US3908218A — Cleaning pad

Claim 1

Independent Claim 156 words

A cleaning pad, comprising: a bag composed of an exterior plastics textile, and a filler in said bag comprised of superimposed layers of open-work plastics material, said exterior textile comprising interwoven plastics multifilament strands and monofilaments, the multifilament strands running side-by-side in one direction and comprising succesive slightly laterally spaced, generally parallel multifilament strands which are of generally sinusoidal form, with the individual successive substantially sinusoidal multifilament strands forming alternate peaks and valleys of uniform lengths which are transversely aligned in directions perpendicular to said strands, and said monofilaments including transversely spaced monofilaments running at right angles to, and alternately under and over, in a zig-zag manner, the successive aligned peaks and valleys of successive sinusoidal multifilament strands, all in an arrangement affording the plastics textile material with a ribbed surface structure, and also in one wherein the substantially sinusoidal multifilament strands are resiliently longitudinally stretchable in response to tension by straightening of said sinusoidal form.

Claim 2

Dependent Claim 156 words

A cleaning pad, comprising: a bag composed of an exterior plastics textile, and a filler in said bag comprised of superimposed layers of open-work plastics material, said exterior textile comprising interwoven plastics multifilament strands and monofilaments, the multifilament strands running side-by-side in one direction and comprising succesive slightly laterally spaced, generally parallel multifilament strands which are of generally sinusoidal form, with the individual successive substantially sinusoidal multifilament strands forming alternate peaks and valleys of uniform lengths which are transversely aligned in directions perpendicular to said strands, and said monofilaments including transversely spaced monofilaments running at right angles to, and alternately under and over, in a zig-zag manner, the successive aligned peaks and valleys of successive sinusoidal multifilament strands, all in an arrangement affording the plastics textile material with a ribbed surface structure, and also in one wherein the substantially sinusoidal multifilament strands are resiliently longitudinally stretchable in response to tension by straightening of said sinusoidal form.

Claim 3

Dependent Claim 109 words

A cleaning pad, comprising: a porous bag composed of a plastics textile; and a filler in said bag composed of a sheet of relatively stiff and resilient openwork, plastics net, folded a plurality of times each on parallel longitudinal fold lines spaced apart by substantially tHe width of the bag, and on parallel transverse fold lines at right angles to said longitudinal fold lines, in dimensions to fill said bag and in a manner affording a multiple-layer filling pad, with adjacent layers of the pad in facial contact, joined integrally along adjacent, uncreased edges thereof to afford bias forces tending to resiliently expand the pad and tauten the bag.

Claim 4

Dependent Claim 109 words

A cleaning pad, comprising: a porous bag composed of a plastics textile; and a filler in said bag composed of a sheet of relatively stiff and resilient openwork, plastics net, folded a plurality of times each on parallel longitudinal fold lines spaced apart by substantially tHe width of the bag, and on parallel transverse fold lines at right angles to said longitudinal fold lines, in dimensions to fill said bag and in a manner affording a multiple-layer filling pad, with adjacent layers of the pad in facial contact, joined integrally along adjacent, uncreased edges thereof to afford bias forces tending to resiliently expand the pad and tauten the bag.

Claim 5

Dependent Claim 97 words

A cleaning pad, comprising: an exterior bag composed of a loosely woven plastics textile material adapted for free passage of water therethrough, a resilient filler snugly fitted into and at least slightly stretching said bag, composed of a sheet of openwork, relatively stiff and resilient plastics net arranged into a compact multilayered bag-conforming configuration including a succession of intimately facially contacting fold layers integrally joined at adjacent uncreased edges which resiliently resist compressive deformation of the layers at the marginal bends between fold layers and which resiliently bias said pad to expand within and tauten said bag.

Claim 6

Dependent Claim 97 words

A cleaning pad, comprising: an exterior bag composed of a loosely woven plastics textile material adapted for free passage of water therethrough, a resilient filler snugly fitted into and at least slightly stretching said bag, composed of a sheet of openwork, relatively stiff and resilient plastics net arranged into a compact multilayered bag-conforming configuration including a succession of intimately facially contacting fold layers integrally joined at adjacent uncreased edges which resiliently resist compressive deformation of the layers at the marginal bends between fold layers and which resiliently bias said pad to expand within and tauten said bag.

Claim 7

Dependent Claim 81 words

The cleaning pad of claim 3, wherein said filler comprises a sheet of the plastics net folded a plurality of times each on parallel longitudinal fold lines spaced apart by substantially the width of the bag, and also end over end a plurality of times on parallel transverse fold lines spaced apart initially by a distance substantially shorter than the length of the bag, and then by progressively increasing the distances to a final distance substantially the length of the bag.

Claim 8

Dependent Claim 69 words

The subject matter of claim 3, wherein the filler is composed of a sheet of plastics net gathered at the center in an axial core, and with the remainder of said sheet arranged thereabout in a plurality of adjacent, concentric, spirally wrapped folds which form a roll conforming in width generally to the desired uncompressed thickness of the pad, and which are spirally wound tightly about said axial core.

Claim 9

Dependent Claim 21 words

The subject matter of claim 3, wherein the plastics textile bag is at least limitedly stretchable in at least one direction.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1978-09-29	1979-03-31	1979-09-30	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1982-09-29	1983-03-31	1983-09-30	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1986-09-29	1987-03-31	1987-09-30	$7700.00	Window Closed / Lapsed

Cleaning pad

Abstract

Inventors

Bibliographic Details

Claims Analysis

References Cited (Backward Citations)

USPTO Annuity & Maintenance Windows

Assigned Categories & Tags

Assign Category Tag