US2302003A - Static discharging floor covering - Google Patents

Static discharging floor covering Download PDF

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Publication number
US2302003A
US2302003A US349740A US34974040A US2302003A US 2302003 A US2302003 A US 2302003A US 349740 A US349740 A US 349740A US 34974040 A US34974040 A US 34974040A US 2302003 A US2302003 A US 2302003A
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United States
Prior art keywords
rug
static
electrically conducting
conducting
under
Prior art date
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Expired - Lifetime
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US349740A
Inventor
Elizabeth N Cadwell
Marick Louis
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Uniroyal Inc
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United States Rubber Co
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Publication date
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Priority to US349740A priority Critical patent/US2302003A/en
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/51Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof
    • D06M11/52Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with selenium, tellurium, polonium or their compounds; with sulfur, dithionites or compounds containing sulfur and halogens, with or without oxygen; by sulfohalogenation with chlorosulfonic acid; by sulfohalogenation with a mixture of sulfur dioxide and free halogens
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/73Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof
    • D06M11/74Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon or graphite; with carbides; with graphitic acids or their salts
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N7/00Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
    • D06N7/0005Floor covering on textile basis comprising a fibrous substrate being coated with at least one layer of a polymer on the top surface
    • D06N7/0039Floor covering on textile basis comprising a fibrous substrate being coated with at least one layer of a polymer on the top surface characterised by the physical or chemical aspects of the layers
    • D06N7/0042Conductive or insulating layers; Antistatic layers; Flame-proof layers
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05FSTATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
    • H05F3/00Carrying-off electrostatic charges
    • H05F3/02Carrying-off electrostatic charges by means of earthing connections
    • H05F3/025Floors or floor coverings specially adapted for discharging static charges
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00Stock material or miscellaneous articles
    • Y10S428/922Static electricity metal bleed-off metallic stock
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S524/00Synthetic resins or natural rubbers -- part of the class 520 series
    • Y10S524/925Natural rubber compositions having nonreactive materials, i.e. NRM, other than: carbon, silicon dioxide, glass titanium dioxide, water, hydrocarbon or halohydrocarbon
    • Y10S524/926Natural rubber compositions having nonreactive materials, i.e. NRM, other than: carbon, silicon dioxide, glass titanium dioxide, water, hydrocarbon or halohydrocarbon with water as NRM, exemplified
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S57/00Textiles: spinning, twisting, and twining
    • Y10S57/901Antistatic
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/23907Pile or nap type surface or component
    • Y10T428/23993Composition of pile or adhesive

Description

Nov. 17, 1942. E. N. CADWELL ETAL. 2,302,003

STATIC DISGHARGING FLOOR COVERING Filed Aug. 2, 1940 INVENTORS ATTO NEY' Patented Nov. 17, 1942 STATIC DISCHARGING FLOOR COVERING Elizabeth N. Cadwell, Grosse Pointe City, and

Louis Marick, Grosse Pointe Farms, Micla, assignors to United States Rubber Company, New York, N. Y., a corporation of New Jersey Application August 2, 1940, Serial No. 349,740

3 Claims.

This invention relates to fabric floor coverings, such as rugs, carpeting, and the like and, in particular, it relates to fabric floor coverings having means incorporated therein for the purpose of preventing or removing an accumulation of static electricity in a body contacting the covering when moving across it.

It is well recognized that as a person walks on a rug there is likelihood of a resulting accumulation of static electricity in or on the body and that this accumulation of electricity is discharged when the person touches an electrically conducting body. In some cases the amount of static generated reaches such proportions as to be definitely objectionable. In any event, this static generating condition is always a source of annoyance, and its effect on different people varies in accordance with the temperament of the particular individual. Static generated from rugs is usually increased as the relative humidity is decreased, thus accounting for the more noticeable effect of static during the winter months.

In the practice of our invention we provide a fabric fioor covering illustrated as a rug, having electrically conducting elements extending from the top to the under side of the rug, in combination with electrically conducting means located at the under side of the rug for the purpose of dissipating a static charge.

