Abstract: A portable, hand held light source unit is employed to check operation of fire detectors, such as hydrogen fire detectors. The unit emits radiation in a narrow band of wavelengths which are generated by the type of fire to be tested, but not by other light sources such as the sun or incandescent lamps. The unit can test fire detectors at different distances, and of different sensitivities. The intensity of the radiation emitted by the unit is adjustable for this purpose by means of a rotatable disk having a plurality of different sized apertures for selective placement between the light source and an output lens. The disk can also be rotated to a calibration position which causes a microprocessor circuit in the unit to initiate a calibration procedure. During this procedure, the lamp intensity is measured by a photodetector contained within the unit, and the microprocessor adjusts the lamp current to insure that its intensity remains within a preset range of values.

Abstract: A sighting device positionable in the end of the bore of a shotgun which emits a beam of light which simulates a shot pattern. The device has a tubular body which is held in the bore by a biasing spring. The body includes a light source, preferably a laser diode, which emits a beam. The beam may be focused at an adjustable lens and may be adjusted so the beam of light is aligned with the axis of the bore. An actuating switch may be secured to a finger of the user or to the shotgun.

Abstract: An illuminator device for a night vision apparatus, the illuminator device providing supplemental illumination of remotely located objects to be viewed through the night vision apparatus under a low light condition. The illuminator device comprises a housing, light source coupled to one end of the housing for generating a light to illuminate the remotely located objects. The illuminator device further comprises focusing lens for condensing the light generated by the light source into a concentrated light beam having a pattern of consistent brightness which enables substantially long range illumination. The focusing lens is located a given distance away from the light source in a location which is remote from the end of the housing.

Abstract: A device for a battery with a spacer preventing direct physical contact between first and second batteries arranged in physical series. A resilient conductor providing an electroconductive contact between a center electrode of the first battery and a terminal electrode of the second battery is held by the spacer.

Abstract: A light assembly for a bicycle that comprises a power source, configured to be positioned within either the handlebars of the bicycle or bar end members attached to the handlebars of the bicycle, and a light source that is adjustable by the user. In one embodiment, the light assembly is positioned at either end of the handlebars and are independently adjustable about two orthogonal axes to allow the bicyclist to illuminate two different regions in the path of travel of the bicycle. In a second embodiment, the light assembly is positioned at the outer end of either of the bar end members attached to the handlebars and are independently adjustable about two orthogonal axes to allow the bicyclist to illuminate two different regions in the path of travel of the bicycle.

Abstract: A variable focusing flashlight includes a barrel for housing a battery therein. A tail cap is mounted on one end of the barrel and has a spring for urging the battery towards the other end of the barrel. A lamp base retains a lamp adjacent the other end of the barrel. A head assembly is mounted on the other end of the barrel and has a planar lens and a parabolic reflector with an open tail end to receive the lamp. The lamp base includes a stationary receptacle mounted to the barrel, a first conductor mounted in the stationary receptacle for connecting one terminal of the lamp to a positive terminal of the battery, a second conductor mounted in the stationary receptacle for connecting another terminal of the lamp to a negative terminal of the battery via the barrel, and a movable receptacle mounted movably on the stationary receptacle to make or break connection between the first conductor and the battery.

Abstract: A miniature flashlight as disclosed to comprise a barrel, a tail cap, a head assembly, and means for holding a miniature lamp bulb and for providing interruptible electrical coupling to dry cell batteries retained within the barrel. One-way valves may be positioned at seal locations in association with passageways to allow venting of overpressure within the interior volume of the flashlight.

Abstract: A device which can be set to start a light flashing unattended at a predetermined time. The device includes a light and a battery, together with a small electronic clock. The clock has a display for displaying a time, a memory for holding a settable alarm time, and alarm output terminals for outputting a signal at a pre-established time stored in the memory. An electronic control circuit receives the signal from the clock at the pre-established time, and causes the light to begin flashing at that time. In the embodiment shown here, the control circuit flashes the light for a predetermined time, and then turns the light off. In this embodiment the device includes a casing, and a switch mounted in the casing and electrically connected between the battery and the light. By this switch, the light can be turned on and off in a manner generally conventional for a flashlight.

