Electrostatic powder spray gun with hose purge adaptor

A hand-held electrostatic powder spray gun, which comprises:

• a barrel and means for charging powder and means for spraying the powder, the barrel including a powder flow path therein;
• a handle connected to the barrel for holding the spray gun in the hand of a user;
• a hose line for supplying powder to the barrel, a portion of the hose line extending adjacent to the handle, the hose line having a powder flow path therein;
• and
• means located in the hose line below the handle for introducing purging air directly into the hose line to purge the powder flow paths in the hose line and the barrel of accumulations of powder.

A purge adapter for use with a hand-held electrostatic powder spray gun comprising:

• a body comprising
• an inner member and
• an outer member,
• a channel through the body for the flow of powder with a conveying gas,
• a passageway formed between the inner member and the outer men, her for the introduction of purging air into the channel, the passageway being annular and surrounding the channel along a portion of its length;
• a first hose connection formed on the inner member at one end of the channel for attachment to a supply of powder;
• a second connection formed on the outer member at the other end of the channel for attachment to the spray gun;
• and
• a third connection connected to the passageway for attachment to a supply of purging air.