Among the objects of our invention are to provide a rug having static dissipating characteristics for the purpose of eliminating the annoyance of static shock; to provide in a rug an electrically conducting means which is resilient, and which does not detract from the appearance of the rug; and to provide conducting means which may be incorporated with rugs efliciently and economically. Other objects and advantages will appear more obvious in the following detailed description considered in connection with the accompanying drawing, in which:

Fig. 1 is a perspective view of a portion of a rug embodying features of our invention;

Fig. 2 is an enlarged end view of a portion of the rug shown in Fig. 1;

Fig. 3 is a similar view of a modified rug; and

Fig. 4 is a similar view of a further modified rug.

Referring to the drawing and, in particular, to

v Fig. 1, we show a rug l of conventional type,

consisting essentially of a woven backing 2 from which a pile or nap 3 extends. To provide an electrically conducting medium extending from at least occasional points at the top surface of the rug to a point located at the under side of the backing 2, we provide a cord, yarn or thread 4, treated to make it electrically conducting, in the rug. The cord 4, which may be formed of cotton or other material, is threaded through the rug and along the under side of the backing 2 and again upward to the top surface of the nap or pile 3. The ends of the treated cord I preferably terminate at the top surface of the rug as formed by the nap 3. The spacing of these cords is indicated in Fig. 1, and the exposed ends are preferably about two inches apart, although good results have been obtained by spacing the cord ends four or more inches apart.

After the cords I are drawn through the thickness of the rug, the under side of the rug is treated to render it electrically conducting. For this purpose a coating 5 of a rubber composition containing electrically conducting carbon black is applied to the under side of the backing 2.

As an example of a material for rendering the cords 4 and the under side of the backing 2 electrically conducting, we prepare a solution of a rubber composition containing the following ingredients:

Rubber 100 Zinc oxide- 15 Antioxidant .35 Accelerator 2 Deodorant .1 Stearic acid... 'I Sulfur .75

Parts by weight latex 166.67 Dispersing agent 4.25 Activator 2.5 Accelerator 0.75 Casein 10.0 Ammonia 0.9 Sulfur 2.5 Acetylene carbon black 85.0 Water 2,033

The sulphur, activator, accelerator, and dispersing agent are mixed together with water and added to the latex containing a dispersing agent. The remaining ingredients, mixed separately, are added to this solution and water is added to reduce the solution to a proper consistency. Coatings of this conducting solution may be applied to the yarns, cords, or sheeting material by operations such as dipping, painting, or spraying.

As the cords 4 are exposed at the under side of thebacking 2, they engage with the layer conducting rubber B on the backing 2 and an electrical connection is formed therebetween. By this arrangement static electricity which is generated on or in a body passing over the top of the rug, which body forms a contact with one or more of the cords 4, through the treated cords 4 and becomes dissipated in the layer of conducting rubber I. The cords 4 do not of themselves dissipate a static charge unless they engage with the conducting medium 5 underlying the rug and having a capacity suiliciently great to absorb the electrical charge. The layer of conducting rubber composition I functions as a condenser and has a sufliciently great capacity to receive and then dissipate accumulation of static by leakage. By spacing the conducting elements or cords 4 throughout the area of the rug, the static is not only discharged from a body contacting the rug, but no substantial accumulation of static is possible because of the frequent placement of the conducting elements which pass through the rug.

It is to be understood that beneficial eifects may be obtained by treating portions, such as edges, of the rug in case it is not desired to treat the entire exposed surface of the rug. It is also to be understood that the rug may be electrically grounded by electrically contacting with any conducting body. Also, the rug may be mounted on 8. padding, or the like, so long as there is a conducting layer 5 in contact with the threads 4.

In Fig. 3 there is illustrated a modification of the rug in which single threads l are threaded through the rug and provided at their lower ends with knots 1, which engage with the conducting layer 5.

In Fig. 4 there is illustrated a further modification of the invention in which certain tufts l of the fabric itself have been treated to render them electrically conducting. These tufts engage the backing 5.

. Tests have demonstrated that with a rug in which one-half was treated in accordance with the present invention and the other half remained in its conventional state, sparks as long as one-half inch could be produced when the individual walked over the untreated portion of the rug and touched a metal object, while no evidence of a static discharge was apparent when the same individual walked over the treated portion of the rug and touched a similar metal object.

