Abstract: A pneumatically powered foam sprayer is provided. The foam sprayer includes a spray hose having a spray nozzle, a trigger assembly proximate the spray nozzle, and a pressure-actuated valve responsive to the trigger assembly. An air conduit extends between the pressure-actuated valve and an opening in the trigger assembly. Obstructing the opening with a hand, a finger or a thumb creates a change of air pressure within the air conduit and actuates the pressure-actuated valve to selectively allow the supply of foam into the spray hose. The air conduit may extends longitudinally through an interior portion of the spray hose, or along an exterior portion of the spray hose, and can include a laminar, chemical-resistant outer surface. An internal pump is powered by compressed air through the pressure-actuated valve, and the spray nozzle remains open both during and between uses to prevent the accumulation of pressurized foam within the spray hose.

Abstract: A pneumatically powered foam sprayer is provided. The foam sprayer includes a spray hose having a spray nozzle, a trigger assembly proximate the spray nozzle, and a pressure-actuated valve responsive to the trigger assembly. An air conduit extends between the pressure-actuated valve and an opening in the trigger assembly. Obstructing the opening with a hand, a finger or a thumb creates a change of air pressure within the air conduit and actuates the pressure-actuated valve to selectively allow the supply of foam into the spray hose. The air conduit may extends longitudinally through an interior portion of the spray hose, or along an exterior portion of the spray hose, and can include a laminar, chemical-resistant outer surface. An internal pump is powered by compressed air through the pressure-actuated valve, and the spray nozzle remains open both during and between uses to prevent the accumulation of pressurized foam within the spray hose.

Abstract: A portable, self-contained powered sprayer to produce a foam effluent spray from a liquid. The sprayer includes segregated air and liquid delivery systems that separately supply air and liquid to a mixing chamber. The liquid delivery system may include a pump for pumping liquid from a tank to the mixing chamber via a liquid supply line. The air delivery system may include a compressor for supplying pressurized air to the mixing chamber via an air supply line. The mixing chamber may be defined within a flow controller. In one embodiment, the sprayer includes control circuit for engaging and disengaging the pump and the compressor in response to operation of the flow controller. The control circuit may include a pressure switch operatively connected to the liquid supply line to trigger operation of the pump and the compressor in response to pressure within the liquid supply line.

Abstract: A teat foam ring connected to a supply of pressurized cleaning solution and a supply of pressurized air. The teat foam ring includes a cleaning solution inlet and defines a cleaning solution channel and an extrusion slot. Cleaning solution and compressed air flow into the ring through the cleaning solution inlet and into a cleaning solution channel. The cleaning solution is expelled from the ring through the extrusion slot as a foam. The extrusion slot extends upwardly and inwardly so that the foam forms a cone supported on an upper surface of the ring over the central opening in the ring. The teat foam ring may include or be connected to a mixing chamber for transforming the cleaning solution and the compressed gas into a foam. The mixing chamber may be defined within the inlet of the teat foam ring. A mixing medium may be located in the mixing chamber.

Abstract: A portable, self-contained powered sprayer to produce a foam effluent spray from a liquid. The sprayer includes segregated air and liquid delivery systems that separately supply air and liquid to a mixing chamber. The liquid delivery system may include a pump for pumping liquid from a tank to the mixing chamber via a liquid supply line. The air delivery system may include a compressor for supplying pressurized air to the mixing chamber via an air supply line. The mixing chamber may be defined within a flow controller. In one embodiment, the sprayer includes control circuit for engaging and disengaging the pump and the compressor in response to operation of the flow controller. The control circuit may include a pressure switch operatively connected to the liquid supply line to trigger operation of the pump and the compressor in response to pressure within the liquid supply line.

Abstract: A teat foam ring connected to a supply of pressurized cleaning solution and a supply of pressurized air. The teat foam ring includes a cleaning solution inlet and defines a cleaning solution channel and an extrusion slot. Cleaning solution and compressed air flow into the ring through the cleaning solution inlet and into a cleaning solution channel. The cleaning solution is expelled from the ring through the extrusion slot as a foam. The teat foam ring may include or be connected to a mixing chamber for transforming the cleaning solution and the compressed gas into a foam. The mixing chamber may be defined within the inlet of the teat foam ring. A mixing medium may be located in the mixing chamber.