Abstract: In the processing of rapidly hardening flowable substances, especially glue, it is important to avoid hardening of glue residuals within the nozzle unit during temporary interruptions of operation. For this purpose, a liquid, especially water, is supplied through a nozzle duct so that the glue is rinsed out of an end section (31) facing the nozzle orifice (17). By closing the nozzle duct (16), a water column remains in the nozzle duct (16) and seals it towards the outside.

Abstract: A self contained battery operated spray unit is provided for cleaning air-conditioning coils and other devices to be cleaned. The spray unit includes a solution tank and a rinse tank which are selected to be sprayed with a three way valve. Fluid from one of the tanks is pumped with a battery operated DC pump into a surge tank and out a spray wand when activated. The surge tank acts as a reservoir of pressure so that the pump does not have to continually cycle when in use, thereby increasing battery life. The pressure out of the wand is set to clean the conditioning coils without damaging them through excess pressure.

Abstract: Disclosed is a theft deterring countertop mounted fluid dispensing system for dispensing liquid soap or the like using a liquid soap dispenser which can be disposable. The system includes a base unit or module adapted to be permanently affixed to a countertop. The base unit includes a locking mechanism and at least one lug orifice. The base unit is used in conjunction with the fluid dispensing unit or module which includes a bottle for storing the liquid soap and a lug extending from the bottle. The lug is adapted to be received in the lug orifice of the base unit and releasably engaged by the locking mechanism therein. A key or series of movements which are not readily obvious to a casual user of the product are required in order to remove the fluid dispensing unit from the base unit.

Abstract: A particle sprayer includes a hollow body divided into an air compartment and a storage compartment for particulate material. The air compartment receives a piston which is manually slidable along the length of the air compartment to create air pressure within the air compartment. An air passageway provides air flow communication between the air compartment and the exterior of the sprayer. A discharge tube extends into the material in the storage compartment at one end and at the other end intersects the air passageway near a restriction in the air passageway defining a venturi opeing. Depression of the piston creates increased positive air flow exiting the sprayer the venturi opening and the resultant low pressure area draws material up the discharge tube from the storage compartment to be dispersed in a uniform amount into the air in the air passageway and ejected from the sprayer as a spray.

Abstract: The present invention is directed to the combination of a vibrating element and an ultrasonic nozzle having an ultrasonic vibrator. The combination includes a body having a liquid supply passage therethrough and a chamber having a first and second end. The liquid supply passage is in communication with the chamber via its first end. The second end of the chamber defines an opening. An inner peripheral wall forms a portion of the chamber intermediate the first and second end. A multistepped edged portion is formed on the inner peripheral wall and each step defines an edge which severs and atomizes the liquid which cascades thereover from the liquid passage.

Abstract: A fuel injection nozzle for internal combustion engines, in particular a cold-starting valve which has a valve needle opening counter to the force of a closing spring, the valve needle being additionally urged in the closing direction by an adjusting piston. The adjusting piston rests on a yielding stop formed by the closing spring. The stop is formed by the upper valve plate, which has a passageway bore for an extension tang of the adjusting piston. The extension tang forms a pre-stroke stop for the valve needle. A restoring spring is associated with the adjusting piston and is disposed inside the spring chamber, which surrounds the extension tang of the adjusting piston. At least one of the spring support plates has an inner annular wall protruding in collar-like fashion, which surrounds the engaged tang of the adjusting piston or valve needle.