# US 8,783,149 B2 · Coil cutting tool and method

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- Number: US 8,783,149 B2
- Document ID: US8783149B2
- Status: Granted
- Kind: B2
- Application number: 13/079,132
- Filed: 2011-04-04
- Published: 2012-10-04
- Granted: 2014-07-22
- Earliest claimed: 2011-04-04
- Assignees: General Electric Company
- Applicants: Syed Wajahat Ali; John Matthew Sassatelli; Andrew John Tomko
- Inventors: Syed Wajahat Ali; John Matthew Sassatelli; Andrew John Tomko
- Web page: https://patentgrep.com/patent/US8783149B2

## CPC

- B23D 29/002: {for cutting wire or the like}
- B23D 15/04: having only one moving blade
- B23D 15/14: actuated by fluid or gas pressure
- H02K 15/50: Disassembling, repairing or modifying dynamo-electric machines (repairing of cooling fluid boxes H02K15/38)
- Y10T 83/04: Processes
- Y10T 83/8748: Tool displaceable to inactive position [e.g., for work loading]
- Y10T 83/8821: With simple rectilinear reciprocating motion only
- Y10T 83/8858: Fluid pressure actuated
- B23D: PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR (making toothed gears or the like B23F; cutting metal by applying heat locally B23K; arrangements for copying or controlling B23Q)
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A tool and a method are disclosed for cutting coils in a dynamoelectric machine. In an embodiment, the tool includes a blade having a cutting edge on a distal end thereof. The blade is operably connected on a proximal end thereof to a double acting hydraulic cylinder. The tool further includes at least one guide arm coupled to and extending longitudinally in a distal direction from the double acting hydraulic cylinder, wherein the at least one guide arm is disposed alongside the blade and extends parallel to a path of the blade.

## Claims

### Claim 1

A tool comprising:
a blade having a cutting edge on a distal end thereof;
a double acting hydraulic cylinder operably connected to a proximal end of the blade; and
a pair of guide arms connected to and extending longitudinally in a distal direction from the double acting hydraulic cylinder,
wherein each guide arm in the pair of guide arms is disposed alongside the blade and extends parallel to a path of the blade, each guide arm in the pair of guide arms being disposed on opposite sides of the blade, and
wherein each guide arm in the pair of guide arms includes a track dimensioned to accommodate an edge of the blade, the track being disposed on a surface of the guide arm facing the blade, such that the blade slides longitudinally in the tracks in each of the pair of guide arms, and
wherein a first guide arm in the pair of guide arms has a first hole through a distal end thereof, and a second guide arm in the pair of guide arms has a second hole through a distal end thereof; and
a pin member positioned within the first hole and the second hole such that the pin member is removably connected to both the first guide arm and the second guide arm.

### Claim 2 (depends on 1)

The tool of claim 1, further comprising a stabilizing plate affixed to each of the pair of guide arms for maintaining a distance between the pair of guide arms.

### Claim 3 (depends on 2)

The tool of claim 2, wherein the distance between the pair of guide arms accommodates a pair of end windings of a dynamoelectric machine, the pair of end windings being disposed such that a first end winding is distal of a second end winding, and the pair of end windings are disposed between the pair of guide arms.

### Claim 4 (depends on 3)

The tool of claim 3, wherein each of the first and the second end windings has a cross sectional width of between about 1.27 cm and about 3.5 cm.

### Claim 5 (depends on 1)

The tool of claim 1, further comprising a shaft coupling the blade to the double acting hydraulic cylinder.

### Claim 6 (depends on 5)

The tool of claim 5, further comprising a connector member disposed between the double acting hydraulic cylinder and the blade, the connector member including a hole therein through which the shaft passes, wherein the pair of guide arms are affixed to the connector member.

### Claim 7 (depends on 6)

The tool of claim 6, wherein the connector member is threaded on a proximal end, and the double acting hydraulic cylinder is threaded on a distal end, and the connector member and the double acting hydraulic cylinder are threadably connected.

### Claim 8 (depends on 1)

The tool of claim 1, wherein the blade further comprises steel, and wherein the pair of guide arms comprises steel.

### Claim 9 (depends on 1)

The tool of claim 1, wherein actuation of the tool provides a force of about 20.68 mPa over an area of about 20.65 cm2.