Abstract: A gasoline unit injector comprising an outer, electrically conductive bellows, defining a variable volume fluid chamber, for reciprocating a piston within a pressure chamber to increase the fuel pressure in various downstream cavities. Various bellows are disposed within such chambers and are deformable in response to the increased pressure, the bellows are operative to control the rate at which fuel flows out from a metering orifice upon activation of a coil assembly.

Abstract: A gasoline unit injector comprising an outer, electrically conductive bellows, defining a variable volume fluid chamber, for reciprocating a piston within a pressure chamber to increase the fuel pressure in various downstream cavities. Various bellows are disposed within such chambers and are deformable in response to the increased pressure, the bellows are operative to control the rate at which fuel flows out from a metering orifice upon activation of a coil assembly.

Abstract: A nozzle insert for an actuator head of a fluid dispenser includes a circular body having a central portion containing a discharge orifice, and an annular, conical flange extending radially outwardly from such central portion and being radially flexible relative thereto. The insert is seated within a smooth, cylindrical head bore having a constant diameter, and engages a cylindrical probe on the head concentric to the bore. An end wall of the flexible, conical flange faces outwardly of the bore and presents a sharp outer peripheral edge of a diameter slightly greater than the bore diameter. And, the insert body is of a harder material than that of the actuator head, so that the conical flange defines a circular, self-locking pawl for positively locking the insert fully seated within the bore as the sharp peripheral edge penetrates into the bore wall.

Abstract: A novel center vane is disclosed for use in a full or solid cone spray nozzle. The vane has a solid center and specific parameters are set forth, in relation to the nozzle size and orifice diameter, for the vane geometry so that a solid spray cone of uniform distribution is obtained. In particular, we have found that when the orifice diameter is less than half of the nozzle diameter, the vane recess depth is a critical dimension to obtain a uniform fluid particle distribution in the solid cone spray and specifically have found that if the orifice diameter is equal to or greater than one-half the pipe or nozzle diameter, the vane recess depth should be one-fourth (0.25) of the pipe diameter, but if the orifice diameter is less than half of the pipe or nozzle diameter, the vane recess depth in inches should be equal to the orifice diameter squared divided by the nozzle diameter.

Abstract: An appliance for discharging gaseous, liquid or pasty product is described which comprises an inner pouch of deformable non-extensible material for holding the product, an outer enveloping element of caoutchouc-type macromolecular material about the inner pouch, a product outlet associated with the pouch, a valve device for controlling the discharge of product from the pouch through the outlet and being located intermediate the latter and the pouch, and a rigid core associated with the pouch; the cross-sectional area of said core is at least 40% larger than the cross-sectional area, taken in the same plane, of the interior of the outer enveloping element in unexpanded condition, and the maximum fillable volume available in the pouch when the latter is completely unfolded without expansion of its walls constitutes the maximum limit of expansion of the outer enveloping element, the said maximum limit being within the range of linear stretching of the caoutchouc-type macromolecular material.

Abstract: A sprinkler spray head consisting of three components preferably molded of plastic material, namely, a body member, a cap member and a flow control member. The mounting and sealing of the components is such that several different spray patterns can be obtained by utilizing several different cap member configurations with the same body and flow control members. The operation of the flow control member is such that flow control adjustment can be obtained by a turning movement from a center position in either direction.

Abstract: A dispensing nozzle for an aerosol package of the barrier type wherein a liquid product per se is directed out of the container through the usual valve. The nozzle is constructed to mix with the liquid product being dispensed air which is drawn in by the product so as to atomize the product and permit the dispensingthereof as a spray.

Abstract: An electromagnetic fuel injection valve having an electromagnetic actuator for moving a ball valve cooperating with a fixed valve seat. A metering orifice is located downstream from said valve seat and means for imparting a radial velocity component to fuel issuing from the injection valve is located in between the valve seat and the orifice. In addition, means is provided for minimizing the volume between the swirl means and the orifice without unduly restricting flow.

Abstract: To maintain the pressure with which fuel is injected from a fuel injection valve uniform during the injection period and to provide for atomization of the injected fuel by delivering the fuel through a nozzle adjacent a swirl chamber from a valve in which a continuous fluid flow is maintained from an inlet opening to a drain opening, an auxiliary valve is located adjacent the nozzle and coupled to the nozzle opening member, typically a needle valve cone, to interrupt return or drain fluid flow so that the full pressure of fuel delivered to the swirl chamber is available during injection time and the swirl action maintained, thus atomizing fuel being injected.

Abstract: A hollow cone nozzle for atomizing liquids, which is provided with a housing having a tangential inlet and a mouthpiece containing the nozzle discharge which is to be detachably fastened in the housing; a ring-shaped swirl insert with an opening disposed coaxial to the nozzle discharge and with several inlet channels directed transversely to the axis of the opening is thereby arranged in the nozzle housing between the inlet and the mouthpiece whereby the inlet channels of the swirl insert have cross sections that decrease in the flow direction.

Abstract: A finger-operated spray pump assembly including a tank, a primary piston slidably fitted inside the tank, having a liquid passageway, a secondary piston slidably fitted inside the primary piston, and a spring fitted inside the primary piston and the secondary piston for biasing the primary piston away from the secondary piston.

Abstract: An improved oiler includes a manually operated pump mechanism retained within the oiler container for pumping low viscosity oil and similar low viscosity fluids through a spout of the oiler for discharge by an adjustable spray nozzle. The nozzle is comprised of four separate interengaging parts including a compression fitting which contains a nozzle disc and a channel member. By rotating the compression fitting, physical separation of the disc and channel member is controlled and the pattern of spray through the nozzle is adjusted between a fine spray and a fine stream.

Abstract: An improvement of a swirl type fuel atomizer is disclosed in which a plurality of notches are equiangularly formed around an opening of a single-nozzle hole so that the liquid fuel injected may be divided into a plurality of fuel spray patterns. The complete combustion with a relatively low temperature may be ensured so that the emission of nitrogen oxides may be substantially eliminated or reduced.