Abstract: A flashlight which selectively provides an enhanced spot beam and fully illuminated broad beam. The modified parabolic reflector produces with either a point source of light or an extended filament source of light a spot beam which is substantially more uniform across its disc as is produced by a conventional parabolic reflector, and a greatly improved broad beam without unilluminated areas. Further, the range of distance in which these effects are provided is importantly increased.

Abstract: An ultraviolet curing device comprising a housing having a wave guide disposed within one end thereof. Disposed within the housing and reciprocally movable between focused and unfocused positions therewithin is a reflector member which is oriented relative the light source so as to be operable to reflect ultraviolet light from the light source to the wave guide. When the reflector member is in the focused position, ultraviolet light is reflected from the light source to the wave guide in a manner facilitating the passage of a desired frequency of the ultraviolet light through the wave guide. When the reflector member is in the unfocused position, ultraviolet light is reflected from the light source to the wave guide in a manner preventing the passage of the desired frequency of the ultraviolet light through the wave guide.

Abstract: A multi-function lighting device in the nature of a miniature flashlight and which can serve as a miniature lantern or lamp, as well as a miniature flashlight, and as a miniature signaling device. The lighting device includes a housing with a head for directing light axially outwardly in the nature of a collimated beam, so that the device can function as a flashlight. Connected to the head end is a transparent or translucent sleeve which is slidable with respect to the light source. Thus, when the head and the sleeve are shifted axially outwardly, the light source is located within the transparent or translucent sleeve. When the light source is energized, light will emanate primarily through the translucent or transparent sleeve and the amount of light emanating from the head end is substantially reduced. The device is also effective to operate as a signaling device in which the light is energized and de-energized in a sequencing or so-called "blinking" operation.

Abstract: A laser pointer is disclosed including a laser module fitted into a conductive cylindrical casing and attached with a laser firing lens assembly and connected to a battery set and controlled by a switch to fire a laser beam for pointing, the laser module including a focus adjusting element threaded into the inner thread on the cylindrical shell thereof, whereby rotating the focus adjusting element on the cylindrical shell in either direction causes change of distance between the lens of the laser firing lens assembly and the laser diode of the laser module so that the focus is adjusted. The switch has a switching control press rod for switch control, and for fastening to the pocket as the laser pointer is not in use.

Abstract: A flashlight having a body with a first externally threaded end engaged by a tubular head and a second internally threaded end engaged by a plug, whereby the focus of the flashlight may be adjusted by rotating the tubular head relative to the first end of the body and the flashlight may be turned off and on by rotating the plug relative to the second end of the body.

Abstract: A variable focusing flashlight includes a barrel which has a battery source of power contained therein and a tail cap mounted on one end of the barrel and having a compression spring provided thereon for urging the battery source towards the other end of the barrel. A lamp base retains a lamp bulb adjacent the other end of the barrel and includes a stationary receptacle mounted in the other end of the barrel and having an axially extending through bore formed therein. A pair of conductors are mounted in the stationary receptacle such that one of the conductors serves to couple the battery source and a first lamp electrode and the other one of the conductors serves to couple a second lamp electrode and the barrel. A movable receptacle has a plate portion disposed between the stationary receptacle and the battery source and formed with an opening and an upward extension that extends slidably into the through bore of the stationary receptacle.

Abstract: A miniature flashlight comprising a barrel, tail cap, head, bulb holder, bulb and an electrical circuit. The bulb holder is positioned at one end of the barrel such that the bulb extends into the head. The head includes a parabolic reflector surrounding the bulb such that the rotation of the head relative to the barrel changes the focus of the flashlight beam. A rotary switch associates the bulb holder with the barrel to control opening and closing of the electrical circuit. Rotation of the head away from the barrel closes the electrical circuit. The head is not a part of the electrical circuit and its removal exposes the bulb for substantially spherical illumination. The head assembly is removable from the barrel for use as a base into which the tail cap and barrel is inserted to stand the miniature flashlight in its "on" condition, as a lamp.

