Abstract:
A personal security backpack emits audio alarm signals for attracting attention to a crime scene or crisis situation powered by a portable battery pack and contained within a separate, readily accessible component compartment of the backpack. Two shoulder straps and a spacious main compartment for holding personal items are provided. The alarm system remains concealed under an openable access flap that covers the entire component compartment. Two siren signal generators are disposed within the backpack proximate openings for generating loud distinguishable noise, with the sirens being unmuffled and pointed in opposite directions. A panic switch is mounted on the backpack&#39;s shoulder strap to provide easy access for activating the sirens. An adjustable anti-theft strap fastens across the chest, from one shoulder strap to the other, preventing the personal security backpack from easily being taken from the user.

Description:
FIELD OF THE INVENTION 
     This patent applications is a continuation-in-part patent application of U.S. Pat. No. 6,130,616. The present invention relates to an improved personal security device. More particularly, the present invention teaches an improved portable personal security device having an audio alarm for attracting attention to an emergency situation built into and concealed within a conventional-appearing backpack. 
    
    
     BACKGROUND OF THE INVENTION 
     Reports on crime continue to consume evening television and radio news broadcasts and fill the pages of newspapers throughout North America and other places in the world, particularly in urban areas. One practical solution is the use of devices by law-abiding citizens to attract attetion to themselves when confronted by a criminal intent on comitting a violent act. Various attempts have been made to address the forgoing problem of inconspicous crimes against persons, at least at the primary crime scene. For example, in my U.S. Pat. No. 5,748,089 and U.S. Pat. No. 6,130,616, both of which are hereby incorporated by reference in their entirety. I disclosed a portable personal security system having multiple distress signals for attracting attention to a crime scene. The system includes a battery pack and is contained within the body of a carrying bag having a carrying strap, an interior component compartment and a space for holding personal items. A siren and a visual signal generator disposed within the component compartment proximate openings selectively generate a loud distinguishable noise and a visual signal. Preferably, an arming switch is first placed in an “armed” position, such that a panic switch simultaneously activates the siren and the visual signal. 
     In my U.S. Pat. No. 5,748,089, the preferred visual signal generator included a spark flare and an igniter electrically mounted on a base plate disposed within the component compartment and connected with the battery pack. The visual signal could also be a high intensity strobe lamp electrically connected with the battery pack, whereupon actuation emits a high-intensity and high frequency light signal through the visual window. A panic switch comprised a rotatable key lock switch located on the inner front side of the external skin of the bag, having an “on” and “off” position operated by a removable key, where the system is activated only upon turning the key to the “on” position and can be deactivated upon turning the key to the “off” position. Alternatively, a key fob having a pressure sensitive switch coupled with an activation receiver disposed within the component compartment can serve as a panic switch, such that the system is activated only upon depression of the pressure sensitive switch and deactivated only upon turning the arming switch to the “unarmed” position. The system preferable included as a strap having a thin cable screwed into frame of the bag to avoid theft of the portable personal security system while being carried. 
     The aforementioned invention represented a significant improvement over the prior art. For example, one prior art approach is passive, as taught by U.S. Pat. No. 3,881,534, and includes a handbag provided with an detachable inner purse secured to a chain attached to the user. When a purse-snatcher attempts to forcibly steal the purse, the detachable inner purse holding the user&#39;s valuables remains attached to the user and defeats the objectives of the criminal. Although possibility “creating a scene” during the criminal event, such devices do not actively signal and accordingly do not effectively draw attention to the criminal act so that help can be summoned from other citizens or the police. 
     Other devices are disclosed in U.S. Pat. Nos. 3,701,140 and 4,067,290 as an audible alarm coupled between a woman&#39;s purse and purse handle. A sudden force exerted on the purse handle activates the audio alarm, such as during a purse snatching event. However, these devices are only operable during a purse snatching event and would be useless as a means of attracting attention for other, often more serious, crimes. Similarly, U.S. Pat. No. 4,759,309 discloses a hand-held audio alarm unit fueled by compressed gas that automatically activates when released, for example, through the sudden reaction of a crime victim. A drawback of this approach is that the automatic activation feature tends to promote false alarms and depletion of the compressed gas, possibly rendering it inoperative when needed. 
