Patent Publication Number: US-7584875-B2

Title: Gun holster

Description:
PRIORITY 
     This application claims priority from a provisional patent application filed on Jun. 25, 2003 with application Ser. No. 60/482,824 entitled “Security Holster”. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention generally relates to handgun holsters, and more particularly relates to holsters, which provide security against unauthorized withdrawal of a handgun. 
     2. Background Information 
     Police, security officers, and military personnel in a number of situations must be ready to withdraw and use a handgun in the line of duty at a moment&#39;s notice. In an emergency situation, withdrawing the handgun must be done in a completely natural and unobstructed manner so that it can be withdrawn as quickly as possible. The officer&#39;s life may depend on the speed with which he can withdraw the handgun. However, after the handgun is withdrawn, the situation may dictate other options or needs, requiring the officer to re-holster the handgun just as quickly. Current holsters do not meet this demand, without some continued manipulation of security straps, before the officer knows or has confidence that the weapon is secure. In this type of situation, the officer needs to be able to holster his handgun with one hand without looking at the holster, and while maintaining eye contact with the person in question. 
     The problem results when a suspect becomes an assailant, and attacks the officer and tries to gain access to his weapon. In the event of an attack, a holster is likely to be bumped, jostled, pried, and pressured with forces exerted on nearly any part of the holster. Some holsters have release mechanisms that may be accidentally engaged during such an assault, releasing the weapon from the effective grip of the holster. When an assailant attacks, it is of utmost importance that the officer maintains control of his handgun, and that the assailant does not get access to the handgun. Many holsters have been designed to accomplish this purpose in a number of different manners. However, they all suffer a number of drawbacks. Some require two hands to release and secure the handgun. This is unacceptable. Some of them secure the handgun with a device that can be difficult to release in a fast draw situation, and therefore is a dangerous security mechanism. Some holsters secure the weapon in place to keep it from bouncing out of the holster, but are not designed to withstand the attack of an assailant and would allow the handgun to be taken from the officer by the assailant. Some holsters use electronic devices for fingerprint recognition and run the risk of malfunctioning or having a dead battery. Some holsters require the user to tilt or rock the handgun, or twist it before it can be released from the handgun. Such a maneuver must be practiced frequently in order to ensure that the wearer can perform it without mistake in an emergency situation. Many of the holsters are unable to address the above-mentioned problems or provide a security holster for a left-handed user. Additionally, many holster using groups desire to have a uniform pattern for their equipment. Some groups use specific patterns and symbols to identify a user&#39;s equipment and identity. Most security holsters provide no manner in which the holsters can be customized or individualized for an individual or specific group. All of the above named difficulties are problems that face a security holster user, and an improved security holster is needed which solves these problems. 
     For these reasons, it is an object of the present invention to provide a security holster for use by left-handed and right-handed users, which allows a handgun to be quickly inserted or withdrawn with one hand without looking at the holster, and which secures the holster to the officer without undue manipulation of the handgun. It is a further goal of the invention that the security holster and corresponding locking and releasing mechanisms prevent an unauthorized withdrawal of the handgun due to an accident or during an assault on the wearer. It is a further object of the invention to provide a handgun-securing holster that is easily released by a natural and fluid motion of the officer whether left or right-handed. It is a further object of the invention to provide a security holster that may be fluidly inserted or removed from the holster. Another object of the invention is to provide a security holster that may be effectively customized with adhesive inlays for standardization and matching purposes. Another object of the invention is to require a minimum compression force that must be exerted on the security holster in order to engage and disengage the locking mechanism for a handgun. 
     SUMMARY OF THE INVENTION 
     One embodiment of the holster is specifically for left-handed users of a semi-automatic handgun. It includes a holster body. The holster body includes inner and outer rigid sidewalls that are spaced apart to define an inner cavity. The inner cavity has an open top portion into which the handgun is inserted. The top portion is also identified as the rear of the holster. The portion of the holster that is adjacent to the end of the handgun barrel is designated as the front or bottom of the holster. The holster also includes a locking means, which is designed to allow the handgun to pass by it. When the handgun is seated in the holster, the locking means is designed to engage a feature of the handgun, thereby preventing the withdrawal of the handgun prior to the release of the locking means. The security holster also includes a releasing means, which is mounted so that when a handgun is inserted within the holster, the releasing means is adjacent the right side of the handle of the handgun. In this version of the holster, the releasing means is configured for activation by movement of a user&#39;s left thumb. The releasing means is a release tab that is depressed by a left-handed user&#39;s left thumb as he/she reaches for the handgun. When the user&#39;s hand is on the handle of the handgun, the release tab is positioned directly below his/her thumb over the right side of the handgun handle. The release tab is operationally connected to a locking tab, and when the release tab is pressed down, the locking tab disengages from the handgun feature and allows the handgun to be withdrawn. 
