Electric Patents (Class 256/10)
  • Patent number: 6836213
    Abstract: A taut wire intrusion detection system includes posts that are used to detect an intrusion into a secured area. The supporting posts are used to both detect a movement of the taut wire and anchor the taut wire by using separate anchor and sensor elements. The taut wire system eliminates many of the weaknesses of prior taut wire systems by providing a less variant taut wire sensitivity.
    Type: Grant
    Filed: June 28, 1999
    Date of Patent: December 28, 2004
    Assignee: Safeguards Technology, Inc.
    Inventor: Haim Perry
  • Publication number: 20040195556
    Abstract: A method of connecting an electric fence wire (30) to a post (27) comprises providing a wire connector (10) of the type having a body (11) within which twin bores (15A, 15B) are each associated with wedging means (12A, 12B), together with a non-electrically-conducting filament (19), the filament being looped round the post and having a free end (21) inserted into one of the bores, pushed through and pulled for setting of the proximity of the connector (10) to the post (27), then an end (29) of the electrical fence wire (30) is inserted into the other bore, pushed through and pulled to tension the fence wire and also the filament looped round the post. The filament (19) may extend fixedly from the body (11) of the connector (10) or it may be provided with a small loop (41) through which the free end (21) of the filament is passed after looping round the post (27) and before insertion into the connector.
    Type: Application
    Filed: January 26, 2004
    Publication date: October 7, 2004
    Inventors: Hugh David Facey, Derek Boaler, Anthony David Georges Rhoades
  • Publication number: 20040173786
    Abstract: Webbing for use in fencing includes a plurality of longitudinally extending and substantially vertically aligned high-tensile strength core members including at least one electrically conductive wire. A solid plastic sheath encases each of the core members and a plurality of plastic webs extends between adjacent pairs of core members. The plastic sheath, which encases the electrically conductive wire core member, includes sufficient electrically conductive filler to permit passage of electrical charges from the electrically conductive wire to an outer surface of the sheath. The plastic sheath encasing the electrically conductive wire core member can have a color contrasting with the plurality of plastic webs. The webbing outer surface has a pattern of ridges or grooves arranged to simulate a weathered wood surface.
    Type: Application
    Filed: March 3, 2003
    Publication date: September 9, 2004
    Inventor: Edward S. Robbins
  • Publication number: 20040169171
    Abstract: An electric fence energiser is intended to reduce exposure of an animal tangled in the fence line to high power deterrent pulses for an indefinite period.
    Type: Application
    Filed: March 3, 2004
    Publication date: September 2, 2004
    Inventors: Jack Hartsone Reeves, Richard Lloyd Johnston
  • Publication number: 20040135133
    Abstract: The cantilever and compression strength of a polymer post insulator decreases according to lengthening of lever length of the polymer post insulator. By combining polymer post insulators to construct a structure having an increased strength in an arbitrary direction, a polymer insulator apparatus and a method for mounting the same can provide a sufficient strength and rigidity even as a long insulator for high voltage that requires a long insulation distance. Polymer post insulator columns 12-1, 12-2, in which plural polymer post insulators 1-1 to 1-4 are stacked, are arranged in parallel. The polymer post insulator columns 12-1, 12-2 arranged in parallel are connected with each other via connecting plates 13-1 to 13-3 at each connection site of the polymer post insulators 1-1 to 1-4 constituting the polymer post insulator columns 12-1, 12-2 as well as at the top and bottom of the polymer post insulator columns 12-1, 12-2.
    Type: Application
    Filed: December 22, 2003
    Publication date: July 15, 2004
    Applicant: NGK Insulators, Ltd.
    Inventor: Shuji Fujii
  • Publication number: 20040119058
    Abstract: A protection system including a plurality of wires and a plurality of support members for supporting the plurality of wires. Each support member includes a base and an associated spike positionable in supportive engagement with a ground surface, and an elongate arm releasably connectable to the base and configured for supportably engaging the plurality of wires for supporting the wires relatively parallel and spaced apart to one another above the ground.
