Abstract: A fluid flow control system 40, 80 for use in an automotive wash system containing a fluidic, shear, or jet nozzle 50 for washing lens components, mirrors and headlamps with a supply fluid flow rate of between 1 and 2500 mL/min with a supply pressure of between 1 and 80 psi is fluidly connected through a pressure control device (PCD) or flow regulator 140, 180, in such a way that flow to the nozzle does not exceed 90% of the nominal flow rate without the PCD for supply pressures between 30 and 60 psi, or with a lower target flowrate for the same pressure range. The PCD 180 is an elastomeric body incorporating multiple flexible tabs in the fluid flow path responsive to flow rate and pressure to vary the area of the flow path. An annular spacer positioned below and in engagement with the flexible tabs regulates the flexing of the tabs.

Abstract: A fluid flow control system 40, 80 for use in an automotive wash system containing a fluidic, shear, or jet nozzle 50 for washing lens components, mirrors and headlamps with a supply fluid flow rate of between 1 and 2500 mL/min with a supply pressure of between 1 and 80 psi is fluidly connected through a pressure control device (PCD) or flow regulator 140, 180, in such a way that flow to the nozzle does not exceed 90% of the nominal flow rate without the PCD for supply pressures between 30 and 60 psi, or with a lower target flowrate for the same pressure range. The PCD 180 is an elastomeric body incorporating multiple flexible tabs in the fluid flow path responsive to flow rate and pressure to vary the area of the flow path. An annular spacer positioned below and in engagement with the flexible tabs regulates the flexing of the tabs.

Abstract: An improved spa nozzle that is capable of entraining high air flow rates from the surrounding environment, said nozzle of the type having a water input conduit of diameter D, a flow output conduit having entry and diameter of DID, a transition conduit having a diameter of ID and a length of PL, and an air entrainment conduit, and wherein the following ratios are defined to describe the relative geometry of the nozzle: ?=PL/(DID?ID), ?=DID/ID and ?=D/ID, the improvement comprising: the water input, transition and output conduits being configured such that ? is in the range of 1.3-5 and ? is>1.9.

Abstract: An improved injector which mixes a secondary fluid into a carrier fluid stream has (a) a body for directing the flow of the carrier fluid, this body having an internal wall forming a flow passage therethrough, a central axis, an inlet, an outlet, and a port for receiving the secondary fluid that is mixed with the carrier fluid, (b) a ramp-like restriction portion which is located downstream of the body's inlet and upstream of the secondary fluid port and configured so as to decrease the effective cross-sectional area of the flow passage in the direction of the flow of the carrier fluid, (c) a ramp-like expansion portion which is located downstream of the secondary fluid port and upstream of the body's outlet and configured so as to increase the effective cross-sectional area of the flow passage in the direction of the flow of the carrier fluid, (d) a throat portion which is situated between the restriction and expansion portions, and (e) a cavity in the throat that extends from its internal wall and into the

Abstract: A seat massager for massaging a person's back has, according to the present invention, a pair of inflatable, massage bladders configured so as to be received in close proximity to a person's back and oriented so that these bladders share an overlaid portion with each other, a pump that supplies fluid to the bladders, a fluidic having an inlet and two exhaust ports, a conduit that connects each of the fluidic exhaust ports to one of the pair of bladders, wherein the fluidic is configured so as to yield alternating flow from the exhaust ports that cyclically inflates and deflates each of the bladders so as to provide a massaging sensation to the back. This massager may also include an inflatable support bladder positioned beneath the massage bladders, another pump that supplies fluid to this support bladder, and a carrier plate on which the pumps are mounted, this plate being configured so as to aid in attaching the seat massager to the frame of a seat into which the seat massager is to be installed.

Abstract: A nozzle assembly for connecting to the outlet of a fluid flow source and providing a specified fluid flow spray includes: (a) a connector having a flow passage which extends between its ends, with the connector's upstream end being configured so as to mate with the fluid flow source's outlet, and with this connector passage at a point between its ends having a connector orifice, (b) a nozzle in the form of a fluidic insert configured so as to generate a specified fluid flow spray, (c) a housing having a fluid flow passage which extends between its ends and a rib which extends outwardly from the housing's exterior surface, with the portion of the housing's passage proximate its downstream end being configured so as to allow for the insertion and housing of the fluidic insert, and with the housing's upstream end being configured so as to be rotatably mounted in the connector fluid flow passage's downstream end, and (d) a retention cap having an opening extending between its ends that is configured to allow the

Abstract: A seat massager for massaging a person's back has, according to the present invention, a pair of inflatable, massage bladders configured so as to be received in close proximity to a person's back, each of said bladders having a front surface, with a portion of said front surfaces being overlayed so as to provide a rolling massage sensation when the bladders are inflated and deflated, a means for supplying fluid to the bladders, a fluidic having an inlet and two exhaust ports, a conduit that connects each of the fluidic exhaust ports to one of the pair of bladders, wherein the fluidic is configured so as to yield alternating flow from the exhaust ports that cyclically inflates and deflates each of the bladders so as to provide a massaging sensation to the back.