Slipper retainer ball for hydraulic unit

Patent metadata

Field	Value
Publication number	US-9719499-B2
Application number	US-201514598301-A
Country	US
Kind code	B2
Filing date	Jan 16, 2015
Priority date	Jan 16, 2015
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

A slipper retainer ball of a hydraulic unit having an aperture passing through a body, the body having a flat bottom surface, a flat top surface, an external curved surface, and an interior profiled surface that extends in an axial direction from the bottom surface to the top surface. The interior profiled surface includes a first surface extending parallel to the axis from the bottom surface in the axial direction, a second surface extending perpendicular to the axis from the first surface and outward toward the external curved surface, a third surface extending from the second surface axially at a first angle, a fourth surface extending from the third surface in the axial direction, and a fifth surface extending from the fourth surface to the top surface at a second angle that is skew from the axis. The axial thickness of the body is about 0.471 inches.

First claim

What is claimed is:

1. A slipper retainer ball of a hydraulic unit, comprising:
a partial spherical body having an aperture passing through a center of the body and defining an axis, the body having a flat bottom surface, a flat top surface, an external curved surface, and an interior profiled surface that extends in an axial direction from the bottom surface to the top surface;
the interior profiled surface comprising:
a first surface extending parallel to the axis from the bottom surface in the axial direction;
a second surface extending perpendicular to the axis from the first surface and radially outward toward the external curved surface;
a third surface extending from the second surface in the axial direction at a first angle that is skew from the axis;
a fourth surface extending from the third surface parallel to the axis and in the axial direction; and
a fifth surface extending from the fourth surface to the top surface at a second angle that is skew from the axis;

wherein the axial thickness of the body extending between the bottom surface and the top surface is about 0.471 inches (1.196 cm).

2. The slipper retainer ball of claim 1 , wherein the axial thickness of the body has a variability of about +/−0.010 inches (0.0.25 cm).

3. The slipper retainer ball of claim 1 , wherein a diameter of the aperture along the first surface is about 0.828 inches (2.103 cm) with a variability of about +/−0.005 inches (0.013 cm).

4. The slipper retainer ball of claim 1 , wherein a diameter of the aperture along the fourth surface is about 0.9656 inches (2.4526 cm) with a variability of about +0.0007 inches (0.0018 cm) and about −0.0000 inches (0.0000 cm).

5. The slipper retainer ball of claim 1 , wherein a diameter of the partial spherical body from radially opposing points on the exterior curved surface is about 1.1090 inches (2.8169 cm) with a variability of about +0.0000 inches (0.0000 cm) and about −0.0006 inches (0.0015 cm).

6. The slipper retainer ball of claim 1 , wherein the axial thickness of the body between the top surface and the second surface of the interior profiled surface is about 0.348 inches (0.884 cm) with a variability of about +/−0.002 inches (0.005 cm).

7. The slipper retainer ball of claim 1 , wherein the axial thickness of the body between the top surface and a transition point between the third surface and the fourth surface is about 0.314 inches (0.798 cm) with a variability of about +/−0.002 inches (0.005 cm).

8. The slipper retainer ball of claim 1 , wherein at least a part of the profiled interior surface of the body is configured to movably engage with a shaft of a hydraulic unit.

9. The slipper retainer ball of claim 1 , wherein at least a part of the exterior curved surface of the body is configured to slidably engage with a slipper retainer.

10. The slipper retainer ball of claim 1 , wherein the first angle is about 23° with a variation of about +/−2°.

11. The slipper retainer ball of claim 1 , wherein the second angle is about 30° with a variation of about +/−5°.

12. The slipper retainer ball of claim 1 , wherein the slipper retainer ball is configured within a hydraulic unit.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Campbell Kris H
• Lemmers Jr Glenn C
• Franklin Mark J

Classifications

• F03C1/0602

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• F04B1/2078

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• F04B1/2014

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• F04B1/146

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• F04B1/2092

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