     This version of the holster provides for one-handed insertion of the handgun into the security holster. When a handgun is pressed into the holster, the locking tab engages a handgun feature such as a trigger guard, the slide, or preferably an ejection port. This engagement prevents the handgun from being withdrawn until the release tab is activated by the left-handed user&#39;s left thumb. 
     The locking tab is a generally planar projection that extends from an arm connected to the release tab. The locking tab is configured to move from an open position that allows entry of the handgun without the handgun touching the locking tab, into a closed position in which the locking tab engages a feature of the handgun. The locking tab can be activated to move into engagement with the handgun feature such as the ejection port by compression of one or more springs built into the holster. Preferably, the locking tab passes through the ejection port on the slide of the semi-automatic handgun and locks under the ejection port on the slide, adjacent the barrel of the handgun. Alternatively, any feature of the slide could also be utilized because not all models of handguns have a space under the ejection port that can be utilized. Once engaged, the locking tab is typically pressed into engagement with the handgun feature by a spring, which is compressed during insertion into the holster. 
     The release tab of the holster is typically an elongated tray, which is configured for sliding engagement with the left-handed user&#39;s left thumb. The elongated tray extends from over the trigger guard to partially over the handle of the handgun, which allows the left-handed user to activate the release tab with his/her left thumb. 
     Another feature of this configuration of the device is that the locking tab engages the handgun feature with an audible indication of locking. This is typically a distinctive click, which in most environments can easily be heard and is a certain indication to the user that the handgun is engaged in the holster. The locking tab engages with sufficient force so that there is also a tactile indication of locking, which the user may feel through the handle of the handgun or through the body of the holster into his/her hip region. This version of the holster typically includes a pressure switch, which activates the locking means when the handgun is pressed into the holster with a required degree of insertion force. The pressure switch, also called a rebounding device, also operates with the releasing means, and a minimum degree of insertion force is required before the handgun is released. 
     Other embodiments of the security holster can include left or right-handed versions. A feature of one embodiment of the security holster is that the locking mechanism does not contact the slide of the gun as the gun is inserted into the holster. This is accomplished because the locking tab rests against the outside of the security holster until the locking tab is moved laterally, at which time a torsion spring causes the locking tab to rotate down and engage a feature of the handgun, such as an area between the slide ejection port and the barrel of the handgun. Lateral movement of the locking tab is caused by downward pressure from the handgun. Similarly, to release the handgun, downward pressure of the handgun is required so that the locking tab again moves laterally and clears the ejection port of the holster and may be raised away from the handgun by pressing the release tab. 
     A distinctive feature of the holster is that one action is utilized to seat the handgun and secure it in the holster. This action is pressing the handgun down. Seating it in the locking mechanism of the holster is clearly indicated by an audible click of the locking tab, and can also be felt through the user&#39;s hand or holster. Three actions are required to remove the handgun from the holster. These three actions are: (1) pushing the gun down, (2) depressing the release tab, and (3) lifting the handgun out of the holster while depressing the release tab for a certain portion of the withdrawal. 
     Another feature of one embodiment of the present invention is that the locking mechanism includes a generally U-shaped rod. The rod has a right side, a left side, and a joining piece, which together forms a U-shape. The joining piece passes through a pair of slots or notches in the inner and outer side of the holster, and the left and right side of the U-shaped rod are attached to the holster, but are configured to move laterally in relation to the holster, parallel with the long axis of the holster. Typically, they are attached to the holster by bosses or guides on the left and right hand side. Preferably, one spring is utilized on both sides of the U-shaped rod, which urge the U-shaped rod toward the rear of the holster. 
     When a handgun is inserted into the holster, the front of the handgun contacts the joining piece of the U-shaped rod. Continued pressure on the handgun pushes the U-shaped rod forward, and the joining piece moves in two slots on the front of the handgun. When the handgun is pressed down, the two springs on either side of the U-shaped rod are compressed, and when the handgun is released, these springs press the handgun toward the rear or open end of the holster. 