Abstract: A flashlight including a tube for receiving a battery, a control ferrule threadedly engaged on the upper end of the tube, a face cap and a reflector engaged on an upper end of the control ferrule, a sleeve and a socket engaged in the upper end of the tube for receiving a light bulb, a ring engaged in the sleeve and electrically connected to the upper end of the tube, the light bulb including an annular flange connected to the ring and being caused to move relative to the reflector when the control ferrule is rotated relative to the tube.

Abstract: A submersible electrical appliance includes a housing having a water-tight function chamber and at least one water-tight junction chamber, the housing having a bulkhead wall separating the function chamber from the junction chamber, and internal water-tight compression electrical fittings passing through the bulkhead and extending beween the function chamber and the junction chamber.

Abstract: A flashlight includes a barrel portion for enclosing and retaining batteries and comprising an end for accepting a movable bulb enclosure. The moveable bulb enclosure engages the end of the barrel so that the bulb enclosure is axially movable along the barrel portion. A bulb holder is provided at the second end for removably holding a bulb such that the bulb is relatively stationary during axial movement of the bulb enclosure. A stop is provided on the end of the barrel portion for preventing complete removal of the movable bulb enclosure from the barrel portion.

Abstract: A variable focusing flashlight includes a metal barrel and an insulating support fixed in the barrel by a metal pin. A first clamping member includes a first tubular portion fixed in an inner peripheral flange of the insulating support, and a first radial flange resting on the inner peripheral flange. A bulb has a radial conductive flange resting on the first radial flange and a bottom conductive bead connected to a cell in the barrel. A second clamping member includes a second tubular portion detachably sleeved over the first clamping member and a second radial flange clamping the radial conductive flange against the first radial flange. A compression spring is sleeved around the inner peripheral flange and electrically contacts the pin and the second clamping member. A second insulating tubular member is slidably sleeved around the second clamping member and rests on the compression spring.

Abstract: A miniature two or three cell flashlight as disclosed to comprise a barrel, a tailcap, a head assembly, and means for holding a miniature lamp bulb and for providing interruptible electrical coupling to dry cell batteries retained within the barrel and having a recharger for charging the chargeable batteries via conductors in the tailcap.

Abstract: A multipurpose flashlight comprising a casing which defines therein a battery chamber for holding a battery set and a storage chamber for holding medicines or small accessories, a back cover detachably attached to said casing at the back which has magnets for mounting on a metal surface and a socket for connecting to an external power supply, an alarm and light source set detachably attached to said casing at the front which comprises a buzzer, an electronic circuit and a lamp holder for producing audio and visual signal, and a projector detachably attached to said alarm and light source set at the front and moved to control the operation of said electronic circuit. Electric shock generating device may be attached to the casing for body defense.

Abstract: A hand held flashlight uses first and second light bulbs and first and second reflectors to generate a spot beam for illuminating distant objects and a flood beam for illuminating objects that are near. The first reflector is a parabolic reflector with the first light bulb being positioned at its focus to generate the spot beam. The second light bulb is positioned within the second reflector to produce the flood beam. A diffusing lens can be inserted in front of the second reflector to provide the appropriate divergence for the flood beam. The spot beam is preferably oriented at an angle relative to the axis of the flashlight for ease of use. The flashlight is designed so that the spot beam faces in a forward direction and the flood beam in a downward direction.

Abstract: A hand-held pulsed-light generator is presented for temporarily blinding and assailant at a distance. The light generator comprises a high energy storage capacitor, charged by high voltage power supply, and a high intensity flashtube. A high current electronic switch discharges the capacitor through the flashtube thereby generating an intense flash of light. The flash is focused by a reflector to form a concentrated beam pulse which is aimed at an assailant's head. The intensity of the pulsed-light beam striking the eyes is sufficiently strong to cause temporary blindness, thereby rendering the assailant immobile. By using a discharge capacitor with very high energy storage, and an ultra high intensity flashtube, and a focusing reflector for concentrating the light, it is possible to project a light flash that is several orders of magnitude brighter than the sun.

Abstract: A hand held search light includes a miniaturized electronic control circuit for igniting and operating an arc lamp in the light. Lamp mounting means is disclosed for shock mounting the arc lamp, including means to center and focus the light beam emitted by the search light. The search light is modularized for ease of field maintenance by unskilled personnel.

