US3832598A - Electrically conductive tape device - Google Patents

Electrically conductive tape device Download PDF

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Publication number
US3832598A
US3832598A US00294075A US29407572A US3832598A US 3832598 A US3832598 A US 3832598A US 00294075 A US00294075 A US 00294075A US 29407572 A US29407572 A US 29407572A US 3832598 A US3832598 A US 3832598A
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United States
Prior art keywords
conductive
strip
sensitive adhesive
pressure
flexible
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Expired - Lifetime
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US00294075A
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English (en)
Inventor
R Oehmke
P Schertler
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3M Co
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Minnesota Mining and Manufacturing Co
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Publication date
Application filed by Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Priority to US00294075A priority Critical patent/US3832598A/en
Priority to CA180,482A priority patent/CA986982A/en
Priority to IT29547/73A priority patent/IT993940B/it
Priority to GB4579373A priority patent/GB1453958A/en
Priority to IT52852/73A priority patent/IT994356B/it
Priority to DE19732349809 priority patent/DE2349809A1/de
Priority to JP48110399A priority patent/JPS4971493A/ja
Priority to FR7334983A priority patent/FR2201609B1/fr
Application granted granted Critical
Publication of US3832598A publication Critical patent/US3832598A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00—Footwear with health or hygienic arrangements
    • A43B7/36—Footwear with health or hygienic arrangements with earthing or grounding means

