Abstract: An automotive-type projection headlamp having a substantially elliptical reflector, a light source (bulb) located at the first focal point of the reflector, a projection lens disposed in front of the reflector, and a shade located at a position near the second focal point of the reflector for partially intercepting light passing from the reflector toward the projection lens. The shade is rotatable about a horizontal support shaft, and has a circumferential surface spirally shaped as seen in a longitudinal sectional view, so that the distance from the center of rotation of the shade to a point on the circumference thereof gradually varies. The vertex of the shade is vertically varied by turning the shade about the horizontal support shaft, thereby controlling the distribution of the output light beam.

Abstract: An adjustable desk lamp includes a pair of pivot arms mounted on a stepped base, and a movable support mounted on and along the pivot arms to a rest position in which the support rests on a selected step of the base to support a lamp head and a bulb contained therein at a selected elevation and orientation.

Abstract: A lamp frame assembly comprising a base having a sleeve for connecting a supporting frame through a coupling device, and a lamp holder connected to said supporting frame by a connecting frame assembly which is connected between said lamp holder and said supporting frame by two locking devices through which the angular position of the connecting frame assembly relative to the lamp holder and the supporting frame can be adjusted by a hand lever. By changing the sleeve on the base, the lamp frame assembly can be set up into a desk lamp or floor lamp. The base can be a wall fixture which incorporates the supporting frame, the connecting frame assembly and the lamp holder into a wall lamp.

Abstract: A self positioning lamp fixture comprises an elongated stand having a lamp component on its upper end and a self-righting or self-positioning structure at its lower end. The self-righting or self-positioning structure comprises a hemi-spherical bottom wall with a rounded outer surface for contact with the horizontal surface on which the lamp fixture is placed, and a volume of weighted material or ballast uniformly dispersed in the hemi-spherical cavity bounded by the hemi-spherical bottom wall below the horizontal equatorial plane through the upper edge of the hemi-spherical bottom wall, such ballast having sufficient weight relative to the weight of the rest of the lamp fixture which is above to lower the center of gravity below the horizontal equatorial plane.

Abstract: This invention relates to a retractable device for a desk lamp and in particular to one which including a tubular cylindrical casing having an end for connecting with an appropriate position of the desk lamp, a piston rod provided with an outer end for connecting with an appropriate position of the desk lamp and extending into the cylindrical casing, an annular ring fixedly mounted within the cylindrical casing for receiving a first rubber ring, a cap engaged with the other end of the tubular cylindrical casing, a plug mounted at the other end of the tubular cylindrical casing, and a second rubber ring disposed between the cap and the plug.

Abstract: A spotlight is described which has a bar-like carrier part which is subdivided via a separating plane into a fixed base part and a pivotal part which is hinged to this base part via a pivotal hinge and which simultaneously forms the carrier for the respective lighting means. The pivotal hinge is arranged eccentrically with respect to the bar axis and a weight compensation is in particular provided between the pivotal part and the lighting means so that a pivotal movement can be effected with a small positioning force.

Abstract: An illumination apparatus adjusting structure, comprising an adjustable lamp support mounted on a stand for holding a lamp holder. The adjustable lamp support comprises an invertedly disposed U-shaped balance rack mounted on a stand for holding an adjusting ring, a lamp supporting rod and a steering rod. The lamp supporting rod and the steering rod have each an end respectively connected to the lamp holder through a steering shaft. The opposite end of the steering rod is connected to the U-shaped balance rack at a lower end. The opposite end of the lamp supporting rod is inserted through the adjusting ring and coupled with a hand-hold.

Abstract: An apparatus wherein an elongate, vertically aligned mast includes an elongate slot directed through a forward wall of the mast, with a light boom reciprocatably mounted through the mast, with the light boom mounted to an endless cogged belt. The belt in operative association with a series of toothed pulley members, with a lowermost pulley member including a crank handle in operative association therethrough for permitting rotation of the belt organization. An access plate is mounted through a rear wall of the mast to permit selective securement of various light booms and associated lights to the belt, with a lowermost access plate permitting replacement of various counter-balance weights in association with the illumination members.

