# US 9,435,378 B1 · Roller bearing outer race for hydraulic unit

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- Number: US 9,435,378 B1
- Document ID: US9435378B1
- Status: Granted
- Kind: B1
- Application number: 14/669,661
- Filed: 2015-03-26
- Published: 2016-09-29
- Granted: 2016-09-06
- Earliest claimed: 2015-03-26
- Assignees: Hamilton Sundstrand Corporation
- Applicants: Hamilton Sundstrand Corporation
- Inventors: Kris H. Campbell; Glenn C. Lemmers, Jr.; Doren C. Smith; Edward C. Allen; Jong-Yeong Yung
- Web page: https://patentgrep.com/patent/US9435378B1

## CPC

- F16C 33/581: {integral with other parts, e.g. with housings or machine elements such as shafts or gear wheels}
- F16C 35/047: {with a base plate substantially parallel to the axis of rotation, e.g. horizontally mounted pillow blocks}
- F16C 2326/43: Aeroplanes; Helicopters
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS

## Abstract

A roller bearing outer race of a hydraulic unit has a body comprising a central section having an exterior curved portion, an exterior angled portion, and a circular inner portion, wherein a central aperture defining a first axis passes through the circular inner portion of the central section, a first arm extending from a first side of the central section, and a second arm extending from a second side of the central section. A race within the circular inner portion of the central section, the race defined by a first race wall and a second race wall and wherein a thickness of the first arm and the second arm is about 0.450 inches (1.143 cm) and a radial distance of an exterior surface of the exterior curved portion from the first axis is about 0.657 inches (1.669 cm).

## Claims

### Claim 1

A roller bearing outer race of a hydraulic unit, comprising:
a body comprising:
a central section having an exterior curved portion, an exterior angled portion, and a circular inner portion, wherein a central aperture defining a first axis passes through the circular inner portion of the central section;
a first arm extending from a first side of the central section; and
a second arm extending from a second side of the central section;
a race within the circular inner portion of the central section, the race defined by a first race wall and a second race wall;
wherein a thickness of the first arm and the second arm is about 0.450 inches (1.143 cm) and a radial distance of an exterior surface of the exterior curved portion from the first axis is about 0.657 inches (1.669 cm).

### Claim 2 (depends on 1)

The roller bearing outer race of claim 1, wherein the variability of the thickness of the first arm and the second arm is about +/−0.010 inches (0.025 cm).

### Claim 3 (depends on 1)

The roller bearing outer race of claim 1, wherein the variability of the radial distance of the exterior surface is about +/−0.015 inches (0.038 cm).

### Claim 4 (depends on 1)

The roller bearing outer race of claim 1, wherein the race has an axial thickness, in the direction of the first axis, of about 0.211 inches (0.536 cm) with a variability of about +/−0.003 inches (0.008 cm).

### Claim 5 (depends on 1)

The roller bearing outer race of claim 1, wherein the first race wall has an axial thickness, in the direction of the first axis, of about 0.080 inches (0.203 cm) with a variability of about +/−0.003 inches (0.008 cm).

### Claim 6 (depends on 1)

The roller bearing outer race of claim 1, wherein the diameter of the race is about 1.060 inches (2.692 cm) with a variability of about 0.003 inches (0.008 cm).

### Claim 7 (depends on 1)

The roller bearing outer race of claim 1, wherein at least one of the first arm and the second arm have an aperture extending therethrough with a second axis that is perpendicular to the first axis.

### Claim 8 (depends on 1)

The roller bearing outer race of claim 1, wherein the first arm extends a distance of about 1.047 inches (2.659 cm) with a variability of about +/−0.015 inches (0.038 cm) from the first axis.

### Claim 9 (depends on 1)

The roller bearing outer race of claim 1, wherein the second arm extends a distance of about 1.047 inches (2.659 cm) with a variability of about +/−0.015 inches (0.038 cm) from the first axis.

### Claim 10 (depends on 1)

The roller bearing outer race of claim 1, configured to operate within a hydraulic unit.