US PATENT SUBCLASS 356 / 237.1
INSPECTION OF FLAWS OR IMPURITIES

Current as of: June, 1999
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356 /   HD   OPTICS: MEASURING AND TESTING

237.1INSPECTION OF FLAWS OR IMPURITIES {6}
238.1  DF  .~> Textile inspection {2}
239.1  DF  .~> Transparent or translucent material {4}
240.1  DF  .~> Containers or enclosures (e.g., packages, cans, etc.)
241.1  DF  .~> Bore inspection (e.g., borescopes, intrascope, etc.) {5}
237.2  DF  .~> Surface condition {2}
237.6  DF  .~> Having predetermined light transmission regions (e.g., holes, aperture, multiple material articles)

DEFINITION

Classification: 356/237.1

INSPECTION OF FLAWS OR IMPURITIES:

(under the class definition) Subject matter wherein the presence of an imperfection, or foreign substance is determined using light reflected from or passing through a viewed specimen.

(1) Note. Art residing in this subclass may include nominally claimed conveyors to support and transport the specimen being inspected. For details to a conveyor, see SEARCH CLASS below.

(2) Note. This subclass provides for the inspection of flaws, imperfections, and impurities having a human perceivable output. See SEARCH CLASS below.

(3) Note. This subclass provides for the inspection of flaws, imperfections, and impurities. See SEARCH CLASS below.

SEE OR SEARCH THIS CLASS, SUBCLASS:

426+, for flaw or imperfection inspection with agitation or rotation of the inspected material.

432+, for determining the light transmission properties of materials.

445+, for determining the specular and diffuse light reflecting properties of materials. SEE OR SEARCH CLASS

198, Conveyors: Power-Driven, for power conveyors, per se, used in the transportation of material or articles past and beyond an optical test point of the visual or photosensitive type.

209, Classifying, Separating, and Assorting Solids,

702+, which for the visual inspection of material or articles with structure to facilitate a physical separation of the

articles or materials based upon physical differences of appearance.

250, Radiant Energy, particularly

200+, provide for photocells and associated circuitry with optical structure which may include measuring and testing and subclasses 559.01+ for a photocell responsive to light from a material having a cross-sectional dimension which is small compared to length, and through additional structure (i.e., a circuit) produces an electrical or mechanical output indicative of some characteristic of the material. See also (2) Note above.

324, Electricity: Measuring and Testing,

216+, for flaw testing involving magnetization, as with magnetized iron filings where the arrangement of the filings is viewed optically.

353, Optics: Image Projectors, for appropriate subclass for the projection of an image for viewing.

359, Optics: Systems (Including Communication) and Elements, for subject matter for the general viewing of an object.

385+, for microscopes with viewed object illumination, and 798+ for lenses with viewed object or viewed field illumination. See (3) Note above. 362, Illumination,

138+, for inspection lamps.

414, Material or Article Handling,

134+, for manually controlled selective delivery systems which involve visual inspection of articles or sheet type material.