Abstract: A cattle guard may include a front rail with at least one receptacle therein, a back rail with at least one receptacle therein, at least one support member having a first end disposed in the at least one receptacle of the front rail and a second end disposed in the at least one receptacle of the back rail, a left rail with a first plurality of receptacles therein, a right rail with a second plurality of receptacles therein, and a plurality of pipes extending between the receptacles of the left and right rails and over the at least one support member. Cattle guard kits and methods of installation are also disclosed.

Abstract: A cattle guard may include a front rail with at least one receptacle therein, a back rail with at least one receptacle therein, at least one support member having a first end disposed in the at least one receptacle of the front rail and a second end disposed in the at least one receptacle of the back rail, a left rail with a first plurality of receptacles therein, a right rail with a second plurality of receptacles therein, and a plurality of pipes extending between the receptacles of the left and right rails and over the at least one support member. Cattle guard kits and methods of installation are also disclosed.

Abstract: An injury mitigating stock guard that includes mutually parallel linear members defining linear pockets therebetween of sufficient size to allow the passage of the hoof of an adult domesticated animal. The linear members include one or more laterally extending flanges that prevent the further passage of the hoof through the bottoms of the pockets to prevent injury.

Abstract: A cattle grid comprising a first group of fixed bars (12) that are spaced apart with gaps therebetween and a second group of bars (20) that are movable between a lower position and an upper position. With the bars of the cattle grid in a first configuration, the second group of bars (20) are in the lower position, such that the upper portions of the bars of the second group (20) are lower than the upper portions of the bars of the first group (12), whereby gaps are defined between the bars of the first group to provide a barrier to the passage of animals. When the set of bars are in a second configuration, the second group of bars (20) are in the upper position such that the second group of bars (20) intermeshes with the first group of bars (12) so that the bars of the second group (20) occupy the gaps between the bars of the first group (12) to allow passage of animals across the bars.

Abstract: A cattle guard has a grate section, wherein the grate section is arced shaped and is positioned on a ground. An end member is hingedly coupled to the grate section. The end member allows the cattle guard to adjust to conform to different fence openings.

Abstract: A livestock guard. The livestock guard may include a rectangular base frame. Two vertical posts may be attached to the rectangular base frame. There may be a pivot bar centrally and longitudinally oriented within the rectangular base frame. There may be two livestock guard ramps within the rectangular base frame and pivotally attached to the pivot bar in such a way as to decline away from the pivot bar in opposite directions. The pivot bar may be supported at each end by a spring assembly housed in one of the vertical post members. The pivot bar may be supported in such a way as to normally rest at a predetermined height above the rectangular base frame and also in such a way as to be depressible to the height of the rectangular base frame when pressed under a certain weight.

Abstract: A cattle grid comprising a first group of fixed bars (12) that are spaced apart with gaps therebetween and a second group of bars (20) that are movable between a lower position and an upper position. With the bars of the cattle grid in a first configuration, the second group of bars (20) are in the lower position, such that the upper portions of the bars of the second group (20) are lower than the upper portions of the bars of the first group (12), whereby gaps are defined between the bars of the first group to provide a barrier to the passage of animals. When the set of bars are in a second configuration, the second group of bars (20) are in the upper position such that the second group of bars (20) intermeshes with the first group of bars (12) so that the bars of the second group (20) occupy the gaps between the bars of the first group (12) to allow passage of animals across the bars.

Abstract: To reduce the danger of bodily harm to occupants of vehicles that leave a roadway, a guardrail system includes an energy-absorption system is provided. The energy-absorption system including a cutting mechanism positioned to cut a guardrail section upon impact by a vehicle to decelerate the vehicle.

Abstract: A device to prevent incursion of wild elephants into human populated areas, and thereby protect the lives of both wild elephants and humans living in close proximity to elephant refuges, is disclosed. The device incorporates a series of rollers that discourage an elephant from crossing the device. Multiple units may be linked together to form a barrier of any desired length. The border on the frame of each unit is protected by a guard that pinches the foot of an elephant attempting to cross over on the butted edges where two units meet. Alterative embodiments of the device may include roller protrusions, a chemical repellent dispersant, and an electrified conductor wire.

