Loading patent…
Assignee3M Innovative Properties Company
InventorsStephen C. P. Joseph, Michael J. R. Adams, Neil Delbridge, Michael W. Howcroft
Estimating the term…
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.
A liquid spraying apparatus comprising a spray gun and a reservoir for a liquid to be sprayed, the reservoir having an outlet connectable to the spray gun to permit the liquid to be withdrawn from the reservoir in use, and the spray gun having an integral socket arranged for non-threaded engagement with co-operating connector means by means of which the reservoir is releasably secured to the spray gun, wherein the co-operating connector means on the reservoir comprises a tubular coupling member that is a push-fit in the socket, the tubular coupling member having a first portion that provides a fluid-tight connection between the tubular coupling member and the socket, and a second portion that is co-operable with the spray gun externally of the socket to inhibit rotation of the tubular coupling member in the socket without restricting relative axial movement between the tubular coupling member and the socket to engage/disengage the tubular coupling member, wherein a radial lug integral with the spray gun is spaced above the integral socket forming a recess that interacts with the second portion.
Dependencies are inferred from the claim text.