Abstract:
Two barrier gates pivot over a flooded road one for each side of the road where the stream or river would flood the road. Floodwater contact plates or paddles on the barrier gate bottoms move the barrier gate from the force of the floodwater to block traffic from crossing the flooded road from both directions. A heavy spring on each barrier gate normally keeps the barrier gate off the road and allows the barrier gate to pivot from obstructing the traffic back to its original non-blocking position once flood water recedes.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    Not Applicable. 
       STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT 
       [0002]    Not Applicable. 
       THE NAMES OF THE PARTIES TO A JOINT RESEARCH OR DEVELOPMENT 
       [0003]    Not Applicable. 
       BACKGROUND OF THE INVENTION 
       [0004]    1. Field of the Invention 
         [0005]    The present invention relates to road barriers and particularly to a flood-actuated road barrier which comprises a flood roadblock gate system that is moved by the force of river or stream floodwater flowing over a road and which crosses over the road thereby blocking and preventing vehicles from driving into the floodwater on the road; the flood roadblock gate system comprises two gates, one gate for each side of the road where the stream or river would cross the road, each gate having one or more floodwater contact plates or paddles on the bottom thereof to move the gate using the force of the floodwater to block traffic from crossing the flooded road from both directions; a heavy spring on each gate keeps the gate off the road and allows the gate to pivot from obstructing the traffic back to its original non-blocking position once flood water recedes. 
         [0006]    2. Description of Related Art Including Information Disclosed Under 37 CFR 1.97 and 1.98 
         [0007]    Flooded roadways are dangerous for vehicles to drive through. Damage may occur to the vehicle, or worse yet, the driver and passengers may lose their lives. The depth of the water is hard to gauge and often looks shallower than it is. Indicating signs and lights have been developed to alert the driver that the floodwater over the road is too deep to drive through. These flood warning indicators are not often posted at stream or river crossings, but even when they are posted, drivers do not tend to heed their warnings. 
         [0008]    Examples of built-in roadway water barriers which divert floodwater from road surfaces are shown in U.S. Patent Application No. 20060072969 and U.S. Pat. Nos. 7,114,879; 6,623,210; 6,623,209; 6,338,594; 6,309,730 and 5,460,462. However, these examples are not designed to stop traffic from passing through a flooded road. 
         [0009]    U.S. Pat. No. 7,037,031, issued May 2, 2006 to Haynie, is for an automatic barricade for low water crossings which includes a trench across a road that is covered by a grate allowing vehicular traffic during normal dry weather. Inside the trench is a series of barricade elements, each of which includes a float. When rising water fills the trench to a predetermined level, each float rises and elevates the elements above the road. The barricade elements are sufficiently robust and intimidating to deter motorists from driving over them but are spaced apart to be light enough to be easily actuated by the float. The barricade elements are sufficiently close together that vehicles cannot pass between them. In another embodiment, a sensor is adjacent the trench to detect rising water and communicates with a motor connected to the barricade elements for raising them to a traffic blocking position. 
         [0010]    U.S. Pat. No. 4,879,545, issued Nov. 7, 1989 to Aguilar, provides a safety indicator device for low water crossing for signaling danger from floodwater over a low water crossing area. The device has a support post, a message panel, and flashing lights in electrical connection with an energy source, the electrical connection being completed by triggering a switch lever by either a tank float rigidly mounted to a bottom end of a centrally disposed elongate guide member or by a donut-shaped tank float received about the elongate guide member and stopped by a stop member, either the rigidly mounted float pushing the elongate rod upwards and triggering the switch lever, or the donut shaped tank float and stop pushing the elongate rod upwards and triggering the switch lever. 
         [0011]    U.S. Pat. No. 2,607,835, issued Aug. 19, 1952 to Bonar, shows an indicator placed on the side of the road, which is actuated by rising water, to indicate that the water height over the road is dangerous for vehicles to drive through. 
         [0012]    U.S. Pat. No. 874,608, issued Dec. 24, 1907 to Luther, claims a danger signal which is responsive to rising water or fire and which uses lights or bells to indicate the bridge, railway, or road is not passable. 
