Parking brake system for a work vehicle
US9328822B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2014 |
| Grant date | May 3, 2016 |
| Priority date | — |
| Expiry date | Oct 30, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H63/345
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A parking brake system for a work vehicle may include an internal braking mechanism and an external brake actuator. The brake actuator may generally include a housing at least partially defining a rod-side chamber, a secondary chamber and a piston-side chamber extending between the rod-side and secondary chambers. The brake actuator may also include a primary piston movable between a first position at which the braking mechanism is actuated to an engaged state and a second position at which the braking mechanism is actuated to a disengaged state. In addition, the brake actuator may include a secondary piston at least partially housed within the secondary chamber that is configured to apply a force against the primary piston when fluid is supplied within the secondary chamber in order to move the primary piston from the first position to the second position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.