# US 5,702,293 A · Holding fixture for metallographic mount polishing

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- Number: US 5,702,293 A
- Document ID: US5702293A
- Status: Granted
- Kind: A
- Application number: 08/740,513
- Filed: 1996-10-30
- Granted: 1997-12-30
- Earliest claimed: 1996-10-30
- Assignees: The United States of America as represented by the United States Department of Energy
- Inventors: Clyde H. Barth; Charles E. Cramer
- Web page: https://patentgrep.com/patent/US5702293A

## CPC

- B24B 37/30: for single side lapping of plane surfaces
- B24B 13/005: Blocking means, chucks or the like; Alignment devices
- G01N 1/32: Polishing; Etching
- B24B: MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING (grinding of gear teeth B23F, of screw-threads B23G1/36; by electro-erosion B23H; abrasive or related blasting B24C; tools for grinding, buffing or sharpening B24D; polishing compositions C09G1/00; abrasives C09K3/14; electrolytic etching or polishing C25F3/00; grinding arrangements for use on assembled railway tracks E01B31/17); DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)

## Abstract

A fixture for holding mounted specimens for polishing, having an arm; a body attached to one end of the arm, the body having at least one flange having an opening to accommodate a mounted specimen; and a means applying pressure against the outer surface of the mounted specimen to hold the specimen in contact with the polishing surface.

## Claims

### Claim 1

A fixture for holding a specimen for polishing comprising:
(a) an arm;
(b) a body attached to an end of said arm, said body having a first opening of sufficient dimensions to allow insertion of a specimen for polishing therein and to hold said specimen stable and in place, a second opening axially parallel to said first opening; and
(c) a pressure means applying pressure against said specimen to hold said specimen in contact with a polishing surface, said pressure means capable of being lockingly engaged within said second opening.

### Claim 2

A fixture for holding a specimen for polishing in conjunction with a polishing apparatus comprising:
(a) an arm;
(b) a body attached to an end of said arm, said body having at least two flanges, said first flange having an opening of sufficient dimensions to allow insertion of a specimen for polishing therein and to hold said specimen stable and in place, a second flange having an opening axially parallel to the opening in said first flange; and
(c) a pressure means insertable into the opening in said second flange, said pressure means applying pressure against said specimen to hold said specimen in contact with a polishing surface.

### Claim 3 (depends on 2)

A fixture according to claim 2, wherein at least one flange has a plurality of flattened edges around the outer circumference of said flange.

### Claim 4 (depends on 2)

A fixture according to claim 2, wherein the openings in the flanges are axially aligned.

### Claim 5 (depends on 2)

A fixture according to claim 2, constructed from a non-corrosive material.

### Claim 6 (depends on 2)

A fixture according to claim 2, wherein:
(a) said pressure means comprises a cylindrical body, said cylindrical body having one or more posts axially perpendicular thereto, and a fitting attached to one end of said cylindrical body for making connection to the polishing apparatus; and
(b) said second flange further comprises notches to accommodate said posts to prevent said cylindrical body from rotating.