Multi-layer insulator for brake piston

Patent metadata

Field	Value
Publication number	US-10968971-B2
Application number	US-201816102232-A
Country	US
Kind code	B2
Filing date	Aug 13, 2018
Priority date	Aug 13, 2018
Publication date	Apr 6, 2021
Grant date	Apr 6, 2021

Abstract

A piston assembly for a multi-disk system may comprise an adjustor sleeve and a piston configured to telescope relative to the adjustor sleeve. A puck may be located at an end of the piston. The piston assembly may include a multi-layer insulator. The multi-layer insulator may comprise a first insulator layer contacting the puck or the piston, and a second insulator layer contacting the first insulator layer. The first and second insulator layers may each comprise a solid disk.

First claim

What is claimed is:

1. A piston assembly for a multi-disk system, comprising:
an adjustor sleeve;
a piston configured to telescope relative to the adjustor sleeve;
a puck located proximate a proximal end of the piston; and
a multi-layer insulator located over a surface of the puck opposite the piston, the multi-layer insulator comprising:
a first insulator layer contacting the surface of the puck and comprising a first outer circumferential surface, a first inner circumferential surface, a first proximal surface extending continuously from the first outer circumferential surface to the first inner circumferential surface, and a first distal surface oriented away from the first proximal surface and extending continuously from the first outer circumferential surface to the first inner circumferential surface, wherein the first insulator layer comprises a first solid disk, and wherein a first material of the first insulator layer extends continuously from the first outer circumferential surface to the first inner circumferential surface and from the first distal surface to the first proximal surface, and wherein the first insulator layer includes a plurality of first protrusions extending axially from the first proximal surface; and
a second insulator layer contacting the first insulator layer and comprising a second outer circumferential surface, a second inner circumferential surface, a second proximal surface extending continuously from the second outer circumferential surface to the second inner circumferential surface, and a second distal surface oriented away from the second proximal surface and extending continuously from the second outer circumferential surface to the second inner circumferential surface, wherein the second insulator layer comprises a second solid disk, and wherein a second material of the second insulator layer extends continuously from the second outer circumferential surface to the second inner circumferential surface and from the second distal surface to the second proximal surface, and wherein the second insulator layer includes a plurality of second protrusions extending axially from the second distal surface, and wherein the plurality of first protrusions is contacting the second insulator layer.

2. The piston assembly of claim 1 , wherein the multi-layer insulator further comprises a cover plate located over the second proximal surface of the second insulator layer opposite the puck.

3. The piston assembly of claim 2 , wherein an axially extending flange of the cover plate is located radially outward of the first insulator layer and the second insulator layer, and wherein the axially extending flange contacts the puck.

4. The piston assembly of claim 2 , wherein an axial thickness of the cover plate is equal to at least one of an axial thickness of the first insulator layer or an axial thickness of the second insulator layer.

5. The piston assembly of claim 2 , wherein the cover plate comprises a plurality of axially extending surface features.

6. A multi-disk system comprising:
a friction disk; and
a piston assembly configured to apply a force to the friction disk, the piston assembly comprising:
a piston configured to translate toward the friction disk;
a puck located between the piston and the friction disk;
a first insulator layer contacting at least one of the puck or the piston, the first insulator layer comprising a first outer circumferential surface, a first inner circumferential surface, a first proximal surface extending continuously from the first outer circumferential surface to the first inner circumferential surface, and a first distal surface oriented away from the first proximal surface and extending continuously from the first outer circumferential surface to the first inner circumferential surface, wherein the first insulator layer is a first solid disk, and wherein a first material of the first insulator layer extends continuously from the first outer circumferential surface to the first inner circumferential surface and from the first distal surface to the first proximal surface, and wherein the first insulator layer comprises a plurality of first surface features extending from the first proximal surface of the first insulator layer; and
a second insulator layer contacting the first insulator layer, the second insulator layer comprising a second outer circumferential surface, a second inner circumferential surface, a second proximal surface extending continuously from the second outer circumferential surface to the second inner circumferential surface, and a second distal surface oriented away from the second proximal surface and extending continuously from the second outer circumferential surface to the second inner circumferential surface, wherein the second insulator layer is a second solid disk, and wherein a second material of the second insulator layer extends continuously from the second outer circumferential surface to the second inner circumferential surface and from the second distal surface to the second proximal surface, and wherein the second insulator layer comprises a plurality of second surface features extending from the second distal surface of the second insulator layer.

7. The multi-disk system of claim 6 , wherein at least one of the plurality of first surface features of the first insulator layer is formed by a plurality of first indentations formed in the first proximal surface of the first insulator layer or the plurality of second surface features of the second insulator layer is formed by a plurality of second indentations formed in the second distal surface of the second insulator layer.

8. The multi-disk system of claim 6 , wherein the first proximal surface of the first insulator layer is oriented toward the second distal surface of the second insulator layer.

9. The multi-disk system of claim 6 , wherein the first insulator layer and the second insulator layer are located between a first portion of the piston and a second portion of the piston.

10. The multi-disk system of claim 6 , wherein the piston assembly further comprises a cover plate located between the second insulator layer and the friction disk.

11. The multi-disk system of claim 10 , wherein the cover plate comprises a plurality of axially extending surface features.

12. The multi-disk system of claim 6 , wherein the first insulator layer and the second insulator layer are located between the puck and the piston.

Assignees

• Goodrich Corp

Inventors

• Herrmann Nathaniel J
• Stevenson John A
• Whittle Scott

Classifications

• F16D2065/785

  Heat insulation or reflection · CPC title

• F16D2069/006

  comprising a heat-insulating layer · CPC title

• F16D55/36 Primary

  Brakes with a plurality of rotating discs all lying side by side · CPC title

• F16D2055/0058

  Fully lined, i.e. braking surface extending over the entire disc circumference · CPC title

• F16D2125/06

  Pistons · CPC title