Unitary, hand-held, portable, self-powered refillable mixed-media ejector tool

• US 5,514,026 A
• Filed: 10/20/1993
• Issued: 05/07/1996
• Est. Priority Date: 10/20/1993
• Status: Expired due to Term

• Current Assignee: The Eugene Frank Giaquinto and Marguerite Carlucci Giaquinto Revocable Living Trust
• Original Assignee: Sandair Nevada, Inc.
• Inventors: Schaffer, Stephen C.
• Primary Examiner(s): Kisliuk, Bruce M.
• Assistant Examiner(s): BANKS, DERRIS HOLT
• Application Number:
  US08/140,224
• Time in Patent Office: 930 Days
• Field of Search: 451/90, 451/91, 451/99, 451/75, 451/102, 451/344
• US Class Current: 451/90
• CPC Class Codes: B24C 5/02 Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials perforating by fluid jet B26F1/26

Abstract

A symmetrically balanced, integrated, portable, refillable, serviceable, adjustable, self contained tool, suitable for single hand operation, for ejecting a stream of particulate, powdered, or liquid material toward a target combining a supply reservoir containing the materials, a portable propellant container adapted to the supply reservoir, carrying compressed propellant liquid, a propellant release valve delivering propellant from the container via a constricted air jet orifice to a angular mixing chamber positioned above the uppermost level of materials the materials supply reservoir, a delivery conduit connecting the lower portion of the supply materials reservoir chamber to the angular mixing chamber through an adjustment valve, delivering a stream of materials aspirated from the materials supply reservoir by the negative atmospheric pressure deferential created by a Venturi effect to the angular mixing chamber, driving the compressed gas and materials through the connected nozzle containing a cylindrical conduit with a conical end, adjusting the materials flow is extended upward adjacent to the trigger for one hand operation.

Claims

1. An integrated, portable, hand held, adjustable refillable, re-buildable, self powered tool for ejecting a stream of abrasive particulate, powdered, or liquid materials toward a target site comprising:

a hollow materials reservoir chamber, accommodating a supply of abrasive granular particulate, powdered, or liquid materials connected by a special adapter to and supported by a mateable adapter attached to a pressurized container;

a removable filler plug, removable from a chamfered seat in top of the hollow materials reservoir chamber, or any convenient location, for material refilling, wherein the improvement comprises the removable filler plug,

a filler plug vent bore, incorporated into the removable filler plug, connecting ambient atmosphere to the inside of the material reservoir chamber, wherein the improvement consists of the vent bore in the removable filler plug,

a hopper top with a downward protruding central collar supporting a central axial conduit whose internal bore directs the gas delivery tube attached to the trigger to alignment with propellants depressable plunger valve, by means of the linear alignment guides, wherein the improvement consists of the linear alignment guides,

a gas delivery conduit in a trigger assembly to direct compressed gas to a replaceable air jet, wherein the improvement consists of the replaceability of the removable air jet,

a gas delivery conduit in the trigger assembly to direct released gas to the air jet containing angular compression chambers exiting to a reduced diameter orifice for the further compression and adjustment of the compressed gas stream, wherein the improvement consists of the angular compression chambers contained in the air jet;

an angular mixing aspiration chamber constructed inside the nozzle housing, for mixing of abrasive particulate, powdered, or liquid materials and gas,

a replaceable ejector nozzle housing containing the advanced mixing aspiration chamber, wherein the improvement consists of the replaceability of the nozzle housing assembly,

a material delivery conduit tube connecting the advanced mixing aspiration chamber with the bottom of the material reservoir chamber, through a flow control adjustment valve assembly,

a replaceable cylindrical tube with a conical end, made of a suitable wear resistant material, such as steel or rubber, lining the nozzles exit conduit, positioned to produce enhanced negative pressure promoting aspiration of materials from the materials reservoir chamber from the delivery conduit to the advanced mixing aspiration chamber, wherein the improvement consists of the replaceable cylindrical tube with a conical end to reduce wear of the nozzle exit conduit,

a replaceable materials control valve connected and intersecting the material delivery conduit tube, wherein the improvement consists of the materials control valve,

a flow control valve composed of a flow control shaft containing a bore, and a control valve lever to adjust the flow of materials from the materials reservoir chamber, wherein the improvement consists of the replaceable flow control valve and its components for the adjustment of the flow of materials,

all of said components being combined in an integrated, symmetrically balanced, refillable, adjustable, parts replaceable, hand held portable assembly which can be seized, carried, adjusted, aimed and operated by the user in only one hand, wherein the improvements consist of the refillable, adjustable and parts replaceable nature of the invention.

2. The integrated refillable ejector tool defined in claim 1 wherein the materials reservoir chamber, trigger and nozzle assemblies are combined as a single assembly mounted on a propellant container with a pending adapter assembly, wherein the improvement consists of the pending adapter assembly.