     U.S. Pat. No. 4,843,371 discloses an alarm system for inducing a thief to drop a stolen briefcase. A flashing light is taught that is triggered, along with other features, when an incorrect lock combination is used or the briefcase is stolen. Nothing is disclosed that allows a panic alarm for the rightful carrier of the briefcase while it is being carried. In fact, it is taught that the briefcase is to be charged with high voltage, rendering it impossible for the rightful carrier to simultaneously carry the briefcase and activate a visual and audio alarm. 
     While my U.S. Pat. No. 5,748,089 generally addressed and solved the aforementioned drawbacks in the prior art, it has been learned that improvements were still possible, particularly with regard to the nature of the bag, the compartment within which the alarm system is housed and concealed, the compartment within which personal articles might be carried and the location and nature of the panic switch. More particularly, it has been found that a more utilitarian design for use by both women and men is desired, particularly in urban college and hospital campus found in many, if not most, urban areas and that a separate arming switch may be, in some circumstances, undesirable. 
     Also sought were improved anti-theft capabilities and an improved location so that the alarm system is most efficiently employed. Bags carried by hand are usually at or near a user&#39;s knees and bags carried under an arm are usually partially hidden by the arm. Both locations tend to interfere with the visual signal and/or tend to muffle the audio signal, limiting the effective range of the security device. Moreover, it is desired that an improved panic switch be provided that is conveniently located for immediate activation under virtually all circumstances, yet incapable of being conveniently turned off. Finally, a more efficient manner of carrying the security device was sought. Improved access to the compartment within which the alarm system is housed was desired, in order to improve the convenience of replacing the alarm system batteries. 
     SUMMARY OF THE INVENTION 
     In accordance with the foregoing drawbacks associated with the state of the art prior, even in light of my U.S. Pat. No. 5,748,089 and co-pending U.S. application Ser. No. 09/314,365, it is an object of the present invention to universally provide women, men and children with an effective device for portable personal security while away from home, where the device is easily carried within a bag having the appearance of a conventional backpack, the backpack further being capable of carrying other necessary and desired items. It is a further object of the present invention to provide a portable personal security system that will emit distress signals at a higher relative height when activated that can be seen and heard for over great distances. 
     It is another object of the present invention to provide a portable personal security system which, once activated, will continue to function despite a criminal&#39;s attempt to shut the unit off. 
     It is still a further object of the present invention to provide women, men and children with a device that will carry everyday items within a large compartment, while the alarm system is housed in a separate and conveniently accessible compartment of the backpack. 
     A still further object of the present invention is to provide a portable personal security system provided with an anti-theft strap that fastens to both shoulder straps of the backpack, across the user&#39;s chest, such that the anti-theft strap prevents the personal security system from easily being taken from the user when activated. 
     Another object of the present invention is to provide a personal security backpack with a readily accessible panic switch mounted to one of the shoulder straps of the backpack. 
     These and additional objects of the present invention may be determined from a review of the instant disclosure, disclosing a personal security backpack having multiple distress signals for attracting attention to a crime scene or crisis situation. The system is powered by a battery pack and is contained within a separate, readily accessible component compartment of the backpack. Two shoulder straps and a spacious main compartment for holding personal items are provided. The personal security backpack&#39;s separate component compartment contains the alarm system, which remains concealed under an operable access flap that covers the entire component compartment. In one embodiment, a smaller, rectangular flap section, in the lower center, may be folded underneath the access flap to reveal a rectangular visual window in the component compartment. The alarm system can also be constructed into the bottom section of the main carrying compartment. 
     Two siren signal generators are disposed within the component compartment proximate openings for generating loud distinguishable noise, with the sirens being unmuffled and pointed in opposite directions. A panic switch is mounted on the personal security backpack&#39;s shoulder strap to provide easy access for activating the sirens. An adjustable anti-theft strap fastens across the chest, from one shoulder strap to the other, preventing the backpack from being taken from the user. 
