# Patent

## Title
Dog flashlight kit

## Abstract

A dog flashlight illuminates the area in front of a dog in dark conditions, thereby eliminating the need for a dog owner to carry and direct a light source. The dog flashlight includes a housing containing at least one light source, a battery power supply for the light source, and a switch connected between the light source and the power supply for energizing and de-energizing the light source. When energized, the light source has sufficient brightness to illuminate the area in front of the dog so that the dog owner can observe the illuminated area for control purposes. One preferred embodiment includes an attachment device having a band carrying the housing and adapted to fit around the neck of the dog so that the housing is located in front of the chest of the dog.

## Background
CROSS-REFERENCE TO RELATED APPLICATION
This application claims the benefit of Provisional Application No. 60/590,817 entitled “ ” “UNIVERSAL PET COLLAR” filed on Jul. 22, 2004, which is hereby incorporated by reference in its entirety.
This application is a continuation-in-part of pending application Ser. No. 10/749,708 filed Dec. 31, 2003 now U.S. Pat. No. 7,008,075 and entitled “A SAFETY FLASHLIGHT FOR DOGS.”


FIELD OF THE INVENTION
The present invention relates generally to a safety flashlight for dogs and their owners and, more particularly, to a lightweight device that is attachable to the neck of a dog, and that contains at least one light source for the purpose of illuminating a region in front of the dog and making the dog visible.
SUMMARY OF THE INVENTION
In accordance with the present invention, there is provided a dog flashlight kit comprising a flashlight having a housing containing at least one light source and forming a cavity to receive a battery power supply for the light source. A switch is connected between the light source and the battery cavity for energizing and de-energizing the light source when a battery is placed in the cavity. A band is adapted to carry the housing and to surround the neck of a dog so that the housing is located in front of the chest of the dog. The band includes two segments with each segment having mating connector elements at opposite ends thereof so that opposite ends of either segment may be attached to each other or to opposite ends of the others segment to form bands of different lengths.
In the preferred embodiment, at least one of the band segments is adjustable in length, and preferably both segments are adjustable. Both band segments are also preferably made of an elastic material so they can be easily put around the dog's head and taken off.



BRIEF DESCRIPTION OF THE DRAWINGS
The invention may best be understood by reference to the following description taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a perspective view of a dog wearing a dog flashlight, according to one embodiment of the present invention,
FIG. 2 is an enlarged front perspective view of the dog flashlight shown in FIG. 1,
FIG. 3 is a bottom perspective view of the dog flashlight of FIGS. 1 and 2,
FIG. 4 is a rear perspective view of the dog flashlight of FIGS. 1-3,
FIG. 5 is a front perspective of the dog flashlight of FIGS. 1-4 attached to an elastic band adapted to fit around a dog's neck,
FIG. 6 is a perspective view of the interior of the front section of the dog flashlight of FIGS. 1-5,
FIG. 7 is the same perspective view shown in FIG. 6 with the batteries removed,
FIG. 8 is a perspective view of the front side of the circuit board contained in the front section of the dog flashlight of FIGS. 1-7,
FIG. 9 is another perspective view of the front side of the circuit board contained in the front section of the dog flashlight of FIGS. 1-7, with the lens removed,
FIG. 10 is an electrical schematic of the electrical circuit contained in the dog flashlight of FIGS. 1-9,
FIG. 11 is a diagrammatic front elevation of a dog flashlight for attachment to a dog collar, according to another modified embodiment of the invention,
FIG. 12 is diagrammatic side perspective of the dog flashlight of FIG. 11,
FIG. 13 is a diagrammatic front perspective of a dog flashlight integrated into a dog collar, according to another modified embodiment of the invention,
FIG. 14 is a diagrammatic front elevation of a dog flashlight that includes a hair guard, according to another modified embodiment of the invention,
FIG. 15 is a diagrammatic side perspective of the dog flashlight of FIG. 14,
FIG. 16 is a diagrammatic front elevation of a dog flashlight incorporating four LED light sources, according to another modified embodiment of the invention,
FIG. 17 is a diagrammatic side perspective of the dog flashlight of FIG. 16,
FIG. 18 is a diagrammatic front elevation of a dog flashlight incorporating five LED light sources, according to another modified embodiment of the invention,
FIG. 19 is a diagrammatic side perspective of the dog flashlight of FIG. 18,
FIG. 20 is a diagrammatic front elevation of a dog flashlight incorporating six LED light sources, according to another modified embodiment of the invention,
FIG. 21 is a diagrammatic side perspective of the dog flashlight of FIG. 20,
FIG. 22 is a diagrammatic front perspective of a dog flashlight integrated into a dog collar with four LEDs, according to another modified embodiment of the invention,
FIG. 23 is a diagrammatic front perspective of a dog flashlight integrated into a dog collar with five LEDs, according to another modified embodiment of the invention, and
FIG. 24 is a diagrammatic front perspective of a dog flashlight integrated into a dog collar with six LEDs, according to another modified embodiment of the invention.
FIG. 25 is a plain view of one part of a two-part adjustable band for use with a dog flashlight, according to an embodiment of the invention;
FIG. 26 is a plain view of the second part of a two-part adjustable band for use with a dog flashlight, according to an embodiment of the invention;
FIG. 27 is a diagrammatic side perspective of an adjustable band for use with a dog flashlight, according to a modified embodiment of the invention; and
FIG. 28 is a perspective view of a kit containing the assembly shown in FIG. 2 and the two band segments shown in FIG. 26.



DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENTS
Although the invention will be described next in connection with certain preferred embodiments, it will be understood that the invention is not limited to those particular embodiments. On the contrary, the description of the invention is intended to cover all alternatives, modifications, and equivalent arrangements as may be included within the spirit and scope of the invention as defined by the appended claims.
Turning now to the drawings, and referring initially to FIGS. 1-5, a dog flashlight 10, according to one embodiment of the present invention, includes a housing 11 made of molded plastic material and adapted to be attached to the neck of a dog (see FIG. 1). The housing includes a front section 12 and a rear section 13 which mate to form an internal cavity to contain the components described below. The front section 12 and the rear section 13 are molded, along their respective joining internal edges, to form a snap fitting of the kind well known in the state of the art. The front and rear sections 12 and 13 may thus be easily taken apart for access to the internal cavity. Alternatively, the two parts may be joined by an integral “living hinge” on one side and form an integral snap-type latch on the opposite side to hold the two sections 12 and 13 together.
The front housing section 12 forms a substantially oval aperture 14 for receiving a translucent or transparent lens 15 through which light from sources inside the housing can be transmitted forwardly from the housing. In the illustrative embodiment, the front housing section forms upper and lower rims 16 and 17 along the upper and lower edges of the aperture 14 to prevent light from being transmitted straight up or down from the aperture. The ends of the aperture, however, are unobstructed so that light can be transmitted laterally directly from the end edges of the aperture 14.
The illustrative dog flashlight 10 forms a unit that may be made small and compact for ease of packaging, handling and use, and to reduce cost. For example, one preferred embodiment uses a housing of approximately 21⁄8 inches in the x dimension, 15⁄8 inches in the y dimension and approximately 7⁄8 inches thick or deep. It will be understood, however, that the dimensions of the housing may be varied for different shapes and designs.
A hinge section 20 is molded as an integral part of the rear housing section 13, and mates with a complementary hinge section 21 formed as an integral part of an attachment clip 22. A pin 20a is inserted through the two hinge sections 20 and 21 to hold them together while permitting rotational movement of the two hinge sections relative to each other. The opposed surfaces of the two hinge sections 20 and 21 that move relative to each other are roughened to increase the friction between those surfaces, to inhibit swinging movement of the housing 11 and thereby improve the stability of the light beam. Thus, the angular position of the housing 11 can be adjusted relative to the clip 22 to optimize the illuminated area in front of the dog, and the housing will remain in the selected position. The hinge also permits the housing to be rotated 180 degrees so that it lies flat against the clip 22 before the clip is attached to the band used to attach the housing to the dog, thereby providing a shorter unit for use on smaller dogs.
The clip 22 also forms a pair of T-shaped slots 23 and 24 opening through opposite edges of the clip for receiving and holding a band 25 (see FIG. 6) adapted to fit over a dog's neck. The band 25 is preferably made of an elastic material so that it can be used with dogs of varying sizes. When the band 25 is put around the neck of a dog, the band is preferably located below any collar worn by the dog, so as to minimize blockage of light by the dog's snout.
As can be seen in FIG. 5, the housing 11 depends from the bottom edge of the clip 22, and the lens 15 is located toward the lower end of the housing 11, so that the light emanates from the lens a couple of inches or more below the band 25. This helps avoid blockage of the light by the dog's snout.
An on/off switch 30 is located on the bottom of the front housing section 12. A pattern area 31 and a lip 32 are molded into the housing to provide finger and thumb surfaces that can be felt and gripped when opening the housing 11 to change batteries or to access the interior of the housing for other purposes such as to replace the light sources.
FIG. 6 shows the interior of the front housing section 12, which contains an internal circuit board 40. Three 1.5-volt alkaline batteries 41, 42 and 43 are mounted on the rear side of the circuit board 40, making contact with three pairs of conventional battery terminals 44a and 44b, 45a and 45b, and 46a and 46b attached to the circuit board 40. FIG. 7 is the same view as FIG. 6 with the batteries removed to more clearly show the battery terminals and their attachments to the circuit board 40.
FIGS. 8 and 9 show the circuit board 40 without the housing. It can be seen that the lens 15 is mounted on the front side of the board 40, and three light emitting diodes (LEDs) 47, 48 and 49 are mounted on the board directly below the lens 15 (see FIG. 9). The center LED 48 is positioned to emit a light beam directed straight forward, while the two side LEDs 47 and 49 are positioned to emit light beams directed slightly outwardly on opposite sides of the dog's snout. The LEDs preferably emit white light with about 10,000 medium intensity. This combination of light beams is capable of illuminating an area extending as far as 200 feet in front of the dog, with a beam width that is at least 5 feet wide at a distance of about 10 feet in front of the dog. It will be understood that the LEDs may be varied in both number and size, but it is preferred that the source or sources be sufficient to illuminate an area extending at least 10 feet, most preferably at least 20 feet, in front of the dog.
An incandescent lamp 50 is also mounted on the front side of the board 40, for a purpose to be described below. Finally, the on/off switch 30 is also mounted on the front side of the board 40, adjacent the bottom edge of the board.
