Abstract: A miniature flashlight utilizes a standard type of bulb commonly used in standard size flashlights. In the preferred embodiment, the miniature flashlight includes a cylindrical casing containing a pair of batteries. A bulb disposed in the casing has a first terminal connected to the positive terminal of one of the batteries. The bulb has a cylindrical metallic base with an integral annular flange that forms a second terminal of the bulb. The casing carries a conductive flange for contacting the annular flange of the bulb in order to illuminate the bulb. The miniature flashlight of the preferred embodiment also includes a shuttle switch formed of nonconductive material which is operable for extinguishing the bulb by moving the bulb in a direction which moves its annular flange away from the conductive flange on the casing. The shuttle switch is generally ring shaped with a plurality of lugs for engaging the annular flange of the bulb.

Abstract: A mechanical method is described whereby the brake signal provided by the rear lights of an automotive vehicle is made unambiguous. In the case that the brake pedal of the said vehicle is not actuated, the invention causes all light from illuminated rear lamps of the vehicle to be transmitted from the rear of the vehicle as non-red colored light. In the case that the brake actuation means of the vehicle is actuated, the invention causes all light from illuminated rear lamps to be transmitted from the rear of the vehicle as red colored light. Thus, display of red colored light per se at the rear of the vehicle provides an absolute, immediately perceptible signal of braking.

Abstract: A head lamp for motor vehicle dimming and fog lights having a reflector reflecting beams of a light source to form a light beam directed along a path, a diaphragm with an edge arrangable in the path, an achromatic lens arrangable in the path to portray an image of the edge as a light-dark border of the light beam on a roadway and a correction element arrangable in the path to at least reduce a color fringe otherwise present on the light-dark border of the light beam from chromatic aberration.

Abstract: A knife is provided with a light in its handle portion, with the light being actuated by a compression or threaded movement of a cap attached to an end of the handle. In a separate embodiment, the light may be actuated by a threaded movement of the handle end itself, while a protective cap may be positioned over the handle end and its associated light lens.

Abstract: A safety flashlight (30) according to the invention includes a heavy duty magnet (1) secured to a cap (3) in turn connected to a main housing (9). A preferred flashlight (30) also includes a reflector cone (16) arranged to intercept a concentrated beam produced by a light bulb assembly (13) and radially reflect the light to make it noticeable irrespective of the angular orientation of the viewer with respect to the light (30). An electronic flashing circuit (10) is secured within the housing (9) using a synthetic rubber compound which insulates the circuit (10) and makes it less sensitive to shock.

Abstract: A portable lamp, especially for mounting on the head of the user, includes an adjustment collar designed to ensure displacement of the reflector causing a variation of the light beam focus, and operation of the bulb switch. The lamp comprises a single casing having an insulating body subdivided by an intermediate wall into a first rear compartment housing the power supply unit, and a second front compartment housing the bulb and the adjustable focusing device. The wall is provided with a communication orifice between the two adjacent compartments, and with a fixed sleeve to house the bulb. The switch is composed of an elastic contact blade cooperating with a flange of the reflector. Refer to FIG. 1.

Abstract: A miniature flashlight comprising a barrel, tail cap, head assembly, and bulb holder providing interruptible contact to batteries within the barrel. The bulb holder comprises an insulated receptacle external to the barrel end engaging the head assembly, a second insulated receptacle within the barrel engaging the first receptacle enabling both receptacles to translate axially, limited by a flange on the first receptacle and an annular lip formed inwardly at the barrel end, a pair of conductors mounted in the second receptacle couple one conductor with the center electrode of a battery with the first bulb pin and the other conductor with the second bulb pin to the barrel lip. A spring fits between the tail cap and the batteries. The circuit is closed by the barrel, tail cap, and spring coupling the second lamp pin to the battery case terminal.

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 non-ferrous nickel plated material for improved conductivity between component parts.

Abstract: An electric light has a casing with a depth that is less than half as great as its width. This is rendered possible by the use of a compact, precision reflector which permits a focused, parallel-directed beam despite the configuration of the casing.

Abstract: To efficiently utilize a halogen incandescent lamp in a flashlight, while oviding for essentially uniform illumination of respective spot and flood fields, the halogen incandescent lamp (11) is located within an elliptical reflector portion (12), with the filament of the lamp at one of the focal points of the ellipse. A part spherical reflector portion (13) is joined to the elliptical portion (12). At or close to the second focal point of the ellipse, a diaphragm (14) is located, which diaphragm is imaged by a condenser lens (16). The change between spot and flood illumination is obtained by varying the diaphragm opening, for example by a variable diaphragm size opening, or shifting the diaphragm towards and away from the first focal point.