         [0013]    U.S. Pat. No. 6,688,028, issued Feb. 10, 2004 to Backe, describes a condition responsive traffic sign, wherein the controller may detect or sense a loss of electrical power, a drop in temperature below freezing, moisture (precipitation) or water (flooding) in the environment. A vertically disposed placard has two sections, one disposed over the other, with the upper section of the placard attached to a pole, standard or other mount. A hinge connects the bottom perimeter edge of the fixed section with the top perimeter edge of the lower, pivotable section, allowing the front surface of the pivotable section to rotate and fold flat against the front surface of the upper, fixed section. A catch mechanism releaseably holds the two sections flat against each other, preventing the pivotable section from unfolding. An electrical controller is attached to the back surface of the fixed section of the placard and senses when a condition to which the sign is responsive occurs. Upon the occurrence, the controller causes release of the catch mechanism, allowing the pivotable section to unfold under the force of a bias (e.g., spring) and/or gravity, or by an electric motive mechanism to display the front surfaces of both sections of the placard. When the condition no longer exists, the device may be returned to its folded configuration manually or electromotively (if so equipped). When the placard is unfolded, the front surfaces of the placard together display a first sign item, and when the placard is folded, the back surface of the pivotable section is presented and can display a second sign item. Therefore, alternative sign items may be displayed, depending on whether the sections of the placard are folded or unfolded. 
         [0014]    U.S. Pat. No. 116,247, issued Jun. 20, 1871 to Way, indicates a pivotable flood-gate for erecting over a stream, which during a flood is pushed open by the floodwater, and which closes after the flooding by means of heavy iron or steel springs. 
         [0015]    U.S. Pat. No. 944,210, issued Dec. 21, 1909 to Rhodes, puts forth a spring-closed flood gate which is placed across a stream. 
         [0016]    U.S. Pat. No. 6,646,559, issued Nov. 11, 2003 to Smith, concerns a method and apparatus for activating warning devices. The invention provides a system and method for activating one or more warning devices, such as weather warning sirens, environmental warning devices, gates that may automatically close in order to alter the effect or course of the flash flood or to divert traffic away from the flash flood, and the like, from a remote or central location. Warning devices situated across geographically dispersed areas can be remotely controlled from a central location, such as a weather center, on the basis of detected and predicted weather patterns and other environmentally hazardous events. One or more warning devices can be quickly and easily activated through a computer-implemented user interface that allows a user to select a group of warning devices that are in the path of an approaching hazardous event. Each warning device is activated through a communication line that transmits an activation code to each device. Each device provides confirmation that it has been activated, and the resulting activation is indicated on a computer screen. 
         [0017]    What is needed is a system of pivotable road barriers which automatically close over the roadway to block traffic by the force of moving water flooding the roadway and which automatically close by the force of a tension means when the water recedes. 
       BRIEF SUMMARY OF THE INVENTION 
       [0018]    An object of the present invention is to provide a system of pivotable road barriers with bottom water receiving paddles or panels which cause the barrier gates to automatically close over the roadway to block traffic by the force of moving water flooding the roadway and pushing against the paddles and which automatically close by the force of a tension means between each barrier gate and a pivot post when the water recedes. 
         [0019]    In brief, a flood-actuated road barrier which comprises a flood roadblock gate system that is moved by the force of river or stream floodwater flowing over a road and which crosses over the road thereby blocking and preventing vehicles from driving into the floodwater on the road. The flood road barrier gate system comprises two barrier gates, one barrier gate for each side of the road where the stream or river would cross the road. Each barrier gate has one or more floodwater contact plates or paddles on the bottom thereof to move the barrier gate using the force of the floodwater to block traffic from crossing the flooded road from both directions. A heavy spring on each barrier gate normally keeps the barrier gate off the road and allows the barrier gate to pivot from obstructing the traffic back to its original non-blocking position once flood water recedes. 
