Disk brake with stroke indicator
US5632359A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1995 |
| Grant date | May 27, 1997 |
| Priority date | — |
| Expiry date | Feb 21, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D66/025
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A wear indicator for a disk brake having a caliper that slides in a carrier to apply friction pads against a disk. The wear indicator comprises a continuous variation sensor, such as a capacitive sensor, connected to a monitor. The capactive sensor has first and second electrodes having a variable overlap area. A guide pin for the caliper forms the first electrode. As the guide pin moves during a brake application, the monitor periodically measures the overlap area to define a current operational output signal which is compared with a predetermined signal and when the comparison differs from a normal result a failure signal is provided to indicate that the disk brake in not properly operating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.