Mount having hydraulic damping action and membrane therefor

US4726573A · kind A · utility

Assignee

• Firma Carl Freudenberg · DE

Inventors

• Arno Hamaekers · Gorxheimertal, DE
• Hans-Joachim Rudolf · Rodenkirchen, DE
• Arnold Simuttis · Bad Kreuznach, DE

Key dates

• Filing date: Jun 11, 1986
• Grant date: Feb 23, 1988
• Expiry date: Jun 11, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/7891
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A membrane for a mount having hydraulic damping action has a peripheral bead and opposite surfaces extending inwardly therefrom. A nonrectilinear cut through the opposite surfaces of the membrane from at least proximate the bead of the membrane delimits at least one tongue from the membrane which projects either centrally of the membrane or toward a thinner portion of the membrane. The mount for the membrane has working and equalizing spaces filled with an hydraulic fluid and arranged to vary in volume in response to relative movement between pedestal and mounting bracket portions of the mount. A throttle opening between the working and equalizing spaces throttles fluid flow therebetween in response to the pressure differential therebetween from the volume variation for hydraulic damping. Annular projections on the mounting bracket hold the membrane in the mount by its peripheral bead so that the membrane separates the working and equalizing spaces and bulges in response to the pressure differentials therebetween.