摘要:
A coating dispensing device includes a trigger assembly for actuating the coating dispensing device to dispense coating material and a nozzle through which the coating material is dispensed. The coating dispensing device further includes a first port adapted to supply compressed gas to the coating dispensing device and a second port adapted to supply coating material to the coating dispensing device. The coating dispensing device further includes a generator having a shaft. A turbine wheel is mounted on the shaft. Compressed gas coupled to the first port impinges upon the turbine wheel to spin the shaft, producing voltage. An electrode adjacent the nozzle is coupled to the generator to receive electricity therefrom to electrostatically charge the coating material. First and second seals seal the shaft where the shaft protrudes from the generator at its ends.
摘要:
A system, in certain embodiments, includes a spray device including a frame having a receptacle configured to receive a self-contained spray can. The spray device further includes a first conductive element configured to contact the self-contained spray can, and a first electrical conductor extending between the first conductive element and an earth ground such that a first electrical potential of the self-contained spray can is substantially equal to a second electrical potential of the earth ground while the self-contained spray can is in contact with the first conductive element. The spray device also includes a corona-charging electrode positioned adjacent to a spray nozzle of the self-contained spray can. The corona-charging electrode is configured to emit a stream of ions toward the self-contained spray can such that a spray of fluid from the spray nozzle passes through the stream of ions and becomes electrostatically charged.
摘要:
A coating material dispensing device includes an orifice for coupling to a reservoir for the coating material. The orifice is surrounded by a surface including at least one wall defining at least one groove. The reservoir includes a complementary surface including at least one wall defining at least one groove. The at least one groove and at least one wall surrounding the orifice respectively receive and are received in the at least one wall and at least one groove of the complementary surface of the reservoir to provide a labyrinth seal between the orifice and an exterior surface of the coating material dispensing device.
摘要:
A canister for a coating applicator system has a flexible barrier separating a coating-containing region in the canister from a region containing a force applicator for moving the barrier to dispense the coating. While the volumes of each region change upon movement of the barrier, surfaces defining the regions remain in that region.
摘要:
A device and a method are provided for positioning an air cap of a pneumatically aided atomizer. The air cap has air horns extending from its face to provide flows of air to aid in atomizing and shaping the atomized particle stream. The method and apparatus contemplate providing a device having at least one first opening adapted to receive the horns and a first level for indicating when the horns received in the at least one first opening are in a desired orientation.
摘要:
A paint spray gun having a dual operating mode trigger. The trigger pivots on a gun body about an axis. The two operating modes are selected by radially positioning the trigger relative to the axis. In a first operating mode, fluid flow to a nozzle is gradually increased as the trigger is gradually squeezed to permit fluid flow control for feathering the applied coating. In this mode, the trigger is mechanically linked for actuating a valve needle. In a second operating mode, a small actuating movement of the trigger operates a valve which causes a piston to move the valve needle to its fully open position. The second operating mode provides only on-off fluid control with a very short trigger stoke and a low trigger force.
摘要:
A remote low voltage power source for electrostatic paint applicators used in hazardous locations. A low voltage generator and voltage conditioning and regulating circuitry are mounted in a small explosion proof housing. A generator shaft and a shaft on a voltage level adjusting potentiometer extend through and projects from the housing. The flamepath and the flame gap for the shafts meet explosion proof standards while permitting shaft rotation. An air driven turbine is mounted on the exterior of the housing and is connected to the projecting generator shaft to drive the generator. The low voltage is applied to a spray gun which includes circuitry for increasing the voltage to a high level for electrostatic charging sprayed paint.
摘要:
An ergonomic hand held paint spray gun which reduces operator fatigue and stress. The handle of spray gun has an ergonomically designed shape and the size of the handle may be changed through the use of different size handle covers. The spray gun has a plurality of triggers arranged to be operated by different fingers and to facilitate operation when the gun is held in different orientations to reduce fatigue and operating frequency stress on an operator's fingers. Some of the triggers operate low force valves which supply pilot air to a pilot valve which opens the fluid and air valves. The paint and air hoses may be attached to alternate locations on the gun to reduce hand and wrist fatigue when painting predominantly vertical surfaces or predominantly horizontal surfaces. A junction box may be located in the paint and air hoses to allow connection of lighter weight hoses to the gun. The junction box is located to be held in the operator's free hand and an optional trigger valve may be located on the junction box for supplying pilot air to remotely trigger the fluid and air valves in the gun. For operating an HVLP gun, a pressure regulator may be located in the junction box to drop high pressure air to the high volume low pressure air flow required by the gun.
摘要:
An improved torque control and fluid shutoff mechanism for a fluid operated tool includes an output shaft with an axially slidable cam sleeve mounted on the shaft. The cam sleeve is coupled with a driven tool bit holder to provide a clutch connection. The cam sleeve is biased for engagement with a cam surface on the tool bit holder whereby during normal operation of the tool, the tool bit holder remains fixed relative to the cam sleeve. When a threshold torque acts on the tool bit holder, the tool bit holder rotates relative to the cam sleeve axially driving the cam sleeve to release a biased kickout sleeve from retaining a radially displaceable member. The radially displaceable member engages a throttle rod and a thrust pin. The throttle rod extends to a fluid control valve which controls inlet fluid. Release of the radially displaceable member from being retained by the kickout sleeve permits axial translation of the throttle rod to terminate fluid flow to the motor of the tool. The throttle rod is also responsive through the thrust pin to the position of a tool bit mounted in the tool bit holder to open the fluid flow to the motor.