    Type: Application
    Filed: December 18, 2002
    Publication date: June 24, 2004
    Inventor: Brett R. Burdick
  • Patent number: 6712339
    Abstract: A modular electric fence panel including a support structure spanning a vertical distance and comprising at least two substantially vertical support members spaced apart from one another by a substantially horizontal support member. Each vertical support member is connectable to a corresponding vertical support member of an adjacent fence panel. The fence panel also includes a plurality of wire-grid conductors spaced apart along the support structure covering a majority of the vertical distance, a wire conductor positioned substantially at the top of the vertical distance, a first negatively charged conductor affixed to the support structure adjacent the ground, and a self-supporting stand for holding the panel upright on the ground. A pair of conductors may be oppositely charged and the wire conductor includes a charge opposite to a charge on one of the charged conductors adjacently positioned below.
    Type: Grant
    Filed: May 15, 2000
    Date of Patent: March 30, 2004
    Assignee: Frederick, L.L.C.
    Inventor: Frederick Smith
  • Publication number: 20030222253
    Abstract: A fence post assembly, as well as a fencing system and related method utilizing the fence post assembly, for forming a temporary enclosure, such as a horse corral for restraining horses. The fence post assembly is provided with an extensible and retractable fence strand, such as polytape or wire, as well as a ground anchor at one end of the post to enable the post to be anchored into the ground. The extendable and retractable fence strand is selectively positionable along the length of the post between the first and second opposite ends thereof. In addition, the fence strand can be electrically conductive to permit the enclosure to be electrified. Provision is made to maintain electrical continuity between fence strands.
    Type: Application
    Filed: January 30, 2003
    Publication date: December 4, 2003
    Inventors: Ronald H. Langlie, James B. Easley, Timothy N. Wilson
  • Patent number: 6646563
    Abstract: A deflection sensor for a taut wire perimeter fence detection system, which can be installed after the fence wire has been installed easily, and the sensor the operates in line with the wire tension. The sensor includes a plate member adapted to be pivotally mounted, a first wire attachment point at one end of said plate member, a second wire attachment point remote from said first wire attachment point and a transducer or sensor element located on said plate member between the attachment points. The taut wire type detection system including at least one taut wire for a perimeter fence supported by a plurality of posts, at least one deflection sensor being pivotally mounted to one of the posts or a support thereon and a sensor processing circuit for interrogating the at least one deflection sensor and to provide an alarm indication on tampering of the at least one taut wire or the at least one deflection sensor.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: November 11, 2003
    Assignee: Gryffin Pty. Ltd.
    Inventors: Nigel James Sinclair Buckley, Gregory Richard Hellard
  • Patent number: 6646551
    Abstract: A taut wire intrusion detection system includes posts that are used to detect an intrusion into a secured area. The supporting posts are used to both detect a movement of the taut wire and anchor the taut wire by using separate anchor and sensor elements. The taut wire system eliminates many of the weaknesses of prior taut wire systems by providing a less variant taut wire sensitivity.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: November 11, 2003
    Inventor: Haim Perry
  • Patent number: 6619627
    Abstract: The t-post fence bracket of the present invention provides a simple and effective means of securing a variety of items by use of u-hooks, plates or brackets to a widely used metal t-post without the use of tools. Items such as fence rails, buckets, chains, rope, wire, or solar panels may be attached or hung from the bracket to support it from the ground level. Further, the bracket does not have sharp edges, and hence humans and animals coming into contact with the bracket will not be injured thereby.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: September 16, 2003
    Inventors: Gordon L. Salisbury, Elyes Zhioua
  • Patent number: 6607184
    Abstract: An articulating fence post and gating system, which resiliently articulates from an upright position, perpendicular to the ground, to a flattened position, parallel with the ground, is described. The gating system comprises at least one resiliently articulating fence post, where the posts are connected by strands of fencing material. The gating system may be disposed with a standard stationary fence or an articulating fencing system. The gating system of the present invention avoids damage from a collision between farm equipment, such as a mobile irrigation system, and the fence by having the gating portion resiliently articulate, from an upright position to the ground, in order to allow the mobile equipment to run over the gate portion without breaking fence posts or snapping strands of fencing material. Once the equipment completely rolls over the gated portion of the fence, the gated portion automatically returns to its upright position.
    Type: Grant
    Filed: February 4, 2002
    Date of Patent: August 19, 2003
    Inventor: Donald C. Brown
  • Patent number: 6595496
    Abstract: A fence post assembly, as well as a fencing system and related method utilizing the fence post assembly, for forming a temporary enclosure, such as a horse corral for restraining horses. The fence post assembly is provided with an extensible and retractable fence strand, such as polytape or wire, as well as a ground anchor at one end of the post to enable the post to be anchored into the ground. The extendable and retractable fence strand is selectively positionable along the length of the post between the first and second opposite ends thereof. In addition, the fence strand can be electrically conductive to permit the enclosure to be electrified. Provision is made to maintain electrical continuity between fence strands.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: July 22, 2003
    Assignee: Waters Instruments, Inc.
