The deceleration chamber may further include an inlet and inner curved surface for receiving the projectile wherein the velocity of the projectile is reduced by contact with the inner surface. The deceleration chamber may further include an exit for decelerated projectiles.
An embodiment of the trap chamber may further including a projectile retrieval system. In addition, the projectile trap may include at least one secondary support to support the projectile trap. In certain embodiments, the projectile trap further includes an air injection system and an air collection system positioned downstream of the air injection system for receiving at least a portion of the air from the air injection system.
The air injection system includes an air supply and at least one air outlet, where the air outlet may include a plurality of spaced apart air outlets, whereby the plurality of spaced apart air outlets are slots. At least one of these air outlets is oriented towards the trap chamber. The air collection system includes at least one air inlet, where at least one air inlet includes a plurality of spaced apart air inlets, whereby the plurality of spaced apart air inlets are slots.
At least one air inlet is oriented towards the trap chamber. The air collection system also includes at least one exhaust fan and may include at least one air filter.
In addition, the operating CFM of the air collection system is greater than or equal to the operating CFM of the air injection system. Accordingly, one aspect of the present invention is to provide a shooting range including: a at least one shooting station; and b at least two projectile traps joined together along adjacent ends wherein the front edge of the joint between the projectile traps includes a backwardly transposed portion substantially out of view from the shooting station.
Another aspect of the present invention is to provide an improved projectile trap for a shooting range having at least one shooting station including: a at least two projectile trap subassemblies each having at least one end plate and joined together along adjacent end plates; and b a trap chamber in each of the projectile trap subassemblies, wherein a portion of the front edge of the joint between the projectile trap subassemblies is transposed into the trap chambers substantially out of view from the shooting station.
Still another aspect of the present invention is to provide a shooting range including: a at least one shooting station; b a projectile trap including i at least two projectile trap subassemblies each having at least one end plate and joined together along adjacent end plates and ii a trap chamber in each of the projectile trap subassemblies, wherein a portion of the front edge of the joint between the projectile trap subassemblies is transposed into the trap chambers substantially out of view from the shooting station; and c at least one range auxiliary system.
These and other aspects of the present invention will become apparent to those skilled in the art after a reading of the following description of the preferred embodiment when considered with the drawings. In the following description, like reference characters designate like or corresponding parts throughout the several views. Referring now to the drawings in general and FIG. As best seen in FIG.
The shooting range 10 includes an administrative facility 28 which may include a safety area where firearms may be inspected and readied. In addition, range management may have offices adjacent or in the safety area. Limited access to the shooting range 10 may be provided by additional fencing and supplemented, in part, by a containment system, generally designated The shooting station 12 may include one or more of a firing position 18 and a shooting booth 20 that may optionally include a weapon rest 24 and or a lane divider In an embodiment of the projectile trap 14 , the chamber 30 includes an inlet 33 and an inner curved surface 36 for receiving a projectile and reducing its velocity through contact with the surface In a further embodiment, the trap chamber includes a trap guide 26 for directing projectiles into projectile trap 14 and protecting the front portions of the projectile trap This trap guide 26 may be formed by a pair of opposing ramps as shown with upper ramp 29 and lower ramp In an embodiment, the projectile trap may also include a seam protector 64 for deflecting projectiles away from the intersection of the exposed and displaced seam surface formed by the junction of adjoining projectile traps.
The trap chamber may also include an exit 70 for decelerated projectiles. In this embodiment, the shooting range further includes a secondary support 66 to support portions of the trap chamber. This secondary support may be used to provide substantial support to allow the trap chamber to be free standing and not require overhead support.
In an embodiment of the projectile trap 14 , the chamber 30 includes an inlet 33 and an inner curved surface 36 for receiving a projectile and reducing its velocity through contact with the inner curved surface The injection system 32 shown may include an air supply 38 , air inlets, such as the inlet 42 , which is shaped as a slot and oriented toward the chamber 30 , and air outlets, such as the outlet 40 , which is also shaped as a slot and is also oriented towards the chamber The collection system 34 may optionally include an exhaust fan 44 having an operating CFM equal to or greater than that of an injection fan 46 to aid in controlling the direction and velocity of the air from the air injection system.
