Vibration and/or shock attenuating fluid mount or the like

US4738434A · kind A · utility

Inventors

• Robert H. Marjoram · Holly Springs, US
• Richard P. Thorn · Erie, US

Key dates

• Filing date: Apr 7, 1986
• Grant date: Apr 19, 1988
• Expiry date: Apr 7, 2006

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F13/18
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The mount preferably includes a decoupler assembly that causes different degrees of damping of relatively large magnitude excitation forces that result in mount compression versus mount extension, and that causes no or only minimal damping of excitation forces of relatively small amplitude. In a preferred embodiment the mount includes a generally cylindrical double-walled housing having a central portion containing at least part of a first variable volume chamber containing hydraulic fluid, and having an outer portion containing a second variable volume chamber containing gaseous fluid. The second chamber is of annular shape and encircles at least part of the first chamber. A rolling diaphragm defining a boundary of at least one of the chambers is formed of elastomeric material having a layer of reinforcing material preferably disposed at an offset location therein.