# US 5,344,302 A · Remote impression tool

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- Number: US 5,344,302 A
- Document ID: US5344302A
- Status: Granted
- Kind: A
- Application number: 08/115,618
- Filed: 1993-09-03
- Granted: 1994-09-06
- Earliest claimed: 1993-09-03
- Assignees: B&W Nuclear Service Company
- Inventors: Edward M. Beehler; William H. Wolf
- Web page: https://patentgrep.com/patent/US5344302A

## CPC

- G21C 17/00: Monitoring; Testing (measuring in general G01); {Maintaining}
- G01B 1/00: Measuring instruments characterised by the selection of material therefor
- Y02E 30/30: Nuclear fission reactors
- G21C: NUCLEAR REACTORS (fusion reactors, hybrid fission-fusion reactors G21B; nuclear explosives G21J)
- G01B: MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A tool for remotely obtaining an impression of a component surface. A support pole is used to position a mold plate having side walls against a component surface. One or more locating guides are provided with seals for sealing off bores in the component surface. A piston from a pneumatic cylinder attached to the support pole is used to force impression material into the space between the mold plate and component surface. An adhesive plate on the mold plate insures removal of the impression with the mold plate once the impression material has hardened. The surface condition of the component may be determined by inspection of the negative impression.

## Claims

### Claim 1

A remote impression tool, comprising:
a. a support pole;
b. a mold plate attached to said support pole, said mold plate having side walls that define an enclosure having one open end;
c. an adhesive plate received on said mold plate in the enclosure defined by the side walls on said mold plate;
d. a pneumatic cylinder attached to said support pole, said pneumatic cylinder having a piston extending therefrom and being movable between a first retracted position and a second extended position;
e. an impression material cartridge attached to said pneumatic cylinder and receiving the piston extending from said pneumatic cylinder; and
f. a delivery tube in fluid communication with said cartridge and the enclosure defined by the side walls on said mold plate.

### Claim 2 (depends on 1)

The tool of claim 1, further comprising a locating guide on said mold plate.

### Claim 3

A tool for remotely obtaining an impression of a component surface, comprising:
a. a support pole;
b. a mold plate attached to said support pole, said mold plate having side walls that define an enclosure having gone open end;
c. a locating guide on said mold plate, said locating guide including means for sealing said locating guide with the component from which an impression is being obtained;
d. a pneumatic cylinder attached to said support pole, said pneumatic cylinder having a piston extending therefrom and being movable between a first retracted position and a second extended position;
e. an impression material cartridge attached to said pneumatic cylinder and receiving the piston extending from said pneumatic cylinder; and
f. a delivery tube in fluid communication with said cartridge and the enclosure defined by the side walls on said mold plate.

### Claim 4 (depends on 3)

The tool of claim 3, further comprising an adhesive plate received on said mold plate in the enclosure defined by the side walls on said mold plate.