FIG. 10 is a schematic diagram of the electrical circuit provided the circuit board 40 to interconnect the various components mounted thereon. The three 1.5-volt alkaline batteries (AAA) 41-43 are electrically connected in series to provide 4.5 DC volts to the circuit through a sliding SPST on/off switch 30. The three white LEDS 47-49 are connected in parallel with each other and in series with the switch 30 so that all three LEDs are illuminated when the switch 30 is turned closed. The incandescent, tungsten-filament lamp 50, of the kind used for ornamental lighting, e.g., as in Christmas tree light string, is used as a constant current ballast resistor in the circuit. The current flowing through the tungsten filament of the lamp 50 varies with the available voltage from the batteries 41-43 due to the positive temperature coefficient of the filament, thereby providing a substantially constant amount of current to the LEDs 47-49. By using the incandescent lamp 50 as a variable resistor, the life of the batteries is extended and the intensity of the white LEDs 47-49 is more uniform over the life of the batteries 41-43.
FIGS. 11 and 12 illustrate a modified embodiment of the invention for attachment directly to a dog collar 100. This embodiment utilizes three LEDs 101-103 with the center LED 102 emitting a light beam directed straight forward and slightly upwardly, and with the two end LEDs emitting light beams directed upwardly and outwardly to avoid blockage from the dog's snout. The dog collar 100 passes through loops 104 on the rear wall of the flashlight housing 105.
When LEDs attached directly to a dog collar are slanted up, the nose of the dog gets in the way and forms a shadow. Therefore, the middle LED 102 is set straight so that it shines down on the ground in front of the dog, and the two side LEDs 101 and 103, which are spaced approximately an inch from the middle LED 102, are slanted upwardly so that they shine straight around the dog's nose.
Turning now to FIG. 13, a dog collar flashlight 110, according to another embodiment of the present invention, is embedded in a dog collar 111. Three LEDs 112-114 are utilized. The battery power source and on/off switch are not visible in this view.
FIGS. 14 and 15 show a dog collar flashlight 120, according to another embodiment of the present invention, fitted with rims 121 and 122 that act as hair guards to keep the dog's hair from obscuring the three LEDs 123-125.
FIGS. 16 and 17 show a dog collar flashlight 130 similar to the embodiment of FIG. 13 but using four LEDs 131-134. The two center LEDs 132 and 133 shine in a forward direction, providing more illumination directly in front of the pet wearing the collar 135. FIGS. 18 and 19 show a similar dog collar flashlight 140 having five LEDs 141-145. The center LED 143 shines straight forward, while the LEDs 141 and 142 illuminate the area to the pet's left side and the LEDs 144 and 145 illuminate the area to the pet's right side.
FIGS. 20 and 21 show a dog collar flashlight 150 having six LEDs 151-156. The center LEDs 153 and 154 illuminate the area directly ahead of the pet while the side LEDs illuminate the respective side areas of the pet wearing the collar flashlight 150.
FIG. 22 shows a dog collar flashlight 160 embedded in a dog collar 161 and utilizing four LEDs 162-165. The two central LEDs 163 and 164 shine forward, while the two peripheral LEDs 162 and 165 shine up and out towards their respective sides.
In FIG. 23, a dog collar flashlight 170 embedded in a dog collar 171 uses five LEDs 172-176. The central LED 174 shines forward, while the four peripheral LEDs 172-173 and 175-176 shine up and out towards their respective sides. FIG. 24 shows a similar arrangement utilizing six LEDs 180-185. The central LEDs 182-183 shine directly forward, while the peripheral LEDs 180-181 and 184-185 shine up and out towards their respective sides.
FIGS. 25 and 26 illustrate a two-part band 200 that can be sold with the dog flashlight to accommodate virtually all sizes of dogs. The band 200 comprises two adjustable bands 201 and 202 of different lengths, with mating male and female clip elements 201a, 201b and 202a, 202b attached to opposite ends of the respective bands. The male element 201a or 202a of either band 201 or 202 also mates with the female element 201b or 202b of the other band 201 or 202, i.e., the male elements 201a and 202a are interchangeable, and the female elements 201b and 202b are also interchangeable. Each band 201 and 202 is also made adjustable in length by using a glide/slide 203 or 204 that allows the band to double up to shorten the band, or to be extended to a single layer to lengthen the band.
The flashlight may be used with either band 201 or 202 alone for dogs having small necks. For dogs with larger necks, the two bands may be connected in series with each other, to form a larger-diameter band. Thus, the two separate bands 201 and 202, combined with the adjustability of each band, permits the user to choose a desired size from a wide range of possibilities. The circumferences of dogs' necks typically vary within a range extending from about 6 inches to about 26 inches, but it is advantageous to package the dog flashlight with a universal band that will accommodate dogs of all sizes. For example, having a single package that accommodates all sizes reduces inventory, shelf space and manufacturing costs.
Any desired fabric may be used to form the bands 201 and 202, such as cotton, nylon, polyester or polypropylene. The bands 201 and 202 are preferably made of an elastic material to facilitate applying the band around a dog's neck, and also removing it from the dog.
Another simpler way to make a dog collar 212 that fits all dogs is to make a long band 210. approximately 28′′, the ends of which are clamped together at 211 to fit the size of the dog's neck. See FIG. 27. The excess band could be cut to the desired length. While particular embodiments and applications of the present invention have been illustrated and described, it is to be understood that the invention is not limited to the precise construction and compositions disclosed herein and that various modifications, changes, and variations may be apparent from the foregoing descriptions without departing from the spirit and scope of the invention as defined in the appended claims.

