Pistol mounted light and operation thereof

Abstract

A flashlight for use with a pistol, the pistol having a trigger guard and a mounting rail. The flashlight includes an elongated housing having a spring arm clamping mechanism for mounting to the mounting rail, a light source at one end thereof, and paddle switches at an opposing end.

Claims

1. A flashlight comprising: a housing having a light source disposed at a first forward end thereof and further having a switching mechanism disposed at a second rearward end thereof, said housing having a longitudinal axis extending between said first and second ends thereof, and said housing having a recess; a fixed clamp arm extending longitudinally along a first side of the housing, said fixed clamp arm being fixed relative to the housing; a movable clamp arm extending longitudinally along a second side of the housing and slidably disposed within said recess of said housing, said fixed and movable clamps cooperating to engage a dovetail mounting rail; a spring band fixedly secured to said fixed clamp arm and extending laterally across said housing, said spring band extending through an opening in said movable clamp to moveably retain said movable clamp within said recess such that said movable clamp can laterally move and pivot within said recess; and a laterally extending actuator lever seated within an external cavity in said movable clamp arm, said actuator lever including a longitudinal retaining pin wherein a second end of said spring band is received around the retaining pin to fix the second end relative to said retaining pin, said actuator lever further including an offset camming pin adjacent said retaining pin, said cavity defining a cam follower surface wherein pivoting movement of the actuator lever causes camming action of the camming pin against the cam follower surface to move the movable clamp arm between an open position, a neutral position and a closed position.

2. The flashlight of claim 1, wherein said spring band includes an offset portion.

3. The flashlight of claim 1, wherein both the longitudinal retaining pin and the camming pin linearly translate relative to the longitudinal axis of the housing.

4. The flashlight of claim 1, wherein the entirety of the movable clamp translates relative to the longitudinal axis of the housing as the movable clamp moves between the open and closed positions.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Exemplary embodiments will now be described further by way of example with reference to the following examples and figures, which are intended to be illustrative only and in no way limiting upon the scope of the disclosure.

(2) FIG. 1 is a side view of one exemplary flashlight assembly;

(3) FIG. 2 is a front view thereof;

(4) FIG. 3 is a side view thereof while affixed to a handgun;

(5) FIG. 4 is a top view of the flashlight showing the clamping assembly;

(6) FIG. 5 is an exploded view of the switching assembly;

(7) FIG. 5a is a cross-sectional view of the switching assembly;

(8) FIG. 6 is a top view thereof;

(9) FIG. 7 is a side view of the flashlight showing another exemplary switching configuration;

(10) FIGS. 8a, 8b and 8c are cross sectional views taken along the line 8-8 of FIG. 7 depicting the operational positions of the exemplary clamping assembly;

(11) FIG. 9 is a perspective view of another exemplary embodiment of the flashlight including a selector switch and operational mode indicator LEDs;

(12) FIG. 10 is another perspective view thereof;

(13) FIG. 11 is still another perspective view thereof with the elastomeric cover exploded from the selector switch;

(14) FIG. 12 is a perspective view of the switching subassembly;

(15) FIG. 13 is an exploded perspective view thereof;

(16) FIG. 14 is a bottom perspective view of the rear circuit board, the selector switch circuit board and pogo pin; and

(17) FIG. 15 is a block diagram of the individual components.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

(18) Now referring to the drawings, one exemplary embodiment of the present flashlight assembly is shown and generally illustrated in FIGS. 1-8c.

(19) As can be seen in FIGS. 1-3, the flashlight assembly 10 includes a clamp interface 12 integrated into the housing 14 to facilitate mounting of the flashlight 10 to the dovetail rail 16 on a handgun 18. Generally, the outer body of the flashlight 10 includes a head 20 mounted to a flashlight housing 14 at one end and a switching mechanism 22 extending outwardly at the other end of the housing 14. The interface 12 comprises opposing clamping protrusions extending from housing 14.

(20) As depicted at FIG. 3, the handgun 18 generally includes an interface rail 16 for the mounting of auxiliary devices. The rail 16 is known in the art as a mil-spec 1913 rail. The rail 16 generally has a dovetail cross-sectional profile that extends below the barrel of the handgun ahead of the trigger 24. The clamping interface 12 is a seamless and integrated feature of the outer housing 14 of the flashlight itself and allows the flashlight to be securely mounted below the barrel forward of the trigger guard 30. In this manner, the actuator paddles 28 of the light extend rearward adjacent the trigger guard 30 and may protrude slightly beyond the trigger guard 30 to make them convenient to operate.

(21) As shown in the figures, the clamping interface 12 includes a fixed clamping arm 34, a second movable clamping arm 36 and a tightening mechanism 38 for tightening the movable arm 36 around the rail 16. The tightening mechanism 38 for the clamping arm 36 interface may be set screws, thumb screws, quick release type mechanisms or combinations thereof to allow easy mounting and demounting of the flashlight relative to the firearm. A cross bar 39 extends across the bottom of the housing and is received in positioning slots in the rail to prevent sliding of the light when mounted.

