Abstract:
A dive rescue search device has a stanchion with a locating mechanism for the device mounted thereon and a search area determining device based on a reel of rope cooperating therewith to properly direct the search.

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application is a continuation-in-part application based on U.S. patent application Ser. No. 09/182,704, filed Oct. 29, 1998, now U.S. Pat. No. 6,042,302, by the same inventor. 
    
    
     BACKGROUND OF THE INVENTION 
     This invention relates to a search and rescue device more particularly to a dive rescue search device designed to define the search area and a method for searching. 
     One of the primary functions, above and beyond the traditional fire fighting duties, of a fire department these days is search and rescue. In particular, the burden of doing underwater search or rescue usually falls to the fire department. For this purpose, fire departments need to have scuba divers. 
     A scuba diver is a highly-skilled person. These skills are well-used in search and rescue operations. To maximize the use of those skills, it is necessary to provide equipment to assist search procedures. The equipment must also be easy to use and to recover. 
     Such underwater rescues are very difficult procedures to complete. Accordingly, even though these matters are difficult to complete, it is highly desirable to do so in an efficient and thorough fashion so that the rescue, if possible, may be completed as quickly as possible. Speed of search is usually synonymous with a successful rescue. 
     Also, it is common for criminals to dispose of evidence underwater. Typical examples of underwater disposal elements include, but are not limited to, weapons, physical evidence from a crime scene, or other material. Such disposal of material in bodies of water is done, of course, in hopes that it will never be found. An efficient, underwater, search mechanism can create the greatest opportunity for recovery of the evidence. 
     It is very difficult to provide a mechanism, which can mark off a search area or search quadrant, so that the diver can be sure of the area, which has been searched. This is especially true in case of murky or unclear water. Such murky or unclear water is very common in the Midwestern United States. 
     The lakes and ponds and rivers common to the area contain water, which is rarely clear enough for an unassisted search, by a scuba diver. Some efficient marking device and method for the search area is required. Such a device or method can greatly add to search efficiency. 
     If the diver fails to search an area, it is a problem. If a diver searches the same area twice, unintentionally, it is a problem. Both of these problems add time to rescue or recovery. Solving these problems will greatly increase search efficiency. 
     It is desirable also to recover the rescue device. yet when such a device is deployed in water, it can be difficult to recover the same. If recovery of the search device can be provided in a more efficient manner, the use of the search device is still more efficient. 
     Various devices exist for assisting this search. However, it is complicated to use these devices on many occasions. If a device can be designed so that the search can be conducted simply, without backtracking over the same area while at the same time conducting an efficient search, great advantages can be obtained. The time used by the skilled diver is more effective, with a more clear marking out of the search area. 
     SUMMARY OF THE INVENTION 
     Among the many objectives of this invention is the provision of a dive rescue search device, capable of clearly defining the area searched. 
     A further objective of this invention is the provision of a dive rescue search device, with a stanchion. 
     A still further objective of this invention is the provision of a dive rescue search device, with a clear marking device for the search area. 
     Yet a further objective of this invention is the provision of a dive rescue search device, with an efficient recovery device. 
     Also an objective of this invention is the provision of a dive rescue search device, with an efficient deployment mechanism. 
     Another objective of this invention is the provision of a dive rescue search device, with a search area marker. 
     Still another objective of this invention is the provision of a dive rescue search device, with a clear diver marking area. 
     Yet another objective of this invention is the provision of a dive rescue search device, with an efficient positioning mechanism. 
     A further objective of this invention is the provision of a method for performing an efficient dive rescue search. 
     These and other objectives of the invention (which other objectives become clear by consideration of the specification, claims and drawings as a whole) are met by providing a dive rescue search device, having a stanchion with a locating mechanism for the device mounted thereon and a search area determining device cooperating therewith to properly direct the search. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 depicts a perspective view of the dive rescue search device  100  of this invention in use. 
     FIG. 2 depicts a perspective view of the support stanchion tube  120  for the dive rescue search device  100  of this invention. 
     FIG. 3 depicts a perspective view of the free lead weight assembly  200  the dive rescue search device  100  of this invention. 