     Other objects, advantages and features of the invention will become apparent upon a consideration of the following detailed description, when taken in conjunction with the accompanying drawings. The above brief description sets forth rather broadly the more important features of the present disclosure so that the detailed description that follows may be better understood, and so that the present contributions to the art may be better appreciated. There are, of course, additional features of the disclosure that will be described hereinafter which will form the subject matter of the claims appended hereto. 
     In this respect, before explaining the preferred embodiment of the disclosure in detail, it is to be understood that the disclosure is not limited in its application to the details of the construction and the arrangements set forth in the following description or illustrated in the drawings. The personal security backpack of the present disclosure is capable of other embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for description and not limitation. Where specific dimensional and material specifications have been included or omitted from the specification or the claims, or both, it is to be understood that the same are not to be incorporated into the appended claims. 
     As such, those skilled in the art will appreciate that the conception, upon which this disclosure is based, may readily be used as a basis for designing other structures, methods, and systems for carrying out the several purposes of the present invention. It is important, therefore, that the claims are regarded as including such equivalent constructions as far as they do not depart from the spirit and scope of the present invention. 
     Further, the purpose of the Abstract is to enable the U.S. Patent and Trademark Office and the public generally, and especially the scientists, engineers and practitioners in the art who are not familiar with the patent or legal terms of phraseology, to learn quickly from a cursory inspection the nature and essence of the technical disclosure of the application. Accordingly, the Abstract is intended to define neither the invention nor the application, which is only measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way. 
     These and other objects, along with the various features and structures that characterize the invention, are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the personal security backpack of the present disclosure, its advantages and the specific objects attained by its uses, reference should be had to the accompanying drawings and descriptive matter in which there are illustrated and described the preferred embodiments of the invention. 
     While embodiments of the personal security backpack are herein illustrated and described, it is to be appreciated that various changes, rearrangements and modifications may be made therein, without departing from the scope of the invention as defined by the appended claims. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a perspective view of a first embodiment of the personal security backpack of the present invention as it might be carried by a user, particularly showing the preferred panic switch wiring configuration; 
     FIG. 2 is a perspective view of a first embodiment of the personal security backpack system of the present invention; 
     FIG. 3 is a plan front view of a first embodiment of the personal security backpack of the present invention, particularly showing the preferred location for the panic switch; 
     FIG. 4 is a cross-sectional view of the interior componentry of a first embodiment of the personal security backpack of the present invention; 
     FIG. 5 is a general circuit diagram of the components for a first embodiment of the personal security backpack of the present invention; 
     FIG. 6 is a perspective view of a second embodiment of the personal security backpack of the present invention as a user might carry it; 
     FIG. 7 is a cross-sectional view of the interior componentry of a second embodiment of the personal security backpack of the present invention; and 
     FIG. 8 is a general circuit diagram of the components for a second embodiment of the personal security backpack of the present invention. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     The following is a description of the best mode presently contemplated for carrying out the invention. Other modes of carrying out the invention, without departing from the scope of the invention, will become apparent to those skilled in the art as the description proceeds. 
     Referring to FIGS. 1 through 3, a first embodiment of the personal security backpack for application of the present invention is shown. Although the size and shape of the backpack can vary, the preferably size is 13 inches wide by 17 inches high by 8½ inches deep. As best seen in FIG. 1, the personal security backpack  1  is preferably constructed from 1000 denier DuPont Cordura nylon and is provided with a component compartment  6  and large carrying compartment  10 . The carrying compartment  10  opens to reveal a spacious and fairly conventional backpack compartment with closures or double zippers  13 . The component compartment  6  houses the first embodiment of the alarm system of the present invention, the details of which are better shown in FIG. 4 as discussed below. A series of small openings are provided on each opposite lateral side of the component compartment  6  to form opposing siren windows  9  by which the audible siren of the present invention may by heard unmuffled and directly in nearly 360 degrees. By using a pair of sirens  14 ,  20  (as shown in FIG.  4 ), the probability of the audible alarm generator being pointed toward an area where there may be no observers is largely avoided. Thus, the effectiveness of the audible alarm is improved. 