Abstract: A leveling device for leveling the orientation of a suspended light bar, beam, or cross-arm to which is mounted one or more light fixtures includes a bracket secured to the light bar and having an outwardly extending end. An adjustment cable is attached at opposite ends to the light bar and the outwardly extended end of the bracket, and passes through a pulley which is attached to the end of a suspension cable, which suspends the light bar and light fixtures from an elevated structure. An actuator member is attached between the pulley and the extended end of the bracket.

Abstract: A self-balanced multiposition holder (10), particularly for a lamp (16) comprises a circular sector-like base (12) and an arm (14) attached to the base. At its end opposite to the lamp, the arm is attached to a counterweight (20), which in assembled state of the unit is hidden inside the base. The center of gravity of the entire unit is located at the center of the circle of the above-mentioned sector which forms the base, and the weight of the base, together with the counterweight is balanced by the weight of the arm with the lamp shade and lamp. Thus, when the holder is inclined at any position by rolling it on the circular bottom surface of the base, it remains at equilibrium in any position within its range of rotation.

Abstract: A desk lamp, which includes a lamp shade structure comprised of a lamp shade, a sleeve set in the lamp shade, an adjusting rod having a thread portion on its upper end, and a lamp socket; a lamp bracket being to secure the lamp shade structure to a lamp stand and comprised of two parallel rods and upper, intermediate and lower union swivels; and a pendulum having stepped holes therethrough for the setting therein of screw rod, insulator ring and tubes, and lock nuts. Through the control of the sleeve, the lamp shade is allowed to rotate on the lamp bracket. Through the arrangement of the union swivels, the two parallel rods of the lamp bracket form to separate conductive circuits for conducting electricity. Through the lower union swivel, the lamp bracket is permitted to rotate on the lamp stand.

Abstract: A tanning bed with a closure control mechanism includes a lower stationery tanning element and an upper moveable tanning element, both mounted between a pair of side arm braces. The side arm braces each have two channels formed therein for slidably receiving a first pair and a second pair of rollers mounted from the upper tanning element. As a result of the orientation of the channels and rollers, the upper tanning element rotates and translates between an opened and a closed position without the need for a counterbalance or motor assist.

Abstract: A collapsible fluorescent tube fixture comprises a frame having a pair of spaced apart tube end supports each carrying a row of sockets, each socket being for receiving electrodes of one end of a fluorescent tube, and a scissors assembly connected between the supports for permitting the supports to move together into a storage position and to accommodate various length tubes and apart into a use position. Fluorescent tubes can be engaged between the sockets of the two supports with the supports in their use position. A boom has one end connected to the scissors assembly and an opposite end which carries an electrical ballast. The ballast is electrically connected to the sockets and may serve not only to electrically ballast the fluorescent tube but also to mechanically balance the weight of the frame. A pivot clamp connected intermediate the ends of the boom can be used to mount the boom on a tripod or other support structure.

Abstract: A laser-applied treatment apparatus includes a TEA type laser unit and a flexible link, such as a multi-joint arm assembly, for leading a laser beam emitted from the laser unit to a desired location, such as a part of a person's skin which is affected by dermatophytosis, in any desired orientation. Also provided is a pair of convex and concave lenses in the optical path of the apparatus for narrowing and collimating the laser beam such that it has an energy density suitable for use in treatment, e.g., athlete's foot. In one embodiment, a hand switch is mounted on a hand piece portion of the flexible link, and it controls the operation of the laser unit. Also provided is a foot switch which is operatively associated with the hand switch such that the operation of the first switch is rendered valid as long as the foot switch is kept depressed. Such a double switch structure provides an advantageous safety feature.

Abstract: An equipoised lamp is provided which comprises a lamp head mounted on an adjustable arm assembly which is counter-balanced by internal coaxial torsion springs mounted within the adjacent end sections of the arms. The end sections are bent at 90.degree., so that the arms may be set to desired angular positions about respective mutually perpendicular axes. The arms may be mounted on an upright base so that the assembly constitutes a floor lamp, or they can be clamped to a table, to provide a draftsman's lamp assembly, and the like. The lamp head itself is mounted at an intermediate position on one of the arms, so that the end of that arm may form a handle for manually adjusting the lamp head to any desired position without any need to touch the hot lamp.

