Apparatus for spraying liquids, and disposable containers and liners suitable for use therewith
DC
First Claim
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1. A method of preparing a paint spray gun, the method comprising:
- (a) providing a paint spray gun, a liner that is open at one end and has a rim at its open end, and a lid, the lid having an outwardly-extending rim, a filter, and an outlet;
(b) adding paint to the liner while the liner is upright;
(c) securing the lid and the liner to create a reservoir for the paint wherein the rim of the lid sits on top of the rim of the liner when the lid is secured to the liner;
(d) inverting the spray gun and attaching it to the outlet of the lid;
(e) placing the spray gun in an upright position with the liner and the lid above the spray gun; and
(f) activating the spray gun to withdraw paint from the liner and through the filter and the outlet so as to spray the paint from the spray gun.
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Abstract
A spray gun (1) has a fluid reservoir (11) with a removable liner (13) received in a container (12) having a detachable lid (15). The liner (13), 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has a shape that corresponds to and is a close fit within the interior of the container (12) and collapses as fluid is withdrawn from within the liner (13) during operation of the spray gun (1). The lid (15) has an outlet (16) connected to an inlet on the spray gun (1) for transfer of liquid from the reservoir (11) to the spray gun (1) and the container (12) has a vent (12A) in the base end for admitting air between the container (12) and the liner (13) as liquid is withdrawn from within the liner (13).
173 Citations
17 Claims
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1. A method of preparing a paint spray gun, the method comprising:
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(a) providing a paint spray gun, a liner that is open at one end and has a rim at its open end, and a lid, the lid having an outwardly-extending rim, a filter, and an outlet; (b) adding paint to the liner while the liner is upright; (c) securing the lid and the liner to create a reservoir for the paint wherein the rim of the lid sits on top of the rim of the liner when the lid is secured to the liner; (d) inverting the spray gun and attaching it to the outlet of the lid; (e) placing the spray gun in an upright position with the liner and the lid above the spray gun; and (f) activating the spray gun to withdraw paint from the liner and through the filter and the outlet so as to spray the paint from the spray gun. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of preparing a paint spray gun, the method comprising:
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(a) providing a paint spray gun, a liner that is open at one end and has a rim at its open end, and a lid, the lid having an outwardly-extending rim, an outlet, and an integral filter that covers the outlet; (b) adding paint to the liner while the liner is upright; (c) securing the lid and the liner to create a reservoir for the paint wherein the rim of the lid sits on top of the rim of the liner when the lid is secured to the liner; (d) inverting the spray gun and attaching it to the outlet of the lid; (e) purging air from the liner; and (f) with the liner and the lid above the spray gun, activating the spray gun to withdraw paint from the liner and through the filter and the outlet, wherein the liner collapses as paint is withdrawn from the liner, so as to spray the paint from the spray gun. - View Dependent Claims (11, 12, 13)
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14. A method of providing a paint spraying system, the method comprising:
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(a) providing an outer container having volumetric measurement indicia visible to a user; (b) providing a collapsible liner; (c) providing a lid for cooperative engagement with the liner, the lid comprising an outlet and a filter over the outlet to filter paint before it passes through the outlet; (d) placing the liner in the outer container, whereby the volumetric measurement indicia account for space between the liner and the outer container; (e) adding a volume of paint to the liner; (f) mixing paint in the liner; (g) securing the lid and the liner to a paint spray gun to enable paint to flow through the filter and the outlet and be dispensed by the spray gun; and (h) inverting the paint spray gun so as to secure the lid and the liner to the spray gun while it is inverted. - View Dependent Claims (15, 16, 17)
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Specification
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Litigation Data
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Current Assignee3M Innovative Properties Company (3M Company)
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Original Assignee3M Innovative Properties Company (3M Company)
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InventorsJoseph, Stephen C.P., Bastow, David R., Salhus, Jerry E., Douglas, Malcolm F., Hartfel, Margaret A., Butler, Alan F.
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Primary Examiner(s)NGUYEN, DINH Q
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Application NumberUS12/401,637Publication NumberTime in Patent Office895 DaysField of Search239/8, 239/346, 239/345, 239/600, 239/379, 239/328, 239/327, 239/318, 239/525, 220/495.02, 220/495.06, 141/2US Class Current239/8CPC Class CodesB01D 35/02 Filters adapted for locatio...B01D 35/28 Strainers not provided for ...B05B 7/2408 characterised by the contai...B05B 7/247 a liquid being fed by gravi...B05B 7/2478 Gun with a container which,...B05B 7/2481 with a flexible container f...B29C 2791/006 Using vacuumB29C 2791/007 Using fluid under pressureB29C 51/08 Deep drawing or matched-mou...B29C 51/10 Forming by pressure differe...B29K 2023/0633 LDPE, i.e. low density poly...Y10S 239/14 Paint sprayers