     FIG. 4 depicts an exploded, perspective view of the support stanchion tube  120  for the dive rescue search device  100  of this invention. 
     FIG. 5 depicts a top plan view of the dive rescue search device  100  of this invention, in use. 
    
    
     Throughout the figures of the drawings, where the same part appears in more than one figure of the drawings, the same number is applied thereto. 
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     The dive rescue search device of this invention includes a stanchion with various implements secured thereto. The stanchion includes a base with four legs. Extending upwardly from the base is a stanchion tube. Mounted on the stanchion tube, is a reel of rope. The reel has a specified diameter, which in turn gives a positive length of rope paid out. With such a predetermined length of rope, the search area is clearly defined. 
     In this fashion the reel of rope can replace the two swivel members of the parent application and provide for a simpler device. The strobe light string is replaced. To the top of the stanchion tube is secured a buoy, which floats on the surface of the body of water and indicates the location of the stand and, more importantly, the position of the diver. 
     In a preferred fashion, the reel has about 20 to about 40 meters of a length of rope, the rope being about 0.5 to about 2.0 centimeters in diameter wound around the reel. More preferably, the reel has about 25 to about 35 meters of a length of rope, the rope being about 0.7 to about 1.7 centimeters in diameter wound around the reel. Most preferably, the reel has about 30 to about 35 meters of a length of rope, the rope being about 0.8 to about 1.2 centimeters in diameter wound around the reel. 
     Dimensions of the reel are critical, because that is what determines the area of the search. It is critical that the reel have a height and a diameter to pay out about 1.2 meters (four feet) of rope with each rotation. The height of the reel is sufficient to minimize variations in the pay out of the rope. 
     The reel slides onto the stanchion at the reel aperture and is secured thereto with upper and lower bushings on top and bottom respectively. The bushings are held in place by any holding mechanism. The reel preferably does not rotate, so that line payout can be predictable. Usually at least one set screw and, preferably several set screws are used for each one of the bushings. 
     The height of the reel is adjustable from 30 centimeters (12 inches) to 1.2 meters (40 inches) vertically from the ground or bottom of the body of water on the stanchion. Once the reel is on the stanchion and the set screws are tightened, the reel is stationary and will not rotate. 
     On the stanchion above the reel is a rope guide consisting of a rotating bushing, an arm connected at one end to the bushing and an eye at the other end of the arm, through which the payout line is let out. The rope guide rotates freely on the stanchion tube. The basic operation once the device is set on the bottom of the body of water is as follows. 
     The diver holds the payout line in one hand and swims around the reel in a circular motion while searching the bottom visually or using his other hand. As the diver swims, he rope guide follows the diver&#39;s path and the payout line is released off the reel freely. In a highly preferred situation, The circumference of the drum or rope holding section of the reel is about 1.2 meters (4 feet). As the diver travels a 360 degree pass, about 1.2 meters (4 feet) of rope are released from the reel. The area searched becomes an ever increasing spiral covering all of the 200 foot diameter search area. 
     The circumference of the drum or rope holding section of the reel is about 0.7 to about 2 meters. More preferably, the circumference of the drum or rope holding section of the reel is about 0.8 to about 1.8 meters. Most preferably, the circumference of the drum or rope holding section of the reel is about 1.1 to about 1.3 meters. 
     This device in conjunction with the previously submitted device, as described in the above-referenced parent application, allows the systematic search of an area substantially in the shape of a circle, the circle having a diameter of about 65 meters (200 feet). The position of the diver is automatically controlled to allow a thorough search of the entire area. This device is especially useful for searches in water with limited visibility where tactile search is the only productive technique. 
     The device can be used for rescue or recovery of a drowned or nearly drowned victim. The device can be used to locate lost objects on the bottom of a body of water. The device may also be used for evidence recovery. The device may additionally be used for underwater mapping or surveying. 
     The reel and rope guide is preferably attached to the stanchion, before the device is deployed for use. A lowering rope is attached to the eye on top of the stanchion. The entire device is lowered to the bottom of the body of water. The device may be deployed off the side of a boat, or it may be floated out to the point of the start of a search area. 
