Dual master cylinder brake assembly with quick-fill function
US11173887B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 17, 2017 |
| Grant date | Nov 16, 2021 |
| Priority date | — |
| Expiry date | May 17, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T2201/12
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hydraulic brake assembly (12) includes a housing (24) having first and second side-by-side bores (30), each defining a respective master cylinder assembly. Each master cylinder assembly includes a master cylinder piston (32) slidably movable by actuation of a respective brake pedal (18a, 18b) to and between an active position and an inactive position. A spool (74) slidably disposed within a piston bore (70) of the master cylinder piston (32) is operable in a first mode to direct hydraulic fluid from a quick-fill chamber (62) to a master cylinder chamber (50) at a first pressure upon initial movement of the master cylinder piston (32) from the inactive position toward the active position. The spool (74) is operable in a second mode to direct hydraulic fluid from the quick-fill chamber (62) to a tank (20) when pressure in the master cylinder chamber (50) reaches a predefined threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.