Hydraulic brake booster
US6732518B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2002 |
| Grant date | May 11, 2004 |
| Priority date | — |
| Expiry date | Dec 2, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/145
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hydraulic brake booster for use in a brake system having a housing with a power piston located in a first bore and a control valve located in a second bore. An input member is connected to the power piston and linked to the control valve by a lever arrangement. The input member is characterized by a cylindrical body with a shaft attached thereto. A bracket with a radial opening is carried by the shaft and urged toward a head on the shaft by a spring. The lever arrangement is characterized by a first lever with a first end pivotally secured in the housing by a first pin and a second end located in the radial opening of the bracket and a second lever pivotally secured at a fulcrum on the first lever by a second pin extending through the first and second levers. A first input force applied to the cylindrical body is transmitted through the spring into the bracket and communicated through the fulcrum point to bring a first end of the second lever into engagement with the control valve and a second end of the second lever into engagement with the power piston. The first input force as applied to the bracket causes the end of the first lever to pivot about the first pin and transmit an…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.