Centering device for use with Brinell hardness-measuring probe

Details Centering device for use with Brinell hardness-measuring probe Centering device for use with Brinell hardness-measuring probe

1991-02-19

1992-09-29

Raevis, Robert

Measuring and testing

Hardness

By penetrator or indentor

G01N 348

Patent

active

051506084

ABSTRACT:
A centering device for Brinell hardness-measuring instruments includes an alignment member positioned at the opening of the instrument providing a field of view to the optics within the instrument. A central portion of the alignment member protrudes through the instrument opening and is hemispherically configured to mate with a circular Brinell penetrator indentation in the specimen surface. The central portion of the alignment member is open to freely pass light axially through the alignment member. The alignment member is preferably spring supported within the instrument to permit the alignment member to partially retract into the instrument and the working face of the instrument to be positioned against the specimen. A switch is provided responsive to movement of the alignment member to activate a light source in the instrument.

REFERENCES:
patent: D283599 (1986-04-01), Biddle, Jr. et al.
patent: D304427 (1989-11-01), Biddle
patent: 2305760 (1942-12-01), Bernhardt
patent: 3763697 (1973-10-01), Sturm
patent: 4945490 (1990-07-01), Biddle, Jr. et al.
NewAge Industries Testing Instrument Division Technical Bulletin, "A Major Development in Brinell Hardness Testing from Newage Industries The B.O.S.S.", 1 sheet (two-sided).
Newage Industries Inc. brochure, "Newage Brinell Scopes Improves Accuracy & Speed of Brinell Impression Measurement", 1 sheet (two-sided).

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