U.S. patent application number 16/035858 was filed with the patent office on 2019-01-17 for grip-mounted laser sight for a handgun.
This patent application is currently assigned to Lumen Defense Products Inc. The applicant listed for this patent is Lumen Defense Products Inc. Invention is credited to Paul IMHOLT, Robert Mark TOOLE.
Application Number | 20190017782 16/035858 |
Document ID | / |
Family ID | 64998769 |
Filed Date | 2019-01-17 |
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United States Patent
Application |
20190017782 |
Kind Code |
A1 |
TOOLE; Robert Mark ; et
al. |
January 17, 2019 |
GRIP-MOUNTED LASER SIGHT FOR A HANDGUN
Abstract
A laser sighting device for a handgun may include a power supply
module and a backstrap having a laser emitter, the power supply
module and the backstrap each comprising a portion of an electrical
conduction path. When the backstrap is mounted to an external
portion of a handgrip and the power supply module is inserted into
an existing cavity of the handgrip, the electrical conduction path
is automatically completed and the laser emitter is powered by the
power supply module.
Inventors: |
TOOLE; Robert Mark;
(Beaverton, OR) ; IMHOLT; Paul; (Molalla,
OR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Lumen Defense Products Inc |
Oregon City |
OR |
US |
|
|
Assignee: |
Lumen Defense Products Inc
Oregon City
OR
|
Family ID: |
64998769 |
Appl. No.: |
16/035858 |
Filed: |
July 16, 2018 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
62533049 |
Jul 15, 2017 |
|
|
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F41G 1/345 20130101;
F41C 23/10 20130101; F41G 1/35 20130101 |
International
Class: |
F41G 1/35 20060101
F41G001/35; F41C 23/10 20060101 F41C023/10; F41G 1/34 20060101
F41G001/34 |
Claims
1. A laser sighting device for a firearm, the laser sighting device
comprising: a backstrap including a laser emitter, a first
electrical conduction path, and a switch configured to selectively
connect the laser emitter to the first electrical conduction path;
and a battery holder including a second electrical conduction path;
wherein the laser sighting device is transitionable between (a) an
operational configuration, in which the battery holder is inserted
into an open cavity of a handgrip of the firearm adjacent a
magazine well of the firearm, the backstrap is coupled to an
external surface of the handgrip, and the first electrical
conduction path is electrically connected to the second electrical
conduction path, and (b) a detached configuration, in which the
battery holder and the backstrap are separated from the
handgrip.
2. The device of claim 1, wherein the first electrical conduction
path of the backstrap includes first electrical terminals, and the
second electrical conduction path of the battery holder includes
second electrical terminals configured to mate with the first
electrical terminals.
3. The device of claim 2, wherein the first electrical terminals
and the second electrical terminals are disposed within the cavity
of the firearm handgrip when the laser sighting device is in the
operational configuration.
4. The device of claim 3, wherein the backstrap further comprises
an elongate member configured to pass through an aperture in a wall
of the firearm handgrip, and the first electrical terminals are
disposed on the elongate member.
5. The device of claim 4, wherein battery holder further comprises
a jaw configured to receive the elongate member, and the second
electrical terminals are disposed on the jaw.
6. The device of claim 2, wherein the first electrical terminals
and second electrical terminals are connected to each other and
disposed external to the handgrip when the laser sighting device is
in the operational configuration.
7. The device of claim 1, wherein the backstrap and the battery
holder form a unitary component in both the operational
configuration and the detached configuration.
8. A laser sighting device for a firearm, the laser sighting device
comprising: a backstrap configured to be attachable to an external
surface of a handgrip of a firearm, the backstrap including a laser
emitter and a manually-operated switch configured to selectively
activate the laser emitter; a battery holder configured to be
insertable into an open cavity disposed adjacent a magazine well of
the firearm; and an electrical conduction path configured to
electrically couple the backstrap to the battery holder.
9. The device of claim 8, the electrical conduction path comprising
a first electrical conduction path portion disposed on the
backstrap and a second electrical conduction path portion disposed
on the battery holder.
10. The device of claim 9, wherein the first electrical conduction
path portion is at least partially disposed on an elongate member
extending from the backstrap, such that the elongate member is
configured to protrude into the open cavity of the handgrip through
an aperture formed in a wall of the handgrip.
11. The device of claim 9, wherein the first electrical conduction
path portion is configured to extend into the open cavity.
12. The device of claim 9, wherein the first electrical conduction
path portion comprises first terminals configured to form an
electrical connection with second terminals of the second
electrical conduction path portion.
13. The device of claim 12, wherein the electrical connection is
disposed external to the handgrip.
14. The device of claim 12, wherein the electrical connection is
disposed within the open cavity.
15. The device of claim 8, wherein the backstrap and the battery
holder are permanently affixed to each other.
16. A method of providing a laser sight for a handgun, the method
comprising: coupling a backstrap to a handgrip of the handgun, the
backstrap including a laser emitter and a hand-operated switch
coupled to the laser emitter; inserting a battery holder and a
battery into an open-mouthed cavity of the handgrip of the handgun,
the open-mouthed cavity being disposed adjacent a magazine well of
the handgun; and forming an electrical conduction path from the
battery to the laser emitter, such that the switch is configured to
activate the laser emitter by selectively coupling the laser
emitter to the electrical conduction path.