         [0020]    An advantage of the present invention is that it provides a system of pivotable road barriers which automatically close over the roadway to block traffic by the force of moving water flooding the roadway and which automatically close by the force of a tension means when the water recedes. 
     
    
     
       BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS 
         [0021]    These and other details of my invention will be described in connection with the accompanying drawings, which are furnished only by way of illustration and not in limitation of the invention, and in which drawings: 
           [0022]      FIG. 1  is a top plan view of a section of a roadway crossing over a perpendicular waterway showing the tops of the barrier gates of the present invention in the normal position parallel to the roadway on an upstream side of the roadway; 
           [0023]      FIG. 2  is a side elevational view of the section of the roadway crossing over the perpendicular waterway of  FIG. 1 , showing the ends of the barrier gates in the normal position parallel to the roadway on an upstream side of the roadway; 
           [0024]      FIG. 3  is a top plan view of a section of the roadway crossing over the perpendicular waterway of  FIG. 1  with the roadway flooded showing the tops of the barrier gates in the roadblock position stretching across the roadway perpendicular to the roadway blocking the travel lanes of the roadway and the sidewalks; 
           [0025]      FIG. 4  is a side elevational view of the section of the roadway crossing over the perpendicular waterway of  FIG. 3 , with the roadway flooded showing the front of the closer barrier gate in the roadblock position stretching across the roadway perpendicular to the roadway blocking the travel lanes of the roadway and the sidewalks; 
           [0026]      FIG. 5  is a front elevational view of one of the barrier gates showing the lights and reflectors that face the flow of traffic during flooding; 
           [0027]      FIG. 6  is a front elevational view of the other of the barrier gates showing the lights and reflectors that face the flow of traffic during flooding; 
           [0028]      FIG. 7  is a front elevational view of a barrier gate having an alternate embodiment of the bottom water receiving paddle with one portion in parallel alignment with the barrier gate and another portion extending perpendicularly away from the barrier gate; 
           [0029]      FIG. 8  is an end elevational view of the barrier gate of  FIG. 7  having an alternate embodiment of the bottom water receiving paddle with one portion in parallel alignment with the barrier gate and another portion extending perpendicularly away from the barrier gate. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0030]    In  FIGS. 1-8 , a flood warning road barrier device  10  comprises a pair of barrier gates  20 A and  20 B with bottom water receiving paddles  22 A and  22 B, respectively, for pivoting the barrier gates when flood water  40  pushes on the paddles so that the gates block traffic flow from both directions on either side of the flooded roadway  30 . 
         [0031]    At least one road barrier gate for a one-way road and preferably a pair of barrier gates  20 A and  20 B are each mounted on a pivot post  21 A and  21 B, respectively, on an upstream side of a roadway  30  having a passage of water  40  running beneath the roadway  30 . Each road barrier gate  20 A and  20 B comprises a rigid barrier structure for blocking traffic from one direction on the roadway, such as the two way traffic in a first lane  33 A and a second lane  33 B in  FIGS. 1 and 3 , and a bottom solid water receiving paddle  22 A and  22 B extending vertically below the rigid barrier structure with a bottom of the water receiving paddle above and adjacent to a level of the roadway  30 . A tension member  28 A and  28 B is attached between the rigid barrier structure and the pivot post  21 A and  21 B to retain the rigid barrier structure normally in a first position parallel to the roadway, as in  FIGS. 1 and 2  spaced apart from the travel lanes  33 A and  33 B on the roadway  30  so that when the level of the water  40  in the water passage exceeds the level of the roadway  30  to cause flooding of the roadway the moving water  40  hits the water receiving paddles  22 A and  22 B to cause the rigid barrier structures to swing over the travel lanes to block vehicles from traveling over the flooded roadway. A magnetic device  25 A and  25 B means stops the rigid barrier structures  20 A and  20 B in a second position substantially perpendicular to the roadway  30 , as shown in  FIGS. 3 and 4 , to block the travel lanes. After the water level recedes from the roadway the tension member  28 A and  28 B causing the rigid barrier structure to swing back to the first position, as shown in  FIG. 1 , parallel to the roadway  30  to allow vehicles to travel on the roadway. 
