Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1989-11-20
1990-08-28
Schmidt, Frederick R.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51206NF, 51209R, 51358, B24B 4100
Patent
active
049514237
ABSTRACT:
A finishing article comprising a backing member defining a central opening and having two opposed surfaces each carrying an abrasive material thereon; an intermediate member, having a central bore therethrough, being positioned in the opening and attached to the backing member, the central bore is capable of being at least partially threaded for supporting the finishing article to a support member. The partially threaded bore of the finishing article is detachably connectable to a threaded portion of a support member to provide rotational movement from the support member to the finishing article for finishing an object wherein the partially threaded portion of the central bore lies substantially in the plane of the backing member so that both abrasive surfaces of the finishing article can be used for abrasive sanding and, if desired, the abrasive surfaces of the article can carry different grades of abrasives.
REFERENCES:
patent: 2175073 (1939-10-01), Amstuz
patent: 2316161 (1943-04-01), Harvey
patent: 2690632 (1954-10-01), Sevic
patent: 3250045 (1966-05-01), Caserta
patent: 3844072 (1974-10-01), Haigh et al.
Johnson Courtland M.
Johnson Cynthia L. B.
Rachoba M.
Schmidt Frederick R.
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