17. The method of claim 16, wherein forming the electrical
conduction path comprises coupling a first portion of the
electrical conduction path disposed on the backstrap to a second
portion of the electrical conduction path disposed on the battery
holder.
18. The method of claim 17, wherein the first portion of the
electrical conduction path and the second portion of the electrical
conduction path are coupled inside the open-mouthed cavity.
19. The method of claim 18, further comprising causing the first
portion of the electrical conduction path to protrude through an
aperture of the handgrip and into the open-mouthed cavity.
20. The method of claim 17, wherein the first portion of the
electrical conduction path and the second portion of the electrical
conduction path are coupled outside the open-mouthed cavity.
Description
CROSS-REFERENCES
[0001] This application claims the benefit under 35 U.S.C. .sctn.
119(e) of the priority of U.S. Provisional Patent Application Ser.
No. 62/533,049, filed Jul. 15, 2017, the entirety of which is
hereby incorporated by reference for all purposes.
FIELD
[0002] This disclosure relates to systems and methods for providing
laser sights for firearms. More specifically, the disclosed
embodiments relate to improved backstrap-style laser sighting
devices that can be incorporated into existing handguns.
INTRODUCTION
[0003] The popularity and usefulness of laser sighting devices
integrated into firearm handgrips have grown over the past several
years. When using firearms, it is often advantageous for the user
to be able to quickly and accurately align the firearm with the
target. Many devices are available to assist with aiming, including
the classic V-sight, peephole sight, 3-dot sight and similar
iron-sight structures, as well as telescopic or optical sights.
[0004] However, in low light situations (e.g., at night, in
darkened rooms of buildings, etc.), a sighting device that relies
on ambient light is at a disadvantage. Under such conditions, the
target may itself be difficult to acquire or track visually.
Furthermore, gunsights that are lit only by external light sources
are less effective due to the need to see and align the sights with
the already poorly-perceived target.
[0005] Existing laser sight solutions add significant bulk and
width to the handgun grip and/or require significant permanent
modification to the lower frame of the handgun. Accordingly, a need
exists for a laser sighting device that is attachable to the
handgrip without requiring substantial modification of the firearm,
and that does not increase the outer width of the handgun grip.
SUMMARY
[0006] The present disclosure provides systems, apparatuses, and
methods relating to improved laser sighting devices for use with
handguns and other firearms. In some embodiments, a laser sighting
device for a firearm may include a backstrap including a laser
emitter, a first electrical conduction path, and a switch
configured to selectively connect the laser emitter to the first
electrical conduction path; and a battery holder including a second
electrical conduction path; wherein the laser sighting device is
transitionable between (a) an operational configuration, in which
the battery holder is inserted into an open cavity of a handgrip of
the firearm adjacent a magazine well of the firearm, the backstrap
is coupled to an external surface of the handgrip, and the first
electrical conduction path is electrically connected to the second
electrical conduction path, and (b) a detached configuration, in
which the battery holder and the backstrap are separated from the
handgrip.
[0007] In some embodiments, a laser sighting device for a firearm
may include a backstrap configured to be attachable to an external
surface of a handgrip of a firearm, the backstrap including a laser
emitter and a manually-operated switch configured to selectively
activate the laser emitter; a battery holder configured to be
insertable into an open cavity disposed adjacent a magazine well of
the firearm; and an electrical conduction path configured to
electrically couple the backstrap to the battery holder.
[0008] In some embodiments, a method of providing a laser sight for
a handgun may include coupling a backstrap to a handgrip of the
handgun, the backstrap including a laser emitter and a
hand-operated switch coupled to the laser emitter; inserting a
battery holder and a battery into an open-mouthed cavity of the
handgrip of the handgun, the open-mouthed cavity being disposed
adjacent a magazine well of the handgun; forming an electrical
conduction path from the battery to the laser emitter, such that
the switch is configured to activate the laser emitter by
selectively coupling the laser emitter to the electrical conduction
path.
[0009] Features, functions, and advantages may be achieved
independently in various embodiments of the present disclosure, or
may be combined in yet other embodiments, further details of which
can be seen with reference to the following description and
drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] FIG. 1 is an isometric view of an illustrative handgun
including an illustrative backstrap laser sighting device in
accordance with aspects of the present disclosure.
[0011] FIG. 2 is an exploded view of portions of the handgun and
backstrap laser sighting device of FIG. 1.
[0012] FIG. 3 is a side elevation view of a lower portion of the
handgun and backstrap laser sighting device of FIG. 1.
[0013] FIG. 4 is a partial sectional view of a portion of the
handgun and backstrap laser sighting device of FIG. 1, viewed from
the right side of the handgun.
[0014] FIG. 5 is a partial sectional view of a handgrip portion of
the handgun and backstrap laser sighting device of FIG. 1, viewed
from the left side of the handgun
[0015] FIG. 6 is a front elevation view of an illustrative
backstrap portion of a laser sighting device according to the
present teachings.
[0016] FIG. 7 is an isometric view of another illustrative
backstrap portion and battery holder portion of a laser sighting
device according to the present teachings.
[0017] FIG. 8 is an isometric view of an illustrative handgun
including another illustrative backstrap laser sighting device in
accordance with aspects of the present disclosure.
[0018] FIG. 9 is a front elevation view of the illustrative
backstrap laser sighting device of FIG. 8.
