U.S. patent application number 16/375790 was filed with the patent office on 2020-01-23 for boresighter trainer for gun.
The applicant listed for this patent is Crimson Trace Corporation. Invention is credited to Aaron Moore, Larry E. Moore.
Application Number | 20200025503 16/375790 |
Document ID | / |
Family ID | 66326963 |
Filed Date | 2020-01-23 |
United States Patent
Application |
20200025503 |
Kind Code |
A1 |
Moore; Larry E. ; et
al. |
January 23, 2020 |
BORESIGHTER TRAINER FOR GUN
Abstract
A boresighter/trainer fits into a distal end of a gun barrel and
includes a sound sensor, a circuit, a laser, and a power source.
The boresighter/trainer has at least two operational modes: one in
which it continuously emits laser light and one in which it emits
laser light for a short duration when the sound of a firing pin is
detected. When in its first mode, the boresighter/trainer permits
laser light to be projected along the longitudinal axis of a gun
barrel in which it is portioned, for the purpose of aligning a
sight on the firearm. When the boresighter/trainer is in its second
mode and the firing pin of the gun is activated, the sound of the
firing pin is detected by the sound sensor and activates a circuit
in the boresighter/trainer to cause the light source to emit light
along the longitudinal axis of the firearm barrel. The
boresighter/trainer may have multiple bore adapters that fit
different firearm bore diameters.
Inventors: |
Moore; Larry E.;
(Cottonwood, AZ) ; Moore; Aaron; (Cottonwood,
AZ) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Crimson Trace Corporation |
Wilsonville |
OR |
US |
|
|
Family ID: |
66326963 |
Appl. No.: |
16/375790 |
Filed: |
April 4, 2019 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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15804229 |
Nov 6, 2017 |
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16375790 |
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14963475 |
Dec 9, 2015 |
10436553 |
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15804229 |
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14459274 |
Aug 13, 2014 |
9297614 |
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14963475 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F41G 1/545 20130101;
F41A 33/02 20130101; F41G 3/323 20130101 |
International
Class: |
F41A 33/02 20060101
F41A033/02; F41G 1/54 20060101 F41G001/54; F41G 3/32 20060101
F41G003/32 |
Claims
1. A boresighter/trainer configured for use within a gun barrel of
a gun, the gun barrel with a first end having a firing chamber and
a second end, the boresighter/trainer comprising: (a) a body having
an axis, a proximal end, a distal end configured to be inserted
into the second end of the gun barrel, and a seating portion
between the proximal end and the distal end, the seating portion
configured to form a first contact area with an inner surface of
the gun barrel; (b) a bore adapter attached to the distal end, the
bore adaptor having a variable adapter diameter and configured to
form a second contact area with the inner surface of the gun
barrel; (c) a fastener attaching the bore adapter to the distal
end, the fastener configured to apply force to the bore adapter;
(d) a light source in the housing to emit a light beam aligned with
the body axis; (e) a power source, (f) a sound sensor to detect the
sound of a firing pin strike of the gun, and to activate a circuit
in response, wherein when the circuit is activated, the power
source provides power to the light source and the light source
emits light; and (g) a switch, wherein the switch has a first
position in which the boresighter/trainer is in a first mode
whereby it constantly emits light, and the switch has a second
position in which the boresighter/trainer is in a second mode
whereby it emits light for a short duration when the sensor detects
the sound of the firing pin strike, wherein when in the first mode,
the boresighter/trainer permits laser light to be projected along a
longitudinal axis of the gun barrel in which it is portioned, for
aligning a sight on gun and wherein when the boresighter/trainer is
in the second mode and the firing pin activated, the sound of the
firing pin is detected by the sound sensor and activates the
circuit in the boresighter/trainer to cause the light source to
emit light along the longitudinal axis of the gun barrel.
2. The boresighter/trainer of claim 1, wherein the circuit includes
a capacitor.
3. The boresighter/trainer of claim 1, wherein the bore adapter
includes deformable members defining the variable adapter diameter,
wherein the deformable members deform in response to force applied
by the fastener.
4. The boresighter/trainer of claim 1, wherein the power source is
one or more batteries.
5. The boresighter/trainer of claim 5, wherein the power source
includes three batteries.
6. The boresighter/trainer of claim 1, wherein the light source is
a laser.
7. The boresighter/trainer of claim 6, wherein the laser is
activated for between about 7.5 to about 12.5 milliseconds, or
about 0.1 seconds, when the circuit is activated.