In this embodiment, the projectile trap further includes a trap guide The guide 26 may be a pair of opposed ramps 27 and In an embodiment of the projectile trap, the trap chamber 30 includes an inlet 33 and an inner curved surface 36 for receiving a projectile and reducing its velocity through contact with the inner curved surface The projectile trap may further include a seam protector As shown, the end plates 8 on the projectile traps 14 may provide support.
In particular, the end plates 8 may provide support at the distal ends of the projectile traps The projectile traps 14 may include the curved surface 36 , typically for receiving a projectile and reducing its velocity through contact with the surface Typically, the end plates 8 provide support for each projectile trap In particular embodiments, the end plates 8 provide support at the distal ends of each trap Similarly, FIGS.
Typically, a portion of the front end of the joint 18 formed by joining together adjacent plates 8 may be transposed into trap camber In this particular embodiment, the transposed portion of the front edge of the joint 18 between the projectile traps 14 is the portion that is typically not protected by the trap guide In one embodiment, the projectile trap 14 may also include a trap guide 26 wherein the injection system 32 is adjacent the guide 26 and the collection system 34 is upstream of the chamber In addition, the trap chamber may further include an exit 70 for decelerated projectiles.
In an alternative embodiment, the trap may further include a projectile retrieval system 72 for disposing of fired projectiles. Certain modifications and improvements may occur to those skilled in the art upon a reading of the foregoing description. By way of example, while the shooting range shown includes a circular projectile deceleration chamber, other types of traps could be used, including, without limitation, the kind having an impact plate design.
It should also be apparent that any rounded shape could be used as a projectile trap and the invention is not limited to just circular one sided shapes.
Also, the deceleration chamber could be made from a series of plates having flat faces, such as shown in U. Thus, a marksman aiming at a closer target must lower his aim point to an aim point or dot slightly above the horizontal crosshair e. It will be noted that the spacing between each horizontal row e.
The alignment and spacing of the horizontal rows more effectively compensates for these factors, such that the vertical impact point of the bullet will be more accurate at any selected range. After row U, for yards, the rows are no longer numbered, as a reminder that beyond that range, it is estimated that the projectile has slowed into the transonic or subsonic speed range, where accuracy is likely to diminish in an unpredictable manner.
The nearly vertical columns A, B, A, B, etc. These nearly vertical columns define aligned angled columns or axes of aim points configured to provide an aiming aid permitting the shooter to compensate for windage, i. As noted above, downrange crosswinds will have an ever greater effect upon the path of a bullet with longer ranges.
Accordingly, the vertical columns spread wider, laterally, at greater ranges or distances, with the two inner columns A and A being closest to the column of central aiming dots and being spaced to provide correction for a five mile per hour crosswind component, the next two adjacent columns B, B providing correction for a ten mile per hour crosswind component, etc.
These lead indicators A and B are approximate, with the exact lead depending upon the velocity component of the target normal to the bullet trajectory and the distance of the target from the shooter's position. As above, in order to use the elevation and windage aim point field of FIGS. This is provided by means of the evenly spaced horizontal and vertical angular measurement stadia disposed upon aim point field The stadia comprise a vertical row of stadia alignment markings A, B, etc.
It will be noted that the horizontal markings A, etc. Each adjacent mark, e. Other angular definition may be used as desired, e. Any system for defining relatively small angles may be used, so long as the same system is used consistently for both the stadia and the distance v. Referring to FIGS. For example, a shooter or hunter may note that the game being sought e. The hunter knows or recognizes that the posts are about four feet tall, from prior experience. Alternatively, he could estimate some dimension of the game, e.
The hunter places the top of a post P shown in broken lines along the vertical marks A, B within the fractional mil marks of the stadia , and adjusts the alignment of the firearm and scope vertically to place the base of the post P upon a convenient integer alignment mark, e. The hunter then knows that the post P subtends an angular span of one and three quarter mils, with the base of the post P resting upon the one mil mark B and the top of the post extending to the third of the quarter mil marks The horizontal mil marks A, etc.
