# US 10,502,059 B2 · Alignment tie rod device and method of utilization

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- Number: US 10,502,059 B2
- Document ID: US10502059B2
- Status: Granted
- Kind: B2
- Application number: 14/611,842
- Filed: 2015-02-02
- Published: 2018-03-08
- Granted: 2019-12-10
- Earliest claimed: 2015-02-02
- Assignees: United Technologies Corporation
- Applicants: United Technologies Corporation
- Inventors: Nicholas R. Leslie; Matthew S. Verbiscus; Mark J. Rogers; Eric A. Kuehne; Reese Kincaid
- Web page: https://patentgrep.com/patent/US10502059B2

## CPC

- F01D 5/06: Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections {(F01D5/022, F01D5/023 take precedence)}
- F01D 5/066: {Connecting means for joining rotor-discs or rotor-elements together, e.g. by a central bolt, by clamps}
- F16B 5/0275: {the screw-threaded element having at least two axially separated threaded portions (F16B5/0283 takes precedence)}
- F16B 33/002: {Means for preventing rotation of screw-threaded elements (F16B39/00 takes precedence)}
- F16B 35/048: {Specially-shaped necks (F16B35/06 takes precedence)}
- F16B 2200/40: Clamping arrangements where clamping parts are received in recesses of elements to be connected
- F16B 2200/506: bolted or riveted
- F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D)
- F16B: DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING (couplings for transmitting rotation F16D)

## Abstract

An alignment tie rod device for connecting multiple components from generally opposite directions includes a shaft extending along a centerline. A first structure of the device includes opposing first and second rims and a base portion spanning between the rims. The base portion and rims define a channel that extends substantially normal to the centerline. A hole in the base portion is centered between the rims and communicates through the base portion for receipt of the shaft. An anti-rotation feature disposed operably within the channel is rigidly engaged to and projects radially outward from the shaft in diametrically opposed direction. The feature has diametrically opposite, arcuate, edges each having a radius of curvature that is substantially greater than a distance measured between the rims.

## Claims

### Claim 1

An alignment tie rod device comprising:
a shaft extending along a centerline;
a first structure including opposing first and second rims and a base portion spanning between the first and second rims with the base portion and the rims defining a channel in the first structure extending normal to the centerline, wherein a hole in the base portion communicates with the channel and is spaced from and centered between the first and second rims for receipt of the shaft, and the rims are spaced apart by a rim distance; and
an anti-rotation feature rigidly engaged to the shaft and projecting radially outward in diametrically opposed directions, the anti-rotation feature having diametrically opposite arcuate first and second edges each having a radius of curvature and a longitudinally extending chamfer, and wherein a ratio of the rim distance over the radius of curvature is equal to or less than 0.28,
wherein the first and second edges are joined to one another by third and fourth edges, wherein the third and fourth edges extend in a radial direction relative to the centerline,
wherein a first flanking location of the first edge contacts the first rim and a second flanking location of the second edge contacts the second rim when the anti-rotation feature is rotated about the centerline from a disengaged state to an engaged state,
wherein the first flanking location is laterally offset from the third edge relative to the centerline, and
wherein the second flanking location is laterally offset from the fourth edge relative to the centerline and the anti-rotation feature has an axial width that is less than an axial depth of the channel to facilitate rotational movement of the anti-rotational feature from the disengaged state to the engaged state.

### Claim 2 (depends on 1)

The alignment tie rod device set forth in claim 1, wherein the respective radius of curvatures for the first and second edges are equivalent.

### Claim 3 (depends on 2)

The alignment tie rod device set forth in claim 2, wherein the shaft has opposite first and second end portions and the anti-rotation feature is axially disposed between the end portions.

### Claim 4 (depends on 1)

The alignment tie rod device set forth in claim 1, wherein the first structure and the anti-rotation feature are made of the same material.

### Claim 5 (depends on 1)

The alignment tie rod device set forth in claim 1, further comprising:
a second structure including a side in biased contact with the first and second rims and at least in-part exposed to the channel with a hole in the second structure communicating through the side for receipt of the shaft.

### Claim 6 (depends on 1)

The alignment tie rod device set forth in claim 1, further comprising:
a second structure including a side in biased contact with the first and second rims and at least in-part exposed to the channel with a hole in the second structure communicating through the side for receipt of the shaft;
a first nut threadably engaged to a first end portion of the shaft that projects outward from the second structure opposite the first structure;
a bushing disposed about the shaft and in axially biased contact with the first structure opposite the second structure; and
a second nut threadably engaged to a second end portion of the shaft opposite the first end portion and that projects outward from the bushing.

### Claim 7 (depends on 6)

The alignment tie rod device set forth in claim 6, further comprising:
a third structure with an aperture through which the bushing and the shaft extend, and wherein the bushing has a radially outward projecting flange with the third structure located axially between the flange and the first structure, the third structure being in biased contact with the flange, and the second nut being in contact with the flange opposite the third structure.