8. The boresighter/trainer of claim 1, wherein the circuit is a 4.5
V system.
9. The boresighter/trainer of claim 1, wherein the
boresighter/trainer is dimensioned to be received in either a 9 mm,
.32 caliber, .38 caliber, .40 caliber, .44 caliber, .45 caliber or
.50 caliber gun.
10. The boresighter/trainer of claim 1, wherein the body has an
surface with a first diameter at the proximal end and a second
diameter less than the first diameter at the distal end, and
wherein the seating portion is a tapered section of an outer
surface of the body.
11. The boresighter/trainer of claim 1, wherein the bore adapter
diameter is variable.
12. The boresighter/trainer of claim 1, wherein the body distal end
is tapered and the bore adapter deforming members overly the distal
end, and are configured to splay and move outward from the distal
end when force is applied to them by the fastener.
13. The boresighter/trainer of claim 1, wherein the body includes a
first cavity having an axis aligned with the body axis, and the
first cavity houses the light source.
14. The boresighter/trainer of claim 13, wherein the body includes
a second cavity adjacent the first cavity, wherein the switch and
power source are in the second cavity.
15. The boresighter/trainer of claim 1, wherein the proximal end of
the body includes an opening from which the light source beam is
projected.
16. The boresighter/trainer of claim 14, wherein the switch has a
third position, and when the switch is in its third position the
boresighter/trainer is in a third mode in which it is off.
17. The boresighter/trainer of claim 1, wherein the body is one
piece.
18. A kit comprising the boresighter/trainer of claim 1 and one or
more additional bore adaptors, wherein each of the one or more
additional bore adaptors is configured to fit different-sized
firearm barrels.
19. The kit of claim 18, wherein the bore adaptors fit firearms
having the following bore sizes: 9 mm, .32 caliber, .38 caliber,
.40 caliber, .44 caliber, .45 caliber, or .50 caliber.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of U.S. patent
application Ser. No. 15/804,229, filed on Nov. 6, 2017, and a
continuation-in-part of U.S. patent application Ser. No.
14/963,475, filed on Dec. 9, 2015, which is a continuation-in-part
of U.S. patent application Ser. No. 14/459,274, filed on Aug. 13,
2014, now U.S. Pat. No. 9,297,614, each of which are hereby
incorporated by reference in their entirety.
[0002] This application incorporates by reference, to the extent
they are not inconsistent with this disclosure, the disclosures of:
U.S. Pat. No. 9,170,079 entitled LASER TRAINER CARTRIDGE and U.S.
Pat. No. 6,421,947 entitled AXIS ALIGNMENT APPARATUS.
FIELD OF THE INVENTION
[0003] The present invention relates to a firearm boresighter that
may be used to align a gun barrel with a sight on the gun; and also
used for firearm training, without requiring live ammunition.
BACKGROUND OF THE INVENTION
[0004] Conventional firearm training can be dangerous, expensive
(considering the prices for ammunition and replacement targets) and
can only be performed in certain areas, such as shooting ranges.
The present invention(s) allows firearm training to be performed
safely, inexpensively, and almost anywhere without the use of live
ammunition. Additionally, the present invention(s) is also a
boresighter that functions to align the bore of a firearm barrel
with a sight on the firearm. Until now, trainers and boresighters
have been different products, requiring the owner of a firearm to
purchase at least two separate products.
SUMMARY OF THE INVENTION
[0005] A laser boresighter/trainer (or just boresighter/trainer) is
configured to fit inside the end of a barrel (or bore) of a
firearm. A boresighter/trainer according to aspects of the
invention can be activated to emit laser light that indicates where
a bullet fired from the firearm would strike. The emitted light
projects the longitudinal axis of the firearm barrel in which the
boresighter/trainer is positioned. It can be used to align a gun's
sights with the bore's longitudinal axis. It can also be used to
provide realistic firearms training, preferably allowing a user to
practice tap, rack, bang and/or malfunction drills. The
boresighter/trainer can be configured to operate with several
firearm calibers.
[0006] The boresighter/trainer comprises a body (which can be a
one-piece body or a multiple-piece body). The body is elongated
along an axis that is aligned with the longitudinal axis of the
firearm bore when the boresighter/trainer is positioned in the gun
bore. The body has a proximal end in which the laser is mounted and
that remains outside of the firearm bore, and a distal end that is
inserted into the firearm bore. Between the distal end and proximal
end is a seating portion to form a first contact area with the
inner surface of the firearm barrel at its distal end (which is the
end farthest from a user and from where a fired bullet exits the
barrel).
