# US 10,478,900 B2 · Crash resistant trip for a pipe machining apparatus

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- Number: US 10,478,900 B2
- Document ID: US10478900B2
- Status: Granted
- Kind: B2
- Application number: 16/157,064
- Filed: 2018-10-10
- Published: 2019-02-28
- Granted: 2019-11-19
- Earliest claimed: 2015-08-12
- Assignees: Illinois Tool Works Inc.
- Applicants: Illinois Tool Works Inc.
- Inventors: Roy C. Coakley
- Web page: https://patentgrep.com/patent/US10478900B2

## CPC

- B23B 5/163: {with an external clamping device}
- B23B 1/00: Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods
- B23B 3/26: the tools of which perform a radial movement; Rotary tool heads thereof
- B23B 2210/08: Tools comprising intermediary toolholders
- B23B 2215/72: Tubes, pipes
- B23B 2260/02: Cams
- B23Q 9/0021: {the tool being guided in a circular path}
- B23Q 9/0057: {and being capable of guiding the tool in a circular path}
- B23B: TURNING; BORING (arrangements for copying or controlling B23Q)
- B23Q: DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING (tools of the kind used in lathes or boring machines B23B27/00); MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT

## Abstract

A pipe machining apparatus includes a frame, a tool support, an advancement device, and an advancement member. The tool support is coupled to and movable relative to the frame. The tool support is adapted to support a tool and move the tool in a direction toward a pipe at an increment. The advancement device includes an advancement projection fixedly attached to the frame. The advancement projection includes a contact-surface. The advancement member is coupled to the tool support. Upon the advancement member contacting the contact-surface of the advancement projection the advancement member is adapted to advance the tool towards the pipe at the increment. The contact-surface of the advancement projection is shaped to always be in a non-perpendicular contact position with the advancement member.

## Claims

### Claim 1

A method of operating a pipe machining apparatus, the method comprising:
fixedly coupling a frame of the pipe machining apparatus to a pipe;
moving a tool support relative to the frame, wherein the tool support is moveably coupled to the frame;
advancing a tool coupled to the tool support toward the pipe at an increment due to an advancement member, coupled to the tool support, contacting a first linear contact-surface of a first advancement projection fixedly attached to the frame; and
advancing the tool coupled to the tool support toward the pipe at the increment due to the advancement member contacting a second linear contact-surface of a second advancement projection fixedly attached to the frame.

### Claim 2 (depends on 1)

The method of claim 1 further comprising moving the first and second advancement projections into and out of a path of the advancement member.

### Claim 3 (depends on 1)

The method of claim 1 wherein the advancement member comprises a star.

### Claim 4 (depends on 1)

The method of claim 1 wherein the advancement member comprises a star and the first and second advancement projections each respectively comprise a semi-circle.

### Claim 5 (depends on 1)

The method of claim 1 further comprising the advancement member rotating upon contact with the first linear contact-surface of the first advancement projection and upon contact with the second linear contact-surface of the second advancement project.

### Claim 6 (depends on 5)

The method of claim 5 further comprising the rotation of the advancement member causing a worm gear, a drive gear, and a feed screw to rotate thereby advancing the tool towards the pipe at the increment.

### Claim 7

A method of operating a pipe machining apparatus, the method comprising:
fixedly coupling a frame of the pipe machining apparatus to a pipe;
moving a tool support relative to the frame, wherein the tool support is moveably coupled to the frame;
advancing a tool coupled to the tool support toward the pipe at an increment due to an advancement member, coupled to the tool support, contacting a linear contact-surface of an advancement projection fixedly attached to the frame; and
moving the advancement projection into and out of a path of the advancement member.

### Claim 8 (depends on 7)

The method of claim 7 wherein the advancement member comprises a star.

### Claim 9 (depends on 7)

The method of claim 7 wherein the advancement member comprises a star and the advancement projection comprises a semi-circle.

### Claim 10 (depends on 7)

The method of claim 7 further comprising the advancement member rotating upon contact with the linear contact-surface of the advancement projection.

### Claim 11 (depends on 10)

The method of claim 10 wherein the advancement member rotating upon contact with the linear contact-surface of the advancement projection causes a worm gear, a drive gear, and a feed screw to rotate thereby advancing the tool towards the pipe at the increment.