Patent US4287633A successfully refreshed from Google Patents.
US4287633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning pad
Assignee: Individual
•
Filing: 1979-11-19
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Granted: 1981-09-08
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Expires: 1999-11-19
Abstract
Abstract A flexible and resilient abrading or detergent pad as a cleansing, scouring and smoothing or finishing device having a pervious and knitted outer covering of synthetic yarn and an engaging core of synthetic plastic sponge frictionally biased against the inner surfaces of the covering walls, the transverse edge areas of the covering and core being compressed and integrated for anchorage of the core to the covering. For manufacture, the sponge core is inserted into the sleeve, the assembly compressed and the transverse edge areas of both covering and core while under compression integrated or connected while under further compression at such areas. Trimming of the reduced and integrated or connected edges takes place following said procedures.
Inventors
- 👤 George Gropper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:09
CPC Classifications
A; A47; A47L; A47L17/00; A47L17/04; A47L17/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
135 words
A yieldable, compact, unitary, pervious, shape-retaining and flexible abrading pad comprising: a main compressed and resilient plastic sponge core body, said body being compressed throughout the full area thereof, and a pervious and abrasive plastic cover forming a tight-fitting against the walls of the said compressed and resilient sponge throughout the full respective areas thereof, said compressed and resilient sponge core body and said tight-fitting cover having corresponding transverse edge areas connected and reduced into strip form for anchorage connection to prevent shifting at such areas between said sponge core body and the cover when the pad is in use, the frictional connection between other areas of said sponge core body and said cover also preventing separation thereabout, said cover having top and bottom walls and connecting longitudinal edge areas formed of a continuous knit.
Claim 2
Dependent Claim
135 words
A yieldable, compact, unitary, pervious, shape-retaining and flexible abrading pad comprising: a main compressed and resilient plastic sponge core body, said body being compressed throughout the full area thereof, and a pervious and abrasive plastic cover forming a tight-fitting against the walls of the said compressed and resilient sponge throughout the full respective areas thereof, said compressed and resilient sponge core body and said tight-fitting cover having corresponding transverse edge areas connected and reduced into strip form for anchorage connection to prevent shifting at such areas between said sponge core body and the cover when the pad is in use, the frictional connection between other areas of said sponge core body and said cover also preventing separation thereabout, said cover having top and bottom walls and connecting longitudinal edge areas formed of a continuous knit.
Claim 3
Dependent Claim
28 words
An abrading pad as set forth in claim 1 wherein said knit of the cover is formed of a yarn in strip form and cut from Mylar film.
Claim 4
Dependent Claim
37 words
An abrading pad as set forth in claim 1 wherein said knit of the cover is formed of a yarn in strip form and cut from Mylar film, said yarn including a fibrous and soft yarn element.
Claim 5
Dependent Claim
19 words
An abrading pad as set forth in claim 3 wherein said plastic sponge core body is formed of polyurethane.
Claim 6
Dependent Claim
22 words
An abrading pad as set forth in claim 4 wherein said fibrous and soft yarn element is formed of twisted Nylon fiber.
References Cited (Backward Citations)
US2958885A
Cited
FR1189547A
Cited
US3040353A
Cited
US3252176A
Cited
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Cited
US3849225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-07 | 1985-03-09 | 1985-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-07 | 1989-03-09 | 1989-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-07 | 1993-03-09 | 1993-09-08 | $7700.00 | Window Closed / Lapsed |