Automatic parking brake for truck mounted brake cylinder
US9821822B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2015 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | Aug 25, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2127/06
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An automatic parking brake for a truck mounted brake cylinder. The automatic parking brake includes rod that is interconnected to a piston of the brake cylinder and can prevent the piston from returning to the brakes releases position. The rod is controlled by locking nut that will rotate if the rod moves axially through the locking nut and a locking sleeve that is moveable between a locked position, where the locking sleeve engages the locking nut and prevents from the nut from rotating, and a released position, where the locking sleeve is disengages from the locking nut and the locking nut is free to rotate. A spring provides a force biasing the locking nut into the locked position, and brake pipe pressure biases the locking sleeve into the released position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.