Searchlight reversing mechanism

Details Searchlight reversing mechanism Searchlight reversing mechanism

1980-09-11

1982-08-10

Lechert, Jr., Stephen J.

Illumination

Light source and modifier

Laser type

362 35, 362210, 362272, 362285, 362286, 362287, 362384, F21V 2114

Patent

active

043441173

ABSTRACT:
A drive mechanism for revolving the turret of a searchlight assembly. The turret is rotated in an oscillating manner over an arc of less than 360.degree.. It is particularly characterized by smooth reversal allowing the driving of a high inertia turret without rapid motor overload and failure as characterized by other prior art methods of driving such mechanisms. A partial cylindrical track is concentrically disposed about the axis of rotation and attached to the turret. In the preferred embodiment, a link chain is welded along the bottom of the track, being folded back on the ends in a tear-drop shape. A drive sprocket on a swing arm is held into engagement with the chain and driven by a constant speed motor. The sprocket alternately drives along the inside of the chain and the outside of the chain smoothly traversing between the positions around the tear-drop ends to cause a smooth deceleration and acceleration.

REFERENCES:
patent: 2574621 (1951-11-01), Chun
patent: 2954771 (1960-10-01), Boyan
patent: 4298911 (1981-11-01), Headrick

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