     Also attached to the U-shaped rod is a locking tab. The locking tab is preferably urged to rotate toward the barrel of the gun by attachment to one of the springs, which is around the right side of the U-shaped rod. In the open position, the release tab is pressed into the side of the holster by the first spring. When the U-shaped rod is pressed toward the front of the holster, the locking tab moves with it, and at a certain point clears the ejection port slot of the holster body, and is caused by the spring to pass through the ejection port slot of the holster, which at that time is also lined up with the ejection port of the handgun. This allows the locking tab to pass through the ejection port of the slide and to contact the barrel of the handgun. After contacting the barrel of the handgun, when the handgun is released, the springs push the U-shaped rod and the locking tab toward the rear of the holster, and the side of the locking tab presses against the side of the ejection port slot of the holster body. Different handguns have different configurations, and in other handguns another feature of the handgun, preferably a feature on the slide, would be engaged. Once the handgun is released, it is locked in place until the releasing means is activated. 
     The user activates the releasing means by pressing down on the handgun. This causes the U-shaped rod to move toward the front of the holster and also moves the locking tab laterally. When the locking tab is moved sufficiently toward the front of the holster, it becomes clear of the ejection port of the handgun and may be lifted away from the handgun by the user&#39;s thumb or finger pressing down on the release tab. When this happens, the handgun may be removed from the holster. While the handgun is being removed from the holster, the release tab may be pressed down for a portion of the withdrawal by the thumb and/or finger as it slides over the release tab toward the rear of the holster. 
     A significant feature of the holster is that one spring is utilized to accomplish two actions. The first action is to urge the U-shaped rod toward the rear of the holster, and thus urge the handgun out of the holster. The second action is that the same spring applies a rotating or torsional force to the locking tab and pushes it toward the handgun. 
     Another feature of the security holster of the present invention is that the surface of the holster has one or more inlay receiving regions. Each inlay-receiving region is basically a recess in the holster&#39;s surface, surrounded by a raised edge. Into each of these recesses, an adhesive backed inlay may be placed. These inlays are the same depth as the recess so that the inlay does not extend above the surface of the holster. Due to the inlay receiving regions, the inner wall of the recess surrounds each edge of each inlay, and no inlay edge is exposed to wear. The result of this is that the recesses protect the inlays from wear, and the inlays do not tend to peel up at the edges. The purpose of the inlays is to allow the holster to receive a decorative surface to match the requirements of any particular gun user. For instance, one particular police department may require a certain style or finish on the accessories that the officers carry. In this way, a plastic holster can be covered with a decorative surface pattern, such as basket weave, to match the other accessories being carried by a police office. The inlays can also contain the insignia of an organization or artwork preferred by any particular user. The inlays can also be of a color chosen by the user and may contain reflective material to make the holster more visible at night. 
     A feature of all embodiments is an optional detachable overlay, which can be snapped into place on the holster of the invention. The overlay forms a protective shield around the release tab, and thus is a finger tube into which a user must place a portion of his/her finger in order to access the release tab. In some embodiments the finger tube is not removable and formed in the region between the handgun and the holster body. This feature restricts access to the release tab, and makes release of the handgun difficult for anyone other than the wearer of the holster. 
     One embodiment of the invention includes a release tab on the left side of the handgun. In this version, a locking means is configured to admit the handgun into the security holster. It is also adapted to engage a handgun feature of the handgun placed in the inner cavity of the security holster, thereby preventing the withdrawal of the handgun prior to release of said locking means. 
     This embodiment includes a releasing means located adjacent to said left side handle of the handgun for releasing the locking means by movement of a user&#39;s right thumb or left hand index finger. The releasing means is a release tab that is configured for engagement with the user&#39;s right thumb when a right-handed user reaches for, releases, and removes the handgun from the holster. The release tab is operationally connected to a locking tab. The release tab is activated by pressure of a user&#39;s right thumb or left hand index finger, which disengages the locking tab from said handgun feature when said release tab is depressed. 
     This embodiment of the security holster includes a release ramp that lifts the locking tab out of the ejection port when the locking tab moves forward. The release is connected to the locking tab by a rod that passes from the left side of the handgun to the right side of the handgun. The rod has one or more springs attached to it, which urges the linking rod toward the rear of the holster and urges the locking tab into engagement with the ejection port. 
     Still other objects and advantages of the present invention will become readily apparent to those skilled in this art from the following detailed description wherein we have shown and described only the preferred embodiment of the invention, simply by way of illustration of the best mode contemplated by carrying out my invention. As will be realized, the invention is capable of modification in various obvious respects all without departing from the invention. Accordingly, the drawings and description of the preferred embodiment are to be regarded as illustrative in nature, and not as restrictive. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view of a preferred embodiment of the right-handed security holster. 
         FIG. 2  is a perspective view of the attachable overlay. 
         FIG. 3  is a rear view of an empty right-handed security holster. 
         FIG. 4  is an outer perspective view of the right-handed security holster loaded with a handgun with the attachable overlay removed to reveal the release and locking mechanism of this embodiment. 
