Patent · US Active

Vehicle hydraulic brake unit having a cylinder bore and piston with rotation prevention parts

US12060869B2 · kind B2 · utility

0Cited by

4References

15Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Andreas Weh · Kempten (Allgäu), DE
Martin Hagspiel · Rettenberg, DE
Matthias Mayr · Rettenberg, DE
Stefan Kaserer · Ofterschwang, DE

Key dates

Filing date	Mar 18, 2020
Grant date	Aug 13, 2024
Priority date	—
Expiry date	Feb 11, 2041

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B19/22
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A semicircular rotation prevention part for preventing rotation of a piston of a hydraulic unit of an externally-powered hydraulic vehicle brake system. The rotation prevention part is positioned in a congruent widened section at a mouth of a cylinder bore of a hydraulic block of the hydraulic unit and includes axially parallel rotation prevention grooves on its inner circumference, with which shoulders projecting outwards from the piston engage.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.