Abstract: A sun tanning canopy is carried on an arm extending from a sleeve slidably engaging a vertical support column for heightwise movement up and down the said column, the sleeve and canopy being supported by a counterbalancing device consisting a coiled constant tension spring the upper free end of which is secured to the top of the column and the lower coiled end supported by abutment means secured to the said sleeve, whereby the heightwise position of the sleeve in the column can be varied by the application of slight upward or downward pressure on the sleeve or canopy.

Abstract: An upper part of a column can be pivotally lowered and raised relative to a lower part thereof for servicing of an appliance mounted thereon. However, before the column part can be lowered it must be raised through a limited vertical displacement relative to the column part. A releasable locking device is provided to hold the column part at the upper end of this displacement, and comprises configurated slots which receive a rotatable pivot shaft. Each slot has relatively wide portions and a relatively narrow portion and the shaft is so shaped that it can pass into the narrow portion (and thereby permit said limited vertical displacement of the column part) only when it occupies a predetermined angular orientation.

Abstract: A lamp (5) is secured to the end (4) of a support arm for at least horizontal translational movement, and is pivotable about a vertical axis (10) for azimuth adjustment of the light beams (from lenses 82, 83). To facilitate such horizontal movement by means of a handle (15), the handle is disposed on or adjacent the vertical pivot axis (10). The lamp, which may also be pivotable by means of the handle (15) about a horizontal axis 11, is preferably located substantially entirely on one side of the vertical axis (11).

Abstract: A lighting assembly especially adapted for promoting growth of plants in a greenhouse environment and the like, having a reflector cone with a light reflecting surface at a single cone angle of from about 76.degree. to about 64.degree. and preferably at an angle of about 68.degree. with respect to the center axis of the cone, and having a high powered halide or like light in part extending substantially below the plane of the outer edge of the reflector cone when the assembly is supported in a depending manner.

Abstract: An articulated task lamp for exemplary use as a counterbalanced drafting table lamp including pivotally interconnected base assembly, lower support arm, upper support arm, and lamp head, and counterbalance linkage operable within said lower support arm and base assembly and provided a novel connection to the upper support arm. The counterbalance linkage includes a torsion counterbalance spring in the base assembly having a force transmitting connection to a link member which is pivotally interconnected to a compensating link pivotally mounted intermediate its ends to the base assembly, the other end of said compensating link being pivotally connected to an elongated link member carried and operable within the lower support arm and having its other end pivotally connected to a crank member enclosed within a mid joint means providing a pivotal connection and force transmitting connection between the upper and lower support arms.

Abstract: An adjustable photographic light stand includes a base supported on rolling casters, and a column extending upwardly therefrom. An extendable boom arm is joined to the column by an adjustable carriage assembly which maintains the boom at any elevation along the column. A handle stored within the boom arm is extendable to raise or lower the carriage assembly and the boom arm. An L-shaped gimbal arm member is rotatably joined to the distal end of the extendable boom. A yoke member is rotatably joined to the distal end of the gimbal arm member, and is adapted to support a lamp head, X-ray unit, or the like. The yoke member provides rotational adjustment of the lamp head about two orthogonal axes, while the gimbal arm member provides for revolving adjustment about a third axis. The extendable boom arm provides lateral positioning of the lamp head, and the adjustable carriage assembly enables height adjustment of the unit.

Abstract: A height-adjustable support arm with a parallelogram linkage has a stationary first articulated head and a second articulated head which is movable relative thereto, the second articulated head having a support bar connected thereto for mounting a device such as a hanging lamp. In order to avoid gaps in the exterior portion of the second articulated head, the movable parts thereof are surrounded by a flexible covering mounted on a tubular parallelogram leg at one end and at the free end of the support bar at its other end. The exterior dimensions of the covering correspond substantially to the tubular parallelogram leg and the interior dimensions are selected such that the second articulated head can move freely therein within an adjustment range.