[0019] FIG. 10 is an exploded view of the backstrap laser sighting
device of FIG. 9.
[0020] FIG. 11 is a sectional view of a handgrip portion of the
handgun of FIG. 8.
[0021] FIG. 12 is a flowchart depicting steps of an illustrative
method of providing a laser sight for a firearm.
DETAILED DESCRIPTION
[0022] Various aspects and examples of an aftermarket,
backstrap-style laser sighting device, as well as related systems
and methods, are described below and illustrated in the associated
drawings. Unless otherwise specified, a laser sighting device in
accordance with the present teachings, and/or its various
components, may contain at least one of the structures, components,
functionalities, and/or variations described, illustrated, and/or
incorporated herein. Furthermore, unless specifically excluded, the
process steps, structures, components, functionalities, and/or
variations described, illustrated, and/or incorporated herein in
connection with the present teachings may be included in other
similar devices and methods, including being interchangeable
between disclosed embodiments. The following description of various
examples is merely illustrative in nature and is in no way intended
to limit the disclosure, its application, or uses. Additionally,
the advantages provided by the examples and embodiments described
below are illustrative in nature and not all examples and
embodiments provide the same advantages or the same degree of
advantages.
[0023] This Detailed Description includes the following sections,
which follow immediately below: (1) Definitions; (2) Overview; (3)
Examples, Components, and Alternatives; (4) Advantages, Features,
and Benefits; and (5) Conclusion. The Examples, Components, and
Alternatives section is further divided into subsections A through
D, each of which is labeled accordingly.
Definitions
[0024] The following definitions apply herein, unless otherwise
indicated.
[0025] "Substantially" means to be more-or-less conforming to the
particular dimension, range, shape, concept, or other aspect
modified by the term, such that a feature or component need not
conform exactly. For example, a "substantially cylindrical" object
means that the object resembles a cylinder, but may have one or
more deviations from a true cylinder.
[0026] "Comprising," "including," and "having" (and conjugations
thereof) are used interchangeably to mean including but not
necessarily limited to, and are open-ended terms not intended to
exclude additional, unrecited elements or method steps.
[0027] Terms such as "first", "second", and "third" are used to
distinguish or identify various members of a group, or the like,
and are not intended to show serial or numerical limitation.
[0028] "AKA" means "also known as," and may be used to indicate an
alternative or corresponding term for a given element or
elements.
[0029] Directional terms such as "up," "down," "rear," "forward,"
"vertical," "horizontal," and the like are intended to be
understood in the context of a host firearm on which systems
described herein may be mounted or otherwise attached. If
applicable, the host firearm should be considered as it is held in
a typical firing position, such that the barrel of the weapon is
substantially horizontal. In the absence of a host firearm, the
same directional terms may be used as if the firearm were present.
For example, even when viewed in isolation, a component may have a
"forward" edge, based on the fact that the edge in question would
be installed generally facing the front portion (i.e., muzzle end)
of a host firearm.
[0030] "Coupled" means connected, either permanently or releasably,
whether directly or indirectly through intervening components.
[0031] "Resilient" describes a material or structure configured to
be deformed elastically under normal operating loads (e.g., when
compressed) and to return to an original shape or position when
unloaded.
[0032] "Rigid" describes a material or structure configured to be
stiff, non-deformable, or substantially lacking in flexibility
under normal operating conditions.
Overview
[0033] In general, laser sighting devices of the present disclosure
relate to laser gunsight systems that fit the handgrip of a firearm
without requiring significant modification of the firearm. The
laser is mounted in a removable backstrap (or side panel) that
conforms to the shape of the rear and/or side portion of the
handgrip. A power source for the laser emitter includes a removable
battery compartment or holder located inside a preexisting cavity
of the handgun grip. Electrical terminals on the removable
backstrap make contact with terminals on the removable battery
compartment located inside the firearm to provide power for the
laser.
[0034] Laser sighting devices described herein include a backstrap
portion configured to be attachable to an external surface of a
handgrip of a firearm. The backstrap includes a laser emitter and a
manually-operated switch configured to selectively activate the
laser emitter. A battery holder (e.g., a separate component from
the backstrap) is configured to be insertable into an open cavity
disposed adjacent a magazine well of the firearm. An electrical
conduction path is configured to electrically couple the backstrap
to the battery holder. The electrical conduction path may be
divided into a first electrical conduction path portion disposed on
the backstrap and a second electrical conduction path portion
disposed on the battery holder.
[0035] In some embodiments, the first portion of the electrical
conduction path protrudes through the handgrip and into the cavity,
where it contacts the second portion. In some embodiments, the two
portions of the electrical conduction path make contact outside of
the cavity, such that the path extends through an open mouth of the
cavity and does not pass through the wall of the handgrip.
[0036] Laser sighting devices described herein may be mounted on
the handgrip of a firearm. These devices include a backstrap
portion having a compartment for holding a laser emitter, such that
the laser emitter propagates a beam of laser light substantially in
the muzzle direction of the firearm. A switch is disposed in the
backstrap (or elsewhere) for activation of the laser by the user's
hand while holding the handgrip in a firing position. A power
supply module (e.g., a battery holder) is used to power the laser,
and is disposed inside the handgun (e.g., in an existing cavity).