Abstract: A light-condensing reflector positioned at the opposite side or end of a light source from a primary paraboloidal reflector in opposed reflector-to-reflector relationship to amplify light. The light-condensing reflector is selectively smaller in diameter than the primary reflector such that an annular or ring-like light orifice is formed between the outside periphery of a base of the light-condensing reflector and the inside periphery of a base of the primary reflector. Light amplified and condensed by the two opposed reflectors is collimated in an annular light beam through the annular light orifice. When applied to flashlights, spotlights and vehicle headlights, this invention increases the light intensity substantially.

Abstract: A portable incandescent light assembly having a selectably interposable filter is disclosed. The light assembly is particularly applicable to night vision situations for airplane pilots. The light assembly comprises a housing in which a light source and a filter for filtering out infra-red light are located. The light assembly further comprises a mechanism for rotating the filter within the housing between a filtering position in which the filter is disposed across a light output axis and a non-filtering position in which the filter is disposed parallel to the light output axis.

Abstract: An easy turning on/off flash light and in particular to one by pressing the flashlight head downwardly, to turn the flashlight on/off and no needs to use finger to press switch. This particular flashlight comprises a bulbholder section, a restoring spring, a housing which mainly has a linking section and an engaging section and with the general parts, a lens, a flashlight head, a housing, a battery and a battery cover that this invention can perform its best performance which by pressing the flashlight head down, the linking section will bring the engaging section to spin to an angle where the engaging section will slide through a guide-rail and catched by a catch trough. Each time the flashlight head is pressed down, the engaging section will move to the next catch trough.

Abstract: An attachment for a flashlight for changing a narrow beam light output into a wide beam output. A hollow three dimensional reflector intercepts light rays coming from the flashlight, and redirects such rays into a series of fan-shaped patterns measured in radial planes containing the flashlight axis. A small central opening in the reflector transmits some rays in the forward (axial) direction. The attachment is useful during camping trips for illuminating the space within a tent enclosure.

Abstract: A compact battery-powered flashlight adapted for underwater use which includes a casing, an illumination unit, a sealant device, a connection device and a switch element. The casing is hollow and substantially oval in cross-section while having a closed rear end and a head receiving forward end. The head receiving forward end of the casing has a hollow outwardly protruding cylindrical neck. The casing further is adapted to receive at least two parallel adjacent rows of batteries with at least one battery per row. The casing neck is axially aligned with one of the rows of received batteries. The illumination unit is mounted upon the neck and generates light upon electrical connection to the batteries. The sealant device is disposed between the illumination unit and the neck for providing a watertight seal therebetween. The connection device is used to electrically connect the illumination device to the batteries received within the casing.

Abstract: This invention produces a spot beam or a broad beam having no unilluminated regions within the beam. In one case, the size of the beam is established by the relative position of the light bulb and a uniquely shaped reflector. The apparaent brightness of the beam is established by oscillating the beam in a controlled fashion. In another case, both the size of the beam and the apparent brightness are established by oscillating the beam in a controlled fashion. The result of this invention is a spot beam that can be made into a broad beam without the dark regions that result from the existing adjustment techniques and also a broad beam having an apparent brightness greater than that attainable by other techniques.

Abstract: A warning & lighting flash light has a cylindrical tube, a rear lid and a front cap which can adjustably be rotated around the tube to move back and forth in such a distance to make the light of the lamp to be reflected forward by the mirror provided at the front cap to function as a lighting flash light or to shoot through the light passing portion covered with a filter to function as a warning one.

Abstract: A flashlight includes a tube with a head provided at a front end. A light reflector is disposed in a front end of the head. A casing is force-fitted within the front end of the tube. A switch is fixed on the casing. An end cap, a spring and an end plate are disposed in an insulator which is received in a retainer. A light bulb is retained in the retainer. The switcher controls an electrical circuit of the flashlight. The light bulb is stable relative to the tube so that a rotation of the head relative to the tube makes the light reflector move relative to the light bulb.