Abstract: The luminaire raising and lowering system includes a mast head in which a plurality of sets of pulleys are located. A carrier ring containing a number of lighting fixtures is suspended from the top head mast by a plurality of cables associated with respective ones of said sets of pulleys. Those cables are connected to a main winch cable through intermediate linkage means which compensate for differences in the length of said plurality of cables and enable the carrier effectively to "float". Means are also provided to monitor the tension on the main winch cable thereby preventing accidents due to undue slackness of the main winch cable or mispositioning of the same on the winch reel. Four cable and three cable systems are disclosed. Novel latching means are provided to take the load off of the suspension cables when the carrier is at the top of the pole in normal use.

Abstract: A frustoconical reflector and socket assembly for halide and like lights especially adapted for promoting growth of plants in a greenhouse environment and the like, the light reflecting surface of the reflector cone being at an angle from about 76.degree. to about 64.degree. and preferably about 68.degree. with respect to the center axis of the cone, and preferably being adjustable as by means of selective interconnection of holes along one radial edge of the cone and selected holes along the other radial edge thereof, and with adjustable counterweight means being provided generally opposite the radially cut edges of the cone to counterbalance the weight of the overlapping segment of the cone for any given selected cone angle.

Abstract: An arrangement in working lamps intended for close-range illumination of working areas, such as desks, working benches and the like. This type of lamps generally comprise an upper pivotable arm which supports the light fittings, a lower pivotable arm which is attached to the working area, and various kinds of spring means to take moments of leverage.The purpose of the invention is to simplify such prior-art structures while at the same time retain a maximum of possible positions of the lamp.In accordance with the invention, this purpose is achieved by the provision of a rail extending from a segment positioned between the upper and the lower pivotable arm essentially in parallel with the lower arm, to a guide means in a housing in which the lower end of the lower arm is pivotally mounted.

Abstract: A frame attached to a ceiling supports a horizontally reciprocal carriage. A light fixture is supported by the carriage. A flexible conductor has one end connected to the fixture and an intermediate portion extending around a part of said carriage so that movement of the carriage in one direction lowers the fixture and movement in an opposite direction elevates the fixture.

Abstract: The limited motion rotational joint employs two rotational members positioned as to be in frictional and rotatable engagement with each other around a common axis and in parallel spaced planes. The outer sections of the members are spaced apart, by the use of spacers, and a frictional foam is wrapped around the spacers while fitting between the outer sections. A compression unit is then used for circumferential application around the frictional foam to provide regulation of the frictional force applied to the rotational members.

Abstract: The luminaire raising and lowering system includes a mast head in which a plurality of sets of pulleys are located. A carrier ring containing a number of lighting fixtures is suspended from the top head mast by a plurality of cables associated with respective ones of said sets of pulleys. Those cables are connected to a main winch cable through intermediate linkage means which compensate for differences in the length of said plurality of cables and enable the carrier effectively to "float". Means are also provided to monitor the tension on the main winch cable thereby preventing accidents due to undue slackness of the main winch cable or mispositioning of the same on the winch reel. Four cable and three cable systems are disclosed. Novel latching means are provided to take the load off of the suspension cables when the carrier is at the top of the pole in normal use.

Abstract: An articulated arm supporting structure for a lamp is disclosed, in which the combination of three arms with a couple of friction discs and a pull spring is such as to permit the entire arm assembly to be desirably positioned while balancing the entire structure by means of resilient and frictional forces.

Abstract: A remotely controlled rotational lighting system for illuminating any chosen area of a room. A first motor is mounted on the ceiling at the approximate center of the area to be illuminated. A main support arm extends from the shaft of the motor and lies in a substantially horizontal plane. A second motor is suspended at one extremity of the main support arm and mates with a fixture support arm. A cluster of lighting elements is mounted at one extremity of the fixture support arm, while a set of counterweights is mounted at the other extremity. The end of the main support arm remote from the fixture support arm is provided with a set of counterweights so that the main support arm is in substantially perfect balance at its point of association with the ceiling-mounted motor.