    Inventors: Ronald H. Langlie, James B. Easley, Timothy N. Wilson
  • Publication number: 20030127636
    Abstract: A defense barrier for protecting a target from critical damage from the impact of a predetermined group of aircraft comprises: a plurality of towers spaced from the target, each tower being spaced from a neighbouring tower by a distance less than the wingspan of an aircraft in the predetermined group of aircraft having the smallest wingspan in the group; each tower being spaced from the target at least a distance d given by the formula: d=h/tan(theta) where h is the height of the tower and theta is the smallest vertical approach angle of any aircraft from the predetermined group of aircraft sufficient to inflict critical damage to the target.
    Type: Application
    Filed: October 23, 2002
    Publication date: July 10, 2003
    Applicant: Innofocus Consultants Limited
    Inventor: Ludwig A. Piron
  • Patent number: 6588733
    Abstract: A method joining two intersecting channel shaped members (12, 14) is disclosed. One of the members (14) has slots (24, 26) therein and the other member (12) has its flanges (18) inserted into the slots (24, 26). The slots (24, 26) can be in the flanges (18) of the member (12) or in the web (16) of the member (12). The members (12, 14) can be the verticals and horizontals of a palisade fence.
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: July 8, 2003
    Assignee: ECO Beam Technologies Limited
    Inventors: Michael Anthony Tremeer, Charles Edward Friebus
  • Patent number: 6583363
    Abstract: A unitary insulator of plastic material for supporting an electrified conductor wire in a horizontal position when the insulator is fastened to either a vertical post or is rotated slightly and is fastened to the diagonally extending wires of a chain link fence.
    Type: Grant
    Filed: January 7, 2003
    Date of Patent: June 24, 2003
    Inventor: Robert M. Wilson, Jr.
  • Publication number: 20030066993
    Abstract: It is therefore an object of the present invention to go some way towards overcoming the above-mentioned shortcoming of known fencing systems by providing a visual deterrent to animals.
    Type: Application
    Filed: August 3, 1998
    Publication date: April 10, 2003
    Inventor: ARNOLD SHIREK CHAMOVE
  • Patent number: 6533881
    Abstract: Composite metal and plastic fencing includes a plurality of spaced apart fence posts and at least one fence rail member vertically supported on the fence posts and extending between the fence posts. The at least one fence rail member further includes at least one longitudinally extending fence wire, an adhesive layer adhered to the at least one fence wire and a layer of synthetic resin material adhered to the at least one fence wire by the adhesive layer. The layer of synthetic resin material encloses the at least one fence wire and may form at least one web extending between a plurality of spaced apart fence wires.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: March 18, 2003
    Inventor: John Ronan Wall
  • Publication number: 20030024193
    Abstract: A fastener including a body having a predetermined axial length, wherein the body includes a nail head at one axial end of the body, a textured portion at an opposite axial end of the body, a shank portion extending between the nail head and the textured portion, and wherein the shank portion has an axial length in excess of at least one-third of the axial length of the fastener body, a raised ring integrally formed in the shank portion intermediate the nail head and the textured portion and a resilient ring seated against the raised ring on the side of the raised ring opposite the nail head.
    Type: Application
    Filed: August 2, 2002
    Publication date: February 6, 2003
    Inventor: Ben L. Schmid
  • Patent number: 6513793
    Abstract: This electric fence comprises at least one electrically conducting metal wire (1) with good mechanical properties, associated with a support, and further incorporates at least one other electrically conducting wire (4) with good electrical conductivity, sheathed with an insulating material (5) over its entire length except for zones distributed at more or less regular intervals where the said conducting wire (4) is in direct or indirect contact with the said conducting metal wire or wires (1) with good mechanical properties.
