Self positioning lamp fixture

Details Self positioning lamp fixture Self positioning lamp fixture

1991-09-09

1992-07-28

Lazarus, Ira S.

Illumination

Supports

362401, 362410, 362418, 362429, F21V 2100

Patent

active

051345552

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. Thus, when the lamp fixture is tipped or tilted from its vertical position, it pivots around such lowered center of gravity on the rounded outer surface of the bottom wall and gravitational forces acting on the weight of the ballast much as a teeter-totter brings the tilted lamp fixture back to its upright or vertical position.

REFERENCES:
patent: 713364 (1902-11-01), Uhlenhart
patent: 1228615 (1917-06-01), Stafford
patent: 4028543 (1977-06-01), Oster
patent: 5001617 (1991-03-01), Chan

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