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US4240760A Expired / Lapsed US ⏱️ 0.0 years remaining

Foam scrubbing device incorporating a cleanser

Assignee: Brewster Laboratories Inc
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Filing: 1978-07-21
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Granted: 1980-12-23
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Expires: 1998-07-21
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Abstract

Abstract A foam scrubbing device incorporating a cleanser formed from two layers of foam material having different characteristics heat sealed along their respective peripheries is provided. The two layers of foam material have different cell coarseness to provide varying degrees of abrasiveness, permeability and flexibility. The device is formed with the different layers of foam material having different thicknesses to permit substantially equal amounts of cleanser to pass through each layer.

Inventors

  • 👤 Stella R. Levine

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 05:47
CPC Classifications
A; A47; A47K; A47K7/00; A47K7/02; A47K7/03

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 126 words
A foam scrubbing device comprising: a glycerine soap bar; a first dense foam layer of a foam material having a given porosity and thickness for allowing a given amount of wetted soap to pass therethrough; a second porous foam layer of foam material having substantially the same shape as said first layer, greater porosity and being thinner than said first dense layer for allowing about the same amount of wetted soap to pass therethrough as passes through said first dense layer; said glycerine soap bar disposed between said first and second layers, said first and second foam layers heat sealed about the peripheral edges thereof for encapsulating said soap bar, whereby the different porosities of the two layers provide different abrasive characteristics for cleansing and scrubbing.
Claim 2
Dependent Claim 126 words
A foam scrubbing device comprising: a glycerine soap bar; a first dense foam layer of a foam material having a given porosity and thickness for allowing a given amount of wetted soap to pass therethrough; a second porous foam layer of foam material having substantially the same shape as said first layer, greater porosity and being thinner than said first dense layer for allowing about the same amount of wetted soap to pass therethrough as passes through said first dense layer; said glycerine soap bar disposed between said first and second layers, said first and second foam layers heat sealed about the peripheral edges thereof for encapsulating said soap bar, whereby the different porosities of the two layers provide different abrasive characteristics for cleansing and scrubbing.
Claim 3
Dependent Claim 27 words
The foam scrubbing device of claim 1, wherein said foam material is a polyester-polyurethane foam having a density of about 2 to 4 pounds per cubic foot.
Claim 4
Dependent Claim 43 words
The foam scrubbing device of claim 2, wherein said dense foam material has a pore count of about 50 to 70 pores per lineal inch and said porous foam layer has a pore count of about 20 to 40 pores per lineal inch.
Claim 5
Dependent Claim 14 words
The foam scrubbing device of claim 3, wherein said device is substantially diamond shape.
Claim 6
Dependent Claim 39 words
The foam scrubbing device of claim 3 wherein said dense foam material has a pore count of about 60 pores per lineal inch and said porous foam layer has a pore count of about 30 pores per lineal inch.
Claim 7
Dependent Claim 170 words
A foam scrubbing device formed from a polyesterpolyurethane foam material having a density of from about 2 to 4 pounds per cubic foot, comprising: a first dense foam layer having about 50 to 70 pores per lineal inch; a second porous foam layer having about 20 to 40 pores per lineal inch, each said first dense and second porous foam layer having substantially the same shape, said first porous layer having a thickness greater than said second dense layer; said first dense and said second porous foam layers heat sealed about their respective peripheries for forming a sealed cavity therebetween; a deep cleansing glycerine soap bar disposed in said cavity, said glycerine soap bar having from about 3 to 25 percent glycerine, from about 35 to 60 percent sodium soap, from about 1 to 5 percent sodium castorate, from about 10 to 30 percent sugar, from about 3 to 15 percent ethylenediaminetetraacetic acid, and the balance water, all percentages being weight percent, based on the total weight of the composition.
Claim 8
Dependent Claim 170 words
A foam scrubbing device formed from a polyesterpolyurethane foam material having a density of from about 2 to 4 pounds per cubic foot, comprising: a first dense foam layer having about 50 to 70 pores per lineal inch; a second porous foam layer having about 20 to 40 pores per lineal inch, each said first dense and second porous foam layer having substantially the same shape, said first porous layer having a thickness greater than said second dense layer; said first dense and said second porous foam layers heat sealed about their respective peripheries for forming a sealed cavity therebetween; a deep cleansing glycerine soap bar disposed in said cavity, said glycerine soap bar having from about 3 to 25 percent glycerine, from about 35 to 60 percent sodium soap, from about 1 to 5 percent sodium castorate, from about 10 to 30 percent sugar, from about 3 to 15 percent ethylenediaminetetraacetic acid, and the balance water, all percentages being weight percent, based on the total weight of the composition.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1983-12-23 1984-06-23 1984-12-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1987-12-23 1988-06-23 1988-12-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1991-12-23 1992-06-23 1992-12-23 $7700.00 Window Closed / Lapsed

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