It should be noted that each of the stadia markings and comprises a small triangular shape, rather than a circular dot or the like, as is conventional in scope reticle markings. The polygonal stadia markings of the present system place one linear side of the polygon preferably a relatively flat triangle normal to the axis of the stadia markings, e.
This provides a precise, specific alignment line, i. Conventional round circles or dots are subject to different procedures by different shooters, with some shooters aligning the base or end of the object with the center of the dot, as they would with the sighting field, and others aligning the edge of the object with one side of the dot.
It will be apparent that this can lead to errors in subtended angle estimation, and therefore in estimating the distance to the target. Referring back to FIG. Each of the density correction drop pointers e. Aim point field also includes aim points having correction pointers with an interior triangle graphic inside the correction drop pointer e. Reticle of FIG. Air density affects drag on the projectile, and lower altitudes have denser atmosphere. At a given altitude or elevation above sea level, the atmosphere's density decreases with increasing temperature.
The crosswind XW values to the left of the DA graph indicate the wind hold dot or triangle value at the corresponding DA for the shooter's location.
The mph rows of correction drop pointers in aim point field are used to find corresponding corrections for varying rifle and ammunition velocities. Velocity variations for selected types of ammunition can be accounted for by selecting an appropriate DA number. This means that family of reticles is readily made available for a number of different bullets.
It has been discovered that the bullet's flight path will match the reticle at the following combinations of muzzle velocities and air densities:.
Thus, the reticle's density correction graphic indicia array can be used with Density Altitude Graph to provide the user with a convenient method to adjust or correct the selected aim point for a given firing solution when firing using different types of ammunition or in varying atmospheric conditions with varying air densities.
In accordance with the method and system of the present invention, each user is provided with a placard or card for each scope which defines the bullet path values come-ups at yard intervals.
When the user sets up their rifle system, they chronograph their rifle and pick the Density Altitude which matches rifle velocity. Handloaders have the option of loading to that velocity to match the main reticle value. The scope legend, viewed by zooming back to the minimum magnification, shows the model and revision number of the reticle from which can be determined the main conditions which match the reticle.
Experienced long range marksmen and persons having skill in the art of external ballistics as applied to long range precision shooting will recognize that the present invention makes available a novel ballistic effect compensating reticle system e. In the illustrated embodiments, the ballistic effect compensating reticle e.
The ballistic effect compensating reticle e. In the illustrated embodiment, each sloped row of windage aiming points includes windage aiming marks positioned to compensate for leftward and rightward crosswinds of 10 miles per hour and 20 miles per hour at the range of the secondary aiming point corresponding to said sloped row of windage aiming points, and at least one of the sloped row of windage aiming points is bounded by laterally spaced distance indicators.
Preferably, at least one of the windage aiming points is proximate an air density or projectile ballistic characteristic adjustment indicator such as those arrayed in density correction indicia array , and the air density or projectile ballistic characteristic adjustment indicator is preferably a Density Altitude DA correction indicator.
Generally, the ballistic effect compensating reticle e. The primary aiming mark e. The primary horizontal sight line includes preferably a bold, widened portion L and R located radially outward from the primary aiming point, the widened portion having an innermost pointed end located proximal of the primary aiming point.
The ballistic effect compensating reticle preferably also has a set of windage aiming marks spaced apart along the primary horizontal sight line to the left and right of the primary aiming point to compensate for target speeds corresponding to selected leftward and rightward velocities, at the first selected range.
Ballistic effect compensating reticle aim point field e. Thus the third windage offset distance is greater than or lesser than the fourth windage offset distance, where the windage offset distances are a function of or are determined by the direction and velocity of the projectile's stabilizing spin or a rifle barrel's rifling twist rate and direction, thus compensating for the projectile's Dissimilar Wind Drift.
The ballistic effect compensating reticle has the third windage offset distance configured to be greater than the fourth windage offset distance, and the windage offset distances are a function of or are determined by the projectile's right hand stabilizing spin or a rifle barrel's rifling right-twist direction, thus compensating for said projectile's Dissimilar Wind Drift.