## Claims

1. A method of illuminating the area in front of a collared dog in dark conditions, eliminating the need for a dog owner to carry and direct a light source, comprising:
attaching to the neck of the collared dog a housing containing at least one light source, a battery power supply for said light source, and a switch connected between said light source and said power supply for energizing and de-energizing said light source,
said housing being attached to the neck of said dog by an adjustable band below the collar on the dog so that said housing and light source are located in front of the chest of the dog below the collar on the dog so that said light source is located substantially below the snout of said dog to minimize blockage of light by the dog's snout, said light source being oriented to direct light onto the ground and forwardly well in front of the dog from below the dog's snout, said band being adjustable to fit around the necks of dogs of different sizes,
said light source comprising three laterally spaced light emitting diodes, the two outboard diodes oriented to direct light forwardly past opposite sides of the dog's snout, and the central diode oriented to direct light forwardly and downwardly, wherein said light source, when energized, is of sufficient brightness to illuminate the area in front of said dog so that said dog owner can observe the illuminated area for control purposes.

2. The method of claim 1 wherein said light source illuminates an area extending at least about 10 feet in front of the dog.

3. The method of claim 1 wherein said light source illuminates an area extending at least about 20 feet in front of the dog.

4. The method of claim 1 wherein said diodes are white light emitting diodes.

5. The method of claim 1 wherein said light source emits a light beam that has a width of at least about 5 feet at a distance of about 10 feet in front of said dog.

6. The method of claim 1 wherein said adjustable band is an elastic band attached to said housing.

7. A method of illuminating the area in front of a collared dog in dark conditions, eliminating the need for a dog owner to carry and direct a light source, comprising:
attaching to the neck of the collared dog a band surrounding the neck of the dog and attached to a connector having an upper end configured to fit over said band and a lower end forming a hinged connection to a housing containing at least one light-emitting diode as a light source, a battery power supply for said light source, and a switch connected between said light source and said power supply for energizing and de-energizing said light source,
said housing being attached to the neck of said dog by a band below the collar on the dog so that said housing and light source are located in front of the chest of the dog below the collar on the dog so that said light source is located substantially below the snout of said dog to minimize blockage of light by the dog's snout, said light source being oriented to direct light onto the ground and forwardly well in front of the dog from below the dog's snout, said band being adjustable to fit around the necks of dogs of different sizes,
wherein said light source, when energized, is of sufficient brightness to illuminate the area in front of said dog so that said dog owner can observe the illuminated area for control purposes.