cap has a central opening through which liquid is directed and a plurality of circumferentially spaced air passages oriented at a compound angle to the central flow axis of the air cap opening for directing pressurized air flow streams that interact with discharging liquid for atomizing the liquid while imparting a tangential direction to the atomized liquid for enhanced atomization and a swirling movement into a full cone spray pattern. The air cap may have an integrally formed spray tip or a separate spray tip may be associated with the nozzle body. The air cap may be formed with a downstream conical recess into which liquid and air streams are directed, or alternatively, be designed for atomizing liquid internally within the air cap.

Abstract: A spray nozzle assembly having a nozzle body and a downstream air cap. The air cap has a central opening through which liquid is directed and a plurality of circumferentially spaced air passages oriented at a compound angle to the central flow axis of the air cap opening for directing pressurized air flow streams that interact with discharging liquid for atomizing the liquid while imparting a tangential direction to the atomized liquid for enhanced atomization and a swirling movement into a full cone spray pattern. The air cap may have an integrally formed spray tip or a separate spray tip may be associated with the nozzle body. The air cap may be formed with a downstream conical recess into which liquid and air streams are directed, or alternatively, be designed for atomizing liquid internally within the air cap.

Abstract: A liquid spray device having an atomizing unit for pressurized air atomization of a liquid flow stream, a plurality of atomized liquid direction passages disposed in eccentric relation to a central liquid flow passage of the atomizing unit, a plurality of flexible tubes each communicating with a respective one of the eccentric passages, and a spray nozzle coupled to a downstream end of each tube for discharging atomizing liquid at the selected location of the spray nozzle. The illustrated atomizing unit is a multi-component assembly that includes an air and liquid supply body, an air guide for directing atomizing air, an impact adaptor defining a liquid impingement surface, and a atomized director fitting defining the plurality of eccentric atomized liquid passages. The atomizing unit may be in a form of a spray gun designed for flushing atomized liquid from the elongated flexible tubes or instantaneously shutoff.

Abstract: A pressurized air assisted liquid spray nozzle assembly having a liquid spray nozzle having a downstream discharge orifice for discharging a solid stream of liquid, an air guide mounted in surrounding relation to a downstream end of said liquid spray nozzle, and an outer nozzle body disposed in surrounding relation to said air guide. The air guide defines a first plurality of air passages for directing pressurized atomizing air transversely to liquid discharging from said liquid spray nozzle for atomizing the discharging liquid and a second plurality of air passages for directing shaping air tangentially to liquid discharging from said liquid spray nozzle for shaping the atomized liquid particles into a predetermined conical spray pattern.

Abstract: A pressurized air assisted liquid spray nozzle assembly having a liquid spray nozzle having a downstream discharge orifice for discharging a solid stream of liquid, an air guide mounted in surrounding relation to a downstream end of said liquid spray nozzle, and an outer nozzle body disposed in surrounding relation to said air guide. The air guide defines a first plurality of air passages for directing pressurized atomizing air transversely to liquid discharging from said liquid spray nozzle for atomizing the discharging liquid and a second plurality of air passages for directing shaping air tangentially to liquid discharging from said liquid spray nozzle for shaping the atomized liquid particles into a predetermined conical spray pattern.

Abstract: A liquid adhesive dispensing system operable for more uniformly applying liquid adhesive foam onto moving substrates, notwithstanding changes in line speed, adhesive liquid flow rates, or foaming/atomizing air pressures. The illustrated liquid adhesive system includes a header having a plurality of air atomizing spray guns; the spray guns each having a respective variable speed positive displacement pump for directing a metered quantity of liquid adhesive from a liquid adhesive supply to the respective spray gun; and a control for controlling the operating speed of the positive displacement pumps in relation to the speed of the moving substrate and the foaming/atomizing air pressure to the spray guns in relation to the operating speed of the positive displacement pumps. The control further is operable for monitoring pressures across the positive displacement pumps for insuring the accurate direction of metered quantities of liquid to the spray guns.

Abstract: A liquid spray device having an atomizing unit for pressurized air atomization of a liquid flow stream, a plurality of atomized liquid direction passages disposed in eccentric relation to a central liquid flow passage of the atomizing unit, a plurality of flexible tubes each communicating with a respective one of the eccentric passages, and a spray nozzle coupled to a downstream end of each tube for discharging atomizing liquid at the selected location of the spray nozzle. The illustrated atomizing unit is a multi-component assembly that includes an air and liquid supply body, an air guide for directing atomizing air, an impact adaptor defining a liquid impingement surface, and a atomized director fitting defining the plurality of eccentric atomized liquid passages. The atomizing unit may be in a form of a spray gun designed for flushing atomized liquid from the elongated flexible tubes or instantaneously shutoff.