An electrical circuit is formed between the internally mounted
power supply module and the externally mounted laser. The switch
and circuit are contained within an integrated assembly that may be
attached to the handgrip of the firearm without requiring
substantial modification of the firearm. In some examples, no
modification is required. In some examples, a hole may be formed
(e.g., drilled) through the wall of the handgrip and into the
cavity.
[0037] Although weapons and firearms (e.g., pistols and handguns)
are referenced for efficiency of explanation throughout this
disclosure, laser sighting devices according to the present
teachings may be used with any suitable device that has a handgrip
and that may benefit from a laser sight (e.g., air guns, paintball
guns, BB guns, pellet guns, replica guns, rifles and machine guns
having pistol grips, slingshots, tools such as infrared
thermometers and long-range microphones, aimable optical devices
such as telescopes, and the like).
Examples, Components, and Alternatives
[0038] The following sections describe selected aspects of
exemplary laser sighting devices as well as related systems and/or
methods. The examples in these sections are intended for
illustration and should not be interpreted as limiting the scope of
the present disclosure. Each section may include one or more
distinct embodiments or examples, and/or contextual or related
information, function, and/or structure.
A. First Illustrative Laser Sighting Device
[0039] As shown in FIGS. 1-7, this section describes an
illustrative removable laser sighting device 100 having a power
source disposed internal to the host handgun. Laser sighting device
100 is an example of the laser sighting device described in the
Overview section, above.
[0040] FIG. 1 depicts laser sighting device 100 mounted on a
firearm 102. In this example, the firearm is a Glock semiautomatic
handgun (e.g., a Glock model 17, 171, 18, 19, 20, 21, or 22)
manufactured by Glock, GmbH, of Austria. Other suitable firearms
may be utilized with devices of the present disclosure.
[0041] With reference to FIGS. 1-5, firearm 102 includes a handgrip
104, a muzzle 106, a trigger 108, and a trigger guard 110. A
magazine 112 for holding ammunition is insertable into a magazine
well 114 of the firearm. Firearms such as the Glock handgun include
an open cavity 116 adjacent magazine well 114. Cavity 116 has an
open mouth or entrance at the bottom of the handgrip, and is
separated from magazine well 114 by an internal wall 118. Handgrip
104 includes an external wall 120, which defines the general shape
of the handgrip. For example, handgrip 104 has an overall length
122 extending generally from a base 124 (or butt) of the handgrip
to an upper tang 126.
[0042] Laser sighting device 100 includes a backstrap assembly 130
(AKA the backstrap portion) and a power supply module in the form
of a battery holder 132. Backstrap assembly 130 includes a
backstrap body 134, a laser emitter 136 housed in a laser emitter
housing 138, and a manually operated pushbutton or switch 140
coupled to a first electrical conduction path 142. Backstrap body
134 is an elongate curved structure that is shaped to conform to a
rear surface of handgrip 104. In this example, a length of the
backstrap body corresponds with length 122 of the handgrip, such
that the backstrap body extends to the base of handgrip 104 when
installed.
[0043] Backstrap assembly 130 is attachable to handgrip 104 by
inserting a pin 144 through holes 146 in backstrap body 134 and
corresponding holes 148 in handgrip 104, although any suitable
attachment method may be utilized. When installed on firearm 102,
i.e., in an operational configuration, laser emitter 136 (AKA the
laser module) of backstrap assembly 130 is held by housing 138 in
an orientation that substantially aligns a laser beam of emitter
136 with the direction of muzzle 106 (i.e., for targeting
purposes). Laser emitter 136 may include any suitable laser
emitting device, such as a class III laser emitter, of any suitable
power, such as 5 mW, and any suitable color laser beam (e.g., red
or green). The laser module may include a driver circuit configured
to regulate current to laser emitter 136. In some examples, a laser
may be used that does not require a driver circuit.
[0044] Switch 140 is disposed in any position where it is easily
operable by the user when holding firearm 102 in a firing position.
For example, the switch may be adjacent the trigger guard or the
switch may be manually operable on a rear surface of backstrap body
134. Switch 140 is coupled to first electrical conduction path 142,
and controls activation of laser emitter 136. Any suitable switch
may be utilized, including a normally-open pushbutton or a
push-to-toggle switch. In some examples, switch 240 may be in
wireless communication with laser emitter 236 (e.g., using
Bluetooth.RTM. wireless technology).
[0045] First conduction path 142 includes a pair of terminals 150
at a base end 152 of backstrap assembly 130, coupled to electrical
conductors 154. Conductors 154 travel along a handgrip-facing
surface of the backstrap body and connect the terminals to the
switch and laser emitter. As shown in FIG. 6, a cover plate 156
secures switch 140 in place. An aperture 158 is formed in a lower
portion of the backstrap, and is configured to align with a
corresponding aperture 160, which passes through wall 120 of
handgrip 104. Aperture 160 is an existing hole in firearm 102.
[0046] Battery holder 132 (AKA a battery compartment) includes a
base portion 170 and a battery interface portion 172 configured to
hold one or more batteries 174 (e.g., coin cell batteries or the
like). Battery interface portion 172 is further configured to fit
within cavity 116, which is present, e.g., in most or all current
Glock handgun models. In some examples, battery interface portion
172 includes a threaded hole 166 that aligns with hole 160, such
that the battery holder can be secured in place using a threaded
screw 168.