    Type: Grant
    Filed: January 4, 2001
    Date of Patent: February 4, 2003
    Inventor: Jean-Michel Bellon
  • Patent number: 6505950
    Abstract: A newel post system contains a light emitting source, such as a halogen and/or fluorescent bulb, for example. The system includes a newel post with a central bore for installing the light source and openings which permit the light to be emitted external of the newel post. The light source preferably is connected to a conventional electric power grid, and, in the preferred embodiment includes a transformer and a sensor that closes to provide power to the light emitting source when the sensor senses some predetermined condition. The light source may also be connected to a power source via an emergency power supply unit whereby the emergency power supply unit provides power to the light bulb when the power ceases to be delivered to the emergency power supply unit.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: January 14, 2003
    Inventors: Dale C. Natoli, Paul Burr
  • Patent number: 6479909
    Abstract: Several storage condensers (1, 1′, . . . 1″) are mounted in parallel. Several thyristors (2, 2′, . . . 2″) are each mounted in parallel with one condenser (1, 1′, . . . 1″) to ensure the individual discharge of each condenser without modification of the condition of the other condensers. The discharge of the condensers (1, 1′, . . . 1″) is controlled in sequence so as to deliver to the secondary of the transformer a complex pulse comprised by a series of elemental pulses, each elemental pulse corresponding to the individual discharge of one condenser.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: November 12, 2002
    Assignee: Lacme
    Inventors: Valery Hamm, Yves Mulet-Marquis
  • Patent number: 6472602
    Abstract: An electric fence line including a flat tape of plastic monofilament yarns and electrically conductive warp strands is disclosed having a diagonally crossing electrically conductive bonding wire. The electric fence line is constructed by weaving the supporting monofilament yarns in a parallel manner with the conductive warp strands and weaving therein a conductive bonding strand in a repeating pattern diagonally crossing the warp strands. The bonding strand is woven diagonally by repeatedly inserting the bonding strand at specific points through the warp yarns and a comb while moving the bonding strand laterally using a cam or linear actuator device when the bonding strand is held by a needle above the comb, warp yarns, and conductive warp strands. Electrically conductive 8 mil wire constructed of stainless steel is preferably used for the conductive warp strands and the bonding strand.
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: October 29, 2002
    Inventor: Gary Pokrandt
  • Patent number: 6456198
    Abstract: It is an object of this invention to provide a fence sensor which can achieve an excellent detection stability without using a current for generating an electric field nor infrared rays. The fence sensor comprises a detection electrode (8); a reference electrode (9) insulated from the detection electrode (8); a chargeable member (4) insulated from both of the detection electrode (8) and the reference electrode (9); and a detection circuit (20) for detecting a change in the electrostatic capacitance between the detection electrode and the reference electrode that is generated by the presence of an object to be detected within a detection region of the detection electrode. In this fence sensor, the chargeable member is arranged such that at least a part of the chargeable member is situated within the detection region of the detection electrode. Further, the chargeable member is formed from a conductor.
    Type: Grant
    Filed: March 27, 2001
    Date of Patent: September 24, 2002
    Assignee: KS Techno Co., Ltd.
    Inventors: Ryochi Kato, Hideto Kato, Kunihide Kamiyama, Kiichi Seino
  • Patent number: 6450483
    Abstract: A rodent guard system for inhibiting rodents from entering a predetermined area on a surface comprises a perimeter fence which extends around the predetermined area. The perimeter fence comprises a horizontally disposed barrier member having an upstanding barrier member extending upwardly therefrom. At least one first electrical-conducting member is positioned on the horizontally disposed barrier member between the upstanding barrier member and the outer edge of the horizontally disposed barrier member. At least one second electrical-conducting elongated member is positioned on the upstanding barrier member. The first and second electrical-conducting members are operatively connected to a source of electrical energy whereby the system is operable to complete a circuit across the electrical-conducting members through the rodent's body as the rodent attempts to traverse the barrier members.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: September 17, 2002
    Inventor: James T. Baum
  • Publication number: 20020066895
    Abstract: A fence tape, rope or wire for transmitting an electric current to an animal that touches the fence tape, rope or wire, having a support structure and an electrically conductive conduction structure (3). The conduction structure (3) has different electrically conductive materials having mutually distinctive electrical and mechanical properties. One of the materials has a better electrical conductivity. The other material has a greater resistance to tensile and bending loads. The conduction structure (3) contains at least one composite filament having, viewed in cross section, a conduction zone (4) from the electrically better conducting material and a self-supporting support zone (5) from the better material as to tensile and bending loadability. Mechanical loading of the electrically better conductive material is limited and an electrically conductive bridge is even maintained if an interruption of the electrically better conductive material occurs.