[0007] A bore adapter is attached to the distal end of the
boresighter/trainer, and the bore adaptor is inserted into the gun
barrel. The adapter has an outside diameter that forms a second
contact area with the inner surface of the gun barrel. The first
contact area and second contact area position and substantially
center the boresighter/trainer in the firearm barrel, such that the
body axis of the boresighter/trainer is substantially aligned with
the longitudinal axis of the firearm barrel.
[0008] The boresighter/trainer has at least two modes. In a first
mode, the laser is on constantly so a user can align a sight (such
as an optical scope or mechanical sight) with a laser light emitted
by boresighter/trainer. In this manner, the sight can be aligned
with the longitudinal axis of the firearm barrel. In a second mode,
the boresighter/trainer emits laser light for a short duration when
it is activated by the sound of the firearm firing pin striking.
The boresighter/trainer may also have a third mode in which it is
turned off.
[0009] Utilizing a boresighter/trainer, the owner of a firearm need
purchase only one product to (1) align a sight with the firearm
barrel, and (2) train using laser light instead of live ammunition.
Further, dealers could potentially reduce their inventory of
products because only a single product is required for firearm bore
alignment and firearm training.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] FIGS. 1A and 1B are side-views illustrating a
boresighter/trainer according to aspects of the invention.
[0011] FIG. 2 illustrates the boresighter/trainer of FIGS. 1A and
1B mounted in the end of a gun barrel.
[0012] FIGS. 3A and 3B illustrate the variable diameter feature of
the boresighter/trainer.
[0013] FIG. 4 illustrates an end view of a boresighter/trainer
according to aspects of the invention.
[0014] FIG. 5 illustrates a plurality of different-sized bore
adapters.
[0015] FIGS. 6A and 6B are partial cross-sectional views of the
boresighter/trainer of FIGS. 1A and 1B, depicting the first
cylindrical cavity.
[0016] FIG. 7 is a partial cross-sectional view of the switch of
FIG. 6B.
[0017] FIG. 8 is a partial cross-sectional view of the body of FIG.
6A.
[0018] FIG. 9 is a top view of a boresighter/trainer according to
aspects of the invention.
[0019] FIG. 10 is a side view of the boresighter/trainer of FIG.
9.
[0020] FIG. 10A is an end view of the distal end of the
boresighter/trainer of FIGS. 9-10.
[0021] FIG. 10B is an end view of the proximal end of the
boresighter/trainer shown in FIGS. 9-10.
[0022] FIG. 11 is a cross-sectional side view of the
boresighter/trainer of FIGS. 9-10.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
[0023] Turning now to the Figures, where the purpose is to describe
preferred embodiments of the invention and not to limit same. FIGS.
1A and 1B are side-views illustrating the present invention
boresighter/trainer. The boresighter/trainer 10 includes a laser,
mounted so that its beam is aligned along the axis 14 of the
boresighter/trainer tool. The boresighter/trainer is positioned in
a gun barrel 1 so its axis 14 is substantially aligned with axis 36
of the gun barrel.
[0024] The boresighter/trainer 10 may be configured to operate in
conjunction with firearms of essentially any desired caliber. In
certain embodiments, boresighter/trainer 10 is configured to fit a
firearm having a caliber of 9 mm, .32 cal, .38 cal, .40 cal., .44
cal., .45 cal., or .50 cal., and many other bore
sizes--particularly bore sizes for rifles. The boresighter/trainer
10 is configured to be positioned in the end of the barrel (or
bore) of essentially any desired firearm having a barrel long
enough to receive the boresighter/trainer. The boresighter/trainer
is most preferably used in the barrel of a rifle, although it may
also be used in other firearms. The Laser boresighter/trainer
preferably fits barrels with a caliber of .22 to .50 caliber and
preferably fits barrels 21/2 inches or longer. When in the
boresighter mode it is more likely to be used in a rifle, whereas
in training mode it is more likely used in a pistol. However, it
could be used in any suitable firearm in either the boresighter or
training mode.
[0025] Boresighter/trainer 10 comprises a body 12 with a generally
elongated shape along a body axis 14. The body 12 has a proximal
end 16 and a distal end 18. At the proximal end 16 the body surface
has a first diameter 20, while at the distal end 18 there is a
second diameter 22 which is less that the first diameter 20.
