3m Innovative Properties Company

Michael J R Adams

Stephen C P Joseph

Daniel E Siltberg

Malcolm F Douglas

Neil Delbridge

Antonio Bacciocchi

Michael W Howcroft

A spray gun and a detachable liquid reservoir releasably attached to the spray gun by engagement of mateable, non-threaded formations provided on the spray gun and the reservoir. The spray gun has an integral connector boss with a socket for reception of a connector tube of the reservoir. The boss has an external flange at the distal end and the reservoir has hook members separate from the connector tube. The hook members are co-operable with the flange when the connector tube is received in the socket to secure releasably the reservoir to the spray gun. In another arrangement, the connector tube is an interference friction-fit in the socket to secure releasably the reservoir to the spray gun. In yet another arrangement, the connector tube has bayonet lugs co-operable with bayonet grooves in the wall of the socket when the connector tube is received in the socket to secure releasably the reservoir to the spray gun. In a still further arrangement, the reservoir has an integral spout received in the socket integral with the spray gun and provided with a helical projection co-operable with the underside of a radial lug externally of the socket to secure the reservoir.

Spraygun with built-in quick-fit connector

A paint reservoir has a fluid outletconnectable to a spray gunand a fluid inletprovided with a removable screw capwhereby the fluid inletis directly accessible for introducing paint to the reservoir while attached to the spray gun. The fluid outletand fluid inletmay both be provided in an end wall of the reservoir with outletlocated on the longitudinal axis of the reservoir or offset to allow the size of the fluid inletto be increased for easier filling of the reservoir. The outletcan be aligned with the longitudinal axis of the reservoir or it can be inclined relative to the longitudinal axis to provide greater clearance for access to the fluid inletwhen the reservoir is attached to the spray gun. In an alternative arrangement, the fluid outlet is provided in an end wall of the reservoir and the fluid inlet is provided in a sidewall of the reservoir.

Reservoir with refill inlet for hand-held spray guns

A paint reservoir has a fluid outlet () connectable to a spray gun () and a fluid inlet () provided with a removable screw cap () whereby the fluid inlet () is directly accessible for introducing paint to the reservoir while attached to the spray gun (). The fluid outlet () and fluid inlet () may both be provided in an end wall of the reservoir with outlet () located on the longitudinal axis of the reservoir or offset to allow the size of the fluid inlet () to be increased for easier filling of the reservoir. The outlet () can be aligned with the longitudinal axis of the reservoir or it can be inclined relative to the longitudinal axis to provide greater clearance for access to the fluid inlet () when the reservoir is attached to the spray gun ().

Growing community of inventors

Norfolk, United Kingdom

Michael J R Adams