(22) The clamping interface 12 may alternatively be formed as a rigid profile that is simply slid onto the firearm accessory rail 16 and retained in place using setscrews.

(23) Turning to FIGS. 5 and 5a, the operation of the flashlight 10 of the present invention is highly ergonomic as compared to the flashlights of the prior art. Previously there was a toggle lever that the user had to awkwardly move up or down. This motion required the user to engage the lever laterally with their finger where there is little lateral muscle strength. Instead, the present invention employs a vertically oriented paddle switch 28 that is operated by the user pressing the pad of the user's trigger finger inwardly against a planar pad surface 29 of the paddle 28. Since this motion is coincident with the user's gripping motion (trigger pull motion) they have a great deal more strength, making operation intuitive and comfortable.

(24) The operation of the paddle switch 28 is about a vertically oriented hinge point 32 that allows the paddles to extend in a vertical orientation, rearwardly adjacent the trigger guard. The paddle 28 includes an actuator arm 31 that extends from the end opposing the pad surface 29 and into a cap 14A at the rear of the flashlight housing 14 to cause the light to operate. The paddle switch 28 is movable about the hinge point 32 between an unactuated position (shown on the left side of FIG. 5a) and an actuated position (shown on the right side of FIG. 5a). Springs 43 contained within the paddle 28 (See FIG. 5a) are captured between the paddle 28 and the housing 14A and normally bias the paddle 28 to the unactuated position (left side of FIG. 5a). As seen on the right side of FIG. 5a, the paddle actuator arm 31 flexes a water seal cap 35 and presses a switch 37 that is located on a circuit board 41 contained within the cap 35. The cap 14A and water seal cap 35 are held to the main housing 14 with screws 33.

(25) Returning to FIG. 2, within the head portion 20 there is a composite heat sink/reflector assembly 40 to collect and dissipate the waste heat generated during operation of the flashlight. Adjacent a rear surface of the heat sink 40 is positioned a circuit board (not shown) that includes at least one LED positioned thereon. In the exemplary embodiment the LED is a visible white LED 42 positioned centrally within the reflector 40. Optionally, there may be one or more infra-red LEDs (not shown) positioned adjacent the white LED 42 and at the periphery of the opening in the reflector. A selector switch (not shown) may be provided on the light to toggle between visible and infrared modes. The switches and LEDs are controlled by a central processor (not shown) having control software for operation of the LEDs and various control switches.

(26) It is known that different configurations of mounting rails 16 employ positioning slots that vary in width. To accommodate these variations, the fixed side of the clamping assembly 34 is modular and removable. In this manner the fixed side of the clamping assembly 34 can be removed along with the cross bar 39 and replaced with an alternate piece 34a/39a having a cross bar of a different width. In this manner, the interchangeable clamping assemblies 34/34a can be removed and replaced simply by removing and replacing two screws 46 or other appropriate fasteners.

(27) A further exemplary embodiment is shown at FIG. 7 where, to provide a selector switch, the paddle switch 28 may be broken into two switches such that a first paddle switch 28a operates the light and a second paddle switch 28b functions as a selector switch. In this manner a user can easily control the function of the light 10 using the paddles 28. It is preferred that the paddles operate in an ambidextrous or duplicate fashion such that the left and right paddles 28 each function the same as its counterpart. This allows comfortable use on a handgun regardless of the shooter's handedness.

(28) Further, the flashlight may include a laser sighting module in either visible red or green, infrared or a combination thereof.

(29) The operation of an exemplary clamping mechanism is depicted at FIGS. 8a, 8b and 8c. The clamp at FIG. 8a is shown fully engaged. A clamping force is generated by a lever arm 38 drawing tension against a spring band 50 that has a first end pinned with screw 52 beneath the fixed clamp 34. The spring band 50 extends across the clamping assembly and through a slot in the movable clamp 36. The actuator lever 38 includes a retainer pin 56 and a second rolled end of the spring band is received around the pin 56. The lever arm 38 sits within a cavity formed in the movable clamp 36. The inner surface of the cavity within movable clamp 36 forms a follower surface 58 for a camming action of a camming pin 48 on the lever arm 38. As the lever arm 38 is pivoted inwardly against the body of the flashlight, the offset camming pin 48 on the lever 38 presses the follower surface 58 of the movable clamping arm 36 against the firearm accessory rail. An offset angle portion 54 of the spring band 50, in combination with an elevational offset in the camming pin 48 and retainer pin 56 causes a tactile snap engaging force as the lever 38 is rotated and the clamp is engaged. These offsets cause the clamp to snap shut and serves to retain the lever arm 38 in a closed position.

(30) As can be seen at FIG. 8b, as the lever arm 38 is opened against the spring force, the lever arm 38 comes to a neutral position once the retainer pin 56 is displaced above the roller pin 48 allowing the spring force generated by the two offsets to be released. In this neutral position, while the movable clamping arm is still substantially closed, the clamping force is released.

(31) Finally, at FIG. 8c, the lever arm 38 is lifted upwardly such that the camming pin 48 presses down on the lower follower surface 58 of the movable clamping arm 36 causing it to displace outwardly relative to the flashlight body. This displacement causes the clamping arm 36 to open and allows the flashlight to be installed onto or removed from the firearm accessory rail.