Abstract: To reduce the danger of bodily harm to occupants of vehicles that leave the roadway, a guardrail system includes a guardrail terminal and a guardrail. The guardrail terminal includes cutting members positioned to cut said guardrail as guardrail moves within said guardrail terminal and the guardrail terminal moves with respect to the guardrail to cut the guardrail when impacted by a vehicle.

Abstract: To reduce the danger of bodily harm to occupants of vehicles that leave the roadway, a guardrail system includes a guardrail terminal and a guardrail. The guardrail terminal includes cutting means positioned to cut said guardrail as guardrail moves within said guardrail terminal and the guardrail terminal moves with respect to the guardrail to cut the guardrail when impacted by a vehicle.

Abstract: To reduce the danger of bodily harm to occupants of vehicles that leave the roadway, a guardrail system includes a guardrail terminal and a guardrail. The guardrail terminal includes cutting means positioned to cut said guardrail as guardrail moves within said guardrail terminal and the guardrail terminal moves with respect to the guardrail to cut the guardrail when impacted by a vehicle.

Abstract: The Texas gate includes a base frame adapted to be set into a roadway and a deck assembly secured to said base frame. The deck assembly includes a series of spaced parallel elongated deck members arranged in groups. First and second groups of said deck members are fixed to said base frame in spaced apart flanking relation to a central region of the gate assembly. At least one further group of deck members is pivotally mounted for movement from a lowered position overlying said central region and supported on said base frame in co-planar relation to said first and second groups of deck members to a raised position providing access to an area beneath said central region of the gate assembly to facilitate removal of debris and/or to provide a barrier to road traffic.

Abstract: A portable cattle guard is provided which includes an assembled rectangularly shaped base member. Contained within the confines of the base member are a pair of inclined cattle ramps movably connected along their longitudinal axis to a smaller, spring biased center ramp. The base member includes a pair of hollow vertical posts having inwardly facing guide slots cut therein. Each hollow post contains a coil spring assembly fixed to support the center ramp in normally upward attitude and depressible to a flat ramp configuration to allow vehicle passage.

Abstract: The disclosed cattle guard includes a base and grills which may easily be removed for cleaning without disturbing the adjacent roadway. The cattle guard includes side wings which are attached to the base to ease the removal of the grills. In a further aspect, the ends of the base include angled portions designed to facilitate funneling of water through the base while preventing ground erosion.

Abstract: A self retracting portable cattle guard (100) for connection between the gate posts (50, 50') in a gate opening and including a spring loaded reel mechanism (110) secured to one post (50) and provided with a flexible grid (120) having a cross bar (15) equipped with hooks (22) that are adapted to releasably engage an anchor assembly (130) attached to the other post (50'). The spring biased reel mechanism (110) will retract and rotatably store the grid (120) when the hooks (22) are disengaged from the anchor assembly (130).

Abstract: A portable pitless livestock barrier whereby vehicles or humans may easily gain access to a livestock enclosure but provides a deterrent to the unwanted passage of the livestock from such enclosure. The barrier is provided by having a horizontal main frame to be placed on the ground with a vertical frame supported and attached to each side of the main frame. Within the boundaries of the main frame are two platform grates that are connected to the main frame at the exit and entrance to the barrier but can be adjustably raised in the central area of the barrier by a spring biased lever lifting mechanism attached to each vertical frame which allows the platform grates to be forced to the ground when a vehicle passes over but when the vehicle has passed the grates regain their inclined position giving a perception of depth or poor footing to the livestock thereby providing a deterrent to their passage.

Abstract: A Portable Cattle Guard is provided which includes an assembled rectangularly shaped base member. Contained within the confines of the base member are a pair of inclined spring biased cattle ramps moveably connected along their longitudinal axis to provide a slight apex when in the relaxed state. The base member includes a pair of hollow vertical posts having inwardly facing guide slots cut therein. Each hollow post contains a coiled spring fixed at its upper end to the upper section of the post. The other end of the spring is connected to an end section of a leading bar of one of the ramps which is sufficiently extended to enter each of the guide slots. When a vehicle is driven on the spring-biased ramp, the ramp is flattened so that it is substantially parallel with the ground surface. When the vehicle passes over the ramp, the extended spring returns the ramp to its normal relaxed apex forming position.