Between the proximal end 16 and distal end 18 is a seating area 24.
As shown, seating area 24 is a tapered portion of body 12.
[0026] FIG. 2 illustrates the boresighter/trainer of FIG. 1A or 1B
mounted in a gun bore, the longitudinal axis of which is projected
when the boresighter/trainer emits laser light. The seating portion
24 is tapered to form a first, contact region 26, received in a gun
barrel. As shown, the seating portion 24 is a tapered outer surface
of body 12. When end 16 is pushed into the bore of a gun, the
tapered 24 eventually seats against the wall of the gun bore at the
distal end of the gun. Potion 24 fits many bore diameters, from
bores having an inside diameter as shown at numeral 28 to slightly
less that the first diameter 20 (see FIGS. 1A and 1B).
[0027] Turning again to FIGS. 1A and 1B, boresighter/trainer 10
also comprises a bore adapter 30, which is attached to the distal
end 18. Bore adapter 30 is preferably made out of a flexible
material such as plastic or rubber. Bore adapter 30 has an adapter
diameter 32. As shown in FIG. 2, the bore adapter 30 forms a
second, contact area 34 with the bore's inside wall 28. The first
contact region 26 and the second contact area 34 position and
center boresighter/trainer 10 in the gun barrel and align body axis
12 with the bore longitudinal axis 36.
[0028] FIG. 1A shows an aspect of the boresighter/trainer wherein
distal end 18 is a conically shaped part of body 12. FIG. 1B
illustrates a slightly different aspect of the boresighter/trainer
in which a conical shape is specifically formed into bore adapter
30. Distal end 18 may have a small chamfer to interface with the
internal cone shape of the bore adapter 30 of FIG. 1B. Once the
bore adapter 30 of FIG. 1B is mounted on body 12, the
boresighter/trainer of FIG. 1B functions the same as the
boresighter/trainer of FIG. 1A.
[0029] FIGS. 3A and 3B illustrate the variable diameter 32 feature
of the bore adapter 30. The same size bore adapter 30 is shown in
FIGS. 3A and 3B, and the diameter 32 in FIG. 3B is greater than in
FIG. 3A. Bore adapter 30 may include deformable fingers, such as
fingers 38 and 40. Although only two fingers are shown in these
figures, and four fingers are shown in other figures, the
boresighter/trainer is not limited to a specific number of fingers,
or to using fingers. Any deformable structure that would fit into a
gun barrel and pressure fit against the inside wall of the barrel
could be used. For example, the bore adapter may be a cylindrical
tube wherein its center expands when its two ends are
compressed.
[0030] As shown best in FIG. 2, the bore adapter fingers 38 and 40
overlie the distal end 18. A fastener, such as screw 42, which is
used to attach bore adapter 30 to distal end 18, may be tightened
so screw head 44 presses against bore adapter 30 and forces it
against distal end 18. The force causes deformation of fingers 38
and 40, which causes the fingers to expand and diameter 32 to
increase as shown in FIGS. 3A and 3B. Thus, the fingers 38 and 40
are splayed in response to the force and to form the desired
adapter diameter 32 for an interference fit inside of a particular
diameter gun barrel.
[0031] In some aspects, as shown in FIGS. 3A and 3B, the distal end
18 second diameter 22 is tapered, with a smaller diameter at the
extreme distal end 18.
[0032] FIG. 4 illustrates an end view of bore adapter 30. In this
embodiment, bore adapter 30 shown in FIG. 4 has four fingers,
fingers 38, 40, 46, and 48. The bore adapter 30 also includes a
ring 50, or a similar structure, to accept a fastener, such as
screw 42 (not shown), in a hole 52. The fingers 38, 40, 46, and 48
are axially disposed and attached to ring 50. In other aspects not
shown, the ring 50 is only slightly larger than the screw hole 52,
and the fingers, where attached, are not perpendicular, but are
more gradually bent into a position perpendicular to the ring
50.
[0033] FIG. 5 illustrates a plurality of differently sized bore
adapters 30. In order to cover a wide range of inside bore
diameters it may be practical to provide a plurality of
different-sized bore adapters 30, all of which have a respective,
different nominal adapter diameter 32. The adaptor diameter of each
adaptor 30 can be varied, such as with an adjustment of screw 42,
as discussed above and shown, for example, in FIGS. 3A and 3B. A
user would select a bore adapter 30 with a diameter 32 that
approximately conforms with, and is slightly smaller than, the
inside bore diameter of the firearm with which the
boresighter/trainer 10 will be used. The nominal diameter 32 of an
adapter 30 can then be modified, such as with screw 42, for a
proper fit inside of the firearm bore.