         FIG. 5  is a perspective view of the U-shaped rod locking mechanism of a right-handed security holster. 
         FIG. 6  is a top view of the U-shaped locking mechanism of a right-handed security holster. 
         FIG. 7  is a view of the left side of a right-handed security holster loaded with a handgun, with the attachable overlay removed to reveal the release and locking mechanism. 
         FIG. 8  is an outer side view of the right-handed security holster loaded with a handgun with the attachable overlay removed to expose the release and locking mechanism. 
         FIG. 9  is a perspective view of a right-handed security holster loaded with a handgun with the attachable overlay removed and a cutaway showing the U bar mechanism, the security holster is fitted with inlays. 
         FIG. 10  is a perspective view of a left-handed security holster. 
         FIG. 11  is a partially cut away perspective view of the right-handed version of the holster of the invention. 
         FIG. 12  is a partially cut away perspective view of the left-handed version of the holster of the invention. 
         FIG. 13A  is a view of the right side of one embodiment of the invention. 
         FIG. 13B  is a view of the left side of one embodiment of the invention. 
     
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     While the invention is susceptible to various modifications and alternative constructions, certain illustrated embodiments thereof have been shown in the drawings and will be described below in detail. It should be understood, however, that there is no intention to limit the invention to the specific form disclosed, but, on the contrary, the invention is to cover all modifications, alternative constructions, and equivalents falling within the spirit and scope of the invention as defined in the claims. 
     The present invention is a security holster for use with a handgun that allows rapid insertion of the handgun and equally rapid withdrawal of the handgun. The security holster also provides a secure locking mechanism that secures the handgun in the holster until the user releases it. 
     Several preferred embodiments and features of the security holster are shown in  FIGS. 1-14 . The security holster shown in  FIG. 1  shows a perspective view of the general configuration of the security holster when used with a handgun  2 , and is designated as  10  in the figures. Preferably, the security holster is made of a tough and durable plastic such as Kydex (Mfg. By Kleerdex Company). A thickness of ⅛ inch of this material has been found to be suitable for making the security holster. Other materials or thicknesses of materials that have similar characteristics of rigidity, strength, and weight would also be suitable. This might include metal such as aluminum, steel, other types of plastics, or leather. The security holster  10  is not limited strictly to handguns. In additional embodiments, the security holster  10  may be adapted to holster additional devices such as stun guns, tools, or other instruments that could benefit from the features of the present invention. 
     The security holster  10  includes a holster body and an attachable overlay  12 . The attachable overlay  12  wraps either fully or partially around the holster body, and covers the locking and release mechanism. A belt mount  11  is also shown for mounting the security holster  10  to a user&#39;s belt. 
       FIG. 2  shows the attachable overlay by itself. The attachable overlay  12  allows a security holster  10  user to adapt the holster to expected conditions. If a user expects dangerous conditions, the attachable overlay  12  may be connected to the security holster  10 . In a preferred embodiment of the present invention, the attachable overlay is a molded part designed to snap onto the exterior of the security holster  10 . In additional embodiments, the attachable overlay  12  may include snaps, straps, or other mechanisms for securing the overlay to the security holster  10 . The attachable overlay  12  could easily be attached if a user felt the added protection necessary, and removed later as desired by the user. The attachable overlay  12  provides a protective shield or finger tube around the release mechanism of the security holster. In some embodiments the finger tube is not removable and formed in the region between the handgun and the holster body. The finger tube protects the release tab from activation by an assailant or from accidental activation by the wearer brushing against a building or rolling on the ground. 
       FIG. 3  is a rear view of the security holster without a handgun inserted. The attachable overlay  12  attaches to the holster body to form a finger tube or finger flare which is an opening or finger-receiving receptacle between the attachable overlay  12  and the holster body, which allows insertion of a user&#39;s index finger and serves to help the user position his/her finger on the release mechanism. By covering the locking and release mechanisms, the handgun  2  cannot easily be accidentally released when a user is lying on the holster, when it is bumped or rubbed against something, or is under attack by an assailant. 
     The release tab mechanism of the security holster  10  may be engaged when a user flexes a finger in the direction of the release mechanism. In a left-handed security holster  10 , the release may be engaged by a users thumb, as shown in  FIG. 10 . As used herein, any digit, finger, thumb, or other appendage inserted into the security holster for the purpose of releasing a handgun will generally be referred to as a finger, except in the specific use of a users thumb in a left-handed holster. In the preferred embodiment, release is accomplished by flexing the finger in a direction normal to the plane of the security holster and corresponding handgun against a release tab. Flexing is defined as the bending of a portion of a finger about a joint that allows the finger to apply pressure against a surface or mechanism. A release tab is positioned so that it can be released by a finger flexed in a single direction, which provides an additional safety feature. The tendons of a finger only allow a finger to be flexed in a direction toward the palm of the hand. As a result, an unauthorized person that is able to insert a finger in between the attachable overlay  12  and the holster body, would not be able to release the handgun by finger flexure. 
