Abstract:
An extreme emergency brake system designed for vehicles such as trucks, truck-trailers, buses, automobiles, and also for airplanes, during an extreme emergency situation that requires an emergency stopping ability in the event of failure of the normal service brake system, or due to dangerous weather conditions.

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     N/A 
     STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT 
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     COPYRIGHT NOTICE 
     A portion of the disclosure of this patent document contains material that is subject to copyright protection. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or patent disclosure as it appears in the Patent and Trademark Office patent file or records, but otherwise reserves all rights whatsoever 
     FIELD OF THE INVENTION 
     The present invention relates to an auxiliary emergency brake system for vehicles such as trucks, truck-trailers, buses and airplanes. Extreme emergency situations may arise from failure of the regular braking system due to glazed brake pads or failure of the hydraulic or pneumatic systems etc. These emergencies are more frequently encountered in roads in mountainous regions and could be aggravated by severe weather conditions. The same invention can be used to stop an airplane in case of failure of the landing gear, or in case of dangerous conditions of the landing strip due to heavy snow or raining. 
     SUMMARY OF THE INVENTION 
     It is an object of the present invention to provide a simple braking system for vehicles and aircraft in extreme emergency situations due to failure of the regular brake system. 
     It is another object of the present invention to provide a braking system for different types of vehicles during severe weather conditions such as heavy rain or snow. 
     Yet another object of the present invention to provide a braking system for airplanes in case of failure of the landing gear. 
     Still another object of the present invention to provide an extreme emergency brake system that reduces the braking distances in case of failure of the regular braking system, or in case of extreme weather conditions. 
     Another object of the present invention to provide an extreme emergency brake system that stops a trailer-truck without jack-knifing since the brake system is located near the rear wheels of the vehicle. 
     It is still another object of the present invention to provide an extreme emergency brake system that can be adapted to airplanes by installing the brake system in its cargo bay compartment. 
     Yet another object of the present invention to provide an extreme emergency brake system that is completely independent of the regular wheel braking system. 
     Another object of the present invention to provide an extreme emergency brake system that uses an electrical solenoid activation circuit that is independent of the pneumatic or hydraulic system. 
     It is still another object of the present invention to provide an extreme emergency brake system that can be repositioned manually after being used in an emergency. 
     Still another object of the present invention to provide an extreme emergency system that can save lives and avoid serious injuries by averting catastrophic road or air accidents. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a side view of the extreme emergency brake system in a raised or stored position; 
         FIG. 2  is a side view of the extreme emergency brake system in a deployed position; 
         FIG. 3  is a side view of the extreme emergency brake system in a raised position and located before the wheels of a tractor-trailer; 
         FIG. 4  is an upper view of the braking crossbeam described in the present invention; 
         FIG. 5  is a lower view of the braking crossbeam described in present invention; 
         FIG. 6  is a side view of an air plane with the deployed extreme emergency brake system approaching the landing strip; and 
         FIG. 7  is a detailed representation of the extreme emergency brake system installed in the rear bay compartment of an airplane. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       FIGS. 1 and 2  show the extreme emergency brake system, generally referenced as  1 , in the stowed and deployed positions respectively, and installed in the rear portion of a truck or bus, just behind the rear wheels. Emergency brake system  1  includes a parallelogram linkage including an upper arm  2  and a lower arm  3  connected at their upper end to the truck or vehicle frame member  4  by mechanical fasteners (e.g. bolts, screws, etc.), referenced as  5  and  6 . The lower ends of arms  2  and  3  are connected to supporting bars  9  of a braking crossbeam  10  by mechanical fasteners  7  (e.g. bolts, screws, etc). A braking pad  11  is attached to the lower surface of the crossbeam  10 . Braking pad  11  is preferably fabricated from a material having a high coefficient of fiction, such as a rubber or rubber-like material, however any suitable material is considered within the scope of the present invention. 
