Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1988-09-26
1990-02-06
Olszewski, Robert P.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51141, B24D 902
Patent
active
048979686
ABSTRACT:
An inflatable grinding roller is disclosed which comprises an elastic sleeve tightly fitted over a hollow cylindrical support of which the center is concave so that the sleeve and support together define an inflatable air chamber. The concave section further has a bore section having a radial shoulder at its center so that angular corners are formed, which house packing rings. The ends of the sleeves are inturned over the ends of the support and clamped in position by skirts of a pair of cup-like plugs of which the flat bottoms have axial glands pressing the packing rings against the radial shoulder of the angular corners. A mandrel snuggly fits in the glands, the packing rings and the radial shoulder. It is blocked at one end against the bottom of one of the plugs while the other plug is forced against the first plug by a clamping mechanism. The mandrel has a blind bore communicating with the air chamber by passages through the mandrel, the randial shoulder and the bore section of the concave section. The open end of the blind bore has an inflation air check-valve.
REFERENCES:
patent: 1444314 (1923-02-01), Herder
patent: 2017163 (1935-10-01), Reed
patent: 2505680 (1950-04-01), Mall
patent: 2601048 (1952-06-01), Monger
patent: 2671297 (1954-03-01), Arms
patent: 3178863 (1965-04-01), Mikiya
patent: 3496685 (1970-02-01), Schmidt et al.
Advertising Brochure (in German) entitled "Friweg", undated, Fritz Wegne GmbH & Co., Hamburg, Germany.
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