Broadly speaking, the ballistic effect compensating reticle system e. The ballistic effect aim compensation method for use when firing a selected projectile from a selected rifle or projectile weapon e. The ballistic effect aim compensation method of the present invention includes providing ballistic compensation information as a function of and indexed according to an atmospheric condition such as density altitude for presentation to a user of a firearm, and then associating said ballistic compensation information with a firearm scope reticle feature to enable a user to compensate for existing density altitude levels to select one or more aiming points displayed on the firearm scope reticle e.
The ballistic compensation information is preferably encoded into markings e. In the illustrated embodiments, the ballistic compensation information comprises density altitude determination data and a ballistic correction chart indexed by density altitude. The ballistic effect aim compensation system to adjust the point of aim of a projectile firing weapon or instrument firing a selected projectile under varying atmospheric and wind conditions e.
The system preferably includes a means for determining existing density altitude characteristics such as DA graph either disposed on the reticle or external to the reticle; and also includes ballistic compensation information indexed by density altitude criteria configured to be provided to a user or marksman such that the user can compensate or adjust an aim point to account for an atmospheric difference between the baseline atmospheric condition and an actual atmospheric condition; wherein the ballistic compensation information is based on and indexed according to density altitude to characterize the actual atmospheric condition.
Preferably, the ballistic compensation information is encoded into the plurality of aiming points disposed upon the reticle, as in FIGS. Preferably, the reticle also includes ballistic compensation indicia disposed upon the reticle and ballistic compensation information is encoded into the indicia as shown in FIG. The ballistic compensation information may also be encoded into the plurality of aiming points disposed upon said reticle e. Having described preferred embodiments of a new and improved reticle and method, it is believed that other modifications, variations and changes will be suggested to those skilled in the art in view of the teachings set forth herein.
It is therefore to be understood that all such variations, modifications and changes are believed to fall within the scope of the present invention as set forth in the following claims. I claim: 1. A ballistic effect compensating reticle for rifle sights or projectile weapon aiming systems adapted to provide a field expedient firing solution for a selected projectile, comprising: a a multiple point elevation and windage aim point field including a primary aiming mark indicating a primary aiming point adapted to be sighted-in at a first selected range;.
The ballistic effect compensating reticle according to claim 1 , wherein said first array of windage aiming marks define a sloped row of windage aiming points having a negative slope which is a function of the right-hand spin direction for said projectile's stabilizing spin or a rifle barrel's right-hand twist rifling, thus compensating for said projectile's crosswind jump. The ballistic effect compensating reticle according to claim 1 , wherein each secondary aiming point is intersected by a secondary array of windage aiming marks defining a sloped row of windage aiming points having a slope which is a function of the direction and velocity of said projectile's stabilizing spin or a rifle barrel's rifling twist rate and direction, wherein said sloped row of windage aiming points are spaced for facilitating aiming compensation for ballistics and windage for two or more preselected incremental crosswind velocities, at the range of the corresponding secondary aiming point.
The ballistic effect compensating reticle according to claim 3 , wherein each sloped row of windage aiming points includes windage aiming marks positioned to compensate for leftward and rightward crosswinds of 10 miles per hour and 20 miles per hour at the range of the secondary aiming point corresponding to said sloped row of windage aiming points.
The ballistic effect compensating reticle according to claim 1 , wherein at least one of the sloped row of windage aiming points is bounded by laterally spaced distance indicators. The ballistic effect compensating reticle according to claim 5 , wherein at least one of the windage aiming points is proximate an air density or projectile ballistic characteristic adjustment indicator. The ballistic effect compensating reticle according to claim 5 , wherein said air density or projectile ballistic characteristic adjustment indicator is a Density Altitude DA correction indicator.
The ballistic effect compensating reticle according to claim 1 , wherein said nearly vertical array of secondary aiming marks indicating corresponding secondary aiming points along a curving, nearly vertical axis are curved in a direction that is a function of the direction of said projectile's stabilizing spin or a rifle barrel's rifling direction, thus compensating for spin drift.
The ballistic effect compensating reticle according to claim 1 , wherein the primary aiming mark is formed by an intersection of a primary horizontal sight line and said nearly vertical array of secondary aiming marks indicating corresponding secondary aiming points along said curving, nearly vertical axis. The ballistic effect compensating reticle according to claim 9 , wherein the primary horizontal sight line includes a widened portion located radially outward from the primary aiming point, the widened portion having an innermost pointed end located proximal of the primary aiming point.
