Self-retaining end cap for braking booster
US8468932B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 3, 2010 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | Dec 23, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49826
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A brake booster includes a housing configured for mounting to the master cylinder of a braking system. The housing defines a bore for receiving a power piston and an end cap, with a return spring disposed between the head of the piston and end cap. The housing and end cap define a recess and a rib sized to be received within the rib but configured for an interference fit between the end cap and housing outside the recess. The interference fit is calibrated to require a force to push the end cap into the bore that exceeds the force generated by the return spring when it is compressed between the end cap and the piston head. The recess and rib at least temporarily retains the spring within the bore until the brake booster is mounted to the master cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.