Definitions

  • the strip device comprises a flexible, skid resistant, conductive strip having at one end a footwearsole-engaging portion provided with pressure sensitive adhesive for attachment to the personnels footwear and means at the other end for temporary electrically conductive attachment to the body of the personnel.
  • this invention relates to flexible electrically conductive strip devices. In yet another aspect, this invention relates to shoes suitable for dissipating static electricity from the body of personnel.
  • the ground can be any electrically conductive mass of material such as a metal pipe which is in intimate contact with the earth and will provide a means of dissipating the static charge.
  • the workers use slippers, overshoes, gloves, disposable booties and other clothing which is electrically conductive and has one end of a flexible conductive strap attached to the clothing by stitching, solvent adhesives, or other means of making a coherent electrical contact.
  • the other end of the electrically conductive strap is wrapped about the ankles, tucked into the socks, or otherwise attached to the personnel to provide a conductive path from the body of the personnel to the ground.
  • the electrically conductive strip made in accordance with this invention provides a conveniently used, easily applied, disposable means for adapting shoes, slippers, overshoes, booties and the like into skid resistant, electrically conductive grounded clothing.
  • the strip of this invention is a flexible, disposable, electrically conductive strip comprising a elongated flexible, skid resistant, electrically conductive material having a footwear-sole-engaging portion at one end thereof provided with a pressure sensitive adhesive over at least a portion thereof and a body contacting portion distally to said footwear engaging portion adapted for temporary attachment to the leg adjacent to said footwear in electrical contact with the skin of the wearer and in non-interfering relationship as re gards locomotion.
  • FIG. 1 is'a side view in section of one embodiment of the flexible conductive strip of this invention
  • FIG. 2 is a side view in section of another embodiment of this invention having an electrically conductive adhesive on one end thereof;
  • FIG. 3 is a side view in elevation illustrating the strip device of FIG. 2 attached to a shoe.
  • FIG. 4 is a perspective view of a jumbo roll of mate rial suitable for being converted to the strips of FIG. 2.
  • FIG. 2 Another embodiment of the invention, as shown in FIG. 2, has a strip of conductive material 11 having on one end thereof a pressure sensitive adhesive 12 covered by release liner 13 similar to the configuration shown in FIG. 1.
  • the electrical strip device 16 has on the opposite end of conductive material 11 a coating of pressure sensitive adhesive 17, covered by release liner 18, which is electrically conductive, adhesive 17 covering the width of the material for about 2 to 5 centimeters.
  • Adhesive 17 being conductive provides a means for attaching the conductive strip to the body of the wearer providing a firm, electrically conductive connection between the body of the wearer and the flexible conductive strip 11.
  • the release liners l3, 18 are removed and the pressure sensitive adhesive 12 applied to the sole of a shoe 19 or other footwear as shown in FIG. 3.
  • the resulting configuration has a substantial portion of the electrically conductive v strip 11 in contact with the ground, forming grounding means, and the remainder of the strip can be brought into electrical contact with the ankle 21 by means of the pressure-sensitive adhesive 17.
  • the conductive material 11 is produced in the form of an elongated sheet which has a pressure-sensitive adhesive 12 and a release liner 13 along one edge of the elongated sheet.
  • the embodiment in FlG. 4 has a strip of conductive adhesive 17 protected by a release liner 18.
  • the conductive adhesive could be omitted and a conductive strip similar to FIG. 1 formed.
  • the flexible, electrically conductive material useful in the strip device of this invention may be prepared from numerous flexible, electrically conductive compositions.
  • Suitable conductive compositions include rubbery polymeric materials containing an electrically conductive powder that can be blended to a uniform composition andextruded, calendered or otherwise formed into sheets of a thickness of about 0. 1-1 .25 millimeters.
  • the polymeric composition may be impregnated, such as by pressure lamination to a textile fabric, to provide greater dimensional stability to the sheeted composition.
  • Suitable polymeric materials for use in the electrically conductive strip of this invention include natural and reclaimed rubber, butyl rubber, polyisoprene, cisbutadiene, styrene-butadiene rubbers, ethylenepropylene-polyene terpolymer rubbers commonly known as EPDM" rubbers, polymers and copolymers of chloroprene, polyacrylates, polyvinyl alkyl ethers, and the like.
  • EPDM ethylenepropylene-polyene terpolymer rubbers commonly known as EPDM” rubbers
  • the elastomeric polyurethanes and polyureas provide still other known elastomers that are useful in the practice of this invention.
  • the preferred source of polymeric material for use in the flexible electrically conductive strip of this invention is scrap and recovered vulcanized elastomeric material resulting from the molding and forming of automobile tire products. Particularly preferred is the rubber scrap generated during the skiving and retreading of automobile tires.
