Patent · US Active

Pressure compensation element, in particular for pressure compensation in a housing

US8292109B2 · kind B2 · utility

12Cited by

6References

14Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Detlef Lauk · Renchen, DE
Norbert Wegner · Laufenburg (Baden), DE
Gerald Maier · Bühl, DE
Mario Huesges · Bühl, DE
Andreas Mueller · Kaufbeuren, DE
Regina Neigel · Laufenburg (Baden), DE

Key dates

Filing date	Jul 31, 2007
Grant date	Oct 23, 2012
Priority date	—
Expiry date	Apr 25, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49826
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

The invention relates to a pressure compensation device for compensating pressure between an inner chamber of a housing, in particular an electric motor, gearbox, container or the like and an outer side. The device includes a pressure compensation membrane mounted on an annular end face of a cylindrical structure that extends toward the outer side. The cylindrical structure is provided with a ventilation channel that extends therethrough. The cylindrical structure extends towards the outer side in order to form a projection from the wall of the housing, which projection is delimited by the end face on which the membrane is applied in a curved, dome-shaped form. A protective cover extends towards the outer side at a spaced apart distance in relation to the membrane over the cylindrical structure.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.