3m Innovative Properties Company

3m Company

Jerry E Salhus

Malcolm F Douglas

David R Bastow

Alan F Butler

Margaret A Hartfel

Stephen C P Joseph

Stephen Cp Joseph

Margaret E Hartfel

Stephen CP Joseph

A spray gun () has a fluid reservoir () with a removable liner () received in a container () having a detachable lid (). The liner (), which may be thermo/vacuum-formed from a planar material, has a shape that corresponds to and is a close fit within the interior of the container () and collapses as fluid is withdrawn from within the liner () during operation of the spray gun (). The lid () has an outlet () connected to an inlet on the spray gun () for transfer of liquid from the reservoir () to the spray gun () and the container () has a vent (A) in the base end for admitting air between the container () and the liner () as liquid is withdrawn from within the liner ().

Apparatus for spraying liquids, and disposable containers and liners suitable for use therewith

A spray gun is disclosed, including components and kits of components thereof, comprising a body comprising an attachment point for a compatible liquid reservoir and an adapter. The adapter comprises, at a first end, a non-threaded connection for attachment to a connector of a compatible liquid reservoir, the adapter being attached at a second end to the attachment point on the body such that the adapter remains attached to the body upon removal of a compatible liquid reservoir from the non-threaded connection.

Apparatus for spraying liquids, and adapters and liquid reservoirs suitable for use therewith

A spray gun has a fluid reservoir that contains a removable liner. The liner, which may be thermo/vacuum-formed from a plastics material, is a close fit within the interior of the reservoir and collapses as fluid is withdrawn from within the liner during operation of the gun. Preferably, the liner has a comparatively-rigid base and is capable of standing, unsupported, outside the reservoir. The side walls of the liner are preferably thin in comparison to the base and can be collapsed for disposal of the liner. The reservoir has a removable lid and is capable of standing, inverted, on its own so that it can be filled with fluid. The lid also functions to secure the liner in the reservoir and, at the end of a spraying operation, the lid and the liner are removed together from the reservoir and discarded, thereby simplifying the cleaning of the spray gun.

Apparatus for spraying liquids, disposable containers and liners suitable for use therewith

Growing community of inventors

Bloomington, MN, United States of America

Jerry E Salhus