Air spray gun with pattern control tip

A spray assembly for a spray gun comprising:

• (a) a mixing chamber comprising:
• i. an exit hole extending longitudinally from an end point within mixing chamber to a distal end of the mixing chamber,
• ii. a first impingement hole, wherein the first impingement hole extends from a first side of the mixing chamber to the exit hole, wherein the first impingement hole has a first axis, wherein the first axis is axially offset from an exit axis of the exit hole, wherein a first sidewall of the first impingement hole tangentially intersects with an exit side wall of the exit hole at a first point, and
• iii. a second impingement hole, wherein the second impingement hole extends from a second side of the mixing chamber to the exit hole, wherein the second impingement hole has a second axis, wherein the second axis is axially offset from the exit axis of the exit hole, wherein a second sidewall of the second impingement hole tangentially intersects with the exit sidewall of the exit hole at a second point;
• and
• (b) a tip coupled to the distal end of the mixing chamber, wherein the tip comprises a purge channel, a pattern exit hole, and a pattern channel, wherein the pattern channel has a pattern channel axis;
• wherein the pattern channel axis is coaxial with the exit axis, wherein the pattern channel has a first length, wherein the exit hole has a second length, wherein the second length is greater than the first length;
• (c) a fluid source, wherein the fluid source is in communication with the exit hole of the mixing chamber and the purge channel of the tip;
• and
• (d) a trigger, wherein the trigger is operable to actuate the mixing chamber and the fluid source, wherein the mixing chamber is operable to transition between a spraying configuration and a non-spraying configuration, wherein the fluid source is operable to transition between a purging configuration and a non-purging configuration in response to actuation of the trigger, wherein the non-spraying configuration of the mixing chamber corresponds to the purging configuration of the fluid source, wherein the trigger is biased to maintain the fluid source in the purging configuration.

A spray gun comprising:

• (a) a main piston chamber having a main piston disposed therein, wherein the main piston is actuatable relative to the main piston chamber;
• (b) a gun block extending from the main piston chamber, wherein the gun block comprises:
• i. a top portion having a mixing chamber compartment formed therein,
• ii. a mixing chamber coupled to the main piston, wherein the mixing chamber is actuatable relative to the top portion, wherein the mixing chamber comprises:
• A. an exit hole extending longitudinally from an end point within mixing chamber to a distal end of the mixing chamber,
• B. a first impingement hole, wherein the first impingement hole extends from a first side of the mixing chamber to the exit hole, wherein the first impingement hole has a first axis, wherein the first axis is axially offset from an exit axis of the exit hole, wherein a first sidewall of the first impingement hole tangentially intersects with an exit side wall of the exit hole at a first point, and
• C. a second impingement hole, wherein the second impingement hole extends from a second side of the mixing chamber to the exit hole, wherein the second impingement hole has a second axis, wherein the second axis is axially offset from the exit axis of the exit hole, wherein a second sidewall of the second impingement hole tangentially intersects with the exit sidewall of the exit hole at a second point,
• iii. a first inlet, wherein the first inlet is in selective fluid communication with the first impingement hole,
• iv. a second inlet, wherein the second inlet is in selective fluid communication with the second impingement hole, and
• v. a tip coupled to the distal end of the mixing chamber, wherein the tip comprises a pattern exit hole and a pattern channel, wherein the pattern channel has a pattern channel axis,
• wherein the pattern channel axis is coaxial with the exit axis, wherein the pattern channel has a first length, wherein the exit hole has a second length, wherein the first length and the sum of the first length and the second length form a ratio, wherein the ratio is between approximately 31%, inclusive, and approximately 5%, inclusive;
• (c) a trigger, wherein the trigger is operable to selectively actuate the main piston;
• and
• (d) a handle, wherein the handle is selectively coupled to the main piston chamber.