Apparatus for regulating pressure in the hydraulic brake system
US6347841B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Nov 9, 1999 |
| Grant date | Feb 19, 2002 |
| Priority date | — |
| Expiry date | Nov 9, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T11/228
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An apparatus connectable to a brake master cylinder for regulating pressure in a hydraulic brake system. The apparatus includes an outer casing housing a cylinder portion and a piston slidable therewithin. A pressure chamber forms between the cylinder wall and the piston. The piston includes a seal within an outer groove to prevent fluid leakage. The cylinder portion includes an inlet hole for hydraulic fluid flow into the cylinder and an air discharge valve. A fixing member having an extension with a concave portion is threadably attached to the lower end of the case, and a rod portion of the piston slidably fits into the concave portion. A spring providing a constant pre-pressure is located between a shoulder of the piston and a pressure controlling member abutting the fixing member, such that the end of the rod remains a fixed distance from the bottom of the concave portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.