US4590120A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparent static reducing mat
Assignee: Individual
•
Filing: 1985-01-16
•
Granted: 1986-05-20
•
Expires: 2005-01-16
Abstract
Abstract A transparent static reducing mat has a transparent plastic substrate. A number of thin conducting essentially invisible fibers are on the substrate in a static-charge-draining conducting layer and are covered by a transparent partially conductive layer of plastic material contacting the conducting layer of thickness much less than the thickness of the transparent substrate.
Inventors
- 👤 William G. Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:46
CPC Classifications
A; A47; A47C; A47C31/00; A47C31/004; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31928; Y10T442/00; Y10T442/60; Y10T442/608; Y10T442/614
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
108 words
A transparent static reducing mat comprising, a transparent base of insulating plastic material having a top surface for carrying the weight of movable loads and a bottom surface for contacting carpeting to be protected, and a plurality of thin conducting essentially invisible electrically interconnected fibers above said base defining a static-charge-draining conducting layer, said mat being transparent so that the color and texture of carpeting or other material when in contact with said bottom surface shows through said top surface and said conducting layer, wherein said thin conducting essentially invisible electrically interconnected fibers are microscopically fine electrostatically conductive fibers chemically bonded to the surface of said transparent base.
Claim 2
Dependent Claim
108 words
A transparent static reducing mat comprising, a transparent base of insulating plastic material having a top surface for carrying the weight of movable loads and a bottom surface for contacting carpeting to be protected, and a plurality of thin conducting essentially invisible electrically interconnected fibers above said base defining a static-charge-draining conducting layer, said mat being transparent so that the color and texture of carpeting or other material when in contact with said bottom surface shows through said top surface and said conducting layer, wherein said thin conducting essentially invisible electrically interconnected fibers are microscopically fine electrostatically conductive fibers chemically bonded to the surface of said transparent base.
Claim 3
Dependent Claim
70 words
A transparent static reducing mat in accordance with claim 1 and further comprising, a thin transparent partially conductive layer of plastic material contacting said conducting layer of thickness much less than the thickness of said base, said mat being transparent so that the color and texture of carpeting or other material when in contact with said bottom surface shows through said base, conducting layer and said transparent partially conductive layer.
Claim 4
Dependent Claim
21 words
A transparent static-reducing mat in accordance with claim 2 wherein said conducting layer comprises a web of randomly disposed conducting fibers.
Claim 5
Dependent Claim
20 words
A transparent static reducing mat in accordance with claim 2 wherein said conducting layer comprises a rectangular grid of fibers.
Claim 6
Dependent Claim
79 words
A method of making the product of claim 2 which method includes the steps of, providing a hot extrudate of insulating plastic material, depositing said essentially invisible conductive fibers in said top surface of said hot extrudate and covering the conductive fibers on said top surface with said partially conductive transparent layer to form a transparently covered fibered substrate, and applying pressure between said bottom surface and said cover of said transparently covered fibered substrate and cooling the latter.
Claim 7
Dependent Claim
55 words
A method of making the product of claim 2 which method includes the steps of, coating said top surface with liquid resin to form said thin transparent partially conductive layer, depositing said plurality of thin conducting fibers on said resin randomly oriented, and heating the resined fibered base to dry or cure the sprayed coating.
Claim 8
Dependent Claim
23 words
A static reducing mat in accordance with claim 2 wherein said conducting layer is between said partially conductive layer and said top surface.
Claim 9
Dependent Claim
19 words
A static reducing mat in accordance with claim 2 wherein said conducting layer resides within said partially conductive layer.
Claim 10
Dependent Claim
21 words
A transparent static-reducing mat in accordance with claim 1 wherein said conducting layer comprises a web of randomly disposed conducting fibers.
Claim 11
Dependent Claim
36 words
A transparent static-reducing mat in accordance with claim 9 wherein the diameter of said fibers is within the range of 0.5 to 2 mils and the fiber lengths are within the range 0.25 to 1.5 inches.
Claim 12
Dependent Claim
20 words
A transparent static reducing mat in accordance with claim 1 wherein said conducting layer comprises a rectangular grid of fibers.
Claim 13
Dependent Claim
77 words
A method of making the transparent static-reducing mat of claim 1 which method includes the steps of, providing a hot extrudate of plastic insulating material to form a base extrudate having a top surface and a bottom surface, placing said essentially invisible conducting fibers on said top surface while said extrudate is hot to form a fibered hot extrudate, and applying pressure between the top and bottom surface of the fibered extrudate and cooling the fibered extrudate.
Claim 14
Dependent Claim
37 words
A static reducing mat in accordance with claim 1 wherein said plurality of thin conducting essentially invisible fibers are randomly oriented in said layer in directions both generally parallel to and generally perpendicular to said top surface.
Claim 15
Dependent Claim
36 words
A transparent static-reducing mat in accordance with claim 13 wherein the diameter of said fibers is within the range of 0.5 to 2 mils and the fibers lengths are within the range 0.25 to 1.5 inches.
Claim 16
Dependent Claim
39 words
A transparent static-reducing mat in accordance with claim 1 wherein said thin conducting essentially invisible electrically interconnected fibers are microscopically fine electrostatically conductive fibers chemically bonded to the surface of said transparent base in a partially conductive polymeric matrix.
Claim 17
Dependent Claim
37 words
A transparent static-reducing mat in accordance with claim 15 wherein the diameter of said fibers is within the range of 0.5 to 2 mils and the fiber lengths are within the range of 0.25 to 1.5 inches.
References Cited (Backward Citations)
US4307144A
Cited
US4472471A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-19 | 1989-11-18 | 1990-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-19 | 1993-11-18 | 1994-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-19 | 1997-11-18 | 1998-05-20 | $7700.00 | Window Closed / Lapsed |