[0034] FIGS. 6A and 6B are partial cross-sectional illustrations of
the boresighter/trainer 10 of FIG. 1A or 1B, depicting a first
cavity 60. FIG. 6A shows the first cavity 60 without components,
while FIG. 6B shows the first cavity 60 with components. The first
cavity 60 as shown has an axis that is aligned with body axis 12,
and cavity 60 is located between the proximal end 16 and the
seating portion 24 (see FIG. 1A). As shown in FIG. 6B, the first
cavity 60 houses a light source 62, typically a laser, an
electrically conductive spring 64, and a switch 66, which as shown
is a rotary switch, although any switch can be used. The light
source 62 is mounted in the housing so that it need not be removed
to change batteries or to make adjustments to its alignment. Light
source 62 emits a beam of light along the body axis 12. Switch 66
as shown is rotated to selectively connect the light source 62 to a
power source. As is explained below, the spring keeps switch 66 in
a position, either on or off, and provides an electrical path to
the laser light 62. As shown in FIG. 1A, body 12 as shown includes
a channel 70 formed between the body surface and the first cavity
60 to expose the switch 66. The switch 66 can be accessed to move
it from one position to another through channel 70.
[0035] Also shown in FIGS. 6A and 6B, the body proximal end 16
includes a second cavity 68 connected to the first cavity 60. The
second cavity 68 as shown is aligned with body axis 12 to form an
opening from which a light beam is projected.
[0036] The first cavity 60 has a cavity diameter 72 (FIG. 6A). The
switch 66 is a cylinder with a switch diameter 74 (see FIG. 6B),
which is less than the cavity diameter 72, so that switch 66 may
rotate. Switch 66 as shown has an axis substantially aligned along
the body axis 12. Switch 66 can be rotated to selectively connect
the power source 110 to the light source 62.
[0037] FIG. 7 is a partial cross-sectional view of the switch 66.
The switch 66 has a top, or first, outside surface 80. Surface 80
as shown is disposed around switch axis 82. The first surface 80
has a conductive area 84. A conductive rod 84 is specifically
shown, but other conductive structures could be used. The first
surface 80 also includes a cam 86.
[0038] FIG. 8 is a partial cross-sectional view of the body 12 of
FIG. 6A. The first cavity 60 has a second surface 88 which
interfaces with the switch first surface 80 (shown in FIG. 7),
which in this embodiment is radially disposed around body axis 12.
Second surface 88 includes a second conductive area 90. An
electrical connection is made between the body 12 and the switch 66
when the second conductive area 90 interfaces with the first
conductive area 84 (FIG. 7). The second surface 88 also includes a
channel, or recessed area 92, shown as the area in the exterior
ring that is not double cross-hatched. When channel 92 receives
switch cam 86, an electrical connection is made between first
conductive area 84 and second conductive area 90. The conductive
areas are not limited to any special shape or placement on the
surface for operation. For example, the conductive areas can be
centered around the axis. When cam 86 is not in channel 92, the
first surface 80 and second surface 88 are forced apart, and no
electrical connection is made. The shapes of cam 86 and channel 92
are not limited merely to the depicted example.
[0039] Returning to FIG. 7, switch 66 has a third outside surface
100 disposed (as shown in this embodiment) around the switch axis
82, having a third conductive area 101. If the switch 66 operates
as a passive electrical conductor, the third conductive area 101
can be a conductive rod, such as the depicted first conductive area
84. In some aspects as disclosed, the conductive rod passes all the
way through switch 66 from the first surface 90 to the third
surface 100. Alternately, the switch can be a metal, such as
aluminum, which is anodized or coated with an insulator, except for
areas on first surface 80 and third surface 100 that act as
conductive areas 84 and 101, so that switch 66 acts as a conductor.
As explained below, switch 66 may act as a battery housing in some
aspects of the invention, and the third conductive area can be
considered the battery terminal, the spring 64, or the combination
of battery and spring 64.
[0040] Returning to FIG. 6B, the first cavity 60 has a fourth
surface 102 disposed around the body axis 12, having a fourth
conductive area, which is not shown. The fourth surface can be a
part of body 12, as is the second surface 88 (as shown in FIG. 8).