         [0032]    The rigid barrier structure  20 A and  20 B is longer than the width of the travel lanes  33 A and  33 B of the roadway and the means for stopping the rigid barrier structure in a second position comprises a barrier structure stop  25 A and  25 B, respectively, on the opposite side of the roadway from the pivot post, the barrier structure stop comprising a rigid structure contacting the rigid barrier structure and a magnetic attraction means for assisting in retaining the rigid barrier structure in contact the barrier structure until the flood waters recede and the tension means  28 A and  28 B swings the barrier structure back to the first position. 
         [0033]    In  FIGS. 5 and 6  showing the sides of the barrier gates facing traffic on the roadway, at least one light  18  and preferably an array of lights on each barrier gate  20 A and  20 B signals traffic at night. A means for activating the preferably battery powered flashing lights  18  comprises a pair of contacts closing an electric circuit between at least one battery and the flashing lights when the barrier structure contacts the means for stopping the barrier structure. The barrier gate preferably also further comprises a plurality of reflectors  17  visible to traffic at night. 
         [0034]    A barrier structure extension may be added if needed for blocking passage of non-vehicular traffic. If an extra gate is needed to prevent any foot traffic, bikes or motorized vehicles from the area of rising water further up the road this additional gate can be attached to the flood actuated gate by an fixed length rod. Rod can be made of metals, plastics, wood, or any material that is rigid. Rod length varies depending on the distance between flood actuated gate and extra gate. 
         [0035]    In use, the flood actuated barrier gates  20 A and  20 B are closed due to rising water, when water  40  flowing with a minimum force of 50 lbs per square foot at a depth of at least 6″ over the roadway  30  overcomes the tension apparatus (spring, cords, flexible material). One barrier gate  20 B moves clockwise and the other barrier gate  20 A moves counterclockwise by the force of the moving water  40  and when fully closed each barrier gate will be blocking the road  30  and walkways  34 A and  34 B that is being immersed in the rising water with the barrier gates parallel to the rising water  40  and perpendicular to the road and walkway. 
         [0036]    When the barrier gates are open or at rest, they are parallel to the road and perpendicular to the flow or potential flow of water. 
         [0037]    Barrier gates can be of variable height, length, and composition. Each barrier gate can be offset to the other gate as to prevent the gates from hitting each other when being open or closed. 
         [0038]    When the gate is closed by the force of the rising water, the attraction force of the magnet will be less than the tension of the spring, so once the rising water is retreating, and the force of the wafer is less than the force of the tension apparatus, the tension apparatus will bring the gate back to its open position, as in  FIGS. 1 and 2 . The fixed stops fabricated of any material prevent the gate for going past its open position. 
         [0039]    Eart tension member  28 A and  28 B can be fabricated of a spring, a rubber cord, or other flexible material returning to its original shape after extension which requires a minimum of 50 lbs of force exerted on it to fully extend it. One end of the tension member is attached to the movable portion of the barrier gate and the other to a fixed base of the barrier gate. 
         [0040]    The plate or paddle  22 A and  22 B attached to the barrier gate can be of a variable size of 1 square foot to 5 square feet, and fabricated of varied materials resistant to water and positioned at different heights off the ground. In an alternate embodiment of the paddle  22 C in  FIGS. 7 and 8 , the main portion of the paddle  20 C is parallel to the barrier gate  20 C and an orthogonal paddle extension  23  is perpendicular to the barrier gate  20 C. Plates or paddles can also be curved. When the plates or paddles have a force of water pushing on them greater than 50 lbs/sq-ft, the barrier gates will pivot over to block the roadway  30 . 
         [0041]    The tension of the tension members and size of the metal plates or paddles can be increased to compensate for any extra weight of the barrier gate, such as a barrier gate which is extra long for a wide roadway or has an extension gate for a sidewalk. 
         [0042]    It is understood that the preceding description is given merely by way of illustration and not in limitation of the invention and that various modifications may be made thereto without departing from the spirit of the invention as claimed.