A multi-component electro-mechanical flame spray deposition system is disclosed having a first electro-mechanical feeder and a second electro-mechanical feeder, each in communication with a mixing hopper, and wherein the mixing hopper is in communication with a powder nozzle having an orifice, and a combustion torch having an orifice, wherein the orifice of the powder nozzle is in juxtaposition to the orifice of the combustion torch. A method of using the multi-component electro-mechanical flame spray deposition system is provided for depositing substrates on or to articles of manufacture.

A powder sprayer includes a powder storage tank, a nozzle communicated with the powder storage tank, a telescopic rod, and a balloon. The telescopic rod is communicated with the powder storage tank and is spaced apart from the nozzle. A length of the telescopic rod is adjustable. The balloon is communicated with one end of the telescopic rod away from the powder storage tank. By such configurations, an application range of the powder sprayer is increased and safety of the powder sprayer is improved.

A nozzle arrangement for use in expelling pressurized fluid includes a dead man control. The dead man control has a manually operable control part movable between a non-operating position, which prevents operation of the nozzle arrangement, and an operating position, and biased towards the non-operating position. The manually operable control part is pivotably coupled relative to a nozzle holder of the nozzle arrangement, which extends away from the pivotal coupling substantially towards a distal end of a nozzle part of the nozzle arrangement. The manually operable control part includes a handle part which in the operating position is substantially against and aligned with the nozzle part.

The present application relates to a powder sprayer comprising: an air inlet part into which air is introduced from an external source; a powder mixing part to which powder is supplied from an external source; a confluence channel which is provided to join fluid moved from the powder mixing part and air moved from the air inlet part and discharge the joined air and fluid to the outside; a first flow channel which connects the air inlet part to the power mixing part; a second flow channel which connects the air inlet part to the confluence channel; a third flow channel which connects the powder mixing part to the confluence channel; and an on-off valve which is provided to selectively perform one of closing of the second flow channel and opening of at least one of the first flow channel and the second flow channel.

A powder spraying system comprises a source of dry powder (4), a spray nozzle (25), and a supply conduit (16) connecting the source of dry powder with the spray nozzle. The spray nozzle comprises a nozzle body (50) having a nozzle outlet (51), a first conduit (52) for dry powder, and a second conduit (53) for gas. The first conduit extends between a powder inlet (54) in communication with the supply conduit and a powder outlet (55). The second conduit extends between a gas inlet (56) and a gas outlet (57), the gas outlet being located in proximity to the powder outlet such that a gas flowing through the second conduit and out of the gas outlet produces a suction force at the powder outlet to promote flow of a dry powder through the first conduit and out of the powder outlet and the nozzle outlet. The powder outlet and the gas outlet are orientated to promote mixing of the gas with the dry powder. The first conduit (52) is a straight conduit between the powder inlet (54) and the powder outlet (55).