Brake pad wear sensing system and method
US6257374A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2000 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | Aug 18, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D66/028
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A vehicle brake system (12) has a rotor (24) rotatable about an axis (20) and a pad (e.g., 36A) moveable parallel to the axis to engage the rotor for creating braking force. A brake pad wear sensing system (14) for the vehicle brake system (12) includes a magnet (e.g., 50A) that provides a magnetic field. A Hall effect sensor (e.g., 52A) senses the magnetic field and outputs an electrical signal indicative of the sensed magnetic field. Means (e.g., 34A) mounts one of the magnet (e.g., 50A) and the sensor (e.g., 52A) with the pad (e.g., 36A) for movement parallel to the axis (20). Means (e.g., 30A) mounts the other of the magnet (e.g., 50A) and the sensor (e.g., 52A) at a location along the axis (20) such that the signal from the sensor is indicative of pad wear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.