However, as depicted in FIG. 6B the fourth surface is actually the
light source 62 electrical terminal. Also as shown, the
electrically conductive spring 64 is substantially aligned along
the body axis 12 between the third surface 100 and fourth surface
102. Therefore, when switch 66 is "on," with the cam 86 being
engaged with channel 92, the second conductive area 90 is connected
to the fourth conductive area 102 through the switch 66 and spring
64.
[0041] In some aspects of the invention the power source 110 is
housed elsewhere in the body 12 (not shown). The switch 66 acts as
a selectively engagable conductor that completes an electrical
circuit between the second conductive area 90 and fourth surface
area 102, which is also conductive, from power source 110 to the
light source 62, with the return ground path from light source 62
being through the electrically conductant body 12. Switch 66 may be
removed through channel 70.
[0042] As shown in FIGS. 7 and 11, a power source 110 is a
plurality of batteries in battery cavity 112. The power source 110
has a first polarity (+) connected to the switch's first conductive
area 84 and a second polarity (-) connected to the switch's third
conductive area 101. In some aspects of the invention an axial plug
114, with a center hole to admit spring 64, seals the end of
battery cavity 112. The batteries are preferably insulated from the
body of the boresighter/trainer 10 by a mylar sleeve 21. The laser
module 62 may be of any suitable size, shape, and configuration,
and may emit light of any desired shape, intensity, and color.
[0043] In one embodiment, the boresighter/trainer has a power
source 100 that is three 377-type batteries, or three V393/SR754 W,
or equivalent batteries to provide power to a circuit 8, which may
utilize 4-4.5 V. In this embodiment, the batteries provide enough
power for approximately 3,000 emissions of laser light that
simulate the location of where a bullet being fired would
strike.
[0044] As shown in FIG. 2, when boresighter/trainer 10 is
positioned in the barrel of a firearm, proximal end 16 and the
portion of body 12 that includes laser module 6, power source 110,
and switch 66 are outside of the gun barrel so they may be accessed
by a user.
[0045] Using known methods of making circuitry, with an appropriate
circuit, the switch 66 may have two or three positions, and the
boresighter/trainer could operates differently in each position. In
a preferred embodiment, the switch has a first position in which
the boresighter/trainer 10 has a first operating mode (or mode). In
the first mode, the boresighter/trainer is constantly on, and can
be used to align the bore of the firearm in which
boresighter/trainer 10 is positioned with a sight of the
firearm.
[0046] Switch 66 has a second position that causes
boresighter/trainer 10 to operate in a second mode. In the second
mode, boresighter/trainer 10 emits a burst of laser light when it
detects the sound of the firing pin of the firearm striking for a
time of about 100 milliseconds, although any suitable time can be
used, such as any duration between 0.05 and 0.20 seconds. Or, laser
62 may be illuminated for between about 7.5 milliseconds (ms) to
about 12.5 ms per shot, i.e., each time the sound of the firing pin
striking activates boresighter/trainer 10. The boresighter/trainer
10 can be used for rack, bang or malfunction training drills when
in the second mode. The disclosure of U.S. Publication No.
2016/0161220, entitled Master Module Light Source and Trainer, to
Moore et al. and published on Jun. 9, 2016 is incorporated herein
by reference to the extent it is not inconsistent with this
application. Paragraphs [0072]-[0075] and FIGS. 36-38 of U.S.
Publication No. 2016/0161220 in particular disclose a structure and
circuitry for detecting the sound of a firing pin and activating a
laser module in response.
[0047] Switch 66 may also have a third position in which
boresighter/trainer 10 has a third mode in which it is off. In this
embodiment, the circuitry (not shown) is implemented using a
printed circuit board. Alternate embodiments of the invention may
utilize any other suitable circuit to cause the laser module 62 to
illuminate.
[0048] In some embodiments, the boresighter/trainer 10 may be
configured to produce a sound (e.g., a gunshot sound) when in the
second mode and the firing pin strikes the backer. The
boresighter/trainer may include a speaker or any other suitable
device to produce a sound, and may produce any desired sound.
[0049] Having thus described some embodiments of the invention,
other variations and embodiments that do not depart from the spirit
of the invention will become apparent to those skilled in the art.
The scope of the present invention is thus not limited to any
particular embodiment, but is instead set forth in the appended
claims and the legal equivalents thereof. Unless expressly stated
in the written description or claims, the steps of any method
recited in the claims may be performed in any order capable of
yielding the desired result.
* * * * *