APPARATUS FOR SPRAYING LIQUIDS, AND DISPOSABLE CONTAINERS AND LINERS SUITABLE FOR USE THEREWITH
First Claim
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1. A method of preparing a gravity fed liquid spraying apparatus comprising the steps of:
- a) providing a container having a base and sidewalls, or a sidewall, extending from the base to an open end;
b) with the container standing upright on the base, adding liquid to the container through the open end;
c) attaching to the container a lid having an outlet, the combination of the lid and container comprising a reservoir;
d) connecting a spray gun to the outlet of the lid;
e) inverting the combination of the spray gun and reservoir so that the reservoir is above the spray gun; and
f) opening an air hole in the container.
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Accused Products
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has a shape that corresponds to and is a close fit within the interior of the container (12) and collapses as fluid is withdrawn from within the liner (13) during operation of the spray gun (1).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(12) has a vent (12A) in the base end for admitting air between the container (12) and the liner (13) as liquid is withdrawn from within the liner (13).
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Citations
10 Claims
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1. A method of preparing a gravity fed liquid spraying apparatus comprising the steps of:
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a) providing a container having a base and sidewalls, or a sidewall, extending from the base to an open end;
b) with the container standing upright on the base, adding liquid to the container through the open end;
c) attaching to the container a lid having an outlet, the combination of the lid and container comprising a reservoir;
d) connecting a spray gun to the outlet of the lid;
e) inverting the combination of the spray gun and reservoir so that the reservoir is above the spray gun; and
f) opening an air hole in the container. - View Dependent Claims (2, 3, 4)
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5. A method of preparing a gravity fed liquid spraying apparatus comprising the steps of:
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a) providing a liner having a base and sidewalls, or a sidewall, and an opening and being capable of standing unsupported on the base with the side walls extended and upright;
b) placing the liner in an outer container;
c) with the liner standing upright on the base, adding liquid to the liner through the opening;
d) attaching to the combination of the outer container and liner a lid which covers the opening of the liner and has an outlet, the combination of liner, outer container and lid comprising a reservoir;
e) connecting a spray gun to the outlet of the lid;
f) inverting the combination of the spray gun and reservoir so that the reservoir is above the spray gun. - View Dependent Claims (6, 7, 8, 9)
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10. A method of preparing a gravity fed liquid spraying apparatus comprising the steps of:
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a) providing a sealed container containing liquid and having an outlet end for attachment to a spray gun apparatus;
b) opening the outlet end to allow flow of liquid to the spray gun;
c) connecting a spray gun apparatus to the outlet of the sealed container while the outlet end is above the liquid in the container;
d) inverting the combination of the spray gun and sealed container so that the sealed container is above the spray gun; and
e) opening an air vent in the sealed container.
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Specification
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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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InventorsBastow, David R., Salhus, Jerry E., Douglas, Malcolm F., Hartfel, Margaret A., Butler, Alan F., Joseph, Stephen C. P.
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current239/379
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CPC 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
