# US 10,309,235 B2 · Shiplap cantilevered stator

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- Number: US 10,309,235 B2
- Document ID: US10309235B2
- Status: Granted
- Kind: B2
- Application number: 13/595,443
- Filed: 2012-08-27
- Published: 2014-09-04
- Granted: 2019-06-04
- Earliest claimed: 2012-08-27
- Assignees: United Technologies Corporation
- Applicants: Normand P. Jacques; Anthony R. Bifulco
- Inventors: Normand P. Jacques; Anthony R. Bifulco
- Web page: https://patentgrep.com/patent/US10309235B2

## CPC

- F01D 9/02: Nozzles; Nozzle boxes; Stator blades; Guide conduits {, e.g. individual nozzles (nozzle boxes F01D9/047)}
- F01D 5/3038: {the slot having inwardly directed abutment faces on both sides}
- F01D 9/042: {fixing blades to stators (fixing stator-rings in the casing or to each other F01D25/246)}
- F01D 11/005: {Sealing means between non relatively rotating elements}
- F01D 25/246: {Fastening of diaphragms or stator-rings}
- F05D 2230/60: Assembly methods
- F05D 2230/64: using positioning or alignment devices for aligning or centring, e.g. pins
- F05D 2230/70: Disassembly methods
- F05D 2240/12: Fluid guiding means, e.g. vanes
- F05D 2240/80: Platforms for stationary or moving blades
- Y02T 50/60: Efficient propulsion technologies, e.g. for aircraft
- F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D)
- F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A disclosed stator vane assembly includes a plurality of stator vane elements supported within a case about an axis. Each of the plurality of stator vane elements includes a platform having a recess on a first side and a tongue on a second side. The tongue overlaps a recess of an adjacent one of the plurality of stator vane elements with at least one of the recess and the tongue includes a crowned surface forming a seal.

## Claims

### Claim 1

A compressor assembly comprising:
a case disposed about an axis; and
a stator vane supported within the case and including a platform with a first side including a recess and a second side including a tongue for overlapping a recess on a platform of an adjacent stator vane, wherein both the first side and the second side are disposed at an angle relative to the axis.

### Claim 2 (depends on 1)

The compressor assembly as recited in claim 1, wherein the angle is between about 5° and 45° degrees.

### Claim 3 (depends on 1)

The compressor assembly as recited in claim 1, wherein the first side is substantially parallel with the second side.

### Claim 4 (depends on 1)

The compressor assembly as recited in claim 1, wherein one of the recess and the tongue include a crowned surface forming a seal with the other of the recess and the tongue.

### Claim 5 (depends on 1)

The compressor assembly as recited in claim 1, including hooks extending from front and back sides of the platform and received within channels defined within an interior of the case, wherein the hooks are disposed parallel to the axis.

### Claim 6 (depends on 5)

The compressor assembly as recited in claim 5, including a liner disposed between each of the hooks and the channels for reducing wear and providing damping between the stator vane and the case.

### Claim 7 (depends on 1)

The compressor assembly as recited in claim 1, including a plurality of stator vanes supported within the case about the axis, and at least one of the plurality of stator vanes includes an anti-rotation feature for preventing rotation of the plurality of stator vanes about the axis.

### Claim 8 (depends on 7)

The compressor assembly as recited in claim 7, wherein the anti-rotation feature includes a boss defining an opening for receiving a pin attached to the case.

### Claim 9

A stator vane stage comprising:
a plurality of stator vanes supported within a case about an axis, wherein each of the plurality of stator vanes includes a platform having a recess on a first side and a tongue on a second side, wherein the tongue overlaps a recess of an adjacent one of the plurality of stator vanes, wherein at least one of the recess and the tongue includes a crowned surface forming a seal.

### Claim 10 (depends on 9)

The stator vane stage as recited in claim 9, wherein the first side and the second side are disposed at an angle relative to the axis.

### Claim 11 (depends on 9)

The stator vane stage as recited in claim 9, wherein the first side is substantially parallel to the second side.

### Claim 12 (depends on 9)

The stator vane stage as recited in claim 9, wherein at least one of the plurality of stator vanes includes a boss defining an opening for receiving a pin attached to the case for preventing rotation of the plurality of stator vanes relative to the case.

### Claim 13 (depends on 12)

The stator vane stage as recited in claim 12, wherein the platform for each of the stator vanes includes hooks received within channels of the case and a liner disposed between the hooks and the channel for reducing wear.

### Claim 14 (depends on 9)

The stator vane stage as recited in claim 9, wherein the tongue is disposed on a gas path side of the platform.

### Claim 15 (depends on 9)

The stator vane stage as recited in claim 9, wherein the tongue is disposed on a non-gas path side of the platform.

### Claim 16

A stator vane comprising: a platform including a first side having a recess, a second side having a tongue, and first and second ends having hooks, wherein the tongue overlaps a recess on an adjacent stator vane; and an airfoil extending from the platform, wherein first and second sides are disposed at a non-normal angle relative to the first and second ends, including a crowned surface on one of the recess and the tongue for forming a seal at the interface between a recess and a tongue of adjacent stator vanes.