     A retaining system maintains emergency brake  1  in a stowed configuration. The retaining system includes a locking pin  12  to prevent deployment of emergency brake system  1 , and particularly, pivotal movement of arms  2  and  3 , when received within an opening  8  defined in flange extension  13 . Locking pin  12  is activated by a push rod  15  of solenoid  16  which is secured to the truck frame member  4  by bracket  17 . A sliding plate  18  has a first end in engagement with push rod  15 , and a second end attached to locking pin  12 . Sliding plate  18  is movably secured relative to truck frame  4  by bracket  19  which is affixed to the frame by mechanical fasteners  20 , such as bolts, screws, etc. A stop bar  24  is attached to frame  4  with mechanical fasteners  21 , and a coil spring  23  is secured to stop bar  24  and projects therefrom. Spring  23  engages the second end of sliding plate  18  so as to bias the sliding plate against push rod  15  of solenoid  16 . Solenoid  16  is activated through an electric control cable  27  and is secured in place by bracket  17  with mechanical fasteners  20 . Electric control cable  27  provides a means for allowing a driver or pilot to activate the auxiliary emergency brake system. A restraining stop  22  is attached to rear end of truck frame  4  by fasteners  21 , and functions to limit the movement of upper  2  and lower  3  arms when the extreme emergency brake system is deployed. The emergency brake system is deployed when the user (e.g. vehicle driver) actuates electric control cable  27  which in turn activates solenoid  16  whereby push rod  15  engages and moves sliding plate  18  overcoming the spring bias such that locking pin  12  is displaced from opening  8  in flange extension  13 . Upon activation, crossbeam  10  drops under the influence of gravity in response to the release of a locking pin  12  which retains a flange extension  13  which is attached to upper arm  2  by securing foot  14 . 
       FIG. 2  shows a braking crossbeam  10  and the braking rubber pad  11  deployed by gravity against road pavement  26 . This particular arrangement allows the extreme emergency brake system to obtain its optimal braking potential because the arms are positioned against the road pavement whereby movement of the vehicle maximizes braking pressure, similar to a door bar against the floor. 
       FIG. 3  shows a perspective view of the extreme emergency brake system  1  in its raised or stowed position and installed in front of the rear wheels  28  of a tractor-trailer. This arrangement will prevent jack-knifing of the trailer. 
       FIG. 4  is an upper/top view of the braking crossbeam  10  showing two sets of parallel bars, each referenced as  9 , attached to braking crossbeam  10  and provided with four bolts  7  that connect the lower ends of the arms  2  and  3  (not shown) to the crossbeam  10 .  FIG. 5  is a lower/bottom view of the braking crossbeam  10  showing braking rubber pad  11  secured in place by means of multiple bolts  29  to crossbeam  10  and provided with treads  30  and grooves  31 , similar to a rubber tire, to improve stopping performance. 
       FIG. 6  shows an aircraft approaching a landing strip  26  in case of an emergency due to failure of the landing gear. The extreme emergency brake system  1  has been deployed from the cargo bay, after cargo bay compartment doors  32  are open. 
       FIG. 7  is a detailed view of the extreme emergency brake system  1  configured for installation in the rear cargo bay compartment of an airplane (not shown) and in a reversed position (e.g. crossbeam/pad pointing toward the rear/tail end of the airplane). It is provided with a strong spring  34  which is secured in place by supporting block  33  and supporting pin  35 . Supporting block  33  is secured in place by mechanical fasteners  21  to frame  4 . The extreme emergency brake system is deployed when locking pin  12  is disengaged from opening  8  of retaining extension  13  by of pushing rod  15  of solenoid  16  which pushes sliding plate  18 . Sliding plate  18  is secured in place by bracket  19  that is attached to frame  4  with bolts  20 . Locking pin  12  is kept inside opening  8  by action of spring  23  during its stowed or raised position. Coil spring  23  is embedded in blocking piece  24  and keeps sliding plate  18  and locking pin  12  engaged in opening  8  of retaining extension  13  that is attached to upper arm  2  by means of securing foot  14 . Restraining piece  22  is attached to frame  4  with bolts  21  at front part of frame  4  and it is destined to stop movement of lower arm  3  beyond its limits. In this particular arrangement the braking crossbeam is lighter than the crossbeam of a truck and in this case will provide a smoother braking effect since the speed of a landing plane is much faster than the speed of a truck or bus. 
     As should be apparent, the auxiliary emergency braking system of the present invention may be adapted for use with land vehicles (e.g. trucks) or an aircraft. Accordingly, the term “vehicle” as used herein shall broadly be construed to mean land vehicles such as trucks, cars, vans, motorcycles, ATV&#39;s, and scooters, as well as aircraft.