Spray gun having internal boost passageway
Assignee3M Innovative Properties Company
InventorsStephen C. P. Joseph, Scott D. Gullicks, Russell E. Blette, Jameel R. Qiblawi
Life of this patent
Estimating the term…
Abstract
A barrel (20) adapted for use with a spray gun (2) is disclosed. The barrel (20) comprises a boost feed port (44) fluidly connected to a boost passageway (48), the boost passageway (48) being integral to the barrel (20). The boost passageway (48) is adapted to convey a pressurized boost fluid originating in the spray gun (2) to a boost delivery port (56) to assist in urging a coating fluid from a compatible coating fluid reservoir (80) for spraying by the spray gun (2).
Claims33
A barrel adapted for use with a gravity fed spray gun, the barrel comprising:
- a gun interface adapted to connect the barrel to a gravity fed spray gun platform;
- a fluid interface adapted to connect the barrel to a coating fluid reservoir, the fluid interface comprising a fluid port;
- a fluid nozzle opening through which a coating fluid to be sprayed can exit the barrel, the fluid nozzle opening being fluidly connected to the fluid port by a fluid passageway formed within the barrel;
- wherein the fluid passageway is adapted to convey a coating fluid urged from the compatible coating fluid reservoir out of the fluid nozzle opening for spraying by the gravity fed spray gun;
- a boost feed port fluidly connected to a boost passageway, the boost passageway being integral to the barrel;
- wherein the boost passageway is adapted to convey a pressurized boost fluid originating in the gravity fed spray gun to a boost delivery port to assist in urging a coating fluid from the compatible coating fluid reservoir for spraying by the gravity fed spray gun.
An assembly comprising a barrel and a coating fluid reservoir adapted for use in combination with a gravity fed spray gun;
- the barrel comprising a fluid interface adapted to connect the barrel to the coating fluid reservoir, the fluid interface comprising a fluid port;
- a fluid nozzle opening through which a fluid to be sprayed can exit the barrel, the fluid nozzle opening being fluidly connected to the fluid port by a fluid passageway formed within the barrel;
- a gun interface adapted to connect the barrel to a gravity fed spray gun platform;
- a boost feed port proximate the gun interface;
- the coating fluid reservoir being connected to the fluid interface and comprising
- a coating fluid chamber fluidly connected to the fluid port;
- and
- a boost fluid chamber fluidly connected to the boost delivery port;
- a boost passageway fluidly connecting the boost feed port to a boost delivery port located proximate the fluid interface, the boost passageway being formed within the barrel;
- wherein the boost passageway is adapted to convey a pressurized boost fluid originating in the gravity fed spray gun to the boost fluid chamber to assist in urging a fluid in the coating fluid chamber into the fluid passageway and out of the fluid nozzle opening.
An assembly comprising a barrel and a gravity fed spray gun,
- the barrel comprising
- a fluid interface adapted to connect the barrel to a coating fluid reservoir, the fluid interface comprising a fluid port;
- a fluid nozzle opening through which a fluid to be sprayed can exit the barrel, the fluid nozzle opening being fluidly connected to the fluid port by a fluid passageway formed within the barrel;
- a gun interface adapted to connect the barrel to the gravity fed spray gun;
- a boost feed port proximate the gun interface and fluidly connected to a boost passageway formed within the barrel;
- the gravity fed spray gun comprising a boost port housed within a barrel interface, the gravity fed spray gun being connected to the gun interface at the barrel interface;
- wherein the boost passageway is adapted to convey a pressurized boost fluid originating from the boost port to a boost delivery port proximate the fluid interface to assist in urging a fluid in a compatible coating fluid reservoir into the fluid passageway and out of the fluid nozzle opening.
A coating fluid reservoir adapted for connection to a compatible barrel of a spray gun, the coating fluid reservoir comprising
- a coating fluid chamber;
- and
- a boost fluid chamber separated from the coating fluid chamber by a separating member such that the coating fluid chamber is fluidly isolated from the boost fluid chamber regardless of the orientation of the coating fluid reservoir relative to the spray gun;
- a lid member comprising
- a reservoir connector for connection of the coating fluid reservoir to a compatible barrel;
- a fluid aperture fluidly connected to the coating fluid chamber;
- and
- a boost aperture fluidly connected to the boost fluid chamber;
- wherein introduction of a pressurized boost fluid to the boost fluid chamber via the boost aperture causes application of pressure to the coating fluid chamber to urge a fluid in the coating fluid chamber through the fluid aperture.
A gravity fed spray gun comprising a gravity fed spray gun platform, the gravity fed spray gun platform comprising a barrel, the barrel comprising a boost passageway, a fluid passageway, and a fluid interface, the fluid interface comprising a boost delivery port in fluid communication with the boost passageway and a fluid port in fluid communication with the fluid passageway;
- wherein the barrel is separable from the gravity fed spray gun platform and wherein the barrel comprises a gun interface and the spray gun platform comprises a barrel interface, the gun interface being releasably connected to the barrel interface.
Dependencies are inferred from the claim text.