US PATENT SUBCLASS 508 / 100
SOLID ANTI-FRICTION DEVICE, ARTICLE OR MATERIAL THEREFOR (i.e., SHAPED SOLID ARTICLES WHICH RETAIN THEIR SHAPE DURING USE, SUCH AS BEARINGS, RINGS, SEALS, JOURNAL BOXES, BUSHINGS, BRAKES, CLUTCHES, GUN WADS, JOURNAL BEARINGS, OR LINERS FOR BEARINGS, BRAKES OR CLUTCHES, OR MATERIAL THEREFOR, WHEREIN A LUBRICANT IS A PERMANENT PART OF THE SOLID ANTI-FRICTION DEVICE, ARTICLE OR MATERIAL, WHETHER BY PERMANENT COATING, IMPREGNATION INTO THE INTERSTICES THEREOF, OR BY BEING PART OF THE COMPOSITION) (e.g., SYNTHETICRESIN TYPE SOLID ANTI-FRICTION DEVICES, ETC.)

Current as of: June, 1999
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508 /   HD   SOLID ANTI-FRICTION DEVICES, MATERIALS THEREFOR, LUBRICANT OR SEPARATE COMPOSITIONS FOR MOVING SOLID SURFACES, AND MISCELLANEOUS MINERAL OIL COMPOSITIONS

100SOLID ANTI-FRICTION DEVICE, ARTICLE OR MATERIAL THEREFOR (i.e., SHAPED SOLID ARTICLES WHICH RETAIN THEIR SHAPE DURING USE, SUCH AS BEARINGS, RINGS, SEALS, JOURNAL BOXES, BUSHINGS, BRAKES, CLUTCHES, GUN WADS, JOURNAL BEARINGS, OR LINERS FOR BEARINGS, BRAKES OR CLUTCHES, OR MATERIAL THEREFOR, WHEREIN A LUBRICANT IS A PERMANENT PART OF THE SOLID ANTI-FRICTION DEVICE, ARTICLE OR MATERIAL, WHETHER BY PERMANENT COATING, IMPREGNATION INTO THE INTERSTICES THEREOF, OR BY BEING PART OF THE COMPOSITION) (e.g., SYNTHETICRESIN TYPE SOLID ANTI-FRICTION DEVICES, ETC.) {6}
101  DF  .~> Animal or plant matter (e.g., blood, hair, skin, wood, hemp, cotton, paper, lard, castor oil, shellac, glue, beeswax, etc.) {1}
103  DF  .~> Elemental or alloyed metal {2}
106  DF  .~> Halogen compound
107  DF  .~> Silicon compound
108  DF  .~> Heavy metal or aluminum compound (e.g., MoS2,etc.)
109  DF  .~> Graphite, coal, or elemental carbon

DEFINITION

Classification: 508/100

SOLID ANTIFRICTION DEVICE, ARTICLE OR MATERIAL THEREFOR (i.e., SHAPED SOLID ARTICLES WHICH RETAIN THEIR SHAPE DURING USE, SUCH AS BEARINGS, RINGS, SEALS, JOURNAL BOXES, BUSHINGS, BRAKES, CLUTCHES, GUN WADS, JOURNAL BEARINGS, OR LINERS FOR BEARINGS, BRAKES OR CLUTCHES, OR MATERIAL THEREFOR, WHEREIN A LUBRICANT IS A PERMANENT PART OF THE SOLID ANTIFRICTION DEVICE, ARTICLE OR MATERIAL, WHETHER BY PERMANENT COATING, IMPREGNATION INTO THE INTERSTICES THEREOF, OR BY BEING PART OF THE COMPOSITION) (E.G., SYNTHETIC RESIN TYPE SOLID ANTIFRICTION DEVICES, ETC.):

(under the class definition) Antifriction devices, articles or materials therefor under the ... which, in the case of the articles or devices, are: (1) solid, (2) shaped, (3) shape-retaining during use and (4) characterized by having a lubricant substance as a permanent part of the device or article, which permanence may be accomplished by permanent

coating, impregnation into the interstices thereof, or by being part of the composition from which the article or device is fashioned; the materials therefor are the aggregate materials which differ from the articles or devices only in that they have not been shaped.

(1) Note. This subclass and its indents provide for a backing which is coated with a layer of lubricating substance, provided that not enough structure is recited to warrant classification elsewhere.

(2) Note. This subclass and its indents provide for a backing which is coated with plural layers only if (a) each layer is a lubricant layer, and (b) not enough structure is recited to warrant classification elsewhere.

(3) Note. This subclass and its indents provide for articles, devices or materials therefor wherein a composition containing metal powder is sintered, compacted or compressed, only if a lubricant substance is (1) layered or (2) impregnated on or into the composition after the composition is sintered, compacted or compressed.

SEE OR SEARCH CLASS

148, Metal Treatment,206, 238 for carburizing or nitriding metal substrates using externally supplied carbon or nitrogen, subclasses 240-287 for processes of reactive coating of a metal substrate, particularly subclass 246 wherein the reactive coating composition contains a lubricant, and subclasses 316-319 for carburized or nitrided metal stock. These subclassees have not been exhaustively screened for patents which meet the definition of this Class 508; a search of these subclasses, in particular subclasses 316-319, may thus be appropriate to ensure a complete search.