US4279057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable spotting tool for carpets
Assignee: Individual
•
Filing: 1980-03-03
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Granted: 1981-07-21
•
Expires: 2000-03-03
Abstract
Abstract Spots and stains are completely removed from wall-to-wall carpeting, upholstery fabric, and the like, by using a generally flat, hollow tool, which is inserted beneath the carpet or fabric without completely removing the latter from the floor or piece of furniture which it covers. The flat tool has a plurality of spaced perforations in its upper wall; and its interior is releasably connected by a tubular extension member to a vacuum supply which creates a localized vacuum immediately beneath the portion of the carpet that is to be cleaned. A liquid cleaning medium or solvent is then applied to the spot or stain which is located above the tool; and after it passes through the carpet or fabric it is drawn into the tool and through the extension member to the vacuum supply. The tool has a plane, perforated upper wall, and a compound lower wall, a first portion of which extends parallel to the upper wall to form a flat base for supporting the tool during use, and a second inclined portion of which extends upwardly toward the front of the tool so that the tool is tapered to ease its insertion beneath the carpet or upholstery fabric.
Inventors
- 👤 Edward A. Restivo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:26
CPC Classifications
D; D06; D06F; D06F43/00; D06F43/002
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
169 words
A portable spot removing device for fabric covers, comprising a vacuum source, a hollow, generally flat tool having a plane upper wall, a lower wall spaced beneath and attached to said upper wall, and forward and rear walls, respectively, extending transversely between said upper and lower walls, said upper wall having therethrough a plurality of spaced apertures, and disposed to be placed horizontally beneath the portion of the fabric cover that is to be cleaned, and means for connecting said vacuum source to the interior of said tool, said means comprising a tubular member connected at one end to an opening in said rear wall of said tool, and having its opposite end operatively connected to said vacuum source, and at least a portion of said lower wall of said tool being inclined upwardly from adjacent said rear wall to said forward wall, whereby the thickness of the tool is tapered adjacent its forward wall to ease its insertion beneath a fabric cover and the item which it covers.
Claim 2
Dependent Claim
169 words
A portable spot removing device for fabric covers, comprising a vacuum source, a hollow, generally flat tool having a plane upper wall, a lower wall spaced beneath and attached to said upper wall, and forward and rear walls, respectively, extending transversely between said upper and lower walls, said upper wall having therethrough a plurality of spaced apertures, and disposed to be placed horizontally beneath the portion of the fabric cover that is to be cleaned, and means for connecting said vacuum source to the interior of said tool, said means comprising a tubular member connected at one end to an opening in said rear wall of said tool, and having its opposite end operatively connected to said vacuum source, and at least a portion of said lower wall of said tool being inclined upwardly from adjacent said rear wall to said forward wall, whereby the thickness of the tool is tapered adjacent its forward wall to ease its insertion beneath a fabric cover and the item which it covers.
Claim 3
Dependent Claim
65 words
A portable spot removing device as defined in claim 1, wherein said means comprises a plurality of said tubular members releasably attachable one to the other to form an elongate tubular connection between said tool and said vacuum source, at least the first tubular member connected to said tool being rigid thereby to provide a handle for manipulation of the tool beneath a fabric cover.
Claim 4
Dependent Claim
40 words
A portable spot removing device as defined in claim 2, wherein said upper wall has an integral flange extending around the outside thereof, and projecting slightly above the upper surface of said upper wall to form a central recess therein.
Claim 5
Dependent Claim
131 words
A portable spotting tool adapted to be inserted manually beneath a fabric cover, or the like, without removing the cover, comprising a generally flat, hollow housing having a plane, perforated upper wall, a compound lower wall spaced beneath said upper wall, and forward and rear edges, respectively, and means for connecting the interior of said housing to a vacuum supply to create a vacuum in said housing beneath said perforated upper wall, said lower wall having a first portion thereof disposed in spaced, parallel, registering relation with part of said upper wall and operativve to provide a supporting surface for said tool during its use, and having a second portion thereof disposed in an inclined plane intersecting said forward edge of said housing and said first portion of said lower wall.
Claim 6
Dependent Claim
131 words
A portable spotting tool adapted to be inserted manually beneath a fabric cover, or the like, without removing the cover, comprising a generally flat, hollow housing having a plane, perforated upper wall, a compound lower wall spaced beneath said upper wall, and forward and rear edges, respectively, and means for connecting the interior of said housing to a vacuum supply to create a vacuum in said housing beneath said perforated upper wall, said lower wall having a first portion thereof disposed in spaced, parallel, registering relation with part of said upper wall and operativve to provide a supporting surface for said tool during its use, and having a second portion thereof disposed in an inclined plane intersecting said forward edge of said housing and said first portion of said lower wall.
Claim 7
Dependent Claim
52 words
A portable spotting tool as defined in claim 4, wherein said second portion of said lower wall is inclined at an acute angle to said upper wall and at an obtuse angle to said first portion of said lower wall, whereby the thickness of said tool is tapered adjacent its forward edge.
Claim 8
Dependent Claim
30 words
A portable spotting tool as defined in claim 5, wherein the exterior edges of said tool are rounded to prevent snagging when the tool is inserted beneath a fabric cover.
Claim 9
Dependent Claim
64 words
A portable spotting tool as defined in claim 4, wherein said connecting means comprises a plurality of tubular extension members releasably attachable coaxially to each other and to an opening in said rear edge of said tool to provide a handle for manipulating said tool beneath a carpet, or the like, and operable to connect the interior of said tool to said vacuum supply.
Claim 10
Dependent Claim
31 words
A portable spotting tool as defined in claim 4, including a bead flange integral with and surrounding said upper wall, and projecting slightly above the upper surface of said upper wall.
Claim 11
Dependent Claim
30 words
A portable spotting tool as defined in claim 4, wherein said upper wall has therethrough a plurality of spaced perforations arranged in parallel rows and parallel columns intersecting said rows.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-20 | 1985-01-19 | 1985-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-20 | 1989-01-19 | 1989-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-20 | 1993-01-19 | 1993-07-21 | $7700.00 | Window Closed / Lapsed |