Abstract: A portable light may comprise: a generally rectangular light body having a pair of opposing extensions or projections thereon, the light body having a generally rectangular cavity for receiving a source of electrical power therein; a generally cylindrical light head rotatably supported between the extensions of the light body adjacent the light body, the light head including a light source for producing light; and a switch for selectively actuating the light source. The light may include interchangeably a generally rectangular battery or a plural cylindrical batteries, and the battery or batteries may be rechargeable.

Abstract: A system may comprise a portable light and a receiver therefor. The portable light for illuminating may comprise: a light source, a housing supporting the light source, a processor selectively energizing the light source from an electrical power source to produce illumination, a switch controlling the processor, and a memory storing data relating to the portable light, wherein the processor modulates the light source responsive to the stored data. The receiver receiving data transmitted by the portable light may comprise: a receiver housing including a light sensitive receiver receiving data emitted by the light source; and a receiver processor reproducing a representation of the data stored in the memory and providing the decoded received data for perception by a human and/or for use by a computing device.

Abstract: A set of interchangeable keying members for keying a body that is mountable on mounting rails having keying features of different sizes and shapes, wherein the members of the set may each comprise: a key body for being disposed in a recess of the body and having a keying feature that corresponds to the keying feature of the mounting rail for engaging the keying feature of the mounting rail when the body is mounted thereto. The size, or shape, or position, or a combination thereof of the keying feature of each of the keying members of the set of keying members may be different and correspond to a keying feature of a mounting rail.

Abstract: An electrical light or flashlight may comprise: a housing for receiving a battery; an electrical light source in the housing; an electrical switch including an electrically conductive flexible dome providing a switch contact; a controller for selectively energizing and de-energizing the electrical light source, wherein said controller is programmable responsive to closures or openings or both of the electrical switch, or to a time therebetween, or to continuous closure or opening thereof, or to a combination thereof, for operating the light source in predetermined operating states.

Abstract: An electronic adapter circuit for charging and/or recharging a battery of a first battery type utilizing a charging device for a battery of a second different battery type, may comprise: an electronic circuit for controlling the charging of the battery of the first battery type when the battery of the first type is charged by the battery charging device, wherein the electronic circuit has high conductivity when the battery of the first type provides electrical power to a load, and has a reduced conductivity for limiting charging of the battery of the first type when it is charged by the battery charging device. The electronic circuit may include a controllable conductivity device having high conductivity when the battery of the first type provides power to a load, and a battery charging control circuit for reducing the conductivity of the controllable conductivity device for limiting the charging of the battery.

Abstract: A light device is provided that includes a light source and electrical circuitry for supplying electrical power to the light source. The light device also includes a housing having first and second ends and a hollow interior defining a compartment for holding a power source. The housing comprises a woven fiber thermoset composite. The housing is made by applying woven fibers to a mandrel and impregnating the woven fibers with an epoxy and curing the epoxy impregnated woven fibers to form the thermoset composite housing. An electrical interconnect is provided within the housing having first and second resilient contacts for providing an electrical connection between the power source and the light source.

Abstract: A light device is provided that includes a light source and electrical circuitry for supplying electrical power to the light source. The light device also includes a housing having first and second ends and a hollow interior defining a compartment for holding a power source. The housing comprises a woven fiber thermoset composite. The housing is made by applying woven fibers to a mandrel and impregnating the woven fibers with an epoxy and curing the epoxy impregnated woven fibers to form the thermoset composite housing. An electrical interconnect is provided within the housing having first and second resilient contacts for providing an electrical connection between the power source and the light source.

Abstract: A rechargeable flashlight is also provided. The flashlight includes a housing having a battery compartment and a light source adjacent a first end of the housing. A rechargeable lithium-ion battery provides power for the flashlight. A controller circuit serially connected with the battery is operable to control the flow of electricity to and from the battery. Specifically, the controller circuit is operable to disconnect the lithium-ion battery cell from the light source in response to the charge in the lithium-ion battery depleting below a pre-determined lower threshold. The control circuit is further operable to disconnect the lithium-ion battery cell from electrical connection with the first charging contact when the lithium-ion battery is connected with a battery charger and the charge in the lithium-ion battery reaches a pre-determined upper threshold.

Abstract: A method for making a flashlight housing comprises providing a blank of an electrically conductive material, impact extruding the blank of electrically conductive material to form an elongated hollow member that has an internal cavity open at a first end and that has a reduced inner diameter portion proximate a second end thereof, and coating the elongated hollow member with a coating material. The flashlight housing may have a tail cap, and may have O-rings for sealing at the rearward end of the tail cap, at the forward end of the housing, and/or at the interface between the housing and the tail cap.

Abstract: A keyed mounting arrangement for a light or other object mountable on a mounting rail having a keying feature may comprise a body containing operating elements; a clamping arrangement including clamp members on the body for clamping and releasing the mounting rail; and a keying member removably disposed in a recess located on the body in a predetermined location and having a keying feature that engages the keying feature of the mounting rail when the body is clamped to the mounting rail. Where the object is mountable on mounting rails having keying features of different sizes and shapes, the keying member may be selected from a set of keying members for having a keying feature of a size and shape that corresponds to the size and shape of the keying feature of the mounting rail.

Abstract: An electrical light or flashlight may comprise: a housing for receiving a battery; an electrical light source in the housing; an electrical switch including an electrically conductive flexible dome providing a switch contact; a controller for selectively coupling electrical power from a battery to the electrical light source, responsive to the electrical switch for selectively energizing and de-energizing the electrical light source, wherein said controller is programmable responsive to closures or openings or both of the electrical switch, or to a time therebetween, or to continuous closure or opening thereof, or to a combination thereof, for operating the light source in predetermined operating states, and wherein the light source is selectively energizable and de-energizable in predetermined operating states responsive to the electrical switch.

Abstract: An adapter for replacing an original battery, light or battery powered device utilizing a battery of a first type with a replacement battery light or battery powered device utilizing a battery of a second and different type may comprise first terminals configured similarly to terminals of an original battery, light or battery powered device, second terminals for connecting to a replacement battery, light or battery powered device, and an electronic circuit for controlling charging of the battery of the replacement battery, light or battery powered device connected to the second terminals when a battery charging device for a battery of the first type is connected to the first terminals.

Abstract: An LED light may comprise a light emitting diode selectively energizable for producing light; an electronic circuit for selectively energizing the light emitting diode; and a heat sink of a thermally conductive material, wherein the light emitting diode is thermally bonded to the heat sink; and wherein the electronic circuit is attached to the heat sink. The light may have a pair of contact springs extending from the heat sink and the electronic circuit may include thermal conductivity enhancing features.