Abstract: A vacuum cleaning system for a therapeutic tub that utilizes an aerating intake for jet nozzles located around the tub. A vacuum hose is connected to the air intake so that its capacity to draw in air is utilized to draw in spa water and expell it at the jet nozzles. A vacuum head, which is connected at the other end of the hose, is moved along the bottom and sides of the tub to draw in the water, as well as leaves and debris, which are trapped at a filter screen.

Abstract: Improvements in air blower driven debris collecting devices are disclosed including interchangeable air driven dispenser attachments for dispensing liquids and powders dispersed in an air stream; a debris collector including a portable air blower, a hand held debris pick-up nozzle, and a free standing debris collecting container; and an improved housing construction for a portable blower wherein the air intake and engine exhaust ports are positioned so as not to interfere with the operator carrying the blower and having an integral air cleaner filter holder for the engine carburator.

Abstract: Flammable fluid or other incendiary matter (204) contained aboard an aircraft may be removed from the aircraft's interior by means of a special purpose disposal device that utilizes the differential in pressure between the pressurized interior of a modern aircraft and the external airstream. The device itself comprises a main intake nozzle, an intermediate wand portion which is connected to the intake nozzle and in fluid communication therewith and a flexible hose provided with a quick connect fitting for connecting the device to a suitable outlet fitting in the skin of the aircraft. Preferably, several such outlet fittings are provided so that the device can be utilized at different locations within the aircraft's interior without requiring an excessively long hose. Each of the outlets is normally closed by means of a disk-shaped plug held in a flush position with respect to the aircraft's outer surface by means of a removable retainer ring.

Abstract: A dynamic vacuum cleaning device permits continuous or intermittent extraction, aspiration and elimination of solid dusts and particles from a stationary or moving surface. The vacuum is created by forcing a gas at high velocity into a venturi. A tube extending from the venturi will have a negative pressure created therein, resulting in a suction. A brush may optionally be fitted to the end of the vacuum tube. An adjustable cam is provided to control the amount of suction. The device can be used for the vacuum cleaning of sensitive optical, phonic or delicate micromechanical apparatus.

Abstract: Disclosed is a device, intended primarily for home use, for both vacuuming and scrubbing facial skin surfaces to remove oils and debris from the skin. The device is adapted for attachment to a conventional water outlet and comprises a Venturi tube to which is attached a housing overlying the throat suction aperture of the tube. The housing accommodates a turbine rotor which is rotated by the flow of water through the Venturi throat and the rotor drives a remote facial brush. Coaxial with the rotor is a vacuum controlling rotor which may deliver continuous or pulsating vacuum. When producing pulsating vacuum, the rotor periodically interrupts or pulses the vacuum produced in the housing which, via a flexible tube, is utilized by a remote vacuum head applied by the user to his facial surfaces.

Abstract: The invention relates to total elimination of aqueous deposits in pipelines intended for transporting gaseous fluids, such as a natural gas. The method involves sending, by a nozzle at an end of at least one compressed air ejector, connected with the pipeline, a pressurized driving fluid (for example, under 4 to 8 bars) into a pipeline which aspirates and entrains the gaseous fluid (air+water vapor), the mixture of fluids then being discharged at the other end of the ejector. In practice, multistage ejectors for example three ejectors in series, are used. According to a variant of the method, the step of putting gas which is to be transported into the pipeline is done while the vacuum is maintained in the ejector or ejectors so as always to be outside the limits of flammability of this gas. The method is particularly suitable for drying natural gas pipelines and then putting the pipelines under pressure.

Abstract: A collecting apparatus having a nozzle through which air is released to form a jet flow, a restriction provided at a position spaced from the nozzle in the direction of the jet flow and a vacuum sleeve defining a large vacuum space between the nozzle and the restriction. A collecting tube is connected to the vacuum sleeve to open to the vacuum space. A high vacuum is established in the vacuum space so that large dusts are sucked through the collecting tube and collected in a collecting bag attached to the restriction or scattered through the restriction.

Abstract: A pool vacuum comprises an elongated pipe section having a flattened debris pickup end and a discharge end for discharging debris into a bag which is removably attached to the pipe section. Intermediate the ends of the elongated pipe section is a larger pipe section which is spaced from and sealed to the elongated pipe section to form a fluid discharge chamber surrounding the elongated pipe section. Apertures are formed between the chamber and the discharge end of the elongated pipe section to direct fluid applied under pressure to the chamber rearwardly through the elongated pipe section. This creates a partial vacuum for causing debris located near the pickup end of the elongated pipe section to be sucked up and directed into the bag whenever fluid under pressure is supplied to the chamber.

Abstract: A vacuum desoldering tool and tool cleaner system is disclosed. The desoldering tool is connectable at will to a vacuum source and features a venturi exhaust and separate muffler or end cap for the tool. The venturi throat is relatively short and preferably has a ratio of the input throat to the output throat of 4 to 1 or more. The muffler or end cap has a smooth rounded surface and is provided with radially extending openings to serve as an exhaust and muffler. The tool also has an end cap and nozzle tip therefor which are connected to a metallic sleeve of the main portion of the tool by a threaded adaptor ring into which the end cap connects by a snap connection.

