3m Innovative Properties Company

Bryan J Hayward

Brady P Haislet

Brian E Duncan

Stephen C P Joseph

Scott D Gullicks

Anna M Hegdahl

Alexander T Ebertowski

A liquid spray gun nozzle assembly is disclosed comprising a coating liquid inlet portion and a coating liquid outlet portion, and a coating liquid flow path connecting the coating liquid inlet with the coating liquid outlet. The spray gun connection portion opposite the coating liquid outlet portion is adapted to connect the liquid spray gun nozzle assembly to a compatible liquid spray gun body. The spray gun connection portion includes a liquid sealing member configured to facilitate provision of a liquid needle within a liquid needle zone and an air sealing member configured to isolate an air zone. The air sealing member includes a tapering rim. The liquid sealing member and the air sealing member are circular in shape.

Spray gun and nozzle assembly attachment

A liquid spray gun nozzle assembly is disclosed comprising a coating liquid inlet portion and a coating liquid outlet portion, and a coating liquid flow path connecting the coating liquid inlet with the coating liquid outlet. The spray gun connection portion opposite the coating liquid outlet portion is adapted to connect the liquid spray gun nozzle assembly to a compatible liquid spray gun body. The spray gun connection portion includes a first access window formed in a body of the liquid spray gun nozzle assembly proximate to the liquid flow path and a third sealing member configured to facilitate provision of a liquid needle within a liquid needle zone. The third sealing member having a distal end protruding beyond a first or second sealing member.

A liquid spray gun nozzle assembly is disclosed comprising a coating liquid inlet portion comprising a liquid connector for connection to an external liquid source; a coating liquid outlet portion comprising a liquid nozzle for spraying a coating liquid fed into the nozzle assembly through the coating liquid inlet portion, the liquid nozzle being disposed along a spray axis; a coating liquid flow path fluidly connecting the coating liquid inlet portion to the liquid nozzle; and a spray gun connection portion opposite the coating liquid outlet portion adapted to connect the liquid spray gun nozzle assembly to a compatible liquid spray gun body. The spray gun connection portion comprises a nozzle assembly sealing surface adapted to seal the liquid spray gun nozzle assembly to the compatible liquid spray gun body, the nozzle assembly sealing surface comprising first and second sealing members that are each circular and concentric with one another.

A liquid spray gun nozzle assembly is disclosed comprising a spray gun connection portion opposite a coating liquid outlet portion adapted to connect the liquid spray gun nozzle assembly to a compatible liquid spray gun body, the spray gun connection portion comprising an outer wall comprising a radially-outward facing surface; first and second camming members disposed on the radially-outward facing surface, each camming member comprising first end, a second end, and a camming surface facing the coating liquid outlet portion; a first access window separating the first end of the first camming member from the second end of the second camming member; and a second access window separating the first end of the second camming member from the second end of the first camming member.

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Saint Paul, MN, United States of America

Bryan J Hayward