Patent US4885659A successfully refreshed from Google Patents.
US4885659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Static dissipative mat
Assignee: PANDEL Inc A CORP OF
•
Filing: 1987-12-21
•
Granted: 1989-12-05
•
Expires: 2007-12-21
Abstract
Abstract A static dissipative surface covering material which comprises a thermoplastic polymer layer and an electrically conductive, metallized, such as vacuum aluminum-coated, glass fiber tissue material disposed in or to the thermoplastic layer to provide a static dissipative surface covering material. A method of preparing a static dissipative surface covering material, which method comprises embedding within or securing to a thermoplastic polymer layer a layer of electrically-conductive, metallized, coated, open fibrous material, such as an aluminized glass fiber tissue, to provide a static dissipative surface covering material.
Inventors
- 👤 Gilbert S. Nowell
- 👤 Frederick D. Tenzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:24
CPC Classifications
H; H05; H05F; H05F3/00; H05F3/02; H05F3/025; D; D06; D06N; D06N7/00; D06N7/0005; D06N7/0039; D06N7/0042; Y; Y10; Y10T; Y10T428/00; Y10T428/16; Y10T428/163; Y10T428/164; Y10T428/166; Y10T428/31504; Y10T428/31678; Y10T442/00; Y10T442/60; Y10T442/647; Y10T442/652; Y10T442/654; Y10T442/657
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
125 words
A static dissipative, dimensionally stable dissipative surface covering material, such as a floor or table mat, which comprises: (a) a flexible thermoplastic polymer layer of sufficient thickness to act as a floor or table mat and having a face surface and a back surface; (b) a layer of an electrically conductive, vacuum deposited, metallized coated, open, nonwoven, resin bonded, fibrous sheet material bonded to or embedded within the thermoplastic polymer layer to provide a static dissipative surface covering material, and wherein the surface and volume resistance of the surface covering material ranges from about 10 5 to 10 8 ohm or ohm/cm respectively and the said surface covering material lies flat; and (c) an electrical grounding means to connect the fibrous sheet material to ground.
Claim 2
Dependent Claim
125 words
A static dissipative, dimensionally stable dissipative surface covering material, such as a floor or table mat, which comprises: (a) a flexible thermoplastic polymer layer of sufficient thickness to act as a floor or table mat and having a face surface and a back surface; (b) a layer of an electrically conductive, vacuum deposited, metallized coated, open, nonwoven, resin bonded, fibrous sheet material bonded to or embedded within the thermoplastic polymer layer to provide a static dissipative surface covering material, and wherein the surface and volume resistance of the surface covering material ranges from about 10 5 to 10 8 ohm or ohm/cm respectively and the said surface covering material lies flat; and (c) an electrical grounding means to connect the fibrous sheet material to ground.
Claim 3
Dependent Claim
14 words
The material of claim 1 wherein the thermoplastic polymer comprises a vinyl chloride polymer.
Claim 4
Dependent Claim
46 words
The material claim 1 wherein the thermoplastic polymer comprises a first layer, one surface of which forms the face surface and which is composed of a solid thermoplastic polymer and a second layer which forms the back surface and which second layer is a foam layer.
Claim 5
Dependent Claim
21 words
The material of claim 1 wherein the thermoplastic polymer layer includes a static dissipative amount of a static-reducing additive agent therein.
Claim 6
Dependent Claim
16 words
The material of claim 1 wherein the fibrous sheet material comprises a metallized-coated, glass fiber material.
Claim 7
Dependent Claim
22 words
The material of claim 5 wherein the fibrous sheet material comprises a nonwoven, randomly-oriented glass fiber bound together by a resinous material.
Claim 8
Dependent Claim
16 words
The material of claim 1 wherein the metallized coated fibrous sheet material comprises an aluminized coat.
Claim 9
Dependent Claim
31 words
The material of claim 7 wherein the metallized coated fibrous sheet material comprises a monomolecular layer of a vacuum-deposited aluminum coating on one or both sides of the fibrous sheet material.
Claim 10
Dependent Claim
25 words
The material of claim 1 wherein the fibrous sheet material has an open surface area of from about 20% to 50% of the surface area.
Claim 11
Dependent Claim
17 words
The material of claim 1 wherein the fibrous sheet material is embedded within the thermoplastic polymer layer.
Claim 12
Dependent Claim
22 words
The material of claim 1 wherein the fibrous sheet material comprises an open, nonwoven, randomly-oriented, resin-bonded, aluminized-coated, glass fiber tissue sheet material.
Claim 13
Dependent Claim
25 words
The material of claim 14 wherein the tissue sheet material has a point-to-point resistance of about 200 to 1500 ohms for five to fifteen inches.
Claim 14
Dependent Claim
71 words
A static dissipative or static-reducing surface covering material which comprises: (a) a first vinyl chloride polymer layer having a face surface; (b) a second vinyl chloride polymer layer having a back surface; (c) a layer of electrically conductive, vacuum deposited, aluminized-coated, open, nonwoven, resin bonded, glass fiber tissue sheet material disposed between the first and second polymer layers; and (d) a grounding means to connect the aluminized-coated tissue material to ground.
Claim 15
Dependent Claim
71 words
A static dissipative or static-reducing surface covering material which comprises: (a) a first vinyl chloride polymer layer having a face surface; (b) a second vinyl chloride polymer layer having a back surface; (c) a layer of electrically conductive, vacuum deposited, aluminized-coated, open, nonwoven, resin bonded, glass fiber tissue sheet material disposed between the first and second polymer layers; and (d) a grounding means to connect the aluminized-coated tissue material to ground.
Claim 16
Dependent Claim
25 words
The material of claim 13 wherein the first vinyl chloride layer comprises a solid vinyl chloride layer, and the second layer is a foam layer.
Claim 17
Dependent Claim
24 words
The material of claim 1 having a thickness of from about 50 to 300 mils to provide cushioning and shock-absorbing properties to the material.
References Cited (Backward Citations)
NL6506823A
Cited
US4208696A
Cited
US4486490A
Cited
US4312913A
Cited
US4435465A
Cited
US4464432A
Cited
US4478771A
Cited
US4363071A
Cited
US4459334A
Cited
US4472471A
Cited
US4500591A
Cited
US4508776A
Cited
US4657807A
Cited
US4590120A
Cited
US4710415A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-12-04 | 1993-06-05 | 1993-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-04 | 1997-06-05 | 1997-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-04 | 2001-06-05 | 2001-12-05 | $7700.00 | Window Closed / Lapsed |