Claims
- 1. A cold gas dynamic spraying which comprises:(a) a housing (b) an inlet for a gas entrained powder; (c) an inlet for a gas; (d) a mixing cavity disposed within said housing for mixing of said powder and gas in communication with said inlets, said cavity having an exit therefrom; (e) a nozzle holder having a tapered cylindrical bore centrally disposed therethrough, (i) said nozzle holder removably attached to said housing with a fastening means; and (f) a nozzle comprising at least two halves and having a centrally disposed bore therethrough, (i) said nozzle bore having a right frustoconical shape extending partway therethrough at an inlet of said nozzle bore and in communication with an inverted right frustoconical shaped bore exit at an opposed exit end, (ii) said nozzle bore in communication with said mixing cavity exit, (iii) said nozzle positioned within said bore of said nozzle holder, an interior taper of said nozzle holder bore essentially matching an exterior taper of the nozzle.
- 2. The apparatus of claim 1 wherein(a) said inlet for said gas entrained powder is a rear housing; (b) said inlet for said gas is within said rear housing; and (c) said mixing cavity is within a detachable front housing, and further wherein (i) said apparatus further comprises a means for removably attaching said rear and front housings.
- 3. The apparatus of claim 1 whereinsaid exit from said mixing cavity has a protruding lip for insertion into an inlet end of said nozzle bore.
- 4. The apparatus of claim 3 whereinsaid frustoconical shapes are cojoined within said nozzle bore.
- 5. The apparatus of claim 4 whereinan altitude of said inlet frustoconical bore is less than an altitude of said exit frustoconical bore.
- 6. The apparatus of claim 1 wherein said inlet for said gas entrained powder further comprisesan adjustable coupling for controlling a length of an extending portion of a tube for said gas entrained powder into said mixing chamber.
- 7. The apparatus of claim 1 wherein said housing further comprisesa gas diffuser.
- 8. The apparatus of claim 7 wherein said housing further comprisesa selectively openable vent.
- 9. The apparatus of claim 1 wherein said nozzle holder fastening means further comprises(a) a ring having at least two internal diameters, a larger of said at least two internal diameters positioned toward said housing; (b) an exterior periphery of said nozzle holder in mating contact with said ring; and (c) at least two removable fastening means for engagement of said ring with said housing.
- 10. A cold gas dynamic spraying:(a) a housing (b) an inlet for a gas entrained powder; (c) an inlet for a gas; (d) a mixing cavity disposed within said housing for mixing of said powder and gas in communication with said inlets, said cavity having an exit therefrom; (e) a nozzle holder having a tapered cylindrical bore centrally disposed therethrough, (i) said nozzle holder removably attached to said housing with a fastening means; and (f) a nozzle comprising at least two halves and having a centrally disposed bore therethrough, (i) said nozzle bore having a constriction at last partway through said bore, (ii) said nozzle bore in communication with said mixing cavity exit at an inlet end of said nozzle bore, (iii) said nozzle positioned within said bore of said nozzle holder, an interior taper of said nozzle holder bore essentially matching an exterior taper of the nozzle.
- 11. The apparatus of claim 10 wherein(a) said inlet for said gas entrained powder is a rear housing; (b) said inlet for said gas is within said rear housing; and (c) said mixing cavity is within a detachable front housing, and further wherein (i) said apparatus further comprises a means for removably attaching said rear and front housings.
- 12. The apparatus of claim 10 whereinsaid exit from said mixing cavity has a protruding lip for insertion into an inlet end of said nozzle bore.
- 13. The apparatus of claim 12 whereinsaid inlet nozzle bore is frustoconical and said exit nozzle bore is inverted frustoconical, said inlet bore in communication with said exit bore.
- 14. The apparatus of claim 13 whereinan altitude of said inlet frustoconical bore is less than an altitude of said exit frustoconical bore.
- 15. The apparatus of claim 10 wherein said inlet for said gas entrained powder further comprisesan adjustable coupling for controlling a length of an extending portion of a tube for said gas entrained powder into said mixing chamber.
- 16. The apparatus of claim 10 wherein said housing further comprisesa gas diffuser.
- 17. The apparatus of claim 16 wherein said housing further comprisesa selectively openable vent.
- 18. The apparatus of claim 10 wherein said nozzle holder fastening means further comprises(a) ring having at least two internal diameters, a larger of said at least two internal diameters positioned toward said housing; (b) an exterior periphery of said nozzle holder in mating contact with said ring; and (c) at least two removable fastening means for engagement of said ring with said housing.
- 19. The apparatus of claim 18 wherein(a) said nozzle is two mating halves.
- 20. A cold gas dynamic spraying which comprises:(a) a housing (b) an inlet for a gas entrained powder; (c) an inlet for a gas; (d) a mixing cavity disposed within said housing for mixing of said powder and gas in communication with said inlets, said cavity having an exit therefrom; (e) a nozzle holder having a cylindrical bore centrally disposed therethrough, (i) said nozzle holder removably attached to said housing with a fastening means; and a nozzle comprising at least two halves and insertable at least partway into said nozzle holder and in frictional engagement therewith, (i) said nozzle bore having a constriction at least, partway through said bore, and (ii) said nozzle bore in communication with said mixing cavity exit.
- 21. The apparatus of claim 20 wherein(a) said inlet for said gas entrained powder is a rear housing; (b) said inlet for said gas is within said rear housing; and (c) said mixing cavity is within a detachable front housing, and further wherein (i) said apparatus further comprises a means for removably attaching said rear and front housings.
- 22. The apparatus of claim 21 whereinsaid exit from said mixing cavity has a protruding lip for insertion into an inlet end of said nozzle bore.
- 23. The apparatus of claim 22 whereinsaid inlet nozzle bore is frustoconical and said exit nozzle bore is inverted frustoconical, said inlet bore in communication with said exit bore.
- 24. The apparatus of claim 23 whereinan altitude of said inlet frustoconical bore is less than an altitude of said exit frustoconical bore.
- 25. The apparatus of claim 20 wherein said inlet for said gas entrained powder further comprisesan adjustable coupling for controlling a length of an extending portion of a tube for said gas entrained powder into said mixing chamber.
- 26. The apparatus of claim 20 wherein said housing further comprisesa gas diffuser.
- 27. The apparatus of claim 26 wherein said housing further comprisesa selectively openable vent.
- 28. The apparatus of claim 20 wherein said nozzle holder fastening means further comprises(a) a ring having at least two internal diameters, a larger of said at least two internal diameters positioned toward said housing; (b) an exterior periphery of said nozzle holder in mating contact with said ring; and (c) at least two removable fastening means for engagement of said ring with said housing.
Parent Case Info
This application claims the benefit of Provisional application No. 60/201,456 filed May 3, 2000.
US Referenced Citations (9)
Provisional Applications (1)
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Number |
Date |
Country |
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60/201456 |
May 2000 |
US |