       FIG. 4  shows a perspective view of the right-handed security holster of the invention, loaded with a handgun with the attachable overlay removed to reveal the release and locking mechanism. In the preferred embodiment, the release tab  16  and the locking tab  18  are formed from a single piece of hardened plastic to form a lever  15 . The lever  15  of the present invention is a first class lever because the fulcrum is between the load and the effort force. In the present invention, the hinge connection (the fulcrum point rotating about a U bar  14 ) is a tube  46  and is between the locking tab  18  (the load) and the release tab  16  (effort force). 
     The lever  15  includes a release tab  16 , which is semicircular in cross section and fitted to receive the index finger of a user, and lies over the trigger and trigger guard of a handgun  2  when it is fully inserted into the security holster  10 . The release tab  16  is angled so that as a user inserts a finger between the attachable overlay  12  and the holster body, the finger slides up and onto the release tab for easy access. 
       FIG. 5  is a perspective view of the locking mechanism of the right-handed security holster. The locking tab  18  preferably has a pointed or ramped end  36  that facilitates locking and releasing the handgun. In the preferred embodiment, the locking tab  18  passes through an ejection port slot  38  defined in the holster body, in order to engage the ejection port of the handgun. The lever  15  preferably defines an inner cavity, or tube  46 , that is designed to function as a hinge or pivot point. The lever  15  pivots on a U bar or rod  14  with a right portion of the U bar  14  passing through the tube  46  defined by the lever  15 . The lever  15  is preferably biased by a torsion spring  24 . The torsion spring  24  biases the lever  15  so that the locking tab  18  is always pressing toward the holster body and handgun  2 . The same torsion spring  24  also biases the release tab  16 , pressuring it away from the holster body toward the attachable overlay when connected. 
     Another unique feature of one embodiment of the present invention is the previously mentioned U bar  14 .  FIG. 6  is a top view of the locking mechanism of the present invention. The U bar  14  has a right side  48 , a left side  50 , and a joining piece  52 , which together form a U-shape. The joining piece  52  passes through a pair of notches (left notch  54  and right notch  56 ) or aperture guides in the inner and outer side of the security holster  10  defined by the holster body, and the left and right side of the U bar  14  slidably passing through the notches  54  and  56  of the security holster and are configured to move laterally with relation to the holster, parallel with the long axis of the holster. 
     In one embodiment, the torsion spring  24  and compression spring  26  are held in place when positioned on the U bar  14 . The U bar  14  may have a pair of circular grooves near the ends of the sides  48  and  50  of the U bar. A snap ring  58  is fitted over each of the grooves in the U bar  14 . The compression spring  26  and the torsion spring  24  may be held in place by bushings  28  that are compressed out until they encompass and are fixed from moving by the snap rings. On the right side of the U bar  14  it is preferred that the torsion spring  24  is secured in the rear by a bushing abutted against the lever  15 . The lever  15  may be supported at the rearmost portion by a snap ring and corresponding bushing. The bushings  28  have various purposes. The ends of the springs rest on the bushings  28  and as a result the bushings  28  prevent the compression spring  26  and torsion spring  24  from making noise as they are compressed and moved, providing a low friction surface. The bushings also hold the springs from contacting the surface of the U bar as they are compressed. 
       FIG. 7  shows a perspective view of the left side of the security holster loaded with a handgun  2 , with the attachable overlay  12  removed to reveal the release and locking mechanism of this embodiment. Guides  20  and  22  are shown, and hold the U-shaped rod  14  against the holster body  8 . Typically, the left guide  20  and right guide  22  are molded into the body  8  of the security holster  10 . In an additional embodiment, the guides are attached to the holster  10  by bosses on the left and right hand side. Preferably, one spring is utilized on both sides of the U-shaped rod  14 , which urge the U-shaped rod  14  toward the rear  60  of the holster. The spring utilized on the inner or left side of the handgun  2  is preferably a compression spring  26  designed to provide the majority of the force exerted toward the front of the holster  10  on the U bar  14 . Multiple belt mounting apertures  34  are also shown for attaching the security holster  10  to a belt mount so that a user can effectively wear the holster  10 . 
