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US 5,392,633 AGranted
Measuring the strength of abrasive grains
AssigneeGeneral Electric Company
InventorWilliam G. Morris
Life of this patent
Estimating the term…
Abstract
An apparatus and method of speedily measuring the strength of individual abrasive grains such as diamonds in which the grains are crushed between two hard rollers and the compressive force exerted on the grain by the rollers at the moment of fracture is measured.
Claims7
Apparatus for measuring the strength of abrasive grains, said apparatus comprising:
- a first hard roller;
- a second hard roller;
- a drive means for counter-rotating said first and second hard rollers;
- a compressing means for a exerting compressive force between said first and second hard rollers;
- a measuring means for measuring the compressive force exerted between said first and second hard rollers,
- said compressing means comprising:
- a frame to which said first hard roller is rotatably fixed;
- a beam to which said second hard roller is rotatably fixed, said beam comprising a flexible portion and said beam being mounted on said frame.
5 more elements
Method of measuring the strength of abrasive grains, said method comprising:
- counter-rotating a first hard roller and a second hard roller;
- interposing an abrasive grain between said first and second hard rollers;
- compressing the grain by applying a compressive force by means of said first and second hard rollers until said abrasive grain fractures;
- measuring said compressive force;
- said first hard roller being rotatably mounted to a frame and said compressive force being applied by means of a beam comprising a flexible portion and mounted on said frame, said second hard roller being rotatably mounted to said beam.
2 more elements
Dependencies are inferred from the claim text.