    Type: Application
    Filed: October 11, 2001
    Publication date: June 6, 2002
    Inventor: Dirk Wildschut
  • Patent number: 6398191
    Abstract: The invention refers to a device for an electric fence. The device include an electric unit (1) which is connectable to an electrically conducting fence (2) and which includes a voltage generator (4) arranged to apply a relatively high electric voltage to said fence (2). Furthermore, the device include a proximity detector (5), which is arranged to sense a state at which an animal is at least in contact with or in the proximity of said fence (2), and a control unit (6), which is connected to the voltage generator (4) and the proximity detector (5) and arranged to activate the voltage generator (4) to apply the relatively high electric voltage to the fence (2) in response to the state. The proximity detector (5) is arranged to detect the state by sensing an electric parameter, which substantially depends on the capacitance between the fence (2) and ground.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: June 4, 2002
    Assignee: Fogim HB
    Inventor: Gunnar Forsberg
  • Patent number: 6380490
    Abstract: An insulator for mounting an electric wire to a round vertical post. The insulator main body includes an outwardly opening slot through which the round post may be moved as the insulator is removed from the post. A nut is threadedly mounted at the slotted end of the main body limiting movement of the round post within the slot. A spacer within the slot limits inward movement of the slot walls. Various embodiments of the spacer are disclosed.
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: April 30, 2002
    Inventor: Charles O. Gaston
  • Patent number: 6363679
    Abstract: Fastening devices of this invention comprise a screw and a spacer element. The spacer element can be cylindrical in shape and includes a central opening extending between opposite axial surfaces. One or more grooves are disposed within and extend diametrically along at least one axial spacer surface. The groove is adapted to accommodate a wire section of a wire lath. The screw includes a head at one axial end positioned adjacent the spacer groove, and a tip at an opposite axial end for penetrating and engaging a surface of an adjacent structure. The head includes an enlarged diameter section that extends radially outwardly therefrom a sufficient distance to cover at least a portion of the groove when the mounting means is disposed within the central opening. The fastening device is used to attach a wire lath to another surface by placing a wire section of the wire lath within the spacer groove, and driving the mounting means into the other surface.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: April 2, 2002
    Assignee: Flannery, Inc.
    Inventor: Barry Rutherford
  • Patent number: 6360481
    Abstract: The invention involves a fence for repelling plant-damaging animals comprised of a row of tubes each having a top end and bottom end, and at least one chemical-composition-containing tube having at least one exit port; a connector for attaching each tube to each adjacent tube; and a chemical composition repellant to plant-damaging animals, contained within the at least one chemical-composition-containing tube, whereby a repellant character of the chemical composition is releaseable from the at least one chemical-composition-containing tube through the exit port.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: March 26, 2002
    Inventor: Heather Nesic
  • Patent number: 6353187
    Abstract: A plastic insulator for holding an electrified conductor, and particularly a conductor of a tape configuration, in insulated relation to a fence post and in elevated position above the ground. The insulator includes a clamping arrangement releasably holding the conductor against axial or radial movement by a pair of conductor engaging members hinged together for movement between a tape receiving and a tape clamping position. The clamping arrangement includes a latch mechanism with a coating finger and a deflectable tab with an opening to receive the finger to prevent relative movement of the conductor engaging members and inadvertent opening of the clamping arrangement.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: March 5, 2002
    Inventor: Robert M. Wilson, Jr.
  • Patent number: 6343778
    Abstract: A fencing system which can resiliently articulate from an upright position, perpendicular to the ground, to a flattened position, parallel with the ground, is described. The fence system comprises at least two fence posts, where at least one fence post is a resiliently articulating fence post, and where the posts are connected by strands of fencing material such as barbed wire. The strands of fencing material are kept taut across the fence system by a tensioning system. The articulating fence posts include a shaft that supports the strands of fencing material, and an isotropically flexible member which is attached to the bottom end of the shaft. The fence system of the present invention avoids damage from a collision between farm equipment, such as a mobile irrigation system, and the fence by having the fence resiliently articulate, from an upright position to the ground, in order to allow the mobile equipment to run over the fence without breaking fence posts or snapping strands of fencing material.
