US PATENT SUBCLASS 362 / 461
.~.~ Plumb or level having liquid-type bubble

Current as of: June, 1999
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362 /   HD   ILLUMINATION

459  DF  SUPPORTED BY VEHICLE STRUCTURE (E.G., ESPECIALLY ADAPTED FOR VEHICLE) {17}
460  DF  .~ Including headlamp beam measuring or indicating (e.g., headlamp beam leveling, aiming, inclination detecting) {2}
461.~.~ Plumb or level having liquid-type bubble {1}
462  DF  .~.~.~> Including indicia mark (e.g., calibrated rod)

DEFINITION

Classification: 362/461

Plumb or level having liquid-type bubble:

(under subclass 460) Subject matter including (1) a weight suspended from an end of a line and used to test vertical alignment of the headlamp beam or (2) a positioning device consisting of a body portion having an elongated chamber and having a viscous fluid entrapping a gas bubble which moves within the confines of the chamber and further including a viewing surface formed on the body portion providing a view of the position of the gas bubble through the viewing surface to provide a visual indication for proper aiming of the headlamp beam.

SEE OR SEARCH CLASS

33, Geometrical Instruments,

288, for an alignment device for positioning or determining the position of an automobile headlamp, subclasses 335+ for a device adapted for cooperation with the vehicle headlight for indicating a direction, subclasses 365+ for a level or plumb responsive to terrestrial gravitation and establishing either a horizontal or a vertical direction, and subclasses 613+ for a gauge to verify the alignment or proper mutual arrangement of the two parts.

356, Optics: Measuring and Testing,

121, for an optical axis adjusting system for a headlamp, and subclass 249 for a fiducial instrument having a liquid surface (e.g., bubble level). [figure] [caption]A - Leveling device; B - Headlamp assembly; C - Adjustment assemblies; D - Adjustment screws; E - Lamp surface; F - Housing; G - Fluid receiving chambers; H - Bubble; J - Clamps