While in the present application reference is made to a rug, it is intended to use the word rug in its broad sense to include carpets, carpeting, mats, sheet material, or other types of floor coverings formed essentially of textiles or a vegetable, animal, or synthetic origin.

As thus shown and described, it is believed apparent that we have provided a unique and efficient means for discharging accumulation of static, and while we have shown preferred embodiments of our invention, it is to be understood that it is susceptible of other modifications, as appearing within the scope of the appended claims.

Having thus shown and described our invention, what we claim and desire to protect by Letters Patent is:

l. A rug, a coating of a flexible electrically conducting material adhered to at leut a portion of the under side of the rug, and a plurality of electrically conducting elements comprising textile material and an electrically conductive rubber composition contacting said coating and extending to substantially the top of the rug.

2. A rug having a plurality of electrically conducting elements of rubber composition extending from the top to the under side of the rug and a layer of electrically conducting rubber composition engaging the under side of the rug and the elements and serving to dissipate static electricity adjacent the rug.

3. A rug having a plurality of electrically conducting elements comprising spaced textile units extending from the top to the under side of the rug and a layer of electrically conducting composition engaging the under side of the rug and the elements and serving to dissipate static electricity adjacent the rug. I

ELIZABETH N. CADWELL. LOUIS MARICK.

US349740A 1940-08-02 1940-08-02 Static discharging floor covering Expired - Lifetime US2302003A (en)