       FIG. 8  is a side view of the right side of the security holster loaded with a handgun, with the attachable overlay  12  removed to expose the release and locking mechanism of this embodiment. The right spring  24  or outer spring, is preferably a torsion spring providing both torsion and compression characteristics for the specific reasons previously mentioned. When a handgun  2  is inserted into the holster  10 , the front of the handgun  2  contacts the joining piece  52  of the U bar  14 . The joining piece  52  of the U bar  14  is preferably equipped with a bumper  30  that prevents the handgun barrel from being marred, scratched or otherwise damaged due to constant contact with the joining piece  52 . The bumper  30  may be rubber, cloth or other material that would not cause damage to the handgun  2  during repeated contact. Continued pressure on the handgun  2  pushes the U bar  14  forward against the springs  24  and  26 , and the joining piece moves in two notches  54  and  56  defined in the holster body. When the handgun  2  is pressed down, the compression spring  26  and torsion spring  24  on either side of the U bar  14  are compressed, and when the handgun  2  is released, these springs press the handgun  2  toward the rear of the holster  10 . 
     Also pivotally mounted on the U bar  14  are the lever  15  and corresponding locking tab  18  and release tab  16 . The locking tab  18  is preferably urged to rotate toward the barrel of the handgun by attachment to the torsion spring  24 , which is positioned on the outer or right side of the U bar  14 . In the open position, the locking tab  18  is pressed into the side of the holster  10  by the torsion spring  24 . When the U bar  14  is pressed toward the front of the holster  10 , the locking tab  18  moves with it, and at a certain point clears the ejection port slot  38  of the holster  10 , and is caused by the torsion spring  24  to pass through the ejection port slot of the holster  10 , which at that time is also lined up with the ejection port of the handgun  2 . This allows the locking tab  18  to pass through the ejection port of the slide, and to contact the barrel of the handgun  2 . After contacting the barrel of the handgun  2 , when the handgun  2  is released, the springs  24  and  26  push the U bar  14  and the locking tab  18  toward the rear of the holster  10 , and the ramped end  36  of the locking tab  18  passes behind the holster body  8  until the side  62  of the locking tab  18  is pressed against the side of the ejection port slot  38 . Different handguns have different configurations, and in other handguns another feature of the handgun  2 , preferably a feature on the slide, would be engaged. Once the handgun is released, it is locked in place until the releasing mechanism is activated. 
     The releasing mechanism is activated by the user pressing down on the handgun  2  with a minimum compression or insertion force. This causes the U bar  14  to move toward the front of the holster  10  and also moves the locking tab  18  laterally, parallel to the long axis of the security holster  10 . When the locking tab  18  is moved sufficiently toward the front of the holster  10 , the ramped end  46  comes clear of the ejection port of the handgun  2 , and the locking tab  18  may be lifted away from the handgun by the user&#39;s finger pressing down on the release tab  16 . As soon as the ramped end  36  of the locking tab  18  is past the ejection port slot  38 , the release tab need not be held down anymore. When this happens, the handgun  2  may be removed from the holster  10 . While the handgun  2  is being removed from the holster  10 , the release tab  16  may be pressed down for a portion of the withdrawal by the finger as it slides over the release tab  16  toward the rear of the holster  10 . 
     A significant feature of the holster is that the torsion spring  24  is utilized to accomplish two actions. The first action is to urge the U bar toward the rear of the holster  10 , and thus urge the handgun  2  out of the holster  10 . The second action is that the torsion spring  24  applies a rotating or torsional force to the locking tab  18  and pushes it toward the handgun while at the same time pushing the release tab  16  away from the handgun  2  as part of the lever  15  connected to the two tabs. 
     Another unique feature of one embodiment of the security holster  10  is that the locking mechanism does not contact the slide of the handgun as the handgun  2  is inserted into the holster  10 . This is a benefit because it means that there is less wear and tear on the handgun  2  and on the security holster  10 . This is accomplished because the locking tab  18  rests against the outside of the security holster  10  until the locking tab  18  is moved laterally, at which time the torsion spring  24  causes the locking tab  18  to rotate down through an ejection port slot  36  defined by the holster body  8  to engage the ejection port of the handgun  2 . Lateral movement of the locking tab  18  is caused by downward pressure from the handgun  2  on the interconnected U bar  14 . Similarly, to release the handgun  2 , downward pressure of the handgun  2  is required so that the locking tab  18  again moves laterally and clears the ejection port slot  36  of the holster and may be raised away from the handgun  2  by pressing the release tab  16 . 
     Returning again to  FIG. 1 , a perspective view of the right-handed security holster. Another feature of the security holster  10  of the present invention is that the holster body or attachable overlay  12  has or defines one or more inlay receiving regions  40 . Each inlay-receiving region  40  is basically a recess in the holster&#39;s surface that is surrounded on the edges by an inner wall  42 . The inlay receiving regions are the same depth as an inlay or deeper so that the inlay does not extend above the inner walls  42 . 