[0047] Battery holder 132 further includes a second electrical
conduction path 176 having a pair of conductors 178 connecting
batteries 174 to a pair of electrical terminals 180 at a rear of
base portion 170 of the battery holder. Electrical terminals 180
are configured to mate with electrical terminals 150 on backstrap
assembly 130, such that first electrical conduction path 142 and
second electrical conduction path 176 are connectible to form a
single circuit and provide power to laser emitter 136. Base portion
170 includes a flange or flange-like lip that extends rearward to
interface with terminals 150 of the backstrap. Accordingly, in this
example, the electrical connection between the two electrical
conduction paths (i.e., at the mated terminals) is disposed outside
of the cavity of the handgrip, and the electrical circuit extends
out of the mouth of the cavity and up to the laser emitter via
conductors 178 and 154.
[0048] FIG. 6 is a front elevation view of backstrap assembly 130.
FIG. 7 depicts another embodiment of laser sighting device 100,
generally indicated at 100'. Laser sighting device 100' is
substantially similar to device 100, with corresponding components
being described as above and labeled with corresponding primed
reference numerals (i.e., a backstrap assembly 130' including a
laser emitter 136', a housing 138', a first electrical conduction
path 142', holes 146', conductors 154', and a cover plate 156', a
screw 168', and a battery holder 132' having a base portion 170',
and a battery interface portion 172'). In this example, an upper
end of the backstrap assembly is shaped to fit partially around
tang 126, and the battery holder is shaped differently as compared
with device 100.
[0049] In the examples shown in FIGS. 1-7, the backstrap assembly
and battery holder are independently attachable and detachable from
the handgun. Accordingly, for example, the battery holder may be
removed and replaced without disturbing the backstrap assembly and
laser (e.g., to conveniently replace the batteries of the
device).
[0050] In some examples, laser sighting device 100 (or 100') is a
single or unitary piece, such that the backstrap assembly is
continuous with the battery holder. In these examples, the
backstrap body is flexible enough to allow the battery holder to be
inserted into the cavity and the backstrap body secured to the
handgrip without breaking the electrical conduction path.
Accordingly, the material of the backstrap body may be continuous
with the material of the battery holder, and the first and second
electrical conduction paths may be a continuous circuit rather than
being disjointed and disconnectible at the respective
terminals.
B. Second Illustrative Laser Sighting Device
[0051] As shown in FIGS. 8-11, this section describes an
illustrative removable laser sighting device 200 having a power
source disposed internal to the host handgun. Laser sighting device
200 is another example of the laser sighting device described in
the Overview section, above.
[0052] FIG. 8 is an isometric view of a handgun incorporating laser
sighting device 200; FIG. 9 is a front elevation view of device
200, separated from the handgun; FIG. 10 is an exploded view of
FIG. 9; and FIG. 11 is a sectional view of a handgrip portion of a
handgun having device 200 in an operational configuration.
[0053] FIG. 8 depicts laser sighting device 200 mounted on firearm
102. In this example, the firearm is again a Glock semiautomatic
handgun (e.g., a Glock model 17, 171, 18, 19, 20, 21, or 22)
manufactured by Glock, GmbH, of Austria. Other suitable firearms
may be utilized with devices of the present disclosure.
[0054] Laser sighting device 200 includes a backstrap assembly 230
(AKA the backstrap portion) and a power supply module in the form
of a battery holder 232. Backstrap assembly 230 includes a
backstrap body 234, a laser emitter 236 housed in a laser emitter
housing 238, and a manually operated pushbutton or switch 240
coupled to a first electrical conduction path 242. Backstrap body
234 is an elongate curved structure that conforms to a rear surface
of handgrip 104. In this example, a length of the backstrap body is
shorter than length 122 of the handgrip, such that the backstrap
body extends only partially along the length of handgrip 104 when
installed. In this embodiment, the backstrap may have a standard
length that can be used with handgrips of varying lengths 122
(i.e., with shorter or longer handgrips). In these examples, the
size of the battery holder may be varied to compensate for
different handgrip lengths.
[0055] Backstrap assembly 230 is attachable to handgrip 104 by
inserting pin 144 through holes 246 in backstrap body 234 and
corresponding holes 148 in handgrip 104, although any suitable
attachment method may be utilized. When installed on firearm 102,
i.e., in an operational configuration, laser emitter 236 (AKA the
laser module) of backstrap assembly 130 is held by housing 238 in
an orientation that substantially aligns a laser beam of emitter
236 with the direction of muzzle 106 (i.e., for targeting
purposes). Laser emitter 236 may again include any suitable laser
emitting device, such as a class III laser emitter, of any suitable
power, such as 5 mW, and any suitable color laser beam (e.g., red
or green). The laser module may include a driver circuit configured
to regulate current to laser emitter 236. In some examples, a laser
may be used that does not require a driver circuit.
[0056] Switch 240 is disposed in any position where it is easily
operable by the user when holding firearm 102 in a firing position.
For example, the switch may be adjacent the trigger guard or the
switch may be manually operable on a rear surface of backstrap body
234. Switch 240 is coupled to first electrical conduction path 242,
and controls activation of laser emitter 236. Any suitable switch
may be utilized, including a normally-open pushbutton or a
push-to-toggle switch. In some examples, switch 240 may be in
wireless communication with laser emitter 236 (e.g., using
Bluetooth.RTM. wireless technology).