Abstract: A miniature flashlight comprising a barrel, a tail cap, a head assembly, and a miniature bulb holder and providing interruptible contact to batteries within the barrel. The bulb holder comprises an insulated receptacle disposed external to the barrel end which the head assembly engages, a second insulated receptacle within the barrel engaging the first insulated receptacle enabling the first and second insulated receptacles to translate axially and limited by a flange on the first insulated receptacle and an annular lip formed inwardly at the barrel end, and a pair of conductors mounted in the second insulated receptacle such that one of the conductors couples the center electrode of a battery with the first bulb pin and the other conductor member couples the second bulb pin to the barrel lip. A spring fits between the tail cap and the batteries. The electrical circuit is closed by the barrel, the tail cap, and the spring to couple the second lamp pin to the battery case terminal.

Abstract: Lamp, including a head, a concave mirror reflector disposed in the head, a battery case, and a carrier for a light source being integral with the battery case forming a one-piece unit, the reflector and the carrier being movable to each other in axial direction, and a method for producing the lamp.

Abstract: A multi-section multi-purpose hand light incorporates a shade casing, a head cover, a refraction hood, red filter lens and a body comprised of a number of cylindrical sections. The red filter lens can be releasably fastened to the retractable refraction hood. The light being emitted thereby will be a focused red light beam surrounded by an aureole of white light. This hand light may serve as a striking signal for help where needed to facilitate search and rescue efforts by a tracing team. The intensity of illumination can be increased by an increased number of the cylindrical sections. Spare bulbs or replacement parts can be stored in the bottom section of the body. The hand light also serves as a regular hand light by removing the red filter lens from the hood and coupling it to the bottom section of the hand light.

Abstract: An improved flashlight is disclosed which includes an improved mechanism for selectively varying the light beam intensity and area of illumination, an improved switch means, an improved light bulb and light bulb holder, and an improved manner of retaining dry cell batteries within said flashlight. The mechanism includes a double cam notch in a reflector support and abutting cam follower rotates cooperatively attached to a bulb holder to enable movement of the bulb forwardly and rearwardly relative to the light reflector through rotation of the head of the flashlight. The light bulb is configured to have a double pin electrical connection which plugs into a double socket thereby enabling the bulb and holder to have a smaller diameter encapable of passing through a smaller hole formed within the reflector. The switch is of the rotary type which wipes the contacts clean on rotation to enhance electrical conductivity.

Abstract: This invention, in the preferred embodiment, relates to battery powered hand held lamps, commonly known as flashlights, or when in compact form as pen or pocket lights. More specifically, the invention relates to quasi-blackout applications and uses that require fast visual recovery in darkness and minimum personal exposure of the operator of the device.

Abstract: A book-light characterized by its small size and light weight is formed from suitable plastic material with a base supporting a vertical lamp-bearing arm and an integral clamp consisting of a U-shaped frame having side arms rigidly attached to the base and a central plate flexibly attached to the base so that the entire book-light may be attached to a book or other publication by inserting the cover or pages between arms and the central plate. The vertical lamp-bearing arm is mounted at one end in a transverse slot in the base, while the other end supports the lamp proper in a manner to permit both circular and vertical motions.

Abstract: An electric lamp with a parabolic reflector in a threaded collar, provided with a device for adjusting the focus by relative displacement between the bulb and the reflector which occurs when turning the collar on its threads between first and second adjusting positions. The device furthermore controls a switch housed within the casing for the device. The device is particularly applicable as an electric headlamp for mountain-climbers or spelunkers.

Abstract: A variable focus flashlight has a cylindrical flashlight body and a separate flashlight head which is threadedly secured to the body. A bulb is supported in fixed relation to the body, and a reflector is supported in fixed relation to the head. Rotation of the head changes its longitudinal position relative to the body, hence moving the reflector either forwardly or rearwardly relative to the bulb and thereby adjusting the focus of the flashlight beam.In order to retain the selected focus adjustment, an expansible spring is disposed partly inside the flashlight body and partly inside the flashlight head, the corresponding ends of the spring being seated in respective ones of those members. The expansive force of the spring biases the interengaging threads of the flashlight head and body, producing a substantial frictional force so as to retain the desired rotational position of the head.

Abstract: An improved portable electric flashlight capable of changing over state of light projections continuously between a forward projection and a diffused peripheral projection, which is simple in construction and stable in functioning, and is also applicable to a variety of end uses, for example, as a normal flashlight to be carried about with hands, a lantern to be placed on desks or floors or hung from ceilings, etc.

Abstract: A rugged, heavy duty flashlight which is hermetically sealed to prevent intrusion of moisture and dirt. A manually operable electric switch is provided having a rotary contact to complete the battery circuit to the bulb. When the switch is actuated the rotary contact is moved axially to engage stationary contacts and is then rotated to wipe against such stationary contacts to clean the contact surfaces. The flashlight is readily adjustable to change from a narrow concentrated light beam to a broad scattered beam.

Abstract: Headlights for vehicles, especially such which are to be subjected to rough treatment have a casing of resilient and yielding material. The casing is cup shaped and near its edge, at the open side of the cup, an annular groove is provided destined to hold a transparent lens like front wall.