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US4475835A Expired / Lapsed US ⏱️ 0.0 years remaining

Device for cleaning soil from oven surfaces

Assignee: Clorox Co
•
Filing: 1982-09-21
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Granted: 1984-10-09
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Expires: 2002-09-21
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Abstract

Abstract Disclosed is a device for applying a cleaning solution to a surface and for applying a scrubbing action to such surface. The device comprises a reservoir, a piercable closing means enclosing the reservoir to retain the cleaning solution therein and an abrasive scrubbing pad over the open mouth of the reservoir through which cleaning solution can be extruded onto the soiled surface and which can be used to provide a scrubbing action to the soil.

Inventors

  • 👤 Gilles M. Verboom
  • 👤 Thomas L. Welsh
  • 👤 Henry P. Furgal

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 17:14
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/34; A47L13/16; A47L13/17

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 359 words
A device for applying a caustic containing cleaning solution to soil on a soiled oven surface and which is capable of simultaneously applying a scrubbing action to the soil, which device comprises a reservoir, a piercable closing means capable of keeping the cleaning solution in the reservoir until it is pierced and an abrasive, cleaning solution permeable, scrubbing pad of a non-woven screen of fibers formed with an adhesive to bind them together, the reservoir being generally oblong having a top, first and second elongated sidewalls depending from the top, third and fourth endwalls depending from the top, the sidewalls and endwalls terminating in a common plane to form an open bottom to the reservoir, and a lip surrounding the open bottom formed by a coplanar extension of the sidewalls and endwalls extending transversely outwardly from the open bottom a sufficient distance to permit the firm attachment of the abrasive scrubbing pad thereto, the top, sidewalls, endwalls and lip being formed as a unitary structure from a flexible polymeric sheet material and where the reservoir is of a size which will fit comfortably in a user's hand such that the sidewalls are from about 31/2 to 41/2 inches long, the endwalls are about 11/2 to 21/2 inches long and the reservoir had a depth of about 11/2 to 21/2 inches, the sidewalls each having an elongated indentation therein extending parallel to the top and suitable for gripping between the user's thumb and fingers and which assist in providing the reservoir with compressibility when the sidewalls are squeezed inwardly towards each other, the top having a crown-like ridge around the perimeter thereof to provide rigidity thereto when the sidewalls are squeezed, the endwalls being of sufficient rigidity to support the top without collapsing when scrubbing pressure is applied to the top in a direction normal to the surface being cleaned; the piercable closing means being positioned so as to be capable of supplying cleaning solution to the open bottom of the reservoir upon being pierced; the abrasive scrubbing pad extending over the entire open bottom of the reservoir and being firmly attached to the lip thereof around its entire perimeter.
Claim 2
Independent Claim 359 words
A device for applying a caustic containing cleaning solution to soil on a soiled oven surface and which is capable of simultaneously applying a scrubbing action to the soil, which device comprises a reservoir, a piercable closing means capable of keeping the cleaning solution in the reservoir until it is pierced and an abrasive, cleaning solution permeable, scrubbing pad of a non-woven screen of fibers formed with an adhesive to bind them together, the reservoir being generally oblong having a top, first and second elongated sidewalls depending from the top, third and fourth endwalls depending from the top, the sidewalls and endwalls terminating in a common plane to form an open bottom to the reservoir, and a lip surrounding the open bottom formed by a coplanar extension of the sidewalls and endwalls extending transversely outwardly from the open bottom a sufficient distance to permit the firm attachment of the abrasive scrubbing pad thereto, the top, sidewalls, endwalls and lip being formed as a unitary structure from a flexible polymeric sheet material and where the reservoir is of a size which will fit comfortably in a user's hand such that the sidewalls are from about 31/2 to 41/2 inches long, the endwalls are about 11/2 to 21/2 inches long and the reservoir had a depth of about 11/2 to 21/2 inches, the sidewalls each having an elongated indentation therein extending parallel to the top and suitable for gripping between the user's thumb and fingers and which assist in providing the reservoir with compressibility when the sidewalls are squeezed inwardly towards each other, the top having a crown-like ridge around the perimeter thereof to provide rigidity thereto when the sidewalls are squeezed, the endwalls being of sufficient rigidity to support the top without collapsing when scrubbing pressure is applied to the top in a direction normal to the surface being cleaned; the piercable closing means being positioned so as to be capable of supplying cleaning solution to the open bottom of the reservoir upon being pierced; the abrasive scrubbing pad extending over the entire open bottom of the reservoir and being firmly attached to the lip thereof around its entire perimeter.
Claim 3
Dependent Claim 17 words
The device of claim 1 wherein the closing means comprises a piercable pouch located within the reservoir.
Claim 4
Dependent Claim 21 words
The device of claim 1 wherein the closing means comprises a piercable membrane stretched across the open bottom of the reservoir.
Claim 5
Dependent Claim 23 words
The device of claim 1 wherein the polymeric material is selected from the group consisting of polyethylene, polypropylene, a polyester and polyvinyl chloride.
Claim 6
Dependent Claim 13 words
The device of claim 1 wherein the polymeric material is cross-linked polyethylene foam.
Claim 7
Dependent Claim 32 words
The device of claim 1 wherein the closing means is formed from a film selected from the group consisting of polyethylene, nylon, polyvinyl chloride and a polyester sandwiched between nylon and/or polyethylene.
Claim 8
Dependent Claim 12 words
The device of claim 1 wherein the cleaning solution is caustic based.
Claim 9
Dependent Claim 32 words
The device of claim 7 wherein the cleaning solution comprises NaOH, water, a surfactant and a viscosity controller to provide it with a viscosity of 200 to 2,000 centipoise at room temperature.
Claim 10
Dependent Claim 28 words
The device of claim 1 wherein the scrubbing pad is of a non-woven screen of nylon or polyester fibers formed with an adhesive agent to bind them together.
Claim 11
Dependent Claim 15 words
The device of claim 9 wherein a scouring agent is added to the non-woven screen.

References Cited (Backward Citations)

US2961677A Cited
FR77632E Cited
US3386793A Cited
US3466131A Cited
EP0042806A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1987-10-09 1988-04-09 1988-10-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-10-09 1992-04-09 1992-10-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-10-09 1996-04-09 1996-10-09 $7700.00 Window Closed / Lapsed

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