       FIG. 9  is a perspective view of a right-handed security holster fitted with inlays and an inserted handgun. Due to the inlay receiving regions  40 , the inner wall  42  of the recess surrounds each edge of the inlay  44 , and no inlay  44  edges are exposed to wear. The result of this is that the inlay receiving regions, used in conjunction with the inner wall  42 , protects the inlays  44  from wear, and the inlays  44  do not tend to peel up at the edges. Into each of these recesses, an adhesive backed inlay  44  or other type of inlay  44  may be placed, glued, or fixed. These inlays  44  are the same depth as the recess or slightly less deep so that the inlay  44  does not extend above the surface of the holster. The purpose of the inlays  44  is to allow the holster to receive a decorative surface or insignia to match the requirements of any particular handgun user. For instance, one particular police department may require a certain style or finish on the accessories that the officers carry. In this way, a plastic holster can be covered with a decorative surface pattern, such as basket weave, to match the other accessories being carried by a police office. The inlays  44  may also contain the insignia of an organization or artwork preferred by any particular user. The inlays  44  may be of a color chosen by the user and may contain reflective material to make the holster more visible at night. 
     One embodiment of the holster is specifically for left-handed users of a semi-automatic handgun.  FIG. 10  is a perspective view of a left-handed security holster. It includes a holster body. The holster body includes inner and outer rigid sidewalls that are spaced apart to define an inner cavity. The inner cavity has an open top portion into which the handgun  2  is inserted. The top portion is also identified as the rear of the holster. The portion of the holster that is adjacent to the end of the handgun barrel is designated as the front or bottom of the holster. The holster  10  also includes a locking mechanism, which is designed to allow the handgun to pass by it. When the handgun  2  is seated in the holster, the locking mechanism engages a feature of the handgun  2 , thereby preventing the withdrawal of the handgun  2  prior to the release of the locking mechanism. 
     The security holster  10  also includes a releasing mechanism, which is mounted so that when a handgun  2  is inserted within the holster  10 , the releasing mechanism is adjacent the right side of the handle of the handgun  2 . In the left-handed version of the holster  10 , the releasing mechanism is configured for activation by movement of a user&#39;s left thumb. The releasing mechanism is a release tab  16  that is depressed by a user&#39;s left thumb as he/she reaches for the handgun  2 . When the user&#39;s hand is on the handle of the handgun  2 , the release tab  16  is positioned directly below his/her thumb over the right side of the handgun handle. The release tab  16  is operationally connected to a locking tab  18 , and when the release tab  16  is pressed down, the locking tab  18  disengages from the handgun feature and allows the handgun  2  to be withdrawn. As with the right-handed version previously described, the left handed security holster  10  shown if  FIG. 10  operates in essentially the same fundamental way. The largest differences are that the release tab  16  is between the user and the rest of the holster as opposed to the right-handed version. The release tab  16  is also elongated to accommodate the user&#39;s thumb. Although available for use in left-handed holsters, the need for an attachable overlay is not as great. This is because the release mechanism is more naturally protected between the user and the rest of the holster from attack and some other similar circumstances. 
     This embodiment includes a releasing mechanism located adjacent to said left side handle of the handgun for releasing the locking mechanism by movement of a user&#39;s right thumb or left hand index finger. The releasing mechanism is a release tab  16  that it is configured for engagement with the user&#39;s right thumb when a user reaches for, releases, and removes the handgun  2  from the holster  10 . The release tab  16  is operationally connected to a locking tab  18 . The release tab  16  is activated by pressure of a user&#39;s right thumb or left hand index finger, which disengages the locking tab  18  from said handgun feature when said release tab is depressed. 
     This embodiment of the security holster includes a ramp that lifts the locking tab  18  out of the ejection port when the locking tab  18  moves forward. The release is connected to the locking tab  18  by a U bar  14  that passes from the left side of the handgun to the right side of the handgun. The rod has one or more springs attached to it, which urges the rod toward the rear of the holster and urges the locking tab into engagement with the ejection port. 
     Both the left and right-handed version of the holster provide for one-handed insertion of the handgun  2  into the security holster  10 . When a handgun  2  is pressed into the holster  10 , the locking tab  18  engages a handgun feature such as a trigger guard, the slide, or preferably an ejection port. This engagement prevents the handgun  2  from being withdrawn until the release tab  16  is engaged by the user&#39;s left thumb. 