  • the vulcanized scrap and recovered elastomeric materi' als are comminuted by cutting or grinding, blended with a thermoplastic binder containing an electrically conductive powder and formed into sheets by calendering or other means known in the art.
  • thermoplastic binders which may be used in the practice of this invention include the natural and synthetic elastomers capable of being vulcanized that are mentioned hereinbefore and thermoplastic polymers such as polyvinyl halides, e.g. polyvinyl chloride and plasticized polyvinyl chloride; copolymers of vinly chloride and vinly acetate; vinylidene chloride polymers and copolymers of vinyl chloride, vinyl acetate, acrylonitrile; styrene polymers and copolymers as for example, styrene copolymers with ethylene, butylene, butadiene, methylacrylate, and the like; polyolefins, e.g., polyethylene and polypropylene; and halogenated polyolefins, e.g.
  • polyvinyl halides e.g. polyvinyl chloride and plasticized polyvinyl chloride
  • copolymers of vinly chloride and vinly acetate vinyli
  • binders are the copolymers of ethylene and copolymerizable olefinically unsaturated monomers such as described in U.S. Pat. No. 3,489,710 and the ABA block polymers such as described in U.S. Pat. No. 3,231,635.
  • the amount of particulate elastomer used in the conductive composition of this invention can vary from about 0.5-9 parts by weight of elastomer per part of thermoplastic binder with a preferred composition being about 3 to 6 parts by weight of particulate elastomer per part of thermoplastic binder.
  • Suitable electrically conductive powder for use in the flexible electrically conductive material includes finely divided electrically conductive metals, e.g., silver, gold, aluminum, copper or zinc and conductive forms of carbon, e.g. graphite and gamma-carbon black.
  • the average particle size of the conductive powder and the amount used in the conductive material will vary with the conductive material used. For example, where nickel particles are used it is preferred that the conductive powder have an average particle size of about 2-4 microns and that the nickel particles be present in the composition from about 1 to 25 percent by volume. Where a conductive carbon black is used, it is preferred that the average particle size be from 2080 millimicrons and be present in amounts from about 1 to 50 percent by volume.
  • the conductive composition may contain additives such as fillers, e.g. silica, clay, talc; antioxidants; vulcanizing agents, e.g. sulfur, peroxides; dyes; pigments, e.g. zinc oxide, titanium oxide; plasticizers and lubricants.
  • fillers e.g. silica, clay, talc
  • antioxidants e.g. antioxidants
  • vulcanizing agents e.g. sulfur, peroxides
  • dyes e.g. zinc oxide, titanium oxide
  • plasticizers and lubricants e.g. zinc oxide, titanium oxide
  • the pressure sensitive adhesive suitable for use for attaching the conductive tape device of this invention to shoes or other articles of clothing may be any pressure sensitive adhesive having a peel adhesion of at least 0.14 kilograms pre centimeter width as determined by ASTM Dl000-6 1.
  • suitable pressure sensitive adhesives include adhesives composed of rubbery polymeric material such as those polymeric materials mentioned hereinbefore for use in the electrically conductive composition.
  • the polymeric materials are modified according to the procedures well known in the adhesive art by the addition of plasticizers, tackifiers, fillers, solvents and stabilizers.
  • Preferred pressure sensitive adhesives are the copolymers of alkyl acrylates and acrylic or methacrylic acid, the copolymers of alkylacrylates and maleic anhydride and the copolymers of alkyl acrylates and acrylimide. Of these copolymers the most preferred pressure sensitive adhesive is the copolymer of isooctylacrylate and acrylic acid because of its availability and ease of handling.
  • the electrically conductive pressure-sensitive adhesive useful in one embodiment of this invention may be formed from the pressure sensitive adhesives hereinbefore mentioned to which has been added one of the aforementioned conductive powders.
  • the presently preferred electrically conductive pressure sensitive adhesive is a composition composed of a soft, highly conformable adhesive, a plurality of insoluble soft spherical domains, and a conductive powder such as those described in copending patent application Serial No. l73,857 filed Aug. 23, i971.
  • the electrically conductive strip of this invention can be manufactured by blending the desired rubbery polymeric material, conductive powder and additives on a rubber mill to form a flexible electrically conductive composition. Generally, mixing times from about 3 to 30 minutes or longer are sufficient to thoroughly mix the ingredients with the shorter times being preferred since electrical resistivity increases after optimum mixing with increased mixing times. The resulting composition is then calendered, extruded or otherwise molded to form a sheet of flexible electrically conductive material having a thickness of about 0.1 to 1.25 millimeters which can be cut into widths of 30 to 75 centimeters and wound onto a large roll.
  • particulate elastomeric material such as reclaimed rubber particles
  • a pressure-sensitive adhesive is applied to the sheet of flexible conductive material by techniques known in the art, such as solvent-casting the pressure-sensitive adhesive along a portion of one side of the sheet material. When solvent-casting of this adhesive is used, the solvent is removed and a strip of release liner applied over the pressure-sensitive adhesive to protect the adhesive, and the sheet material may be rewound for convenient storage.
