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US 4,540,120 AGranted
Powder feed system for flame spray guns
AssigneeMetco, Inc.
InventorRichard A. Waszkiewicz
Life of this patent
Estimating the term…
Abstract
A system for assuring a more even powder flow rate in a flame spray gun. A powder metering device entrains powder into a gas. The gas with entrained powder is coupled to the flame spray gun. Vibration means, coupled to the powder and gas conduit, is provided to prevent any powder from settling in the conduit.
Claims10
A powder feed system for flame spray gun comprising, in combination:
- a powder feeder including a powder reservoir and a powder metering device both operative to entrain a powder in a carrier gas;
- a vibrator;
- a flexible conduit for conveying said entrained powder and gas from said metering device to said gun, said conduit having a lowest point disposed between said gun and said metering device;
- means to transmit vibrations from said vibrator along said conduit at least to said lowest point of said flexible conduit to cause any non-entrained powder at said lowest point to vibrate.
1 more element
In powder feed system for a flame spray gun having:
- a powder reservoir and a powder metering device;
- a source of carrier gas supplied to said powder metering device;
- a vibrator rigidly attached to said powder metering device;
- a flexible conduit for conveying powder entrained in said carrier gas from said metering device to said flame spray gun;
- and
- a connector means between said flexible conduit and said metering device;
- the improvement comprising:
- a wire coil closely encircling the perimeter of said flexible conduit and extending from said connector means to a point at a distance greater than one half of the length of said flexible conduit;
- and
- attachment means between said coil and said connector means.
7 more elements
A method for supplying powder to a flame spray gun comprising:
- entraining powder in a carrier gas by means of a powder metering device;
- conveying said powder and carrier gas through a flexible conduit toward a flame spray gun;
- providing a close fitting coil surrounding said flexible conduit and extending from a connector between said flexible conduit and said metering device to a point greater than one half of the length of said flexible conduit;
- and
- supplying vibrations to said coil.
2 more elements
Dependencies are inferred from the claim text.