(under subclass 104) Implement for disintegrating and removing indicia from a surface by rubbing contact therewith, which implement comprises an erasive body composed of particles which are so in cohesive as to result in the
disintegration of the surface-contacting portion of the body, along with the indicia, by the force of the rubbing contact, before such force can cause substantial mutilation of the surface.
(1) Note. A patent to an eraser comprising an abradant body (i.e., a body including crystalline particles with sharp edges which mutilate a work surface) will be placed in an appropriate subclass, Class 451, Abrading. Absent disclosure of the presence of crystalline particles in the erasive body, the patent to the eraser will be placed in this, the generic locus for erasers, even though the description may characterize the implement or the process as `abrading'. A patent claim will be deemed generic, for placement in this class, when the claims are to erasing and not, specifically, abrading, even though the disclosure comprehends, or is limited to, an erasive body including crystalline particles. See the "Search Class" notes, below, for placement of still other types of mutilating erasing instrumentalities.
(2) Note. The term "eraser" is employed herein to refer to the implement; that is, to the piece of erasive material and all the structure associated therewith for performance of an erasure; or to such a piece, per se, when that is all that is used for such performance. The term "erasive body" is employed to designate the subcombinational aspect of such a piece in relation to other structure associable therewith for the performance of the erasing function.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3.53, for a motor-driven eraser.
105.51+, for an implement including generally independently useable tools, one of which is an eraser of this subclass. SEE OR SEARCH CLASS
30, Cutlery,
164.9, for a scratching tool (e.g., one having parallel glass fibers with exposed scratching ends) and subclasses 169+ for scraping tools used for erasing.
451, Abrading,
490+, and 526+ for a flexible abrading tool comprising a body whose structure includes claimed crystalline particles having sharp edges, which tool is disclosed as being used for erasing.
510, Cleaning Compositions for Solid Surfaces, Auxiliary Compositions Therefor, or Processes of Preparing the Compositions, appropriate subclasses for a chemical composition used for cleaning or removing foreign matter from a solid surface, particularly