Abstract: A miniature flashlight comprises a barrel, a tail cap, a head assembly, and means for holding a miniature lamp bulb. The means for holding lamp bulb comprises an insulated receptacle disposed external to the end of the barrel to which the head assembly is engaged, a second insulated receptacle disposed within the barrel and matingly engaging with the first insulated receptacle so as to enable the first and second insulated receptacles to translate axially through a distance limited by a flange formed on the first insulated receptacle and an annular lip formed inwardly at the end of the barrel, and a pair of conductor members mounted in the second insulated receptacle such that one of the conductors serves to couple the center electrode of a dry cell battery to a first pin of the lamp bulb and the other conductor member serves to electrically couple the second pin of the lamp bulb to the lip formed on the barrel.

Abstract: A torch comprises a battery housing and a torch head, which torch head is relatively movable to the battery housing, and wherein the torch head is provided with means supported on its inner surface which on relative movement of the torch head to the battery housing causes movement of a battery or batteries in the battery housing away from a light bulb fixedly supported at the end of the battery housing.

Abstract: A gradient index zoom illuminator which may be used for visible or infrared illumination comprises a housing which has a light exit opening in it. A point or collimated light source is mounted in the housing. A gradient index lens, having a central axis, also is mounted in the housing between the light source and the light exit opening in the housing; and the light source is located on the axis of the lens. Focusing of the light exiting from the light exit opening of the housing is accomplished by changing the relative distance between the light source and the gradient index lens to vary the beam of emitted light from a maximum divergence to to a narrow collimated beam.

Abstract: A flashlight that is convertible between a hand-held form and a body-mountable form is disclosed. The flashlight includes a head assembly, which houses the light bulb and the switching mechanism, and a body assembly which houses the power cells. The body assembly includes a pair of articulated arms which are hinged to the head assembly for forming a handle in the hand-held form or a yoke in the body-mountable form. An integral switching and focusing mechanism is provided in the head assembly. Axial displacement of the mechanism switches the flashlight on or off, whereas rotation of the mechanism moves a parabolic reflector relative to the light bulb so as to vary the focus of the light. The head assembly includes a lamp housing which is tiltable for directing the light beam. An electric circuit is provided to permit recharging of the flashlight power cells.

Abstract: A flashlight having a tail cap switch is disclosed. The tail cap is formed to fit in one end of the flashlight barrel for retaining one or more power cells therein. It is easily removable for replacement of the flashlight power cells. The tail cap has an integral switch for connecting and disconnecting the flashlight bulb to and from the power cells. A flexible boot is provided for enclosing an exposed portion of the switch when the tail cap is installed in the flashlight barrel. The flexible boot, which is formed of a resilient, water-resistant material, has a peripheral sealing portion which is formed to fit between the switch body and the barrel so as to form a watertight seal therebetween.

Abstract: A miniature flashlight as disclosed to comprise a barrel, a tail cap, a head assembly, and means for holding a miniature lamp bulb and for providing interruptible electrical coupling to dry cell batteries retained within the barrel.

Abstract: A hand-held, focusable beam flashlight has a barrel portion, a head unit, and a socket/switch assembly coupling the head unit to the barrel portion. The barrel portion has only one open end, thus eliminating the need for a tail cap. The socket/switch assembly is mounted on the open end of the barrel and retains one or more power cells therein. The switching mechanism is independent on the force necessary to maintain the power cell in electrical contact with the socket/switch assembly. The head unit is formed to controllably translate axially relative to the socket/switch assembly. The head unit includes means mechanically coupled to the switching mechanism whereby the electrical circuit to the flashlight bulb may be switched off and on as the head unit translates along the socket/switch assembly. The switching mechanism has essentially no slack, and therefore switching occurs with only a small axial movement of the head unit.

Abstract: A bulb and switch assembly for a flashlight including a bulb having first and second leads, a fixed switch body having first and second holes in one end, a first terminal in the first hole contacting the first lead, a conductor in the second hole contacting the second lead, and means for storing a spare bulb on the switch body.

