Abrasive medium with selected density
OwnerJoon Parkinventor
Life of this patent
Estimating the term…
Abstract
The hard coated abrasive medium is formed by providing a hollow body with abrasive deposit on the outer surface. The buoyancy is provided by the enclosed air space, and the weight is defined by the weight of the body plus the hard plating or the abrasive grit deposited thereon. The density is selected in accordance to the character of the workpiece with which it is to be used in order to optimize the abrading action by interacting with the workpiece in the optimum fashion. In one embodiment, the abrasive grit is bonded to the exterior surface of the abrasive medium in a spiral shape to accelerate the abrading action.
Claims20
An abrasive medium comprising:
- a body, said body being formed with an external surface, at least a portion of said external surface being of rough surface configuration so as to be abrasive, said body being formed of at least one convex cup and a cover to define a hollow interior sealed space;
- and
- a hard surface material layer on at least the rough surface configuration of said external surface of said body, said hard surface material layer being sufficiently thin so as to not significantly reduce the roughness of said rough surface configuration.
An abrasive medium comprising:
- a body, said body being formed of a first and a second cup, at least one of said cups having an external surface which is partially convex and partially concave, said first and second cups being attached to each other to define a hollow interior sealed space;
- at least one of said external surfaces being treated to be abrasive.
An abrasive medium comprising:
- a body, formed of at least one convex cup and cover to define a hollow interior sealed space;
- and
- abrasive grit bonded to the exterior surface of said body, said abrasive grit bonded to the exterior surface being bonded thereto in spiral configuration.
An abrasive medium comprising:
- a body, said body being formed of at least one convex cup and a cover, said convex cup and said cover each being formed of material having perforations to form perforate material, said cover being attached to said cup to form a hollow perforate body, synthetic polymer composition material engaging in and closing the openings in said perforate material to define a closed hollow interior sealed space, a portion of said perforate body extending out of said synthetic polymer material to form exposed surfaces, said exposed surfaces having hard abrasive surfaces.
Dependencies are inferred from the claim text.