[0057] First conduction path 242 includes a pair of terminals 250
disposed on an elongate member 252 of backstrap assembly 230,
coupled to electrical conductors 254. Member 252 is configured to
protrude in a generally forward direction, through an aperture 262
(AKA a hole) formed in wall 120 of handgrip 104. In some examples,
member 252 may further extend through another aperture 264 in
internal wall 118 (see, e.g., FIG. 11).
[0058] Conductors 254 travel along member 252 and a handgrip-facing
surface of the backstrap body, and connect the terminals to the
switch and laser emitter. As shown in FIG. 9, a cover plate 256
secures switch 240 in place. An aperture 258 is formed in a lower
portion of the backstrap, and is configured to align with
corresponding aperture 160, which passes through wall 120 of
handgrip 104. As described above, aperture 160 is an existing hole
in firearm 102.
[0059] Battery holder 232 includes a base portion 270 and a battery
interface portion 272 configured to hold one or more batteries 274
(e.g., coin cell batteries or the like). Battery interface portion
272 is further configured to fit within cavity 116, which is
present, e.g., in most or all current Glock handgun models. In some
examples, battery interface portion 272 includes a threaded hole
266 that aligns with hole 260, such that the battery holder can be
secured in place using a threaded screw 268.
[0060] Battery holder 232 further includes a second electrical
conduction path 276 having a pair of conductors 278 connecting
batteries 274 to a pair of electrical terminals 280 disposed on a
resilient jaw 282 of the battery holder. Jaw 282 is a two-pronged
fork configured to receive a circumference of member 252. Jaw 282
may be resilient, such that member 252 snaps into place through a
mouth of the jaw and held in place until sufficient force is used
to pull the jaw off of the member. Said another way, the jaw may be
configured to approach elongate member 252 from a radial direction
and snap onto the outer diameter of the elongate member. As
depicted in FIGS. 9 and 10, conductors 254 and 278 are configured
to mate, such that first electrical conduction path 242 and second
electrical conduction path 276 are connectible to form a single
circuit and provide power to laser emitter 236. Base portion 270
includes a flange or flange-like lip that prevents the battery
holder from further insertion into cavity 116. Accordingly, in this
example, the electrical connection between the two electrical
conduction paths (i.e., at the mated terminals) is disposed within
the cavity of the handgrip, and the electrical circuit extends
through wall 120 of handgrip 104.
[0061] In the examples shown in FIGS. 8-11, the backstrap assembly
and battery holder are again independently attachable and
detachable from the handgun. Accordingly, for example, the battery
holder may be removed and replaced without disturbing the backstrap
assembly and laser (e.g., to conveniently replace the batteries of
the device). Furthermore, the battery holder of device 200 may be
temporarily secured in place by the interaction between member 252
and jaw 282, e.g., if the screw is lost or dislodged for some
reason. However, the tension holding the jaw to the elongate member
may be easily overcome manually and the battery holder may be
released and removed from the cavity without moving or removing the
elongate member.
[0062] Moreover, it may be seen in the above descriptions that
laser sighting devices 100 and 200 each provide a two-piece device
that establishes an electrical circuit automatically upon assembly.
In other words, when the backstrap is coupled to the handgrip
surface and the power supply module is inserted into the handgrip
cavity, the respective portions of the electrical conduction path
are automatically connected without the need for further steps.
C. Illustrative Method
[0063] This section describes steps of an illustrative method 1200
for providing a laser sight for a handgun; see FIG. 12. Aspects of
laser sighting devices and systems described above may be utilized
in the method steps described below. Where appropriate, reference
may be made to components and systems that may be used in carrying
out each step. These references are for illustration, and are not
intended to limit the possible ways of carrying out any particular
step of the method.
[0064] FIG. 12 is a flowchart illustrating steps performed in an
illustrative method, and may not recite the complete process or all
steps of the method. Although various steps of method 1200 are
described below and depicted in FIG. 12, the steps need not
necessarily all be performed, and in some cases may be performed
simultaneously or in a different order than the order shown.
[0065] Step 1202 includes coupling a backstrap to a handgrip of a
handgun, the backstrap including a laser emitter and a
hand-operated switch coupled to the laser emitter. Coupling the
backstrap to the handgrip may be performed using any suitable
method, e.g., using an adhesive, a fastener, a retaining clip,
and/or the like. As described above, this step may include
inserting a pin through mutually-aligned holes in the backstrap and
in the handgrip.
[0066] Step 1204 includes inserting a battery holder and a battery
into an open-mouthed cavity of the handgrip of the handgun, the
open-mouthed cavity being disposed adjacent a magazine well of the
handgun. In some examples, method 1200 further includes securing
the battery holder to the handgrip by inserting a threaded fastener
through a second aperture in a rear wall of the handgrip and into a
threaded hole of the battery holder.
[0067] Step 1206 includes forming an electrical conduction path
from the battery to the laser emitter (e.g., automatically), such
that the switch is configured to activate the laser emitter by
selectively coupling the laser emitter to the electrical conduction
path. In some examples, forming the electrical conduction path
includes coupling a first portion of the electrical conduction path
disposed on the backstrap to a second portion of the electrical
conduction path disposed on the battery holder. In some examples,
the first portion of the electrical conduction path and the second
portion of the electrical conduction path are coupled outside the
open-mouthed cavity. The first portion of the electrical conduction
path may include first terminals configured to mate with second
terminals of the second portion of the electrical conduction
path.