Abstract: A compact battery-powered flashlight adapted for underwater use which includes a casing, an illumination unit, a sealant device and a connection device. The casing is hollow and substantially oval in cross section while having a closed rear end and a head receiving forward end. The head receiving forward end of the casing has a hollow outwardly protruding cylindrical neck. The casing further is adapted to receive at least two parallel adjacent rows of batteries with at least one battery per row. The casing neck is axially aligned with one of the rows of received batteries. The illumination unit is mounted upon the neck and generates light upon electrical connection to the batteries. The sealant device is disposed between the illumination unit and the neck for providing a watertight seal therebetween. The connection device is used to electrically connect the illumination device to the batteries received within the casing.

Abstract: A single cell flashlight which comprises a barrel, a tailcap, a head assembly, and a semi-permanently mounted reflector, lens and o-ring within the head assembly; which may be switched on and off by rotation of the head assembly with respect to the barrel; which may be focused upon further rotation of the head assembly with respect to the barrel; which may be used as a source of unfocused, substantially spherical illumination by removal of the head assembly from the barrel; which may be provided with a lanyard or a key ring holder positioned near the head end of the flashlight to provide for simultaneous illumination of a lock as well as its key with one-hand operation of the flashlight; and which is provided with a special tailcap insert for that a single-cell flashlight employing batteries of a "AAA", "AAAA" or special size batteries.

Abstract: A flashlight includes a barrel for retaining batteries. A reflector and lens located at one end is rotatable axially to vary the reflection dispersion of a light beam emanating through the lens from a lamp bulb. An internal cylindrical sleeve within the barrel provides the electrical path between a tail cap adjacent the one electrode end of the batteries and the end adjacent the reflector, lens, and bulb. The sleeve is a nonferrous nickel plated material for improved conductivity between component parts.

Abstract: An adjustable focus flashlight comprising three units: a head, a replaceable switch unit, and a battery unit. The replaceable switch unit includes a switch assembly having two holes in one end for bulb leads, and a holder near that end for storing a spare bulb. The replaceable switch unit also includes a cylindrical member around the switch assembly, which is externally threaded, at the end near the holes, to engage the internal threads of the head, and adjust the focus. A flexible sleeve fits around the outer surface of the cylindrical member, the sleeve having a circular protrusion formed in the end thereof, to frictionally engage part of the head, and maintain a selected focus adjustment.

Abstract: A flashlight having a switch and beam adjustment mechanism located in the tailcap whereby the flashlight may be turned on and focused with one hand without changing the grip on the flashlight by that hand. Batteries of "AAAA" size are contemplated for use in one embodiment of the flashlight.

Abstract: A sighting device for aiming an astronomical telescope. The sighting device comprises a tubular housing which is removably mountable in the eyepiece holder of the telescope. A light source is mounted within the tubular housing for projecting light into the eyepiece holder to thereby form a beam of light emergent from the front end of the telescope. This beam of light provides a visual indication of the direction in which the telescope is aimed, and the telescope may be aimed at a desired object or area by reference to the beam of light. After the telescope has been aimed, the sighting device is removed and replaced by a normal eyepiece.

Abstract: A miniature two or three cell flashlight as disclosed to comprise a barrel, a tailcap, a head assembly, and means for holding a miniature lamp bulb and for providing interruptible electrical coupling to dry cell batteries retained within the barrel and having a recharger for charging the chargeable batteries via conductors in the tailcap.

Abstract: A flashlight includes a focusing beam assembly which is diposed between an elongate casing holding the batteries and a lens cowl enclosing an open end of the casing. The focusing beam assembly includes a parabolic reflector slidably mounted within a base. A spring urges the reflector forward relative to the base so that a light bulb mounted in the base is normally at a first position relative to the reflector. By tightening the lens cowl on the casing, the reflector can be compressed against the spring relative to the base so that the position of the light bulb relative to the reflector is changed. In this way, the beam width emanating from the flashlight can be adjusted.

Abstract: A flashlight having a conductive barrel and a tailcap insert which provides for a conductive path through the tail assembly region of the flashlight to the batteries contained in the barrel.

Abstract: A spotlight with adjustable focusing that can be held in a fixed position. The reflector has a hub which screws on over the bulb holder which is supported by the light handle. The outer side of the hub has alternating ridges and valleys. A detent is attached to the handle and fits into any valley which might be selected to hold the light in a fixed focusing position. The light can be secured to adjustable rifle telescope studs.