One-piece abrasive blasting wheel
OwnerJames R. Goffinventor
Life of this patent
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Abstract
A blast wheel for a rotatable centrifugal abrasive blasting device comprises a wheel having a front surface and a rear surface. A plurality of radially extending abrasive throwing blades are substantially equally spaced around the circumference of the front surface of the wheel. A vaned impeller is also on the front surface of the wheel. A ring is rigidly secured to the rear surface of the wheel. The blast wheel is a one-piece casting formed of dissimilar materials, such that the wheel, blades and impeller are formed of an abrasion-resistant material having relatively poor machinability. The ring is formed of a material having good machinability. The blast wheel is useful for projecting an abrasive, such as metal shot, against a surface to be treated.
Claims8
A blast wheel for rotatable, centrifugal abrasive blasting device comprising
- a wheel having a front surface and a rear surface;
- a plurality of radially extending abrasive throwing blades on the front surface of said wheel, wherein said blades are substantially equally spaced around the circumference of said wheel;
- a vaned impeller on the front surface of said wheel;
- and
- a ring rigidly secured to the rear surface of said wheel;
- wherein said device is a one-piece casting formed of dissimilar materials, such that said wheel, said blades and said impeller are formed of an abrasion-resistant material having relatively poor machinability, and said ring is formed of a material having good machinability.
A blast wheel for a rotatable, centrifugal abrasive blasting device comprising
- a wheel having a front surface and a rear surface;
- a plurality of radially extending abrasive throwing blades on the front surface of said wheel, wherein said blades are substantially equally spaced around the circumference of said wheel;
- a vaned impeller on the front surface of said wheel;
- and
- a ring rigidly secured to the rear surface of said wheel;
- wherein said device is a one-piece casting formed of dissimilar materials, such that said wheel, said blades and said impeller are formed of an abrasion-resistant ferrous metal or metal alloy having a Rockwell Hardness Number of about C 45 to about C 70 and having relatively poor machinability, and said ring is formed of a ferrous metal or metal alloy having a Brinell Hardness Number of about 180 to about 235 and having good machinability.
Dependencies are inferred from the claim text.