     The point of the start, can be the last known position of the individual or object of the search. A buoy with a dive flag is attached to the lowering rope where the rope breaks the surface of the water. A diver enters the water and descends to the device using the lowering rope as a guide. The diver searches the immediate area around the device, while holding on to the pan of the device. The diver then unclips the payout line on the reel from the clips on the top flange of the reel. 
     Holding the rope in one hand the diver then swims in a predetermined direction, clockwise or counterclockwise. Depending on how the rope is wound on the reel the diver swims in the opposite direction. If the rope is wound in a counterclockwise direction the diver swims in a clockwise direction and vice versa. The direction of deployment is a matter of personal preference. 
     While swimming, the diver does a visual search or a tactile search of the target area. As the diver swims, the rope guide follows the diver and the diver&#39;s rope is released off the reel. When the diver searches a 100 foot radius all of the rope will be off the reel. Instead of being let out, the diver will start to be pulled in as the rope rewinds on the reel. 
     The diver is finished searching the target area when he feels the inward pull toward the reel. The diver can surface and the device can be removed from the water. The device can be removed using the lowering rope. The reel is then loosened on the stanchion, and the payout line is rewound on the reel. When the payout line is reloaded on the reel, the payout line pushes into small plastic clips on the drum of the reel. The clips keep the rope from coming off the reel when there is slack in the payout line or when the unit is not in use. The device is ready to be re-deployed in the next target area. 
     The base for the dive search rescue device includes a platform supported by three or more legs. Four legs provide the most effective support for the platform in the underwater environment. The platform is preferably square or rectangular in shape, with upwardly turned flanges at the edge thereof. 
     Due to shape of the platform, at least one weighted member may be added to the platform. Usually the weighted member has an aperture adapted to receive the stanchion tube. With a square or rectangular shape, the weight may held in position by the flanges. The weight members assist in the positioning of the dive search rescue device, by overcoming the buoyancy of the water. 
     Alternatively, one or more standard lead diver weights may be used. This standard lead diver weight is readily available, weighs about 4.5 kilograms (10 pounds), and has dimensions of about 2.5 centimeters (one inch) by 12.7 centimeters (5 inches) by 7.6 centimeters (three inches) such weights may be placed on the platform. Such standard weights may be simply placed on platform and held there by their own weight. Tape may also secure standard weight or weights in position. Other securing devices may be used for the weight or series of weights also. 
     Such removable weights permit the device to be disassembled easily and stored. The dive search rescue device can also be reassembled quickly when use is desired. This flexibility of use and storage makes this device extremely useful. 
     In FIG. 1, the dive search rescue device  100  is depicted as in use. The diver  112  is secured to the dive search rescue device  100  by payout line  126 . The device  100  includes a weighted base  140  and a support stanchion tube  120 . The support stanchion tube  120  is connected to a buoy line  116 . A lighted buoy  114  is at the opposing end of the buoy line  116  and oppositely disposed from the support stanchion tube  120 . In this fashion, the buoy  114  can appear on the surface  110  of the water  108  while making the position of the search device  100  well known. 
     On the support stanchion tube  120  is mounted a reel  128  to support payout line  126 . Reel  128  is supported by an upper bushing  130  thereabove on support stanchion tube  120  and a lower bushing  132  therebelow on support stanchion tube  120 . At least one set screw  134  secures each of upper bushing  130  and lower bushing  132  to support stanchion tube  120 . Upper bushing  130  and lower bushing  132  cooperate to prevent to rotation of reel  128  on support stanchion tube  120 . 
     Above upper bushing  130  rotatably mounted on support stanchion tube  120  is a rope guide  158  consisting of a swivel sleeve  160 , a guide arm  162  connected at one end to swivel sleeve  160 . A guide eye  164  through which the payout line  126  is let out. The rope guide  158  rotates freely on the stanchion tube  120 , and permits dispensing of the payout line or payout line  126  for the diver  112  to use. 
     The base  140  has platform  124  with turned up flanges  144  at each edge thereof. A formed lead weight  178  slides over the support stanchion tube  120  down to the platform  124 . 