Abstract: A hand held lightweight apparatus for cleaning lint and fiber waste from the clearer rolls of spinning frames without removing such rolls from the spinning frame includes a driven, monofilament nylon flail which revolves at high speed within a suction head coupled to a vacuum producing apparatus. The nylon cord extends through an opening of the suction head upon each revolution of the driven flail device and the whipping action tears the accumulated lint and waste from the clearer rolls, while sightly roughening the roll surfaces, and the waste is directed to a collection point.

Abstract: Dust removing apparatus includes an air valve operable by a trigger-type push button to permit or interrupt the flow of compressed air from a compressor into an air discharge passage. When the valve is opened, the compressed air flows through an annular slit into the air discharge passage at an increased pressure, producing suction at the inlet of an intake member by an ejecting action. The dust removing apparatus further includes another valve which, when in open position, changes the path of flow of air to force out the compressed air from a nozzle.

Abstract: A pneumatic cleaner, particularly for turbines and like elements of textile machines which comprises a suction head, a suction duct communicating at one end with a conical suction mouth defined in the head and on the other end with a collecting container. The suction head has a front surface provided with a step-like annular projection so as to match with the entrance of a turbine or like element of a textile machine and to engage with the turbine entrance geometrically. The cleaner is also provided with a compressed air duct ending with a nozzle inside the suction duct, the nozzle being oriented so as to form a depression and suction in the suction mouth. The head further comprises a first and a second passage each communicating at one end with a source of compressed air and each having at the other end an air blast nozzle ending at the conical mouth of the suction head.

Abstract: To remove particles of debris from a floor surface, a hood is mounted on wheels to move over the floor with the open side of the hood facing downward to form a traveling chamber. An air jet nozzle inside the hood is directed downward and is moved in a circular horizontal orbit by a variable speed motor to agitate the debris particles as the hood travels. A pump is attached to the hood to maintain a vacuum therein and to withdraw from the hood a high velocity air stream entraining the agitated debris particles. The hood is manually steered and is driven by a variable speed motor.

Abstract: A surface cleaning device comprising nozzle means for directing a high-pressure jet of liquid at an acute angle on to a surface, and collection means for collecting the liquid after deflection from the surface, said collection means including an inlet duct of approximately constant cross-sectional area having a lower wall terminating with an edge adapted in use to contact the surface ahead of the area of impingement of the jet, whereby in use the liquid jet deflected from the surface co-operates with the duct to create a jet-pump which sucks entrained air, stray liquid, and debris cleaned from the surface, into the duct.

Abstract: Disclosed is a process and apparatus for dislodging and conveying material from a surface and into a discharge duct with a positive pressure, high velocity stream of fluid from a jet device wherein the fluid stream is controlled by using wall attachment means comprising an unenclosed coanda surface located adjacent to the jet device and disposed on a side of the stream opposite to that of the material to be conveyed, whereby the stream attaches to the coanda surface and the stream and entrained material is directed along the coanda surface and into a discharge duct and then directed into a collection device.

Abstract: An inverted channel member is placed over a surface having particulate or similar matter upon it. Air is forced through the channel member to create a vacuum within the member which causes the matter upon the surface to be picked up and blown from the surface and out the channel member.

Abstract: The present invention relates to a pressurized air-driven suction device for dust, mud, liquids, and similar substances, comprising one or more nozzles for ejecting pressurized air, and including appurtenant venturi tubes situated in an elongated tubular ejector housing, which at its outer end, if desired, may be provided with a silencer. A suction air pipe for supplying suction air is also mounted in said ejector housing, which is itself mounted through the end plate of a container, such as an oil drum having plug holes.

Abstract: An apparatus for removing both cut threads and trimmed edges from the working area of a sewing machine with a unit having a first air passage coupled to the area for removing trimmed edges, a second air passage coupled to the area for removing trimmed edges and opening into the first passage at an acute angle in an elliptically shaped opening to inject an air stream into the first passage to transfer momentum and cause air flow, the second passage comprising two tubular members one inside the other with the outer opening into the first passage, and a third air passage injecting air at a pressure above atmospheric pressure at an angle in an elliptically shaped opening to transfer momentum and create air flow through said second passage.

Abstract: Modifications of air or blow guns are disclosed, first, wherein the air or blow gun is converted to a suction gun in the respect that a vacuum or suction is generated at the normal discharge end of the gun, and second, wherein the discharge end of the gun is selectively converted from an air or blow gun to a vacuum or suction gun and vice versa.

Abstract: The present invention relates to a device for a combined suction and blow-off nozzle connectable to a source of compressed air, which also includes means to collect particles in case the nozzle is used as a suction nozzle.