     The component compartment  6  opens and fastens closed with double zippers  28 . The component compartment  6  is further covered with a water resistant compartment flap  7  that is retained in place through detachable buckles  31 , as is conventionally known. In this first embodiment, the flap  7  further comprises a smaller rectangular strobe flap  11  that is capable of being folded underneath the compartment flap  7  to reveal a strobe window  8  through which a strobe lamp  17  may be seen. The strobe flap  11  is preferably retained in the folded position to the inside of the flap  7  by conventional hook and loop fasteners when the user believes that the security function might be needed, although other fastening means, such as snaps and hooks can be used. In other situations, the strobe flap  11  is unfolded to lie flat against the rear and along with the rest of the flap  7  to protect the strobe window  8  from damage. The strobe window  8  may be simply a cut out section of the rear wall of the component compartment  6 , as shown in FIG. 2, although a window-like covering, such as acetate, can also be beneficially and preferentially used to protect the interior from dust, dirt, moisture, etc. By virtue of the fact that both the audio alarm and the visual alarm means are disposed within the backpack worn on a user&#39;s back, their respective heights are increased and the effectiveness of the overall alarm system is improved. 
     The backpack  1  has two shoulder carrying straps  2 . Mounted on one carrying strap  2  is a panic switch  4  having a pull out strap pin  5  that activates and deactivates the alarm system shown in FIG.  4 . The pin  5  is preferably an audio-style bayonet plug that is received within a switch and confidently retained in position until intentionally withdrawn by a detent, as is known. As shown in more detail in FIG. 1, the panic switch  4  is electrically connected to the component compartment  6  via switch wiring  3  through the carrying strap  2 , around the carrying compartment  10  and into the component compartment  6 . In FIG. 3, the backpack  1  is shown with preferred adjustable anti-theft strap  12  attached to and interconnecting the two shoulder carrying straps  2 . When properly buckled at buckle  32 , the anti-theft strap is largely effective to prevent the backpack I from becoming accidentally removed or removed by a perpetrator. 
     As shown in FIG. 4, several components make up the first embodiment of the alarm system of the present invention, all of which are housed in the component compartment  6  of the backpack  1 . A plastic injection molded base  26  and battery base  27  are utilized for mounting components. Two siren braces  19  and  29  are attached, preferably by screws, into the base  26 . Siren brace  29  supports siren  14  and siren brace  19  supports siren  20 , such that each of the sirens  14 ,  20  are positioned proximate one of the siren windows  9  when installed within the component compartment  6  and opposite each other. The sirens  14 ,  20  are preferably distributed by MCM Electronics and manufactured in Taiwan and should be loud enough to generate and attract attention from significant distances, preferably about 130 dB. 
     A circuit board brace  15  is attached to the base  26  and supports a strobe light circuit board  16 , which further comprises a xenon flash tube  17 . To protect the xenon flash tube  17 , a clear rectangular heat resistant and shatter resistant strobe cover  18  is screwed into the base  26  and the battery base  27 . The flash tube  17  is situation such that it is visible through strobe window  8  when installed in component compartment  6 . A three-paneled reflector plate  25  having panels angled at 45 degrees is mounted to the strobe light circuit  16  behind the xenon flash tube  17  to intensify and increase the apparent size of the xenon flash tube  17  to improve the visibility of the visual signal. 
     A battery pack  24  fastens into the battery holders  23 , which are mounted to the battery base  27 . A battery cover  21  attaches to the battery base  27  with two screws  22 . As shown, replacement of the batteries requires only opening the component compartment  6  and detachment of the battery cover  21 , and does not require the carrying compartment  10  to be emptied so that access to the batteries can by obtained. However, since the battery cover is screwed into place, the possibility of an assailant being able to quickly disable the alarm system is reduced. 
     As shown in FIG. 5, the alarm circuit diagram for the first embodiment of the present invention is shown. The battery pack  24  is preferably 12 volts DC. A positive line  28  is connected to the panic switch  4 . A panic switch line  30  is connected in series with the positive lines to each of the first siren  20 , strobe light circuit board  16  and the second siren  14 , each connected in parallel. The negative lines of these components are connected to the battery pack&#39;s negative line  29  to complete the systems circuit. 