3. The integrated refillable ejector tool defined in claim 2 wherein the pending adapter plate is sonic welded or molded to the underside of the material reservoir chamber floor, wherein the improvement consists of the pending adapter plate.

4. The integrated refillable ejector tool defined in claim 3 wherein a pending adapter plate is attached to an approved aerosol propellant container, wherein the improvement consists of the pending adapter plate.

5. The integrated refillable ejector tool defined in claim 4 wherein the pending adapter plate on the material reservoir floor, is fitted to the pending adapter plate on the propellant container, wherein the improvement consists of the fitting of a male adapter plate to a female adapter plate, forming a unique mounting assembly.

6. The integrated refillable ejector tool defined in claim 1 wherein the nozzle, trigger, and material delivery conduit tube assembly, and the adjustable valve assembly is detachable for cleaning and replaceable as a complete assembly, wherein the improvement consists of the detachability and replaceability of the complete flow control valve assembly.

7. The integrated refillable ejector tool defined in claim 6 wherein the removable cylindrical tube with the conical end is seated into mounting compression pads, contained inside the nozzles housing, wherein the improvement consists of the seating of the removable cylindrical tube in compression mounting pads instead of being permanently attached.

8. The integrated refillable ejector tool defined in claim 7 wherein the nozzle assembly, and each of its parts, including the cylindrical tube with the conical end, the air jet, and the adjustment valve are detachable individually from the trigger assembly for service or replacement, whereby each part is detachable for cleaning and replacement, wherein the improvement consists of the individual detachability of each part.

9. The integrated refillable ejector tool defined in claim 1 wherein the inclined angles of the air jet compresses and directs the propellant gas through the air jet orifice into the angular mixing aspiration chamber, wherein the improvement comprises the compression of gas through the inclined angles of the air jet to increase the power of the tool.

10. The integrated refillable ejector tool defined in claim 1 wherein a materials control valve intersects the materials conduit tube, wherein the improvement comprises the materials control valve and its intersection with the materials delivery conduit tube.

11. The integrated refillable ejector tool defined in claim 10, wherein the materials control valve lever is attached to the material control valve shaft containing a flow control shaft bore whereby material flow is controlled by moving the material control lever, wherein the improvement comprises the ability to control the flow of material.

12. The integrated refillable ejector tool defined in claim 1 wherein the filler plug incorporating the vent bore for connecting ambient atmosphere to the inside of the material reservoir chamber, whereby extracting the plug from the materials reservoir chamber provides an aperture to refill said chamber with material, wherein the improvement consists of the filler plug and the aperture for refilling the material reservoir chamber.

13. The integrated refillable ejector tool defined in claim 12, wherein the material delivery conduit tube is substantially parallel to the gas delivery tube, with said material conduit and said gas delivery tube being slidably mounted for a reciprocating movement in the slide-apertures formed in the materials reservoir chambers roof, whereby depressing actuation of the depressible trigger actuates the propellant tank'"'"'s plunger valve, releasing compressed gas into the gas delivery tubes bore and through the air jets orifice, into the advanced angular mixing chamber to produce negative atmospheric pressure creating a venturi effect, aspirating material from the lower end of the materials reservoir chamber to the advanced angular mixing aspiration chamber, whereby the pressurized gas is focused by the air jet, mixes with the material and delivers a stream of compressed gas and material through the nozzles internal conduit to the target site, wherein the improvement consists of the air jet compression and focusing abilities enhances the pressure pattern of the gas driving the stream of material through the nozzle.

14. The integrated refillable ejector tool defined in claim 13, wherein the material control lever is connected to a flow control shaft which intersects the material delivery conduit tube, whereby movement of said lever adjusts the flow of material matching to the needs of the project.

15. The integrated refillable ejector tool defined in claim 14, wherein the said lever for adjusting the materials flow is extended upward adjacent to the nozzle assembly and in close proximity of the depressable trigger will provide for one hand operation, whereby the improvement is;

the extension of the flow control valve will allow for the adjustment of the materials flow into the mixing chamber from the reservoir chamber with a one finger movement while simultaneously depressing the trigger.

16. An integrated male and female adapter for mating compressed gas container with ejector tools which direct the gas at a target, either carrying or not carrying other material with it comprising;

a female adapter which can be glued, molded or otherwise permanently attached to a device which directs gas to a target,

a male adapter which can be snapped on or otherwise attached to compressed gas container,

a screw arrangement in the male adapter which will mate with the female adapter,

a screw arrangement in the female adapter which will mate with a screw arrangement in the male adapter.

17. The adapter defined in claim 16 wherein the male adapter is composed of a material which will allow it to be snapped onto a compressed gas containers uppermost rolled rim, but will break if an attempt is made to remove it.

18. The adapter defined in claim 17, wherein the screw arrangement in the male and female adapter device is a snap on device,

19. The adapter defined in claim 16 wherein the screw arrangement in the male and female adapter device is a fitted bayonet device, or any arrangement which allows for positive secure mating between the male and female adapter devices.