    Type: Grant
    Filed: September 20, 1999
    Date of Patent: February 5, 2002
    Inventor: Donald C. Brown
  • Patent number: 6344617
    Abstract: A fence rail holder for connection to conventional metal fence posts having a generally T-shaped cross section is provided which allows PVC fence rails to be connected to metal fence posts. The fence rail holder detachably mounts on a fence post using at least one clip which attaches to the T-shaped fence post. Openings at opposite side surfaces of the fence rail holder receive and support the fence rails. The fencing system allows the addition of a very visible, white PVC or other rail to a conventional barbed wire or wire mesh fence. The fencing system also includes wire support members which allow electric wire or other wire to be easily connected to a PVC fence.
    Type: Grant
    Filed: May 28, 1999
    Date of Patent: February 5, 2002
    Inventor: Joseph J. Berto
  • Patent number: 6341550
    Abstract: A light weight, strong and flexible, braided electrical fence rope, for fences to contain livestock and keep unwanted animals out, combines in its outer braided jacket electrically conductive elements with high strength non-conductive elements in a double helix configuration. The outer braided jacket will preferably surround an inner core of non-conductive high strength elements. The high strength non-conductive elements and the physical properties of the braided rope construction provide inherent strength and flexibility properties to the fence rope. The conductive elements in the outer braided jacket are selected to provide an effective electric shock when contacted by an animal. This electric fence rope combines barrier strength and psychological deterrence to both domestic and wild animals.
    Type: Grant
    Filed: May 4, 1999
    Date of Patent: January 29, 2002
    Inventor: Eric White
  • Patent number: 6296233
    Abstract: The invention relates to a retainer clip or latch attached to a fence post, such as a plastic fence post, for use in electric fences, that can be used with different types of fence strand members, and that is operated by hand to permit easy securement and removal of the fence strand members. The clip includes first and second portions which are hingedly attached together at one end and are releasably engageable with each other at the opposite end. The clip defines a loop at one end for holding an elongate fence strand member, such as wire, and an elongated area for holding a broader fence strand members, such as electric tape. The loop and elongated area are separated by a finger which extends from the second portion and into a notch in the first portion. The clips can be directly attached to a head portion of a T-shaped fence post at spaced locations along its length.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: October 2, 2001
    Assignee: North Central Plastics
    Inventors: Jon A. Berg, Ronald H. Langlie, David F. Buelow
  • Patent number: 6290190
    Abstract: A support device (1) for supporting a length of material (8) wherein the support device includes: at least one support finger (4,5) for supporting the length of material (8) which applies an initial load to the support finger (5); the support device characterised in that the support finger (5) no longer supports the length of material (8) when the support finger is placed directly or indirectly under a load substantially greater than the initial load.
    Type: Grant
    Filed: June 8, 1998
    Date of Patent: September 18, 2001
    Assignee: Gallagher Group Limited
    Inventor: Gregory David Kendall
  • Publication number: 20010015426
    Abstract: This electric fence comprises at least one electrically conducting metal wire (1) with good mechanical properties, associated with a support, and further incorporates at least one other electrically conducting wire (4) with good electrical conductivity, sheathed with an insulating material (5) over its entire length except for zones distributed at more or less regular intervals where the said conducting wire (4) is in direct or indirect contact with the said conducting metal wire or wires (1) with good mechanical properties.
    Type: Application
    Filed: January 4, 2001
    Publication date: August 23, 2001
    Inventor: Jean-Michel Bellon
  • Patent number: 6264172
    Abstract: An electric fence is disclosed for keeping selected small animals out of an enclosed area. The electric fence has an electrically conductive screen, a plurality of support members for supporting the screen, at least one electrically conductive element positioned adjacent to the screen on a side of the screen opposite the enclosed area, the electrically conductive element mounted to the fence by a plurality of mounting elements, the electrically conductive element being operably couplable to an electric charge generator, and the screen being electrically grounded. The electric fence may be mounted adjacent to a perimeter fence by a distance greater than the distance the selected animal can jump.
