Brake system warning device
US6112859A · kind A · utility
Inventors
Key dates
| Filing date | Apr 18, 1997 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | Apr 18, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2066/003
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A monitoring system for a vehicle's air-brakes in which the push-rod extending from the brake chamber engages an electrical switch. The electrical switch, if moved to a pre-selected position (indicating that adjustment of the push-rod's connection to the brake is warranted) transmits electrical energy or other such signal to an alarm within the cab of the vehicle where either an auditory alarm is sounded or a warning lamp is illuminated. The monitoring system is operationally checked through the use of several alternative mechanisms. In one such check mechanism, a switch located near the warning lamp, allows the operator to transmit electrical energy to the remote switch located at the push-rod where the electrical energy is transmitted back to the warning lamp. In another check mechanism, a switch located near the warning lamp is used to engage a solenoid which pushes the remote switch into a transmitting position to check the entire monitoring system. In one embodiment of the invention, through the use of flip-flop switches, once the warning lamp has been activated, it remains illuminated so that, when the vehicle is returned to the garage, the mechanic is easily able to determin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.