Illumination – Light source and modifier – Tiltable or rotatable as a unit
Patent
1986-03-27
1987-11-10
Nelli, Raymond A.
Illumination
Light source and modifier
Tiltable or rotatable as a unit
362413, 242 848, 174117FF, F21V 2126
Patent
active
047061723
ABSTRACT:
An orientable lamp adjustable both in elevation and angle to properly illuminate an area of interest. The lamp includes a low-voltage, high-intensity light bulb housing attached to the end of an extensible arm cantilevered from a base. The arm is constituted by a pair of superposed electrically-insulated metal tapes that are arched to resist flexure and are interconnected to the bulb terminals to function as a two-wire line. The tapes are windable on a spring-biased reel rotatable within a cylindrical casing mounted on the base and having a projecting nose from which the tapes emerge. The angle of the casing relative to the base is adjustable, whereby the angle of the cantilevered arm may be varied to adjust the angle assumed by the fixture. Also supported on the base is a step-down transformer connected by sliding contacts to the tapes on the rotatable reel to supply low-voltage power to the two-wire line to energize the bulb. By extending or retracting the tapes to lengthen or shorten the arm, one can thereby adjust the elevation of the housing.
REFERENCES:
patent: 2543926 (1951-03-01), Mounique
patent: 2778017 (1957-01-01), Dorcsjak
patent: 3319061 (1967-05-01), Pohl et al.
patent: 3612744 (1971-10-01), Thomas
patent: 3757029 (1973-09-01), Marshall
patent: 4429462 (1984-02-01), Rutty et al.
patent: 4479617 (1984-10-01), Edwards
patent: 4502226 (1985-03-01), Hung
Ebert Michael
Nelli Raymond A.
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