    Type: Grant
    Filed: August 21, 1998
    Date of Patent: July 24, 2001
    Assignee: Ontario Hydro
    Inventors: Allan James Ball, James Richard Aiken
  • Patent number: 6264173
    Abstract: An electrified fence for animals and a method for enclosing animals in an area or excluding animals from an area. The electrified fence includes a plurality of supports inserted in the ground at a predetermined spacing. A plurality of flexible conductive members project radially from each support. The members of one support are positioned such that at least one of the free ends of the members secured to one support is in close proximity to at least one of the members secured to an adjacent support. The flexible members of each support are electrically interconnected to a source of electricity. The invention also covers a method of enclosing animals in an area or excluding animals from an area.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: July 24, 2001
    Inventors: Robyn Badger, Frank Stoudek, Spencer Tilton
  • Patent number: 6257558
    Abstract: An apparatus for protecting the gate of an animal enclosure with an electrified wire that also extends along fencing includes a reel that dispenses and collects the wire to minimize the possibility of shock during gate opening and closing procedures. A hollow reel housing is mounted to a first fence post to which the gate is hingedly attached. A truncate wire connected to a source of electrical power such as an electrified fence wire extends into the hollow reel housing through a first opening and is connected to a nonrotating electrical contact. An annular rotating electrical contact is in electrical communication with a proximal end of wire coiled about the reel and is mounted on the reel so that the wire remains in electrical communication with the source of power when the reel is rotating in a wire-dispensing direction or in a wire-collecting direction. The wire, when uncoiled, extends through a second opening formed in the hollow reel housing.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: July 10, 2001
    Inventors: Paul A. Levine, Kristen M. Levine
  • Patent number: 6209853
    Abstract: An electric wire insulator and support bracket for metal fence posts having a cylindrical bracket arm slotted along its length to receive and be mounted on a flange of a steel fence post. Tie holes are located at each side of the slot for positioning a tie member for securing the bracket to the post. Wire retention slots are located in each end of the arm for supporting electric fence wires and retention pins confine the wires in the slots.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: April 3, 2001
    Inventors: Lewis Roy, Duane L. Roy
  • Patent number: 6173942
    Abstract: Electric fences consist typically of branches, preferably running horizontally and vertically, connected to each other in the form of a network, with conductor branches made of a non-conducting material and provided with an electrical conductor or constructed directly as an electrical conductor. The conductor is connectable to the voltage conducting post of an electric fence device. In the prior art all horizontal branches are provided with an electrical conductor. This entails problems for the confinement efficacy, since in the case of fouling by growth encrustation, a large portion of the electrical energy can be lost or leak to the ground. To construct the electric fence in such a way that the loss or leakage of electrical energy into the ground is prevented as much as possible, only a few of the horizontal branches are constructed as conductor branches having relatively high electrical conductivity, and the other horizontal branches are constructed as non-conductor branches.
    Type: Grant
    Filed: December 16, 1998
    Date of Patent: January 16, 2001
    Assignee: Horzont Geratewerk GmbH
    Inventors: Wilhelm Weinreich, Robert M{umlaut over (u)}ller
  • Patent number: 6131885
    Abstract: A plastic fence post for use in electric fences, which can be quickly and easily adjusted in height to permit changes in the height of the fence, and which can be used with different types of fence strands. The fence post includes an elongated, T-shaped plastic lower post member having one end adapted for insertion into the ground and an opposite end having a T-shaped slot formed therein. A plastic upper member, which can either be an upper fence post or a post cap, includes a T-shaped tongue extending therefrom that is secured within the T-shaped slot so as to secure the upper member to the lower post member. A pin extends through aligned holes in the end of the lower post member and the T-shaped tongue in order to fasten the upper and lower members together. The height of the fence can be increased by disposing the tongue of the upper fence post within the T-shaped slot, and using the pin to secure the posts together.
    Type: Grant
    Filed: August 11, 1997
    Date of Patent: October 17, 2000
    Assignee: North Central Plastics, Inc.
    Inventors: Jon A. Berg, Ronald H. Langlie, David F. Buelow
  • Patent number: 6036175
    Abstract: A panel can be assembled with similar panels to form a security fence or other barrier. The panel carries at least one wire connected, in use, to a source of high tension impulse electrical voltage. The wire is housed to prevent contact therewith except where penetration of the housing occurs. Panels can be positioned on or above the top of an existing fence or other barrier. An electric fence kit is also provided for erection of an electric fence in an existing fence. The kit includes a plurality of wires to be electrified, at least two posts, and mounting structure for mounting the posts in the existing fence and a plurality of guides for each post. Each guide is for guiding one of the wires, in use.
    Type: Grant
    Filed: May 8, 1997
    Date of Patent: March 14, 2000
    Assignee: Gallagher Security Europe Ltd.