(32) Turning to FIGS. 9-15, another exemplary embodiment of the flashlight is shown and generally indicated at 100. Generally, the flashlight 100 has both white and IR LEDs, a selector switch 106 on the bottom of the housing, and indicator LED's corresponding to the white and IR LEDs to visually indicate the current operational mode of the light.

(33) The flashlight 100 comprises a housing 102 having a first light source (white LED) 104 and a second light source (IR LED) 106 at one end thereof and a switching mechanism 108 disposed at the opposing end thereof. A selector switch 110 for controlling an operational mode of the flashlight 100 is located on the bottom surface of the housing 102 and is operable to select a first operating mode wherein the first light source (white LED) 104 is selected for illumination, and a second operating mode wherein said second light source (IR LED) 106 is selected for illumination.

(34) The flashlight 100 further includes a first color indicator light (white or yellow LED) 112 corresponding to the first light source (white LED) 104 which is operable for visually indicating the first operating mode and a second color indicator light (red LED) 114 corresponding to the second light source (IR LED) 106 which is operable for visually indicating the second operating mode.

(35) A clamping assembly generally indicated at 116 extends from the top of the housing 102 and when mounted on a handgun 18, the switching mechanism 108 is located adjacent a forward end of the trigger guard 30.

(36) Consistent with the other exemplary embodiments, the switching mechanism 108 includes a switch 118 and a paddle actuator 120. The paddle actuator 120 has a pad surface 122 at one end thereof and an actuator arm (see FIG. 5A) at an opposing end thereof. The paddle actuator 120 is mounted on a vertically oriented hinge pin 124 whereby the pad surface 122 extends rearwardly adjacent to the side of a forward end of the trigger guard 30. As in the other exemplary embodiments, the paddle actuator arm flexes a water seal cap and presses switch 118 that is located on a main circuit board 126 contained within a rear cap 128. In the exemplary embodiment, there are two symmetrical paddle switches 118 and paddles 120 which operate independently so that the light 100 is symmetrically functional for both left-handed and right-handed shooters.

(37) In use, the paddle actuator 120 is hingeably movable in a side-to-side motion (trigger pull motioninwardly toward the trigger guard) between an unactuated position where the actuator arm is spaced from the switch 118, and an actuated position where the actuator arm engages and activates the switch 118. The switching mechanism 108 further includes a coil spring (See FIG. 5A) captured between the paddle actuator 120 and the housing 102 normally biasing the paddle actuator 120 to the unactuated position.

(38) Turning to FIG. 11-14, there is shown the selector switch assembly 110, which generally comprises a dome switch 132 mounted on a secondary circuit board 132 extending longitudinally along the bottom of the housing 102. As seen in FIG. 11, the dome switch 132 is accessible through an opening in the bottom of the housing 102 and resides beneath a rubberized cover 136. To connect the switch contacts of the dome switch 132 to the main circuit board 126 a first contact pad 138 on the inner surface of the circuit board 134 engages a metallic battery tube 140, which in turn engages a contact pad 142 on the rear surface of the main circuit board 126. A second contact pad 144 is engaged by a biased pogo pin 146 extending from another contact pad 148 on the rear surface of the main circuit board 126. When assembled, pressure on the dome switch 132 closes the circuit providing a control signal to the main circuit board 126.

(39) The switches 118, LEDs 104,106 and indicator LEDs 112,114 are controlled by a central processor 150 having control software for operation of the LEDs and various control switches, and the system is powered by a battery 152 received in the battery tube.

(40) With this arrangement, the flashlight 100 is operable in the first operating mode when the selector switch 110 indicates the first mode and the paddle actuator 120 is selectively moved to the actuated position, and further the flashlight 100 is operable in a second operating mode when the selector switch 110 indicates the second mode and the paddle actuator 120 is selectively moved to the actuated position.

(41) When the light is OFF, pressing either of the paddle switches 120 will turn the currently selected LED on (104 or 106). To see the currently selected mode when the light is OFF, the user presses once on the selector switch 110 to illuminate or flash the indicator LED (112 or 114) of the currently selected mode, i.e. white. Pressing the selector switch 110 again within 2 second will change the mode to IR, and flash or illuminate the other indicator LED to indicate the change in mode to IR. Pressing the selector switch 110 again after 2 second will now illuminate the currently selected mode (which is now IR). When the light is ON, pressing the selector switch 110 will immediately toggle the current mode to the other mode.

(42) It can be seen that the exemplary embodiments provide a multi-functional flashlight construction that is easier to operate and that exhibits a high degree of reliability even in the most rugged environment. For these reasons, the instant invention is believed to represent a significant advancement in the art, which has substantial commercial merit.

(43) While there is shown and described herein certain specific structure embodying the invention, it will be manifest to those skilled in the art that various modifications and rearrangements of the parts may be made without departing from the spirit and scope of the underlying inventive concept and that the same is not limited to the particular forms herein shown and described except insofar as indicated by the scope of the appended claims.