Abstract: A ring in the path of the low pressure pressurized air that flows to the air cap chamber of a fluid spray gun for atomizing the fluid has a series of circumferentially spaced air passageways angled to direct the pressurized air toward the centrally located atomizing air outlet opening of the air cap to concentrate the atomizing air onto the ejected stream of fluid to produce uniform desired intermediate-sized droplets resulting in improved paint atomizing efficiency.

Abstract: To seal against liquid leaking out around a rod which is slidably movable lengthwise axially within a chamber containing the liquid through an opening in the rear wall of the chamber, a ring of thermoplastic material is placed in the chamber around the rod and pressed against the rear wall of the chamber while applying heat to cause the thermoplastic material to flow into the opening around the rod and onto the outside of the wall so that when the heat is removed the material sets and latches itself onto the rear wall to seal off the space around the rod while still allowing the rod to slide easily.

Abstract: Two or more relatively fine mesh screens are placed in a liquid flow path to allow gas or air or liquid under pressure to pass through but to prevent unpressurized liquid from flowing through. In one application the device may be attached to a vent opening of a liquid container to permit air into the container while preventing liquid from spilling out of the container through the vent opening. In another application the screens may be used in the flow path for liquid under pressure to prevent dripping of the liquid after the pressure has been removed.

Abstract: In a spray gun for fluids, such as paint, in which an elongated needlenosed plunger is operated by a trigger to move back and forth along the gun barrel for opening and closing a fluid exit opening, the plunger is coupled to the trigger by a ball and socket swivel arrangement to minimize skewing of the plunger while it travels along the barrel.

Abstract: In a spray gun for fluids, such as paint, pressurized air is brought from a hollow handle to a hollow barrel containing an air transition nozzle while the fluid is brought radially into a fluid nozzle in the barrel. The fluid is expelled through a port in the center of the fluid nozzle at the end of the barrel and the pressurized air is expelled out the end of the barrel through openings in an air cap to shape the fluid spray. A cylindrical cartridge, which includes the fluid nozzle and a restricter plug, is movable along the inside of the barrel to change the size and/or shape of the spray and at the same time, control the amount of air to the air cap and the amount of expelled fluid to keep the air-to-fluid ratio substantially unchanged and the air transition nozzle produces a well-defined spray pattern with uniform droplets.

Abstract: In a spray gun for fluids, such as paint, pressurized air is brought from a hollow handle to a hollow barrel while the fluid is brought radially into a fluid nozzle in the barrel. The fluid is expelled through a port in the center of the fluid nozzle at the end of the barrel and the pressurized air is expelled out the end of the barrel through openings in an air cap to shape the fluid spray. A cylindrical cartridge, which includes the fluid nozzle and a restricter plug, is movable along the inside of the barrel to change the size and/or shape of the spray and at the same time, control the amount of air to the air cap and the amount of expelled fluid to keep the air-to-fluid ratio substantially unchanged.

Abstract: A composition comprising the product of a homogeneous dispersion of water and the active components soap, a water-soluble alkali-metal silicate, and sulfonated castor oil and having a pH adjusted with acid to within the range of 6.5 to 10 for applying to the hands or other parts of the body to protect the skin against the aid in removal of non-water-soluble contaminants or soil.

Abstract: Foam plastic pads are contained in separate air-tight compartments with each of the compartments having an air passage which is controlled by a manually operated valve. The person using the cushion first allows air to enter the compartments, then rests on the cushion and allows the air to exhaust until the cushion feels comfortable as it forms to the contour of the person's body and the valve is then closed and the cushion will hold its shape for some time or until the valve is opened.