    Inventor: Graham Harper
  • Patent number: 6031870
    Abstract: A method and device for detecting on an electric fence system a communication signal from a total signal including noise and also electrical interference from electrical energizer pulses supplied to the fence. A signal detector detects, directly or indirectly, the level of noise or electrical interference in the total signal on the system, at least one of a filter associated with the signal detector and the amplitude of the total signal received is adjusted until the threshold of the filter blocks sufficient electric noise so that a sufficient part of the total signal received after filtering is the communication signal, and the adjustment of the filter threshold is not dependent on the communication signal alone. The validity of the communication signal is checked and the electrical energizer pulses are transmitted on the fence system in coordination with reception of the communication signals to reduce the interference.
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: February 29, 2000
    Assignee: Gallagher Group Limited
    Inventor: John Leonard Walley
  • Patent number: 6020658
    Abstract: An energy-efficient energizer for an electric fence for controlling livestock or the like, includes an output voltage sensor. By switching to extra storage capacitance and/or altering the charge voltage the energizer varies the duration of the output pulse and perhaps also the pulse voltage according to the sensed output, thus maintaining an effective livestock barrier and consuming high power only when required. Output pulses are about 8 kV (no load) down to 4 kV (wide range of loads). The control algorithm determines the capacitor charging time and initiates a charge sooner if a higher power pulse is to be delivered, so maintaining a constant pulse rate. The energizer includes a 12V DC power option and has a circuit for synthesizing a substantially unipolar pulse having low harmonic content.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: February 1, 2000
    Assignee: Stafix Electric Fencing Ltd.
    Inventors: Robert Charles Bryan Woodhead, John Talbot Boys, Andrew William Green
  • Patent number: 5996204
    Abstract: A method for quickly and easily attaching and removing a sign from a rope. The sign has a split-T portion defining flexible arms. The arms are bent to allow the rope to slide through transition slots to ultimately enter rope engaging channels. The arms are then released so that the transition slots have a width which restricts passage of the rope, thereby confining the rope to the rope engaging channels. The deflecting portions of the arms are located near the center of the sign to correspond with the natural position of a person's thumbs when holding the sign. The sign allows a new method for attaching a sign to a rope to be used, in which both arms are simultaneously bent from the center of the sign to insert the rope in the rope engaging channels.
    Type: Grant
    Filed: June 5, 1998
    Date of Patent: December 7, 1999
    Inventor: John V. Norwood
  • Patent number: 5992828
    Abstract: A fencing system including a plurality of vertical support members for supporting a plurality of elongate support members so as to create a physical barrier. A plurality of elongate conductors are attached to the elongate support members and positioned so that the elongate conductors attached to each elongate support member run parallel to the elongate support members. A power supply is connected to the elongate conductors so that an electrical potential is created.
    Type: Grant
    Filed: December 11, 1997
    Date of Patent: November 30, 1999
    Inventor: Brett R. Burdick
  • Patent number: 5982291
    Abstract: Electric fences used to keep animals in or out of a particular area of land often cover great distances over all manner of terrain, making it very difficult to ensure the effectiveness of the entire length of the fence, especially at points distant from a human supervisor or at points which are not in a direct line of sight from a human supervisor. This invention relates to an electric fence monitoring system having a centrally located monitor and one or more remote units positioned along the fence, where the monitor uses wireless communication to broadcast a request for information related to one or more electrical conditions of the electric fence and the remote unit receives the request, takes a reading and uses wireless communication to broadcast a data message back to the monitor via wireless communication.
    Type: Grant
    Filed: July 20, 1998
    Date of Patent: November 9, 1999
    Inventors: Julie A. Williams, James D. Kelley
  • Patent number: 5975501
    Abstract: The invention relates to a retainer clip or latch attached to a fence post, such as a plastic fence post, for use in electric fences, that can be used with different types of fence strand members, and that is operated by hand to permit easy securement and removal of the fence strand members. The clip includes first and second portions which are hingedly attached together at one end and are releasably engageable with each other at the opposite end. The clip defines a loop at one end for holding an elongate fence strand member, such as wire, and an elongated area for holding a broader fence strand members, such as electric tape. The loop and elongated area are separated by a finger which extends from the second portion and into a notch in the first portion. The clips can be directly attached to a head portion of a T-shaped fence post at spaced locations along its length.
    Type: Grant
    Filed: September 8, 1997
    Date of Patent: November 2, 1999
    Assignee: North Central Plastics
    Inventors: Jon A. Berg, Ronald H. Langlie, David F. Buelow