[0068] In some examples, method 1200 further includes forming a
first aperture through a wall of the handgrip and into the
open-mouthed cavity. The first portion of the electrical conduction
path may then be caused to protrude through the first aperture and
into the open-mouthed cavity. Accordingly, the first portion of the
electrical conduction path and the second portion of the electrical
conduction path may be coupled inside the open-mouthed cavity.
D. Illustrative Combinations and Additional Examples
[0069] This section describes additional aspects and features of
laser sighting devices according to the present teachings,
presented without limitation as a series of paragraphs, some or all
of which may be alphanumerically designated for clarity and
efficiency. Each of these paragraphs can be combined with one or
more other paragraphs, and/or with disclosure from elsewhere in
this application, in any suitable manner. Some of the paragraphs
below expressly refer to and further limit other paragraphs,
providing without limitation examples of some of the suitable
combinations.
[0070] A0. A laser sighting device for a firearm, the laser
sighting device comprising: [0071] a backstrap configured to be
attachable to an external surface of a handgrip of a firearm, the
backstrap including a laser emitter and a manually-operated switch
configured to selectively activate the laser emitter; [0072] a
battery holder configured to be insertable into an open cavity
disposed adjacent a magazine well of the firearm; and [0073] an
electrical conduction path configured to electrically couple the
backstrap to the battery holder.
[0074] A1. The device of A0, the electrical conduction path
comprising a first electrical conduction path portion disposed on
the backstrap and a second electrical conduction path portion
disposed on the battery holder.
[0075] A2. The device of A1, wherein the first electrical
conduction path portion is at least partially disposed on an
elongate member extending from the backstrap, such that the
elongate member is configured to protrude into the open cavity of
the handgrip through an aperture formed in a wall of the
handgrip.
[0076] A3. The device of A1, wherein the first electrical
conduction path portion is configured to extend into the open
cavity.
[0077] A4. The device of A1, wherein the first electrical
conduction path portion comprises first terminals configured to
form an electrical connection with second terminals of the second
electrical conduction path portion.
[0078] A5. The device of A4, wherein the electrical connection is
disposed external to the handgrip.
[0079] A6. The device of A4, wherein the electrical connection is
disposed within the open cavity.
[0080] A7. The device of A0, wherein the electrical conduction path
is configured to form a circuit between the laser emitter and a
battery of the battery holder.
[0081] A8. The device of A0, further comprising a battery disposed
in the battery holder.
[0082] A9. The device of A0, wherein the backstrap and the battery
holder are permanently affixed to each other.
[0083] B0. A laser sighting device for a firearm, the laser
sighting device comprising: [0084] a backstrap including a laser
emitter, a first electrical conduction path, and a switch
configured to selectively connect the laser emitter to the first
electrical conduction path; and [0085] a battery holder including a
second electrical conduction path; [0086] wherein the laser
sighting device is transitionable between (a) an operational
configuration, in which the battery holder is inserted into an open
cavity of a handgrip of the firearm adjacent a magazine well of the
firearm, the backstrap is coupled to an external surface of the
handgrip, and the first electrical conduction path is electrically
connected to the second electrical conduction path, and (b) a
detached configuration, in which the battery holder and the
backstrap are separated from the handgrip.
[0087] B1. The device of B0, wherein the backstrap and the battery
holder form a unitary assembly in both the operational
configuration and the detached configuration.
[0088] B2. The device of B0, wherein the first electrical
conduction path of the backstrap includes first electrical
terminals, and the second electrical conduction path of the battery
holder includes second electrical terminals configured to mate with
the first electrical terminals.
[0089] B3. The device of B2, wherein the first electrical terminals
and the second electrical terminals are disposed within the cavity
of the firearm handgrip when the laser sighting device is in the
operational configuration.
[0090] B4. The device of B3, wherein the backstrap further
comprises an elongate member configured to pass through an aperture
in a wall of the firearm handgrip, and the first electrical
terminals are disposed on the elongate member.
[0091] B5. The device of B4, wherein battery holder further
comprises a jaw configured to receive the elongate member, and the
second electrical terminals are disposed on the jaw.
[0092] B6. The device of B5, wherein the jaw is resilient and
configured to circumferentially retain the elongate member.
[0093] B7. The device of B2, wherein the first electrical terminals
and second electrical terminals are connected to each other and
disposed external to the handgrip when the laser sighting device is
in the operational configuration.
[0094] C0. A firearm comprising: [0095] a handgrip including a
magazine well and a cavity having an open mouth adjacent the
magazine well; [0096] a removable backstrap coupled to the
handgrip, the backstrap including a laser emitter and a switch
configured to selectively activate the laser emitter; [0097] a
removable battery holder disposed in the cavity of the handgrip;
and [0098] an electrical conduction path electrically coupling the
battery holder and the switch of the backstrap.
[0099] C1. The firearm of C0, wherein the electrical conduction
path passes through a first aperture in a wall of the handgrip.
[0100] C2. The firearm of C1, the backstrap further comprising an
elongate member protruding through the first aperture, wherein a
first portion of the electrical conduction path is disposed on the
elongate member.
[0101] C3. The firearm of C2, the battery holder further comprising
a jaw configured to receive the elongate member, wherein a second
portion of the electrical conduction path is disposed on the
jaw.
[0102] C4. The firearm of C0, wherein the electrical conduction
path passes through the open mouth of the cavity.
