Patent US4925327A successfully refreshed from Google Patents.
US4925327A
Expired / Lapsed
US
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Liquid applicator with metering insert
Assignee: 3M Co
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Filing: 1988-09-28
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Granted: 1990-05-15
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Expires: 2008-09-28
Abstract
Abstract A liquid applicator as provided which is particularly useful in applying pre-operative surgical scrubs or paints to skin. The article is provided with an inner layer of porous metering material and an outer layer of open-cell foam sponge material which regulate the flow of liquid therethrough to provide acceptable wetting of the foam sponge while preventing dripping therefrom. The applicator includes an air vent spaced from the applicator head to allow air to flow into the applicator while liquid is being dispensed. This is a continuation of application Ser. No. 904,788, filed Sept. 4, 1986, now abandoned, which is a continuation-in-part of Ser. No. 798,989, filed 11/18/85, now abandoned.
Inventors
- 👤 David F. Wirt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:06
CPC Classifications
B; B65; B65D; B65D47/00; B65D47/42; A; A61; A61M; A61M35/00; A61M35/003; A61M35/006
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
139 words
An article useful as a dispenser for the application of pre-operative surgical scrubs or paints to skin comprising (a) a hollow elongate member having a major orifice at one end thereof; (b) a layer of unfoamed, rigid, porous metering material disposed over said major orifice, said porous metering material having a reservoiring capacity of less than about 5.0 cc/gm and said layer capable of regulating the flow of liquid therethrough; (c) a layer of sponge material having a permanent compression set ratio of about 1.5 to about 10 disposed over the exterior surface of said layer of porous metering material; and (d) an air vent in said hollow elongate member capable of providing air flow between the exterior of said hollow elongate member and any solution to be applied by said applicator which is contained in said elongate member.
Claim 2
Dependent Claim
139 words
An article useful as a dispenser for the application of pre-operative surgical scrubs or paints to skin comprising (a) a hollow elongate member having a major orifice at one end thereof; (b) a layer of unfoamed, rigid, porous metering material disposed over said major orifice, said porous metering material having a reservoiring capacity of less than about 5.0 cc/gm and said layer capable of regulating the flow of liquid therethrough; (c) a layer of sponge material having a permanent compression set ratio of about 1.5 to about 10 disposed over the exterior surface of said layer of porous metering material; and (d) an air vent in said hollow elongate member capable of providing air flow between the exterior of said hollow elongate member and any solution to be applied by said applicator which is contained in said elongate member.
Claim 3
Dependent Claim
25 words
An article accordance with claim 1 wherein said porous metering material is capable of limiting liquid flow therethrough to between about 0.25 and 10 mls/sec.
Claim 4
Dependent Claim
24 words
An article in accordance with claim 2 wherein the average pore size of said porous metering material is between about 1 and 2,000 microns.
Claim 5
Dependent Claim
23 words
An article in accordance with claim 2 wherein the void volume of said porous metering material is between about 10 and 70 percent.
Claim 6
Dependent Claim
40 words
An article in accordance with claim 2 wherein said porous metering material is a high density polyethylene having an average pore size of between about 60 and 100 microns and a void volume of between about 40 and 60 percent.
Claim 7
Dependent Claim
35 words
An article in accordance with claim 1 wherein said article further comprises a reservoir containing the solution to be applied by said article, which reservoir is contained within or communicates with said hollow elongate member.
Claim 8
Dependent Claim
51 words
An article in accordance with claim 6 wherein said hollow elongate member comprises a second major orifice at the end opposite said first major orifice and a fixation means formed on the interior of said hollow elongate member adjacent said second major orifice, said fixation means capable of engaging said reservoir.
Claim 9
Dependent Claim
47 words
An article in accordance with claim 1 wherein (a) said hollow elongate member includes a flange disposed at said major orifice, said flange extending radially outward from said major orifice; and (b) said layer of porous metering material is disposed adjacent the interior surface of said flange.
Claim 10
Dependent Claim
33 words
An article in accordance with claim 8 wherein said flange is disposed so as to form an angle of about 30 to 90 degrees with the longitudinal axis of said hollow elongate member.
Claim 11
Dependent Claim
24 words
An article in accordance with claim 1 wherein said sponge material has a porosity of between about 10 and 100 pores per linear inch.
Claim 12
Dependent Claim
243 words
An article useful as a dispenser for the application of a liquid to a surface comprising (a) a hollow elongate member having a major orifice at one and thereof and a second major orifice at the end opposite said first major orifice; a fixation means formed on the interior of said hollow elongate member adjacent said second major orifice; and a flange projecting radially into the interior of said hollow elongate member, said flange located adjacent said fixation means and spaced from said second major orifice by said fixation means; (b) a layer of unfoamed porous metering material disposed over said major orifice, said porous metering material having a reservoiring capacity of less than about 5.0 cc/gm and said layer capable of regulating the flow of liquid therethrough; (c) a layer of sponge material having a permanent compression set ratio of about 1.5 to about 10 disposed over the exterior surface of said layer of porous metering material; (d) an air vent in said hollow elongate member capable of providing air flow between the exterior and interior of said hollow elongate member, which air vent comprises an L-shaped slot having one leg recessed through said fixation means and the other leg recessed through an upper portion of said flange; and (e) a reservoir containing the solution to be applied by said article which reservoir is contained within or communicates with said hollow elongate member, and which reservoir is engaged by said fixation means.
