Pneumatic servomotor for power-assisted braking, the servomotor having a crimped diaphragm
US7194946B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Oct 6, 2004 |
| Grant date | Mar 27, 2007 |
| Priority date | — |
| Expiry date | Oct 12, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/569
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A pneumatic servomotor (12) for power-assisted braking for a motor vehicle, which servomotor is of the type having a substantially cylindrical rigid casing (16) inside which a moving transverse partition (18) is movably mounted that has a peripheral skirt (28) which is made of sheet metal and which is covered, at least in the vicinity of its periphery (40), with a sealing diaphragm (30) made of an elastomer material and whose periphery (32) is fixed to the casing (16) in leaktight manner, said servomotor being characterized in that, in the vicinity of the periphery (40) of the skirt (28), the skirt is provided with a stamped annular recess (42) defining an internal groove (44) which serves to receive snugly a peripheral bead (46) which projects from the surface of the diaphragm (30) in order to fix the diaphragm (30) to the skirt (28) in leaktight manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.