     The locking tab  18  is a generally planar projection that extends from an arm connected to the release tab  16 . The locking tab  18  is configured to move from an open position that allows entry of the handgun  2  without the handgun  2  touching the locking tab  18  into a closed position in which the locking tab  18  engages a feature of the handgun  2 . The locking tab  2  can be activated to move into engagement with the handgun feature, such as the ejection port by compression of one or more springs built into the holster  10 . Preferably, the locking tab  18  passes through the ejection port on the slide of the semi-automatic handgun and locks under the ejection port on the slide, adjacent the barrel of the handgun. Alternatively, any feature of the slide could also be utilized because not all models of handguns have a space under the ejection port that can be utilized. Once engaged, the locking tab  18  is typically pressed into engagement with the handgun feature by a spring, which is compressed during insertion into the holster  10 . 
     The release tab  16  of the holster is typically an elongated tray, which is configured for sliding engagement with the user&#39;s left thumb. The elongated tray extends from over the trigger guard to partially over the handle of the handgun, which allows the left-handed user to activate the release tab  16  with his/her left thumb. 
     Another feature of this configuration of the device is that the locking tab  18  engages the handgun feature with an audible indication of locking. This is typically a distinctive click, which in most environments can easily be heard and is a certain indication to the user that the handgun is engaged in the holster. The locking tab engages with sufficient force so that there is also a tactile indication of locking, which the user may feel through the handle of the handgun or through the body of the holster into his/her hip region. This version of the holster typically includes a rotationally biased locking tab  18  that is biased toward the handgun  2 , which activates the locking mechanism when the handgun is pressed into the holster with a required minimum compression force. The minimum compression force also operates with the releasing mechanism, and a minimum degree of compression force is required before the handgun is released. 
     A distinctive feature of the holster  10  is that one action is utilized to seat the handgun  2  and secure it in the holster  10 . This action is pressing the handgun  2  down. Seating it in the locking mechanism of the holster  10  is clearly indicated by an audible click of the locking tab  18 , and can also be felt through the user&#39;s hand or holster  10 . Three actions are required to remove the handgun  2  from the holster  10 . These three actions are: (1) pushing the handgun  2  down, (2) depressing the release tab  16  so that the locking tab  18  is disengaged from the ejection port, and (3) lifting the handgun out of the holster while depressing the release tab  16  for a certain portion of the withdrawal. 
       FIG. 11  shows a partially cut away rear view of the holster of the invention. A portion of the holster that is partially cut away is the attachable overlay  12 , which forms a protective finger tube around the release tab  16 . 
       FIG. 12  is a partially cut away rear perspective view of a left-handed version of the invention. In this version of the invention, as in  FIG. 11 , the release tab  16  is on the right side of the holster body  8 . The release tab in this position is worn on the left side of a user&#39;s body, which allows a left-handed user to utilize his/her thumb to activate the release tab  16 . In other respects, this version of the holster is consistent with versions previously described. 
       FIG. 13A  is a view of the right side of another embodiment of the holster. On the right side of the holster is located a release ramp  84 . This version utilizes a modified U-shaped rod  70 , which has a right leg  72 , a left leg  74  (shown in  FIG. 13B ), and a bridge section  76 . Both the left leg  74  and the right leg  72  are attached to the holster body  8  by guides  78 . In this version, the left leg  74  and right leg  72  each have a compression spring  80 . The spring  80  operates as both a compression spring and a torsion spring. One end of it is attached to a locking tab  18 , and causes it to be biased towards the holster body  8 . Thus, the locking tab  18  is continually urged toward the ejection port slot  38 . 
       FIG. 13B  shows that attached to the left leg  74  is a thumb bar  82 . This is an angled surface, which is attached to the holster body  8 . In this version of the security holster, several components are rigidly attached to each other and move as one unit. When the user presses on the thumb bar  82 , the entire modified U-shaped rod  70  moves towards the barrel end of the holster. When this happens, the locking tab  18  (shown in  FIG. 13A ) also moves in that direction as the locking tab  18  encounters the release ramp  84  (shown in  FIG. 13A ), it rides up over the release ramp  84  (shown in  FIG. 13A ) and is lifted away from the handgun and out of the ejection port slot  38  (shown in  FIG. 13A ) of the security holster  10 . The locking tab  18  is attached to the right leg  72  of the modified U-shaped rod  70 , but it is able to rotate around that rod, which allows it to lift up away from the handgun, and also to drop down in place in the ejection port of the handgun. 
     From the foregoing description, it will be apparent that various changes may be made without departing from the spirit and scope of the invention as defined by the following claims. While there is shown and described the present preferred embodiment of the invention, it is to be distinctly understood that this invention is not limited thereto but may be variously embodied to practice within the scope of the following claims.