The ballistic effect compensating reticle according to claim 10 , further comprising a set of windage aiming marks spaced apart along the primary horizontal sight line to the left and right of the primary aiming point to compensate for target speeds corresponding to selected leftward and rightward velocities, at the first selected range. The ballistic effect compensating reticle according to claim 1 , wherein said aim point field also includes a second array of windage aiming marks spaced apart along a second non-horizontal axis intersecting a second selected secondary aiming point; wherein said second array of windage aiming marks includes a third windage aiming mark spaced apart to the left of the vertical axis at a third windage offset distance from the vertical axis selected to compensate for right-to-left crosswind of the preselected first incremental velocity at the range of said second selected secondary aiming point, and.
The ballistic effect compensating reticle according to claim 12 , wherein said aim point field also includes a third array of windage aiming marks spaced apart along a third non-horizontal axis intersecting a third selected secondary aiming point; wherein said third array of windage aiming marks includes a fifth windage aiming mark spaced apart to the left of the vertical axis at a fifth windage offset distance from the vertical axis selected to compensate for right-to-left crosswind of the preselected first incremental velocity at the range of said third selected secondary aiming point, and.
The ballistic effect compensating reticle according to claim 1 , wherein said aim point field's first array of windage aiming marks spaced apart along the second non-horizontal axis includes a third windage aiming mark spaced apart to the left of the vertical axis at a third windage offset distance from the first windage aiming mark selected to compensate for right-to-left crosswind of twice the preselected first incremental velocity at the range of said second selected secondary aiming point, and a fourth windage aiming mark spaced apart to the right of the vertical axis at a fourth windage offset distance from the second windage aiming mark selected to compensate for left-to-right crosswind of twice said preselected first incremental velocity at said range of said selected secondary aiming point;.
The ballistic effect compensating reticle according to claim 14 , wherein said third windage offset distance is greater than said fourth windage offset distance, said windage offset distances being a function of said projectile's right hand stabilizing spin or a rifle barrel's rifling right-twist direction, thus compensating for said projectile's dissimilar wind drift.
The ballistic effect compensating reticle according to claim 1 , wherein said aim point field is configured to compensate for the selected projectile's ballistic behavior while developing a field expedient firing solution expressed in two-dimensional terms of a range or distance, used to orient a field expedient aim point vertically among the secondary aiming marks in said vertical array, and.
USP true Ballistic effect compensating reticle and aim compensation method with leveling reference and spin-drift compensated wind dots.
Ballistic effect compensating reticle and aim compensation method with sloped mil and MOA wind dot lines. Reticle and ballistic effect compensation method having gyroscopic precession compensated wind dots. Ballistic effect compensating reticle, aim compensation method and adaptive method for compensating for variations in ammunition or variations in atmospheric conditions.
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Reticle and scopes equipped therewith, firearm therewith and method of hitting a target with a projectile. USA en. Range finder to continuously determine range utilizing a reticule having indicia. Method and apparatus for automatic ranging with variable power telescopic gun sight. Method and equipment for training personnel in the optical tracking of a moving target. GBB en. Variable-power riflescope with range-compensating reticle and a field stop diaphram centered off the optical axis.
Microcomputer-controlled optical apparatus for surveying, rangefinding and trajectory-compensating functions. USDS en. DEC2 en. Microcontroller operated optical apparatus for surveying rangefinding and trajectory compensating functions. USHH en. Reticle plate and method for establishment of a north-oriented or south-oriented line by circumpolar orientation. DEA1 en. Microcontroller-controlled device for surveying, rangefinding and trajectory compensation.
Apparatus and method for displaying and storing impact points of firearm projectiles on a sight field of view. Microcomputer device with triangulation rangefinder for firearm trajectory compensation. Alignment of optical elements in telescopes using a laser beam with a holographic projection reticle. DEU1 en. USB1 en. Most recent. Available for Subscriptions. Add to Alert PDF. Please first log in with a verified email before subscribing to alerts. Please first verify your email before subscribing to alerts.
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