Abstract: A liquid adhesive dispensing system operable for more uniformly applying liquid adhesive foam onto moving substrates, notwithstanding changes in line speed, adhesive liquid flow rates, or foaming/atomizing air pressures. The illustrated liquid adhesive system includes a header having a plurality of air atomizing spray guns; the spray guns each having a respective variable speed positive displacement pump for directing a metered quantity of liquid adhesive from a liquid adhesive supply to the respective spray gun; and a control for controlling the operating speed of the positive displacement pumps in relation to the speed of the moving substrate and the foaming/atomizing air pressure to the spray guns in relation to the operating speed of the positive displacement pumps. The control further is operable for monitoring pressures across the positive displacement pumps for insuring the accurate direction of metered quantities of liquid to the spray guns.

Abstract: A liquid adhesive dispensing system operable for more uniformly applying liquid adhesive foam onto moving substrates, notwithstanding changes in line speed, adhesive liquid flow rates, or foaming/atomizing air pressures. The illustrated liquid adhesive system includes a header having a plurality of air atomizing spray guns; the spray guns each having a respective variable speed positive displacement pump for directing a metered quantity of liquid adhesive from a liquid adhesive supply to the respective spray gun; and a control for controlling the operating speed of the positive displacement pumps in relation to the speed of the moving substrate and the foaming/atomizing air pressure to the spray guns in relation to the operating speed of the positive displacement pumps. The control further is operable for monitoring pressures across the positive displacement pumps for insuring the accurate direction of metered quantities of liquid to the spray guns.

Abstract: A liquid adhesive dispensing system operable for more uniformly applying liquid adhesive foam onto moving substrates, notwithstanding changes in line speed, adhesive liquid flow rates, or foaming/atomizing air pressures. The illustrated liquid adhesive system includes a header having a plurality of air atomizing spray guns; the spray guns each having a respective variable speed positive displacement pump for directing a metered quantity of liquid adhesive from a liquid adhesive supply to the respective spray gun; and a control for controlling the operating speed of the positive displacement pumps in relation to the speed of the moving substrate and the foaming/atomizing air pressure to the spray guns in relation to the operating speed of the positive displacement pumps. The control further is operable for monitoring pressures across the positive displacement pumps for insuring the accurate direction of metered quantities of liquid to the spray guns.

Abstract: An external mix air assisted spray nozzle assembly having a nozzle body, and an air cap for a directing pressurized air streams on a discharging liquid stream external to the liquid discharge orifice of the nozzle assembly for atomizing and forming the liquid into the desired spray pattern. The air cap includes an upstream internal air chamber, an external, downstream liquid discharge and mixing chamber, and a central opening coaxial with the liquid discharge orifice communicating between the upstream and downstream chambers. The air cap further includes a plurality of angled pressurized air discharge passages which communicate with an annular plenum of the air chamber disposed in surrounding relation to the central opening for enabling substantially uniform particle breakdown and distribution at lower air pressures than heretofore possible.

Abstract: An external mix air atomizing spray nozzle assembly comprising a nozzle body having liquid and air flow passages, and an air cap formed with an air chamber communicating with said air passage and a plurality of angled pressurized air discharge passages communicating with said chamber at an angle to a central axis of said spray nozzle assembly for directing pressurized air onto a liquid flow stream discharging from said liquid passage. The angled air discharge passages each are defined by a conical indentation in a front face of the air cap and a cylindrical bore communicating in perpendicular relation to a side surface of the conical indentation. The design of the angled air discharge passages permits easy manufacture and design modification for particular spray applications.

Abstract: A low pressure blower operated airknife having a housing with an elongated primary air discharge orifice for directing a narrow width curtain of air. The airknife includes an air-augmenting shroud which defines auxiliary discharge orifices on opposite longitudinal sides of the primary air discharge orifice such that air discharging from the primary discharge orifice creates a low pressure condition adjacent the auxiliary air discharge orifices for drawing additional air through the auxiliary discharge orifices which augments the velocity and volume of the discharging air current without the necessity for increasing the air inlet pressure or blower size. The shroud may take alternative forms, including pairs of wings disposed on opposite sides of the primary discharge orifice or hollow structures that surround the airknife housing. The airknife further is adapted for low pressure direction and application of air laden particles, such as preatomized liquid particles.