Claim 13
Dependent Claim
243 words
An article useful as a dispenser for the application of a liquid to a surface comprising (a) a hollow elongate member having a major orifice at one and thereof and a second major orifice at the end opposite said first major orifice; a fixation means formed on the interior of said hollow elongate member adjacent said second major orifice; and a flange projecting radially into the interior of said hollow elongate member, said flange located adjacent said fixation means and spaced from said second major orifice by said fixation means; (b) a layer of unfoamed porous metering material disposed over said major orifice, said porous metering material having a reservoiring capacity of less than about 5.0 cc/gm and said layer capable of regulating the flow of liquid therethrough; (c) a layer of sponge material having a permanent compression set ratio of about 1.5 to about 10 disposed over the exterior surface of said layer of porous metering material; (d) an air vent in said hollow elongate member capable of providing air flow between the exterior and interior of said hollow elongate member, which air vent comprises an L-shaped slot having one leg recessed through said fixation means and the other leg recessed through an upper portion of said flange; and (e) a reservoir containing the solution to be applied by said article which reservoir is contained within or communicates with said hollow elongate member, and which reservoir is engaged by said fixation means.
Claim 14
Dependent Claim
219 words
An article useful as a dispenser for the application of a liquid to a surface comprising (a) a hollow elongate member having a major orifice at one end thereof and a flange disposed at said major orifice, said flange extending radially outward from said major orifice and disposed so as to form an angle of about 30 to 90 degrees with the longitudinal axis of said hollow elongate member; (b) a layer of unfoamed porous metering material disposed over said major orifice adjacent the interior surface of said flange, said porous metering material having a reservoiring capacity of less that about 5.0 cc/gm and said layer capable of regulating the flow of liquid therethrough; (c) a layer of sponge material having a permanent compression set ratio of about 1.5 to about 10 disposed over the exterior surface of said layer of porous metering material; (d) an air vent in said hollow elongate member capable of providing air flow between the exterior and interior of said hollow elongate member; and (e) a gasket-like bonding insert disposed between said layer of porous metering material and said layer of sponge material, said bonding insert comprising a thermoplastic or heat-activatable material filled with an inductively active material, and said bonding insert adhered to the periphery of said flange and to said sponge material.
Claim 15
Dependent Claim
219 words
An article useful as a dispenser for the application of a liquid to a surface comprising (a) a hollow elongate member having a major orifice at one end thereof and a flange disposed at said major orifice, said flange extending radially outward from said major orifice and disposed so as to form an angle of about 30 to 90 degrees with the longitudinal axis of said hollow elongate member; (b) a layer of unfoamed porous metering material disposed over said major orifice adjacent the interior surface of said flange, said porous metering material having a reservoiring capacity of less that about 5.0 cc/gm and said layer capable of regulating the flow of liquid therethrough; (c) a layer of sponge material having a permanent compression set ratio of about 1.5 to about 10 disposed over the exterior surface of said layer of porous metering material; (d) an air vent in said hollow elongate member capable of providing air flow between the exterior and interior of said hollow elongate member; and (e) a gasket-like bonding insert disposed between said layer of porous metering material and said layer of sponge material, said bonding insert comprising a thermoplastic or heat-activatable material filled with an inductively active material, and said bonding insert adhered to the periphery of said flange and to said sponge material.
References Cited (Backward Citations)
DE180182C
Cited
US348403A
Cited
US436822A
Cited
US715296A
Cited
US875422A
Cited
US965075A
Cited
AT60493B
Cited
US1074522A
Cited
US1497229A
Cited
US2217027A
Cited
US2244939A
Cited
US2260500A
Cited
US2529036A
Cited
US2631049A
Cited
US2761833A
Cited
US2744661A
Cited
FR1086705A
Cited
US2807288A
Cited
US2820234A
Cited
US2815889A
Cited
US2853727A
Cited
FR1205411A
Cited
US3156272A
Cited
US3133309A
Cited
US3132370A
Cited
US3129452A
Cited
US3148401A
Cited
US3189223A
Cited
US3248017A
Cited
US3324855A
Cited
US3393963A
Cited
US3362640A
Cited
US3349966A
Cited
US3356095A
Cited
US3614245A
Cited
US3471245A
Cited
US3682558A
Cited
US3760987A
Cited
US3756472A
Cited
US3774609A
Cited
US3830241A
Cited
US3847151A
Cited
US3958571A
Cited
US3876314A
Cited
US3891331A
Cited
US3896808A
Cited
US3981304A
Cited
US3955712A
Cited
US4008968A
Cited
US4111567A
Cited
US4008718A
Cited
US4078865A
Cited
US4342522A
Cited
US4225254A
Cited
US4183684A
Cited
US4148318A
Cited
US4218155A
Cited
US4189245A
Cited
US4229116A
Cited
US4291491A
Cited
US4329990A
Cited
US4415288A
Cited
US4498796A
Cited
US4507111A
Cited
GB2119235A
Cited
US4463880A
Cited
US4484827A
Cited
US4594015A
Cited
US4588319A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-14 | 1993-11-13 | 1994-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-14 | 1997-11-13 | 1998-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-14 | 2001-11-13 | 2002-05-15 | $7700.00 | Window Closed / Lapsed |