Abstract: An elongated structure is provided including a pair of opposite end transverse end members and a plurality of laterally spaced apart and longitudinally extending bar members extending between and supported atop corresponding longitudinally spaced portions of the transverse end members. Mid-length portions of the transverse end members include upwardly and outwardly inclined shank portions over which the lower ends of upwardly and outwardly inclined bridging members are telescopingly engaged and each bridging member includes a pair of upwardly convergent bracing members whose upper ends are secured to the bridging members and whose lower ends are anchored relative to the opposite ends of the corresponding transverse member.

Abstract: A cattle guard has a grid with a plurality of spaced bars lying transverse to the direction of travel across the guard. The bars are supported by a plurality of spaced beams lying beneath the bars. The grid, in turn, is supported by a base in the ground. The base comprises a pair of side members positioned transverse to the direction of travel across the guard. Each of the side members has a side wall with a box-like flange member lying normal to the side wall and extending into the base. The grid rests on the flange member when the cattle guard is assembled and retained in position with respect to the base by locking elements. A plurality of columns extend between upper and lower walls of the flange member to support the grid. The base has a pair of end walls fastened to the side members during installation to complete the construction of the base.

Abstract: A fence line is provided including a pair of spaced posts between which a fence opening is defined and wherein a cattle guard is substantially centered in the opening and spans considerably less than the width of the opening. A pair of edge upstanding panel-like wing closure members are provided at opposite sides of the opening between the posts and the adjacent sides of the cattle guard and pivot structure pivotally mounts first corresponding upstanding base edge portions of the closure members at the opposite sides of the opening for angular displacement about upstanding axes and with the closure members including second free swinging upstanding edge portions opposite the first edge portions swingable toward and away from closed positions with the second edge portions at least closely adjacent the opposite sides of the cattle guard and an upstanding plane containing the fence line opening.

Abstract: A pre-cast concrete cattle guard having longitudinally extending rails and transversely extending beams. The upper edges of selected rails are armored with a protective metal cap which is securely anchored in the rails.

Abstract: A monolithic concrete stock grid including a planar base portion, a plurality of triangular cross-sectional ribs extending across the base portion and parallel to each other to define a plurality of open-ended troughs extending across the base portion and the upper portions of the ribs being so sized and spaced from one another as to allow vehicle passage but to prevent stock passage thereacross. A pair of elongated reinforcing members are disposed on either side of the grid and interconnect the upper portions of the ribs and are formed integrally therewith.

Abstract: A cattle guard for highways and other thoroughfares, as an extension of a fence line to prevent cattle from crossing into forbidden areas, is made up of concrete slab sections faced with sheet steel and placed end-to-end across the thoroughfare. The sheet steel facing for each section is fabricated by interconnecting in side-by-side relationship a series of trough-like lengths of sheet steel or the like pre-bent to provide alternate, up-facing valleys and ridges and an undersurface to serve as a form having reverse valleys and ridges into and onto which is poured wet concrete to provide a structural concrete base for the section. The trough-like lengths are preferably interconnected by flanges extending integrally from respective sides of the valleys and overlapped to provide double thick, sheet steel traction surfaces for the upfacing ridges. Tie plates are provided to interconnect the slab sections and to facilitate handling and placement of the individual sections.

Abstract: A cattle guard having a plurality of substantially parallel, longitudinally extending rails arranged on and transversely of a plurality of substantially parallel, longitudinally extending support beams. The rails are prevented from rocking on the support beams by wedge elements disposed between the rails for stabilizing the rails on the support beams.

Abstract: A boat stanchion is formed of a single, continuous strand of fiberglass and thermosetting resin. The fiberglass strand is wound into a loop having a multiplicity of turns and the loop is then flattened to form a substantially straight bundle of overlapping strand sections. The strand bundle is placed in a mold with thermosetting resin. One half of the mold includes a pair of pointed rods which separate the strand sections when the two mold halfs are brought together to form two holes. The partial loop of overlapping strand sections at one end of the bundle encompasses one of the holes and approximately one half of the overlapping strand sections at approximately a mid-point of the bundle are positioned on one side of the other hole and the remainder thereof are positioned on the other side of that hole.