Abstract: A low pressure blower operated airknife having a housing with an elongated primary air discharge orifice for directing a narrow width curtain of air. The airknife includes an air-augmenting shroud which defines auxiliary discharge orifices on opposite longitudinal sides of the primary air discharge orifice such that air discharging from the primary discharge orifice creates a low pressure condition adjacent the auxiliary air discharge orifices for drawing additional air through the auxiliary discharge orifices which augments the velocity and volume of the discharging air current without the necessity for increasing the air inlet pressure or blower size. The shroud may take alternative forms, including pairs of wings disposed on opposite sides of the primary discharge orifice or hollow structures that surround the airknife housing. The airknife further is adapted for low pressure direction and application of air laden particles, such as preatomized liquid particles.

Abstract: A gun-like spray device having a spray nozzle assembly at the discharge end and a reciprocatably movable valve needle for controlling the liquid flow through the discharge nozzle assembly. The nozzle assembly includes an orifice member which defines a liquid discharge orifice and a rigid valve seat for centering and precisely locating the valve needle in a closed position. An annular resilient sealing member is secured within the orifice member for engaging and creating a liquid seal about the valve needle separate and apart from the rigid seat when the valve needle is in a closed position. The spray nozzle assembly may be used with spray devices having different sized valve needles and includes a first rigid valve seat downstream of the resilient sealing member for receiving a relatively small diameter valve needle and a second rigid valve seat upstream of the resilient sealing member for receiving a relatively large diameter valve needle.

Abstract: An external mix air assisted spray nozzle assembly having a nozzle body, and an air cap for a directing pressurized air streams on a discharging liquid stream external to the liquid discharge orifice of the nozzle assembly for atomizing and forming the liquid into the desired spray pattern. The air cap includes an upstream internal air chamber, an external, downstream liquid discharge and mixing chamber, and a central opening coaxial with the liquid discharge orifice communicating between the upstream and downstream chambers. The air cap further includes a plurality of angled pressurized air discharge passages which communicate with an annular plenum of the air chamber disposed in surrounding relation to the central opening for enabling substantially uniform particle breakdown and distribution at lower air pressures than heretofore possible.

Abstract: A low pressure blower operated airknife having a housing with an elongated primary air discharge orifice for directing a narrow width curtain of air. The airknife includes an air-augmenting shroud which defines auxiliary discharge orifices on opposite longitudinal sides of the primary air discharge orifice such that air discharging from the primary discharge orifice creates a low pressure condition adjacent the auxiliary air discharge orifices for drawing additional air through the auxiliary discharge orifices which augments the velocity and volume of the discharging air current without the necessity for increasing the air inlet pressure or blower size. The shroud may take alternative forms, including pairs of wings disposed on opposite sides of the primary discharge orifice or hollow structures that surround the airknife housing. The airknife further is adapted for low pressure direction and application of air laden particles, such as preatomized liquid particles.

Abstract: A low pressure blower operated airknife having a housing with an elongated primary air discharge orifice for directing a narrow width curtain of air. The airknife includes an air-augmenting shroud which defines auxiliary discharge orifices on opposite longitudinal sides of the primary air discharge orifice such that air discharging from the primary discharge orifice creates a low pressure condition adjacent the auxiliary air discharge orifices for drawing additional air through the auxiliary discharge orifices which augments the velocity and volume of the discharging air current without the necessity for increasing the air inlet pressure or blower size. The shroud may take alternative forms, including pairs of wings disposed on opposite sides of the primary discharge orifice or hollow structures that surround the airknife housing. The airknife further is adapted for low pressure direction and application of air laden particles, such as preatomized liquid particles.

Abstract: A gun-like spray device having a spray nozzle assembly at the discharge end and a reciprocatably movable valve needle for controlling the liquid flow through the discharge nozzle assembly. The nozzle assembly includes an orifice member which defines a liquid discharge orifice and a rigid valve seat for centering and precisely locating the valve needle in a closed position. An annular resilient sealing member is secured within the orifice member for engaging and creating a liquid seal about the valve needle separate and apart from the rigid seat when the valve needle is in a closed position. The spray nozzle assembly may be used with spray devices having different sized valve needles and includes a first rigid valve seat downstream of the resilient sealing member for receiving a relatively small diameter valve needle and a second rigid valve seat upstream of the resilient sealing member for receiving a relatively large diameter valve needle.