[0103] C5. The firearm of C0, wherein the backstrap extends along
an entire length of the handgrip.
[0104] C6. The firearm of C0, wherein the battery holder is secured
to the handgrip by a fastener passing through a second aperture in
a wall of the handgrip.
[0105] C7. The firearm of C6, wherein the fastener comprises a
screw.
[0106] C8. The firearm of C0, wherein the firearm comprises a
pellet gun.
[0107] C9. The firearm of C0, wherein the firearm comprises a
handgun.
[0108] D0. A method of providing a laser sight for a handgun, the
method comprising: [0109] coupling a backstrap to a handgrip of the
handgun, the backstrap including a laser emitter and a
hand-operated switch coupled to the laser emitter; [0110] inserting
a battery holder and a battery into an open-mouthed cavity of the
handgrip of the handgun, the open-mouthed cavity being disposed
adjacent a magazine well of the handgun; and [0111] forming an
electrical conduction path from the battery to the switch, such
that the switch is configured to activate the laser emitter by
selectively coupling the laser emitter to the electrical conduction
path.
[0112] D1. The method of D0, wherein forming the electrical
conduction path comprises coupling a first portion of the
electrical conduction path disposed on the backstrap to a second
portion of the electrical conduction path disposed on the battery
holder.
[0113] D2. The method of D1, wherein the first portion of the
electrical conduction path and the second portion of the electrical
conduction path are coupled inside the open-mouthed cavity.
[0114] D3. The method of D2, further comprising forming a first
aperture through a wall of the handgrip and into the open-mouthed
cavity.
[0115] D4. The method of D3, further comprising causing the first
portion of the electrical conduction path to protrude through the
first aperture and into the open-mouthed cavity.
[0116] D5. The method of D1, wherein the first portion of the
electrical conduction path and the second portion of the electrical
conduction path are coupled outside the open-mouthed cavity.
[0117] D6. The method of D5, wherein the first portion of the
electrical conduction path comprises first terminals configured to
mate with second terminals of the second portion of the electrical
conduction path.
[0118] D7. The method of D0, wherein coupling the backstrap to the
handgrip comprises inserting a pin through mutually-aligned holes
in the backstrap and in the handgrip.
[0119] D8. The method of D0, further comprising securing the
battery holder to the handgrip by inserting a threaded fastener
through a second aperture in a rear wall of the handgrip and into a
threaded hole of the battery holder.
[0120] D9. The method of D0, further comprising removing the
battery holder from the cavity while the backstrap remains in place
on the handgrip (e.g., to replace the batteries).
[0121] D10. The method of D0, wherein forming the electrical
conduction path from the battery to the switch is automatic upon
completion of coupling the backstrap to the handgrip and inserting
the battery holder into the open-mouthed cavity.
Advantages, Features, and Benefits
[0122] The different embodiments and examples of the laser sighting
devices described herein provide several advantages over known
solutions. For example, illustrative embodiments and examples
described herein allow handgun handgrips of varying length to be
accommodated by a single size of backstrap, while varying the
length of the battery compartment. This simplifies the
manufacturing process.
[0123] Additionally, and among other benefits, illustrative
embodiments and examples described herein provide an easy to
install laser sighting device that takes advantage of an existing
aperture and cavity of known handguns.
[0124] Additionally, and among other benefits, illustrative
embodiments and examples described herein provides an
externally-mounted laser sighting device that has a power source
internal to the handgun.
[0125] Additionally, and among other benefits, illustrative
embodiments and examples described herein provide a laser sighting
device that is attachable and removable from the handgun using only
a screwdriver.
[0126] Additionally, and among other benefits, illustrative
embodiments and examples described herein provide a laser sighting
device that is attachable and removable from the handgun with
little or no modification to the handgun itself.
[0127] Additionally, and among other benefits, illustrative
embodiments and examples described herein have a backstrap and a
battery holder that are independently attachable and detachable
from the handgun, e.g., allowing the batteries to be changed
without removing the laser portion of the device. This avoids
causing misadjustment of the laser emitter.
[0128] Additionally, and among other benefits, illustrative
embodiments and examples described herein automatically connect the
respective electrical conduction paths of the backstrap and the
battery holder upon installation (i.e., without additional
connecting steps required). For example, in device 100 the
terminals match up and mate together automatically. In device 200,
mating of the member and jaw automatically connects the respective
electrical conductors.
[0129] No known system or device can perform these functions.
However, not all embodiments and examples described herein provide
the same advantages or the same degree of advantage.
CONCLUSION
[0130] The disclosure set forth above may encompass multiple
distinct examples with independent utility. Although each of these
has been disclosed in its preferred form(s), the specific
embodiments thereof as disclosed and illustrated herein are not to
be considered in a limiting sense, because numerous variations are
possible. To the extent that section headings are used within this
disclosure, such headings are for organizational purposes only. The
subject matter of the disclosure includes all novel and nonobvious
combinations and subcombinations of the various elements, features,
functions, and/or properties disclosed herein. The following claims
particularly point out certain combinations and subcombinations
regarded as novel and nonobvious. Other combinations and
subcombinations of features, functions, elements, and/or properties
may be claimed in applications claiming priority from this or a
related application. Such claims, whether broader, narrower, equal,
or different in scope to the original claims, also are regarded as
included within the subject matter of the present disclosure.
* * * * *