Multi-piston caliper

• US 10,539,199 B2
• Filed: 01/08/2018
• Issued: 01/21/2020
• Est. Priority Date: 01/20/2017
• Status: Active Grant

• Current Assignee: Akebono Brake Industry Company Limited (Akebono Brake Corporation)
• Original Assignee: Akebono Brake Industry Company Limited (Akebono Brake Corporation)
• Inventors: Wilson, Kirby Lee, Keller, Andreas, Smith, Adrian
• Primary Examiner(s): Irvin, Thomas W
• Application Number:
  US15/864,099
• Publication Number:
  US 20180209495A1
• Time in Patent Office: 743 Days
• CPC Class Codes: F16D 2055/0016 Brake calipers
• CPC Class Codes: F16D 2055/0066 Brakes having more than one actuator on the same side of the disc
• CPC Class Codes: F16D 2055/0091 Plural actuators arranged side by side on the same side of the rotor
• CPC Class Codes: F16D 2121/04 acting on a piston-type actuator, e.g. for liquid pressure
• CPC Class Codes: F16D 2125/10 Plural pistons interacting by fluid pressure, e.g. hydraulic force amplifiers using different sized pistons
• CPC Class Codes: F16D 55/228 with a separate actuating member for each side
• CPC Class Codes: F16D 65/0068 Brake calipers
• CPC Class Codes: F16D 65/183 with force-transmitting members arranged side by side acting on a spot type force-applying member

Abstract

A caliper comprising: (a) an inboard side; (b) an outward side, wherein the inboard side and the outboard side include three or more bores that are radially staggered relative to two or more of the bores; and (c) a pocket located within a central region of the inboard side, the outboard side, or both; wherein the bores on the inboard side, the outboard side, or both are positioned so that: (i) all of the bores are located entirely radially below the pocket; (ii) none of the bores are located below the pocket; (iii) one or more of the bores are located partially radially below the pocket; (iv) one or more of the bores are located entirely radially below the pocket; (v) one or more of the bores are not located partially or entirely radially below the pocket; or (vi) a combination of (iii) through (v).

Claims

1. A caliper comprising:

a. an inboard side including three or more bores, wherein one or more of the three or more bores is radially staggered relative to two or more of the three or more bores;

b. an outboard side including three or more bores, wherein one or more of the thee or more bores on the outboard side is radially staggered relative to two or more of the three or more bores on the outboard side; and

c. a pocket located within a central region of the inboard side, the outboard side, or both;

d. a bisecting line that extends through the pocket;

wherein the three or more bores on the inboard side, the outboard side, or both are positioned so that;

i. all of the three or more bores are located entirely radially below the pocket;

ii. none of the three or more bores are located entirely or partially radially below the pocket;

iii. one or more of the three or more bores are located partially radially below the pocket;

iv. one or more of the three or more bores are located entirely radially below the pocket;

v. one or more of the three or more bores are not located partially or entirely radially below the pocket;

or

vi. a combination of (iii) through (v), and

wherein the pocket is a single pocket, and all of the three or more bores on the inboard side, the outboard side, or both are located entirely circumferentially spaced from the bisecting line, and the pocket is asymmetrically located between the three or more bores on the inboard side, the outboard side, or both.

2. The caliper of claim 1, wherein the caliper includes a leading region that is located on a first side of the bisecting line, and a trailing region that is located on a second side of the bisecting line and one or more of the three or more bores on the inboard side, the outboard side, or both are located entirely in the leading region, entirely in the trailing region, or both.

3. The caliper of claim 1, wherein the caliper includes a leading region that is located on a first side of the bisecting line, and a trailing region that is located on a second side of the bisecting line, and the bisecting line extends through one or more of the three or more bores on the inboard side, the outboard side, or both.

4. The caliper of claim 2, wherein the one or more bores located in the leading region, the trailing region, or both are partially or entirely located radially below the pocket.

5. The caliper of claim 4, wherein the one or more bores located in the leading region are partially or entirely located below the pocket and the one or more bores located in the trailing region are entirely located radially outside of a location below the pocket.

6. The caliper of claim 4, wherein the one or more bores located in the trailing region are partially or entirely located below the pocket and the one or more bores located in the leading region are entirely located radially outside of a location below the pocket.

7. The caliper of claim 1, wherein the three or more bores on the inboard side and the three or more bores on the outboard side are each four or more bores.

8. The caliper of claim 7, wherein two of the four or more bores are located in the leading region and two of the four or more bores are located in the trailing region, and the two or more bores in the trailing region and the two or more bores in the leading region are asymmetrically located relative to the bisecting line.

9. The caliper of claim 1, wherein the pocket on the outboard side is a through hole and the pocket on the inboard side is a depression.

10. The caliper of claim 1, wherein the pocket on the outboard side and the inboard side are flares that are connected to one or more windows that extend from the inboard side to the outboard side.

11. The caliper of claim 1, wherein at least two of the three or more bores are located in a leading region of the caliper, and at least two of the three or more bores are located in a trailing region of the caliper, and the two or more bores in the trailing region are located a greater distance from the bisecting line than the two or more bores in the leading region.

12. A caliper comprising:

a. an inboard side including three or more bores, wherein one or more of three or more bores is radially staggered, and partially or entirely radially stacked relative to one or more of the three or more bores; and

b. an outboard side including three or more bores on the outboard side, wherein one or more of the three of more bores on the outboard side is radially staggered and partially or entirely radially stacked relative to one or more of the three or more bores on the outboard side; and

wherein the inboard side and the outboard side include;

i. a top;

ii. a bottom,

iii. a trailing side connecting the inboard side and the outboard side, and

iv. a leading side connecting the inboard side and the outboard side;

wherein the one or more bores that are radially staggered and partially or entirely stacked on the inboard side, the outboard side, or both are located proximate to the top and one or more bores are located proximate to the bottom, and the one or more bores located proximate to the top have a larger diameter than the one or more bores located proximate to the bottom.

13. The caliper of claim 12, wherein the three or more bores on the inboard side, the outboard side, or both are four bores and the one or more bores that are radially staggered and partially or entirely stacked are located proximate to the top and two bores are located proximate to the bottom.

14. The caliper of claim 13, wherein two bores are located proximate to the top and two bores are located proximate to the bottom.

15. The caliper of claim 12, wherein the inboard side, the outboard side, or both include four bores and a bore located towards the trailing side and at the top is the largest bore of the four bores.

16. The caliper of claim 12, wherein a bisecting line bisects the caliper so that a leading region is on a first side of the bisecting line and a trailing region is located on a second side of the bisecting line, and one or more bores of the three or more bores are located in the leading region and one or more bores of the three or more bores are located in the trailing region;

wherein the one or more bores of the three or more bores located in the trailing region are located a greater distance from the bisecting line than the one or more bores of the three or more bores in the leading region.

17. The caliper of claim 16, wherein the leading region includes two or more of the three or more bores, and the trailing region includes two or more of the three or more bores.