     Referring now to FIG.  2  and FIG. 4, on the support stanchion tube  120 , is mounted an upper eye bolt  154 . The upper eye bolt  154  receives the buoy line  116 . The upper bushing  130  and the lower bushing  132  provide a height adjustment for reel  128  and rope guide  138 . The upper bushing  130  and the lower bushing  132  are held in place by set screws  134 . 
     The rope guide  158  is connected and fixed to the rotating bushing  160  by weld nut  161 , and locked in place by lock nut  163 . Rope guide  158  includes guide arm  162  and guide  164  are secured by fasteners to rotating bushing  160  in a standard fashion. The fasteners include top lock nut  166 , coupling nut  170 , and lower lock nut  168 , as well as other suitable fasteners or substitutes. 
     Support stanchion tube  120  requires a securing device at both ends thereof. Support stanchion tube  120  has threaded end  180  to receive or couple to end cap  152 . A weldable end  182  or otherwise securable end is secured to base  124 . 
     Flanges  144  around platform  124  prohibit the flat lead weight  179  from rotating, because flat lead weight  179  has a shape similar to shape of the platform  124 , formed by flanges  144 . The flat lead weight  179  for the base  140  of the dive search rescue device  100  overcomes the buoyancy of the device  100 . Platform  124  may of itself have sufficient weight, but removable weights provide for easier transportation and use of device  100 . Centrally located in the formed lead weight  178  is an aperture  184  of sufficient size to permit formed lead weight  178  to slide over support stanchion tube  120 , and onto platform  124 . 
     The base  140  of the device  100  includes at least three legs  142 , or preferably four legs  142 . Legs  142  are preferably at the corner of the platform  124  of the base  140 . Legs  142  may be secured to platform  124  by welding, bolting or another suitable mechanism. This device  100  thus has stability in the positioning of the device  100  on the sea floor  118 . 
     In a preferred form each of leg  142  includes an upper portion  210  and a lower portion  212 . Upper portion  210  is connected to lower portion  212  at folding joint  214 . Upper portion  210  has an end threaded member  216  adapted to fit through platform aperture  218  and secured thereto with leg nut  220 . Folding joint  214  permits lower portion  212  to be folded adjacent to platform  124 . 
     Any number of formed lead weights  178  may be inserted over the support stanchion tube  120  in order to permit the base  140  to be properly supported and positioned on the sea floor  118 , of the body of water  108  being searched. In this fashion buoyancy may be overcome. 
     The end cap tether assembly  154  includes a first eye bolt  146 , a top lock nut  148 , and a top weld nut  150 . The top lock nut  148  and the top weld nut  150  fit into top upper eye bolt  146  and on end cap  152 . End cap  152  fits on the threaded tube end  180  of the support stanchion tube  120 . 
     The support stanchion tube  120  has a base end  182  welded or otherwise secured to the central portion of the base  140 . Base end  182  of support stanchion tube  120  may be also screwed, welded or otherwise secured to base  140 . Legs  142  are welded or otherwise secured to the base  140 . A desirable number of formed lead weights  178  or other weighted accessory are slidable mounted or otherwise secured over the support stanchion tube  120 . 
     As shown in FIG. 3, formed lead weight  178  is replaced by the standard lead diver weight  200 . Such a standard lead diver weight  200  may be simply placed on platform  124  and held there by their own weight. Tape  202  may also secure weight or weights  200  in position. 
     In FIG. 5, a top view of the sea floor  118  is depicted. With the diver  112 , and the consistent use of payout line  126  as determined by diameter of reel  128  permits a grid  106  on the sea floor  118  to be very efficiently searched. The device  100  may be more efficiently set and used, because one payout line  126  does not require the strobe lights of the parent application, although such is permitted. 
     This application—taken as a whole with the specification, claims, abstract, and drawings—provides sufficient information for a person having ordinary skill in the art to practice the invention disclosed and claimed herein. Any measures necessary to practice this invention are well within the skill of a person having ordinary skill in this art after that person has made a careful study of this disclosure. 
     Because of this disclosure and solely because of this disclosure, modification of this method and apparatus can become clear to a person having ordinary skill in this particular art. Such modifications are clearly covered by this disclosure.