Brake booster of tandem type
US4718328A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1986 |
| Grant date | Jan 12, 1988 |
| Priority date | — |
| Expiry date | Jun 11, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/57
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A brake booster of tandem type comprises a pair of power pistons, a valve body internally housing a valve mechanism and a center body formed with a passage which communicates with a passage formed in the vlave body, all of which are integrally connected together, by holding them between a hub which is disposed through these members in alignment with their axes and a nut which is threadably engaged with the hub. An ear is formed on one of the outer peripheral surface of the hub and in an opening formed in the front power piston through which the hub extends while a recess is formed in the other for receiving the ear, thus allowing the hub and the front power piston to be positioned relative to each other by the engagement between the ear and the recess.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.