Operating theatre table light

Details Operating theatre table light Operating theatre table light

1983-04-26

1986-05-27

Lechert, Jr., Stephen J.

Illumination

Work-table lighting system

362250, 362252, 362269, 362275, 362285, 362287, 362417, 362426, 362427, 362804, A61G 1300

Patent

active

045919534

ABSTRACT:
The light comprises a cluster of lamp units (100), pivotally mounted at (6,7), on respective chassis (8) running on a loop track. The lamp units are approximately equidistant from a central axis and illuminate a common patch on the axis. Each chassis (8) is connected to a respective chain (35) which may be driven to move individual chassis (8) along the track, changing the configuration of the cluster. A linkage (26,27,31) enables the lamp unit inclination to be varied and a linkage (12,13,14,16,18) enables the relative positions of a bulb (1) and a concave reflector (10) to vary, thereby varying the beam width. The rollers (18) of each unit roll on a surface of a first common hoop and the rollers (31) on a surface of a second common hoop. The hoops are movable enabling the inclination of beamwidth of all the lamp units to be varied simultaneously, changing the patch range or size.

REFERENCES:
patent: 3437803 (1969-04-01), Seitz et al.
patent: 3927313 (1975-12-01), Herold
patent: 4025777 (1977-05-01), Hayakawa
patent: 4196460 (1980-04-01), Schreckendgust
patent: 4316237 (1982-02-01), Yamada et al.
patent: 4384315 (1983-05-01), Hayakawa

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