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Cited By (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426315A (en) * 1943-09-25 1947-08-26 Us Rubber Co Static free brush
US2457299A (en) * 1944-01-11 1948-12-28 Armstrong Cork Co Surface covered structure and surface covering therefor
US2466311A (en) * 1947-02-03 1949-04-05 Wayne C Hall Apparatus for preventing radio interference
US2536818A (en) * 1945-10-26 1951-01-02 Gen Electric Device for reducing radio noise produced by the discharge of electrostatic accumulations
US2631189A (en) * 1950-01-27 1953-03-10 Dayton Aircraft Prod Inc Static wick discharger
US2714181A (en) * 1952-07-14 1955-07-26 Shok Pruf Manufacturers And Di Static electricity eliminator for motor vehicle seats
US2735813A (en) * 1956-02-21 Liner material for leaf spring
US2802148A (en) * 1953-04-17 1957-08-06 Waldo E Nutter Automobile seat cover having electrical grounding properties and grounding tape
US2814301A (en) * 1953-07-01 1957-11-26 Joseph H Schmitz Artificial hair pieces and methods of making the same
US2822509A (en) * 1953-05-06 1958-02-04 David R M Harvey Adhesive plaster
US2845962A (en) * 1953-07-14 1958-08-05 Dunlop Rubber Co Antistatic fabrics
US2929108A (en) * 1957-12-19 1960-03-22 Arthur G Sands Method for preparing conductive latex films
US3001264A (en) * 1959-05-11 1961-09-26 Bloch Godfrey Pile fabric
US3035955A (en) * 1959-11-02 1962-05-22 Congoleum Nairn Inc Surface covering product
US3063128A (en) * 1959-04-09 1962-11-13 West Point Mfg Co Process for controlling static properties of synthetic textile fibers
US3099774A (en) * 1960-01-08 1963-07-30 John J Crane Static discharge device
US3196315A (en) * 1962-08-29 1965-07-20 Thomas F Peterson Carpet underlay
US3281624A (en) * 1963-07-22 1966-10-25 Stephen I Patchen Electrically conductive elastomeric composite
US3510386A (en) * 1966-06-23 1970-05-05 Gaf Corp Antistatic carpet structure
US3699590A (en) * 1972-01-24 1972-10-24 Brunswick Corp Antistatic garment
US3713960A (en) * 1968-10-04 1973-01-30 W Cochran Antistatic tufted product
JPS4816177U (en) * 1971-07-01 1973-02-23
DE2337103A1 (en) * 1972-07-21 1974-02-14 Du Pont Antistatic synthetic thread
DE2351941A1 (en) * 1972-10-16 1974-04-25 Du Pont Backing and methods of making the same
US3861429A (en) * 1970-06-24 1975-01-21 Burlington Industries Inc Method and apparatus for eliminating static charges in pile fabric
US3953913A (en) * 1973-11-21 1976-05-04 Brunswick Corporation Velvet fabric
US3987613A (en) * 1965-07-29 1976-10-26 Burlington Industries, Inc. Process for preparing textiles without static charge accumulation and resulting product
FR2315557A1 (en) * 1975-06-24 1977-01-21 Smith Ass Carpet Peter Material for carpets
US4010004A (en) * 1974-06-26 1977-03-01 Brunswick Corporation Velvet fabric
DE2838881A1 (en) * 1977-09-06 1979-03-22 Standard Oil Co sekundaergrundgewebe conductive and thus made tufted carpets
US4153749A (en) * 1975-11-20 1979-05-08 United Technical Products, Inc. Carpeting
US4208696A (en) * 1977-09-06 1980-06-17 Minnesota Mining And Manufacturing Company Electrically conductive web
US4308304A (en) * 1968-10-04 1981-12-29 Cochran Ii William H Antistatic tufted product
US4399337A (en) * 1980-11-03 1983-08-16 Schlegal Corporation Transmission selector rod seal
US4415946A (en) * 1982-02-08 1983-11-15 Dennison Manufacturing Company Antistatic chairmat
US4513347A (en) * 1983-07-28 1985-04-23 Herman Miller, Inc. Static protective chair
DE3442695A1 (en) * 1984-11-23 1986-06-05 Beiersdorf Ag Duct tape
US4661689A (en) * 1985-10-28 1987-04-28 Collins & Aikman Corporation Electrical heating pad with antistatic surface
US4725717A (en) * 1985-10-28 1988-02-16 Collins & Aikman Corporation Impact-resistant electrical heating pad with antistatic upper and lower surfaces
DE3631165A1 (en) * 1986-09-12 1988-03-24 Dura Tufting Gmbh Tufted, woven or knitted surface cladding and process for its manufacture
US4754364A (en) * 1985-10-04 1988-06-28 Steelcase Inc. Static dissipative chair
US4773122A (en) * 1986-10-03 1988-09-27 Herman Miller, Inc. Conductive caster
US4806410A (en) * 1986-09-18 1989-02-21 Ranpak Corp. Processes for the production of antistatic or static dissipative paper, and the paper products thus produced, and apparatus utilized
US5160775A (en) * 1990-06-17 1992-11-03 Daiwa Company, Ltd. Antistatic mat
US20080246296A1 (en) * 2007-04-03 2008-10-09 Gm Global Technology Operations, Inc. Static-Reducing Vehicle Seat

