# US 8,464,813 B2 · Cutter assembly for a raise boring reamer

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- Number: US 8,464,813 B2
- Document ID: US8464813B2
- Status: Granted
- Kind: B2
- Application number: 12/694,609
- Filed: 2010-01-27
- Published: 2010-05-27
- Granted: 2013-06-18
- Earliest claimed: 2006-06-20
- Assignees: Atlas Copco Secoroc LLC
- Applicants: Andrew J. Osborne, Jr.
- Inventors: Andrew J. Osborne, Jr.
- Web page: https://patentgrep.com/patent/US8464813B2

## CPC

- E21B 10/25: characterised by sealing details
- E21B 7/28: Enlarging drilled holes, e.g. by counterboring
- E21B 10/10: with roller axle supported at both ends
- E21D 9/104: {Cutting tool fixtures (devices with percussive tools E21D9/106)}
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21D: SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS (soil-conditioning or soil-stabilising materials C09K17/00; drilling or cutting machines for mining or quarrying E21C; safety devices, transport, rescue, ventilation or drainage E21F)

## Abstract

A raise boring reamer assembly includes a saddle, and a journal assembly carried by the saddle. The journal assembly includes nose and gage shanks, and a cutter is carried by the journal assembly. Nose and gage wiper rings are positioned proximate to the nose and gage shanks, respectively. The nose and gage wiper rings move debris in opposed directions in response to the rotation of the cutter.

## Claims

### Claim 1

A raise boring cutter, comprising:
a journal assembly having nose and gage shanks;
a cutter carried by the journal assembly;
a nose wiper ring carried by the journal assembly, the nose wiper ring being positioned proximate to the nose shank, wherein the nose wiper ring moves debris towards the nose shank in response to the rotation of the cutter, wherein the nose wiper ring includes a plurality of nose wipers on an outer nose wiper ring surface which extend at a non-zero angle relative to an axis of rotation of the cutter; and
a gage wiper ring carried by the journal assembly, the gage wiper ring being positioned proximate to the gage shank, wherein the gage wiper ring moves debris towards the gage shank in an axial direction in response to the rotation of the cutter, wherein the gage wiper ring includes a plurality of gage wipers on an outer nose wiper ring which extend at a non-zero angle relative to an axis of rotation of the cutter.

### Claim 2

A raise boring cutter, comprising:
a saddle;
a journal assembly carried by the saddle, wherein the journal assembly includes a nose shank;
a cutter carried by the journal assembly to form a cutter bearing cavity therebetween;
a nose seal assembly;
a nose wiper ring positioned proximate to the nose shank, wherein the nose wiper ring includes a nose wiper carried by the nose wiper ring on an outer wiper ring surface which extends at a non-perpendicular angle between opposed outer wiper ring surface edges of the nose wiper ring; and
wherein the nose wiper ring moves debris away from the cutter bearing cavity in response to the rotation of the cutter.

### Claim 3 (depends on 2)

The raise boring cutter of claim 2, wherein the nose wiper ring moves debris towards the nose shank in response to the rotation of the cutter.

### Claim 4 (depends on 2)

The raise boring cutter of claim 2, wherein the journal assembly includes a gage shank.

### Claim 5 (depends on 4)

The raise boring cutter of claim 4, further including a gage wiper ring positioned proximate to the gage shank, wherein the gage wiper ring move debris away from the cutter bearing cavity in response to the rotation of the cutter.

### Claim 6 (depends on 5)

The raise boring cutter of claim 5, wherein the gage wiper ring moves debris towards the gage shank in response to the rotation of the cutter.

### Claim 7 (depends on 5)

The raise boring cutter of claim 5, wherein the gage wiper ring has a larger outer dimension than the nose wiper ring.

### Claim 8

A raise boring cutter, comprising:
a saddle;
a journal assembly carried by the saddle, wherein the journal assembly includes nose and gage shanks;
a cutter carried by the journal assembly;
nose and gage seal assemblies; and
nose and gage wiper rings positioned proximate to the nose and gage shanks, respectively, wherein the nose wiper ring includes a nose wiper which extends at a non-perpendicular angle between opposed outer wiper ring surface edges of the nose wiper ring and the gage wiper ring includes a gage wiper which extends at a non-perpendicular angle between opposed outer wiper ring surface edges of the gage wiper ring;
wherein the nose and gage wiper rings move debris in opposed directions in response to the rotation of the cutter.

### Claim 9 (depends on 8)

The raise boring cutter of claim 8, wherein the nose and gage wiper rings moves debris towards the nose and gage shanks, respectively, in response to the rotation of the cutter.

### Claim 10 (depends on 8)

The raise boring cutter of claim 8, wherein the nose and gage wiper rings each include wiper ring body openings through which the journal extends.

### Claim 11 (depends on 8)

The raise boring cutter of claim 8, wherein the saddle includes a cutter recess through which the cutter extends.

### Claim 12 (depends on 8)

The raise boring cutter of claim 8, wherein the saddle includes nose and gage shank couplers coupled to the nose and gage shanks, respectively.