  • the pressure-sensitive'adhesive can be applied by laminating a transfer adhesive and release liner to a portion of one side of the conductive sheet material.
  • an electrically conductive pressure sensitive adhesive can be applied to the other side of the sheet material in a manner similar to and simultaneously with the pressure sensitive adhesive designed to attach the electrically conductive strip to the shoes of the personnel to be protected.
  • the flexible conductive strip devices can be obtained from the sheet of material by use of a guillotine cutter or similar device forcutting strips perpendicular to the width of a large sheet of material or roll of material which is being unwound.
  • a guillotine cutter or similar device forcutting strips perpendicular to the width of a large sheet of material or roll of material which is being unwound.
  • the conductive material is formed into a long sheet and pressure-sensitive adhesive is applied along one edge. The material can then be cut into strips having a pressure-sensitive adhesive on a portion of the strip suitable for attaching to a shoe or the like.
  • thermoplastic binder was formed by mixing parts of styrene-butadiene-styrene. block copolymer wherein the styrene blocks have a molecular weight of about 14,000 and the butadiene block has a molecular weight of about 80,000 on a rubber mill at l25-l 50C. for about 20 minutes. Fifteen parts of ground rubber particles, (obtained from an automobile tire recap operation), having a particle size such that substantially all the pieces passed through a US. Sieve No. 30 was blended into the thermoplastic mixture for 20 minutes. The composition was sheeted from the mill and pressed at 150C. in a hydraulic press having heated platens to form a sheet 0.75 mm. thick.
  • the surface resistance of the resulting sheet when measured by a Simpson volt-ohm meter with razor blade electrodes was 4,000-7,000 ohms per square. Physical properties of the material were an ultimate tensile strength of 665 pounds per square inch and an elongation at break of 290 percent.
  • the flexible electrically conductive sheet material was cut into strips 1.5 cm. in width by 60 cm. in length and one end of the strips was knife coated on one side with a thin layer of an acrylic pressure sensitive adhesive comprising a 20 percent solution of a isooctylacrylate: 5 acrylic acid copolymer in isopropanol and heptane for a distance of about 5 cm. and the adhesive allowed to dry.
  • the adhesive was protected by covering with a piece of silicone treated release liner to provide a conductive tape device similar to the configuration shown in FIG. 1.
  • the conductive strip device of this invention could be readily attached to footwear such as shoes, slippers, paper booties and the like by removing the release liner and attaching the conductive strip to the sole of the footwear by means of the adhesive.
  • footwear such as shoes, slippers, paper booties and the like
  • the release liner and attaching the conductive strip to the sole of the footwear by means of the adhesive.
  • EXAMPLE 2 The flexible, electrically conductive composition of Example 1 was mixed in a Banbury mixer until the temperature had risen to C. and then formed into a 1 millimeter thick sheet on a calendering machine. The composition as formed had a surface resistivity of about 1,000,000 ohms per square. Strip devices were formed as in Example 1 from the sheet material of this example and when attached to footwear as in Example 1 dissipated the static electricity from the body of personnel wearing such altered footwear and prevented the buildup of static charges on the body of personnel so protected.
  • thermoplastic binder was formed from 8 parts of styrene-butadiene-styrene block copolymer such as used in Example 1, 24.5 parts of mineral oil and 8.2 grams of conductive carbon balckcommercially available from Cabot Co. under the tradename XC- 72Rmixed on a rubber mill at l25l50C. for 20 minutes.
  • conductive carbon balckcommercially available from Cabot Co. under the tradename XC- 72Rmixed on a rubber mill at l25l50C. for 20 minutes.
  • To the thermoplastic mixture 59.4 parts of ground tire rubber scrap such as that used in Example 1 was mixed and the mixture mixed for 10 minutes. The mixture was sheeted off the mill and pressed between steel plates at 150C. to form a sheet having a thickness of 0.5 mm. Surface resistance of the material was ohms per square. The ultimate'tensile strength of the resulting material was 195 psi and the elongation at break was 100 percent.
  • the sheet material was cut into strips 1 cm. wide and 35 cm. long. On one end of each strip a thin layer of To use the strip device of this invention the release I liners were removed from the pressure sensitive areas and the end of the strip device having the nonconductive adhesive was applied to the sole of the footwear of personnel and the conductive adhesive was applied to the ankle. When used in this manner, electrical charges did not accumulate on the bodies of personnel but were dissipated from the body of the persons wearing such conductive strips.
  • EXAMPLE 4 The flexible electrically conductive composition of Example 1 was compression molded using a hydraulic press having heated platens to form a block of material 60 cm. long by 30 cm. wide by 0.3 mm. thick. Pressure sensitive adhesive was applied to a cm. wide strip along one edge as in Example 1 and a release liner used to cover the adhesive. The sheets were then cut into strip devices 60 cm. long by 2 cm. wide and were useful for dissipation of static electricity when tested using the procedure of Example 1.