Cited By (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735813A (en) * 1956-02-21 Liner material for leaf spring
US2426315A (en) * 1943-09-25 1947-08-26 Us Rubber Co Static free brush
US2457299A (en) * 1944-01-11 1948-12-28 Armstrong Cork Co Surface covered structure and surface covering therefor
US2536818A (en) * 1945-10-26 1951-01-02 Gen Electric Device for reducing radio noise produced by the discharge of electrostatic accumulations
US2466311A (en) * 1947-02-03 1949-04-05 Wayne C Hall Apparatus for preventing radio interference
US2631189A (en) * 1950-01-27 1953-03-10 Dayton Aircraft Prod Inc Static wick discharger
US2714181A (en) * 1952-07-14 1955-07-26 Shok Pruf Manufacturers And Di Static electricity eliminator for motor vehicle seats
US2802148A (en) * 1953-04-17 1957-08-06 Waldo E Nutter Automobile seat cover having electrical grounding properties and grounding tape
US2822509A (en) * 1953-05-06 1958-02-04 David R M Harvey Adhesive plaster
US2814301A (en) * 1953-07-01 1957-11-26 Joseph H Schmitz Artificial hair pieces and methods of making the same
US2845962A (en) * 1953-07-14 1958-08-05 Dunlop Rubber Co Antistatic fabrics
US2929108A (en) * 1957-12-19 1960-03-22 Arthur G Sands Method for preparing conductive latex films
US3063128A (en) * 1959-04-09 1962-11-13 West Point Mfg Co Process for controlling static properties of synthetic textile fibers
US3001264A (en) * 1959-05-11 1961-09-26 Bloch Godfrey Pile fabric
US3035955A (en) * 1959-11-02 1962-05-22 Congoleum Nairn Inc Surface covering product
US3099774A (en) * 1960-01-08 1963-07-30 John J Crane Static discharge device
US3196315A (en) * 1962-08-29 1965-07-20 Thomas F Peterson Carpet underlay
US3281624A (en) * 1963-07-22 1966-10-25 Stephen I Patchen Electrically conductive elastomeric composite
US3987613A (en) * 1965-07-29 1976-10-26 Burlington Industries, Inc. Process for preparing textiles without static charge accumulation and resulting product
US3510386A (en) * 1966-06-23 1970-05-05 Gaf Corp Antistatic carpet structure
US4308304A (en) * 1968-10-04 1981-12-29 Cochran Ii William H Antistatic tufted product
US3713960A (en) * 1968-10-04 1973-01-30 W Cochran Antistatic tufted product
US3861429A (en) * 1970-06-24 1975-01-21 Burlington Industries Inc Method and apparatus for eliminating static charges in pile fabric
JPS4816177U (en) * 1971-07-01 1973-02-23
JPS5127326Y2 (en) * 1971-07-01 1976-07-10
US3699590A (en) * 1972-01-24 1972-10-24 Brunswick Corp Antistatic garment
DE2337103A1 (en) * 1972-07-21 1974-02-14 Du Pont Antistatic synthetic thread
DE2351941A1 (en) * 1972-10-16 1974-04-25 Du Pont Backing and methods of making the same
US3953913A (en) * 1973-11-21 1976-05-04 Brunswick Corporation Velvet fabric
US4010004A (en) * 1974-06-26 1977-03-01 Brunswick Corporation Velvet fabric
FR2315557A1 (en) * 1975-06-24 1977-01-21 Smith Ass Carpet Peter Material for carpets
US4153749A (en) * 1975-11-20 1979-05-08 United Technical Products, Inc. Carpeting
DE2838881A1 (en) * 1977-09-06 1979-03-22 Standard Oil Co sekundaergrundgewebe conductive and thus made tufted carpets
FR2401769A1 (en) * 1977-09-06 1979-03-30 Standard Oil Co conductive secondary backing layers and carpet velvety provided such layers
US4208696A (en) * 1977-09-06 1980-06-17 Minnesota Mining And Manufacturing Company Electrically conductive web
US4399337A (en) * 1980-11-03 1983-08-16 Schlegal Corporation Transmission selector rod seal
US4415946A (en) * 1982-02-08 1983-11-15 Dennison Manufacturing Company Antistatic chairmat
US4513347A (en) * 1983-07-28 1985-04-23 Herman Miller, Inc. Static protective chair
DE3442695A1 (en) * 1984-11-23 1986-06-05 Beiersdorf Ag Duct tape
US4754364A (en) * 1985-10-04 1988-06-28 Steelcase Inc. Static dissipative chair
US4661689A (en) * 1985-10-28 1987-04-28 Collins & Aikman Corporation Electrical heating pad with antistatic surface
US4725717A (en) * 1985-10-28 1988-02-16 Collins & Aikman Corporation Impact-resistant electrical heating pad with antistatic upper and lower surfaces
DE3631165A1 (en) * 1986-09-12 1988-03-24 Dura Tufting Gmbh Tufted, woven or knitted surface cladding and process for its manufacture
US4806410A (en) * 1986-09-18 1989-02-21 Ranpak Corp. Processes for the production of antistatic or static dissipative paper, and the paper products thus produced, and apparatus utilized
US4773122A (en) * 1986-10-03 1988-09-27 Herman Miller, Inc. Conductive caster
US5160775A (en) * 1990-06-17 1992-11-03 Daiwa Company, Ltd. Antistatic mat
US20080246296A1 (en) * 2007-04-03 2008-10-09 Gm Global Technology Operations, Inc. Static-Reducing Vehicle Seat

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