Pumping apparatus for a vehicle brake system
US6672686B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 5, 2002 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Mar 5, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B53/166
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The fundamental approach of the present invention is to dispose bushes, in which pistons of a pumping apparatus for a vehicle brake system are movably disposed, in such a movable manner that they themselves may in dependence upon movements of the pistons act as pistons in order to supply brake fluid to the vehicle brake system. In particular, the bushes, whose pistons are pumping brake fluid into an associated brake circuit, do not act as pistons. On the other hand, brake fluid is fed back into a brake circuit by bushes, whose pistons are pumping substantially no brake fluid into the brake circuit but are taking in e.g. brake fluid removed from the vehicle brake system in order subsequently to pump it back into the brake circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.