  • EXAMPLE 5 A flexible electrically conductive composition was prepared by mixing on a rubber mill 9 parts of smoked natural rubber, 1 part of polybutene oil, and 10 parts of ground tire scrap. After mixing for 30 minutes, 3.5 parts of conductive carbon black was milled in and the material sheeted from the mill and pressed between two steel plates at 150C. to form a sheet 1.0 mm. thick. Surface resistivity, measured as in Example 1, was 5,500-7,500 ohms per square. The ultimate tensile strength was 690 psi, the elongation at break was 225 percent. The conductive sheet composition was cut into strips 30 cm. long by 2 cm. wide and pressure sensitive adhesive applied as in Example 2. The resulting conductive tape was effective to prevent the accumulation of static electricity on the body of personnel wearing such a strip attached to the ankle and to their footwear.
  • a flexible electrically conductive composition was prepared by mixing on a rubber mill 10 parts of an ethylene-ethylacrylate copolymer containing about to percent ethylacrylate, 2 grams of dibutylphthalate and 3.5 parts of conductive carbon black. After mixing for about 15 minutes, 30 grams of finely shredded rubber tire scrap was milled into the mixture and the material sheeted from the mill and pressed between two steel plates at 300C. to form a sheet 1 mm. thick. The surface resistivity of the conductive sheet as measured in Example 1 was 500 ohms per square. The ultimate tensile strength was 500 psi and elongation at break was 50 percent.
  • Conductive strip devices prepared as described in Example 2 were readily attached to footwear and allowed for the dissipation of static electricity from the body of personnel wearing the adapted footwear.
  • EXAMPLE 7 A flexible electrically conductive composition was prepared by mixing on a rubber mill 20 grams of smoked natural rubber, 1.6 grams of coal tar oil, 1 gram zinc oxide, 0.6 grams stearic acid, 0.1 gram of benzothiazyl disulfide and 0.5 grams of sulfur. After mixing for 10 minutes, 6 grams of conductive carbon black were mixed in and the material sheeted from the mill and pressed between two steel plates at 145C. to form and cure a conductive sheet 1.0 mm. thick.
  • Example 1 Surface resistivity measured as in Example 1 was 60-150 ohms per square, and the resulting material had a tensile strength of 3200 psi and an elongation at break of mer, (Kraton" 1107), 4 parts of mineral oil, 45 parts 600 percent.
  • Conductive strip devices prepared as described in Example 2 were readily attached to footwear and allowed for the dissipation of static electricity from the body of personnel wearing the adapted footwear.
  • EXAMPLE 8 The procedure of Example 7 was repeated using styrene-butadiene rubber (SBR-1500 available from Imperial Chemical Industries) in place of the smoked natural rubber.
  • SBR-1500 available from Imperial Chemical Industries
  • the flexible, electrically conductive sheet material had a surface resistivity of 700 to 2100 ohms per square, a tensile strength of 2660 psi and an elongation at break of 750 percent.
  • Conductive strip devices prepared as described in Example 2 were readily attached to footwear and allowed for dissipation of static electricity from the body of personnel wearing the so adapted footwear.
  • EXAMPLE 9 Six parts of styrene-isoprene-styrene block copolyof nickel dust (having particle size of about 3 microns), and 4 parts of ground white wall rubber scrap (particle size less than 1 millimeter) were blended together on a rubber mill at 250F. The components were blended in sequence the total milling taking minutes.
  • the resulting mixture was formed into a 1.25 millimeter thich sheet by pressing between two sheets of silicone treated release paper.
  • the physical properties of the conductive material were resistivity about 2.5 l0 ohms per square, tensile strength 9.8 kilograms per square centimeter and elon gation at break percent.
  • the conductive material produced was suitable for forming conductive strips.
  • Example 10 The milling procedure of Example 9 was repeated substituting 30 parts of silver coated ceramic beads (available as Sil-Clad-Gl00, from Sigmatronics Laboratories Inc.). 1
  • the milled mixture was warm pressed to 0.75 millimeter thick between heated platens at 250F. and 1000 pounds per square inch.
  • the resistivity was about l-2 ohm per square.
  • the tensile strength was 3.2 kilograms per square centimeter, and the elongation at break was percent.
  • a flexible, one-piece elastomeric skid resistant, disposable conductive strip for one-time use for electrically grounding the human body comprising an elongated strip of flexible, electrically conductive elastomeric material having a foot wear-sole-engaging portion at one end thereof provided with pressure-sensitive adhesive having a peel adhesion of at least 0.14 kilograms per centimeter of width over at least a portion thereof and a body-contacting portion distally to said foot-engaging portion adapted for temporary attachment to the leg adjacent to said foot wear in electrical contact with the skin and in noninterfering relationship as regards locomotion.
  • the conductive strip of claim 1 having a conductive pressure-sensitive adhesive on the end distal to the pressure-sensitive adhesive on the footwear-soleengaging portion.