     In operation, the first embodiment of the personal security backpack of the present invention is easy to operate with high effectiveness. Preferably, since worn on the back and presented to the surroundings at a higher height, the strobe lamp  17  is more visible. Also, with sirens  14 ,  20  directed in directions opposite each other, the audible alarm is more readily heard. Before using the visual alarm signal of the personal security backpack, only the strobe flap  11  need be folded under to expose the strobe  17 . If the strobe flap  11  is not so folded, the sirens  14 ,  20  will still activate. No arming switch is necessary. The personal security backpack of the present invention is always armed and ready for use. 
     To use the first embodiment of the personal security backpack of the present invention, the user simply grasps with one hand the pull out strap pin  5  of the panic switch  4 , which by virtue of their location on the straps  2  remains near the user&#39;s chest and available at all times. When a threat arises, the user simply pulls the pull out strap pin  5 , closing the circuit to the sirens  14 ,  20  and light strobe  17 . The sirens  14 ,  20  activate and emit a loud distinctive noise through the sound windows  9 , while the strobe lamp  17  emits a visual signal that is visible significant distances from the crime scene. After the alarm has been activated, the user may reinsert the pin  5  into the panic switch  4  to turn the system off. A particularly beneficial feature is that during an emergency, the user can simply activate the alarm with the pull out strap pin  5  and then throw the pull out strap pin away as the user moves away from the threat, thus making it nearly impossible to quickly disable the alarm and preventing the criminal from quickly turning off the siren. 
     A second embodiment of the personal security backpack of the present invention is shown in FIG.  6 . The backpack is similar in virtually all respects to the first embodiment of the present invention shown in FIGS. 1-3, except that the second embodiment does not include a visual alarm. That is, the backpack  1  is provided with small openings on either side of component compartment  6  to form opposing siren windows  9  by which the audible siren of the present invention may be heard unmuffled in virtually all directions. 
     As shown in FIG. 7, the components of the second embodiment of the alarm system of the present invention are shown. Again, the components are virtually the same as that of the first embodiment, except that the components necessary to provide the visual alarm system have been eliminated. Similarly, FIG. 8 shows the circuit diagram for the second embodiment that is similar to that previously shown in FIG. 5, with the exception of the elimination of the strobe lamp  17 . 
     The use of the second embodiment of the personal security backpack of the present invention is virtually the same as that described above. The user simply grasps, with one hand, the pullout strap pin  5  from the panic switch  4  and pulls the pullout strap pin  5 , closing the circuit to the sirens  14 ,  20 . The sirens  14 ,  20  activate to emit a loud distinctive noise through the sound windows  9 . As above, the alarm may be deactivated by reinserting the pin  5  into the panic switch  4  to turn the system off. 
     A benefit of the second embodiment of the personal security backpack is the lower cost associated with eliminating the strobe lamp  17  and associated circuitry, as well as the lower power consumption by the same, in further view of the fact that no additional steps need be taken to prepare the system for use, such as folding up the flap  11  of the first embodiment. 
     The personal security backpack of the present invention will increase the likelihood of women and men escaping violent crimes, as well as deter criminals by providing users with several simultaneous distress alarm signals heard and seen from great distances from the crime scene. These signals will inform any and every person, preferably within a significant radius, that the user is being threatened, therefore warding the perpetrator away from the scene and promoting assistance from fellow citizens or law enforcement officials. It should also be noted that the personal security backpack of the present invention can be used by emergency personal to locate the user in a smoke-filled room to avoid the hazard of fire, to locate an otherwise incapacitated user or to startle and ward off stray dogs or other animals, and is therefore ideal for backpacking and hiking as well as urban settings. 
     The objects of the invention have thus been attained in an economical, practical, and facile manner. To wit, an effective and convenient personal security backpack contains an immediately available alarm device which may be conveniently carried as a camouflaged as an ordinary accessory. While preferred embodiments and example configurations of the invention have been herein illustrated, shown and described, it is to be appreciated that various changes, rearrangements and modifications may be made therein, without departing from the scope of the invention as defined by the appended claims. It is intended that the specific embodiments and configurations disclosed are illustrative of the preferred and best modes for practicing the invention, and should not be interpreted as limitations on the scope of the invention as defined by the appended claims and it is to be appreciated that various changes, rearrangements and modifications may be made therein, without departing from the scope of the invention as defined by the appended claims.