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Non-Insulated Conductors (AREA)
US00294075A 1972-10-02 1972-10-02 Electrically conductive tape device Expired - Lifetime US3832598A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US00294075A US3832598A (en) 1972-10-02 1972-10-02 Electrically conductive tape device
CA180,482A CA986982A (en) 1972-10-02 1973-09-07 Electrically conductive tape device
IT29547/73A IT993940B (it) 1972-10-02 1973-09-28 Dispositivo di trattenuta per coprimozzo
IT52852/73A IT994356B (it) 1972-10-02 1973-10-01 Materiale a nastro elettricamente conduttore particolarmente idoneo a realizzare connessioni di massa per la dissipazione delle cariche statiche
GB4579373A GB1453958A (en) 1972-10-02 1973-10-01 Electrically conductuve tape device
DE19732349809 DE2349809A1 (de) 1972-10-02 1973-10-01 Elektrisch leitendes erdungsband
JP48110399A JPS4971493A (US06826419-20041130-M00005.png) 1972-10-02 1973-10-01
FR7334983A FR2201609B1 (US06826419-20041130-M00005.png) 1972-10-02 1973-10-01

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US00294075A US3832598A (en) 1972-10-02 1972-10-02 Electrically conductive tape device

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US3832598A true US3832598A (en) 1974-08-27

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US00294075A Expired - Lifetime US3832598A (en) 1972-10-02 1972-10-02 Electrically conductive tape device

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US (1) US3832598A (US06826419-20041130-M00005.png)
JP (1) JPS4971493A (US06826419-20041130-M00005.png)
CA (1) CA986982A (US06826419-20041130-M00005.png)
DE (1) DE2349809A1 (US06826419-20041130-M00005.png)
FR (1) FR2201609B1 (US06826419-20041130-M00005.png)
GB (1) GB1453958A (US06826419-20041130-M00005.png)
IT (2) IT993940B (US06826419-20041130-M00005.png)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4249226A (en) * 1979-02-22 1981-02-03 Minnesota Mining And Manufacturing Company Grounding strap
US4543958A (en) * 1979-04-30 1985-10-01 Ndm Corporation Medical electrode assembly
US4584962A (en) * 1979-04-30 1986-04-29 Ndm Corporation Medical electrodes and dispensing conditioner therefor
US4590089A (en) * 1979-04-30 1986-05-20 Ndm Corporation Medical electrodes and dispensing conditioner therefor
US4674511A (en) * 1979-04-30 1987-06-23 American Hospital Supply Corporation Medical electrode
US4749612A (en) * 1984-11-23 1988-06-07 Beiersdorf Aktiengesellschaft Colored Antistatic adhesive tape
US4812948A (en) * 1988-03-15 1989-03-14 Minnesota Mining And Manufacturing Company Shoe grounding strap
US4838273A (en) * 1979-04-30 1989-06-13 Baxter International Inc. Medical electrode
US4889963A (en) * 1987-01-29 1989-12-26 Tokyo Sen-I Kogyo Co., Ltd. Flexible electrically conductive sheet
US5278356A (en) * 1990-06-08 1994-01-11 Miller Terry Q Hold-down tape for electrical cables
US5631079A (en) * 1994-05-06 1997-05-20 Minnesota Mining And Manufacturing Company High temperature resistant antistatic pressure-sensitive adhesive tape
US5914186A (en) * 1994-05-06 1999-06-22 Minnesota Mining And Manufacturing Company High temperature resistant antistatic pressure-sensitive adhesive tape
US20050178496A1 (en) * 2001-02-15 2005-08-18 Integral Technologies, Inc. Low cost electrically conductive tapes and films manufactured from conductive loaded resin-based materials
US20050208251A1 (en) * 2001-02-15 2005-09-22 Integral Technologies, Inc. Low cost electrically conductive tapes and films manufactured from conductive loaded resin-based materials
US7323075B1 (en) 2001-12-03 2008-01-29 Jo Dee's, Inc. Method of contouring fabric using half-hard brass
US20080066948A1 (en) * 2003-09-17 2008-03-20 Rauckman James B Wildlife guard for electrical power distribution and substation facilities
US20080308295A1 (en) * 2007-06-15 2008-12-18 Tsinghua University Conductive tape and method for making the same
US20120078338A1 (en) * 2010-09-28 2012-03-29 David Sheraton Shoe Electrode
CN103340490A (zh) * 2013-06-18 2013-10-09 际华三五三七制鞋有限责任公司 环保型非金属防刺穿防静电一次热硫化胶鞋及其制备方法
AU2019101100B4 (en) * 2019-04-15 2020-06-04 Earthling 3.0 Pty Ltd Personal Earthing Strap

Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
DE2834390C2 (de) * 1978-08-05 1982-06-24 Preh, Elektrofeinmechanische Werke, Jakob Preh, Nachf. Gmbh & Co, 8740 Bad Neustadt Elektrisch leitfähige Kunststoff- Formmasse für einstellbare Widerstände und Verfahren zu deren Herstellung
AT388482B (de) * 1980-12-22 1989-06-26 Semperit Ag Antistatische unterlage
US4586106A (en) * 1984-08-24 1986-04-29 Frazier Thomas G Static dissipative touch device
DE3618948A1 (de) * 1986-06-05 1987-12-10 Electronic Werke Deutschland Kontaktierungsband fuer einen elektrisch leitenden belag
DE102010022729A1 (de) 2010-06-04 2011-12-08 Kroschke Sign-International Gmbh Antistatische Fußbekleidung und System

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US2785344A (en) * 1953-03-09 1957-03-12 William G Hines Grounding device
US2955234A (en) * 1956-02-24 1960-10-04 Russell W Price Conductive tape for shoes
US3075705A (en) * 1959-08-13 1963-01-29 John R Wilhelm Model railroad equipment
US3132204A (en) * 1964-05-05 Electrically conductive pressure sensitive adhesive tapes
US3358188A (en) * 1964-10-16 1967-12-12 Zimmon & Company Inc Rear opening sanitary and protective covering for shoes
US3505144A (en) * 1964-10-08 1970-04-07 Timothy J Kilduff Method of making electrically conductive pressure sensitive adhesive tapes

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Publication number Priority date Publication date Assignee Title
US3132204A (en) * 1964-05-05 Electrically conductive pressure sensitive adhesive tapes
US2785344A (en) * 1953-03-09 1957-03-12 William G Hines Grounding device
US2955234A (en) * 1956-02-24 1960-10-04 Russell W Price Conductive tape for shoes
US3075705A (en) * 1959-08-13 1963-01-29 John R Wilhelm Model railroad equipment
US3505144A (en) * 1964-10-08 1970-04-07 Timothy J Kilduff Method of making electrically conductive pressure sensitive adhesive tapes
US3358188A (en) * 1964-10-16 1967-12-12 Zimmon & Company Inc Rear opening sanitary and protective covering for shoes

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4249226A (en) * 1979-02-22 1981-02-03 Minnesota Mining And Manufacturing Company Grounding strap
US4543958A (en) * 1979-04-30 1985-10-01 Ndm Corporation Medical electrode assembly
US4584962A (en) * 1979-04-30 1986-04-29 Ndm Corporation Medical electrodes and dispensing conditioner therefor
US4590089A (en) * 1979-04-30 1986-05-20 Ndm Corporation Medical electrodes and dispensing conditioner therefor
US4674511A (en) * 1979-04-30 1987-06-23 American Hospital Supply Corporation Medical electrode
US4838273A (en) * 1979-04-30 1989-06-13 Baxter International Inc. Medical electrode
US4749612A (en) * 1984-11-23 1988-06-07 Beiersdorf Aktiengesellschaft Colored Antistatic adhesive tape
US4889963A (en) * 1987-01-29 1989-12-26 Tokyo Sen-I Kogyo Co., Ltd. Flexible electrically conductive sheet
US4812948A (en) * 1988-03-15 1989-03-14 Minnesota Mining And Manufacturing Company Shoe grounding strap
US5278356A (en) * 1990-06-08 1994-01-11 Miller Terry Q Hold-down tape for electrical cables
US5631079A (en) * 1994-05-06 1997-05-20 Minnesota Mining And Manufacturing Company High temperature resistant antistatic pressure-sensitive adhesive tape
US5914186A (en) * 1994-05-06 1999-06-22 Minnesota Mining And Manufacturing Company High temperature resistant antistatic pressure-sensitive adhesive tape
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Also Published As

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FR2201609B1 (US06826419-20041130-M00005.png) 1978-04-14
FR2201609A1 (US06826419-20041130-M00005.png) 1974-04-26
JPS4971493A (US06826419-20041130-M00005.png) 1974-07-10
GB1453958A (en) 1976-10-27
IT993940B (it) 1975-09-30
CA986982A (en) 1976-04-06
DE2349809A1 (de) 1974-04-11
IT994356B (it) 1975-10-20

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